1713 lines
52 KiB
C++
1713 lines
52 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*/
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/** \file
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* \ingroup bke
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*/
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#include <climits>
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#include <cstddef>
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#include <cstdlib>
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#include "MEM_guardedalloc.h"
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#include "BLI_listbase.h"
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#include "BLI_string_utf8.h"
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#include "BLI_array.hh"
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#include "BLI_float3.hh"
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#include "BLI_float4x4.hh"
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#include "BLI_math.h"
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#include "BLI_rand.h"
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#include "BLI_span.hh"
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#include "BLI_vector.hh"
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#include "DNA_anim_types.h"
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#include "DNA_collection_types.h"
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#include "DNA_mesh_types.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_pointcloud_types.h"
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#include "DNA_scene_types.h"
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#include "DNA_vfont_types.h"
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#include "BKE_collection.h"
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#include "BKE_duplilist.h"
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#include "BKE_editmesh.h"
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#include "BKE_editmesh_cache.h"
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#include "BKE_geometry_set.h"
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#include "BKE_geometry_set.hh"
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#include "BKE_global.h"
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#include "BKE_idprop.h"
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#include "BKE_lattice.h"
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#include "BKE_main.h"
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#include "BKE_mesh.h"
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#include "BKE_mesh_iterators.h"
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#include "BKE_mesh_runtime.h"
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#include "BKE_object.h"
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#include "BKE_particle.h"
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#include "BKE_scene.h"
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#include "BKE_vfont.h"
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#include "DEG_depsgraph.h"
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#include "DEG_depsgraph_query.h"
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#include "BLI_hash.h"
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#include "BLI_strict_flags.h"
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using blender::Array;
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using blender::float3;
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using blender::float4x4;
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using blender::Span;
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using blender::Vector;
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/* -------------------------------------------------------------------- */
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/** \name Internal Duplicate Context
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* \{ */
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struct DupliContext {
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Depsgraph *depsgraph;
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/** XXX child objects are selected from this group if set, could be nicer. */
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Collection *collection;
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/** Only to check if the object is in edit-mode. */
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Object *obedit;
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Scene *scene;
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Object *object;
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float space_mat[4][4];
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/**
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* A stack that contains all the "parent" objects of a particular instance when recursive
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* instancing is used. This is used to prevent objects from instancing themselves accidentally.
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* Use a vector instead of a stack because we want to use the #contains method.
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*/
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Vector<Object *> *instance_stack;
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int persistent_id[MAX_DUPLI_RECUR];
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int level;
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const struct DupliGenerator *gen;
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/** Result containers. */
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ListBase *duplilist; /* Legacy doubly-linked list. */
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};
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struct DupliGenerator {
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short type; /* Dupli Type, see members of #OB_DUPLI. */
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void (*make_duplis)(const DupliContext *ctx);
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};
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static const DupliGenerator *get_dupli_generator(const DupliContext *ctx);
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/**
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* Create initial context for root object.
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*/
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static void init_context(DupliContext *r_ctx,
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Depsgraph *depsgraph,
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Scene *scene,
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Object *ob,
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const float space_mat[4][4],
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Vector<Object *> &instance_stack)
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{
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r_ctx->depsgraph = depsgraph;
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r_ctx->scene = scene;
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r_ctx->collection = nullptr;
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r_ctx->object = ob;
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r_ctx->obedit = OBEDIT_FROM_OBACT(ob);
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r_ctx->instance_stack = &instance_stack;
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if (space_mat) {
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copy_m4_m4(r_ctx->space_mat, space_mat);
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}
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else {
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unit_m4(r_ctx->space_mat);
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}
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r_ctx->level = 0;
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r_ctx->gen = get_dupli_generator(r_ctx);
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r_ctx->duplilist = nullptr;
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}
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/**
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* Create sub-context for recursive duplis.
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*/
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static bool copy_dupli_context(
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DupliContext *r_ctx, const DupliContext *ctx, Object *ob, const float mat[4][4], int index)
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{
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*r_ctx = *ctx;
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/* XXX annoying, previously was done by passing an ID* argument,
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* this at least is more explicit. */
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if (ctx->gen->type == OB_DUPLICOLLECTION) {
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r_ctx->collection = ctx->object->instance_collection;
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}
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r_ctx->object = ob;
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r_ctx->instance_stack = ctx->instance_stack;
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if (mat) {
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mul_m4_m4m4(r_ctx->space_mat, (float(*)[4])ctx->space_mat, mat);
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}
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r_ctx->persistent_id[r_ctx->level] = index;
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++r_ctx->level;
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if (r_ctx->level == MAX_DUPLI_RECUR - 1) {
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std::cerr << "Warning: Maximum instance recursion level reached.\n";
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return false;
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}
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r_ctx->gen = get_dupli_generator(r_ctx);
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return true;
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}
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/**
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* Generate a dupli instance.
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*
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* \param mat: is transform of the object relative to current context (including #Object.obmat).
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*/
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static DupliObject *make_dupli(const DupliContext *ctx,
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Object *ob,
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const float mat[4][4],
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int index)
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{
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DupliObject *dob;
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int i;
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/* Add a #DupliObject instance to the result container. */
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if (ctx->duplilist) {
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dob = MEM_cnew<DupliObject>("dupli object");
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BLI_addtail(ctx->duplilist, dob);
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}
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else {
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return nullptr;
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}
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dob->ob = ob;
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dob->ob_data = (ID *)ob->data;
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mul_m4_m4m4(dob->mat, (float(*)[4])ctx->space_mat, mat);
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dob->type = ctx->gen->type;
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/* Set persistent id, which is an array with a persistent index for each level
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* (particle number, vertex number, ..). by comparing this we can find the same
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* dupli-object between frames, which is needed for motion blur.
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* The last level is ordered first in the array. */
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dob->persistent_id[0] = index;
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for (i = 1; i < ctx->level + 1; i++) {
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dob->persistent_id[i] = ctx->persistent_id[ctx->level - i];
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}
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/* Fill rest of values with #INT_MAX which index will never have as value. */
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for (; i < MAX_DUPLI_RECUR; i++) {
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dob->persistent_id[i] = INT_MAX;
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}
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/* Meta-balls never draw in duplis, they are instead merged into one by the basis
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* meta-ball outside of the group. this does mean that if that meta-ball is not in the
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* scene, they will not show up at all, limitation that should be solved once. */
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if (ob->type == OB_MBALL) {
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dob->no_draw = true;
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}
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/* Random number.
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* The logic here is designed to match Cycles. */
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dob->random_id = BLI_hash_string(dob->ob->id.name + 2);
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if (dob->persistent_id[0] != INT_MAX) {
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for (i = 0; i < MAX_DUPLI_RECUR; i++) {
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dob->random_id = BLI_hash_int_2d(dob->random_id, (unsigned int)dob->persistent_id[i]);
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}
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}
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else {
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dob->random_id = BLI_hash_int_2d(dob->random_id, 0);
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}
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if (ctx->object != ob) {
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dob->random_id ^= BLI_hash_int(BLI_hash_string(ctx->object->id.name + 2));
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}
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return dob;
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}
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/**
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* Recursive dupli-objects.
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*
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* \param space_mat: is the local dupli-space (excluding dupli #Object.obmat).
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*/
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static void make_recursive_duplis(const DupliContext *ctx,
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Object *ob,
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const float space_mat[4][4],
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int index)
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{
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if (ctx->instance_stack->contains(ob)) {
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/* Avoid recursive instances. */
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printf("Warning: '%s' object is trying to instance itself.\n", ob->id.name + 2);
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return;
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}
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/* Simple preventing of too deep nested collections with #MAX_DUPLI_RECUR. */
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if (ctx->level < MAX_DUPLI_RECUR) {
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DupliContext rctx;
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if (!copy_dupli_context(&rctx, ctx, ob, space_mat, index)) {
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return;
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}
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if (rctx.gen) {
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ctx->instance_stack->append(ob);
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rctx.gen->make_duplis(&rctx);
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ctx->instance_stack->remove_last();
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}
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}
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}
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Internal Child Duplicates (Used by Other Functions)
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* \{ */
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using MakeChildDuplisFunc = void (*)(const DupliContext *ctx, void *userdata, Object *child);
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static bool is_child(const Object *ob, const Object *parent)
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{
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const Object *ob_parent = ob->parent;
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while (ob_parent) {
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if (ob_parent == parent) {
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return true;
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}
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ob_parent = ob_parent->parent;
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}
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return false;
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}
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/**
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* Create duplis from every child in scene or collection.
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*/
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static void make_child_duplis(const DupliContext *ctx,
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void *userdata,
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MakeChildDuplisFunc make_child_duplis_cb)
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{
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Object *parent = ctx->object;
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if (ctx->collection) {
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eEvaluationMode mode = DEG_get_mode(ctx->depsgraph);
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FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_BEGIN (ctx->collection, ob, mode) {
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if ((ob != ctx->obedit) && is_child(ob, parent)) {
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DupliContext pctx;
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if (copy_dupli_context(&pctx, ctx, ctx->object, nullptr, _base_id)) {
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/* Meta-balls have a different dupli handling. */
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if (ob->type != OB_MBALL) {
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ob->flag |= OB_DONE; /* Doesn't render. */
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}
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make_child_duplis_cb(&pctx, userdata, ob);
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}
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}
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}
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FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_END;
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}
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else {
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/* FIXME: using a mere counter to generate a 'persistent' dupli id is very weak. One possible
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* better solution could be to use `session_uuid` of ID's instead? */
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int persistent_dupli_id = 0;
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/* NOTE: this set of flags ensure we only iterate over objects that have a base in either the
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* current scene, or the set (background) scene. */
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int deg_objects_visibility_flags = DEG_ITER_OBJECT_FLAG_LINKED_DIRECTLY |
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DEG_ITER_OBJECT_FLAG_LINKED_VIA_SET;
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DEG_OBJECT_ITER_BEGIN (ctx->depsgraph, ob, deg_objects_visibility_flags) {
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if ((ob != ctx->obedit) && is_child(ob, parent)) {
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DupliContext pctx;
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if (copy_dupli_context(&pctx, ctx, ctx->object, nullptr, persistent_dupli_id)) {
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/* Meta-balls have a different dupli-handling. */
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if (ob->type != OB_MBALL) {
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ob->flag |= OB_DONE; /* Doesn't render. */
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}
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make_child_duplis_cb(&pctx, userdata, ob);
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}
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}
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persistent_dupli_id++;
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}
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DEG_OBJECT_ITER_END;
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}
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}
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Internal Data Access Utilities
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* \{ */
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static const Mesh *mesh_data_from_duplicator_object(Object *ob,
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BMEditMesh **r_em,
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const float (**r_vert_coords)[3],
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const float (**r_vert_normals)[3])
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{
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/* Gather mesh info. */
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BMEditMesh *em = BKE_editmesh_from_object(ob);
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const Mesh *me_eval;
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*r_em = nullptr;
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*r_vert_coords = nullptr;
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if (r_vert_normals != nullptr) {
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*r_vert_normals = nullptr;
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}
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/* We do not need any render-specific handling anymore, depsgraph takes care of that. */
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/* NOTE: Do direct access to the evaluated mesh: this function is used
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* during meta balls evaluation. But even without those all the objects
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* which are needed for correct instancing are already evaluated. */
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if (em != nullptr) {
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/* Note that this will only show deformation if #eModifierMode_OnCage is enabled.
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* We could change this but it matches 2.7x behavior. */
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me_eval = em->mesh_eval_cage;
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if ((me_eval == nullptr) || (me_eval->runtime.wrapper_type == ME_WRAPPER_TYPE_BMESH)) {
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EditMeshData *emd = me_eval ? me_eval->runtime.edit_data : nullptr;
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/* Only assign edit-mesh in the case we can't use `me_eval`. */
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*r_em = em;
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me_eval = nullptr;
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if ((emd != nullptr) && (emd->vertexCos != nullptr)) {
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*r_vert_coords = emd->vertexCos;
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if (r_vert_normals != nullptr) {
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BKE_editmesh_cache_ensure_vert_normals(em, emd);
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*r_vert_normals = emd->vertexNos;
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}
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}
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}
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}
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else {
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me_eval = BKE_object_get_evaluated_mesh(ob);
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}
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return me_eval;
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}
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Dupli-Collection Implementation (#OB_DUPLICOLLECTION)
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* \{ */
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static void make_duplis_collection(const DupliContext *ctx)
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{
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Object *ob = ctx->object;
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Collection *collection;
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float collection_mat[4][4];
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if (ob->instance_collection == nullptr) {
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return;
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}
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collection = ob->instance_collection;
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/* Combine collection offset and `obmat`. */
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unit_m4(collection_mat);
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sub_v3_v3(collection_mat[3], collection->instance_offset);
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mul_m4_m4m4(collection_mat, ob->obmat, collection_mat);
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/* Don't access 'ob->obmat' from now on. */
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eEvaluationMode mode = DEG_get_mode(ctx->depsgraph);
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FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_BEGIN (collection, cob, mode) {
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if (cob != ob) {
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float mat[4][4];
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/* Collection dupli-offset, should apply after everything else. */
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mul_m4_m4m4(mat, collection_mat, cob->obmat);
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make_dupli(ctx, cob, mat, _base_id);
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/* Recursion. */
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make_recursive_duplis(ctx, cob, collection_mat, _base_id);
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}
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}
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FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_END;
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}
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static const DupliGenerator gen_dupli_collection = {
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OB_DUPLICOLLECTION, /* type */
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make_duplis_collection /* make_duplis */
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};
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Dupli-Vertices Implementation (#OB_DUPLIVERTS for Geometry)
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* \{ */
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/** Values shared between different mesh types. */
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struct VertexDupliData_Params {
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/**
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* It's important we use this context instead of the `ctx` passed into #make_child_duplis
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* since these won't match in the case of recursion.
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*/
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const DupliContext *ctx;
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bool use_rotation;
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};
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struct VertexDupliData_Mesh {
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VertexDupliData_Params params;
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int totvert;
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const MVert *mvert;
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const float (*orco)[3];
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};
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struct VertexDupliData_EditMesh {
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VertexDupliData_Params params;
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BMEditMesh *em;
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/* Can be nullptr. */
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const float (*vert_coords)[3];
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const float (*vert_normals)[3];
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/**
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* \note The edit-mesh may assign #DupliObject.orco in cases when a regular mesh wouldn't.
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* For edit-meshes we only check for deformation, for regular meshes we check if #CD_ORCO exists.
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*
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* At the moment this isn't a meaningful difference since requesting #CD_ORCO causes the
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* edit-mesh to be converted into a mesh.
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*/
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bool has_orco;
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};
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|
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/**
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* \param no: The direction,
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* currently this is copied from a `short[3]` normal without division.
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* Can be null when \a use_rotation is false.
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*/
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static void get_duplivert_transform(const float co[3],
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const float no[3],
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const bool use_rotation,
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const short axis,
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const short upflag,
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float r_mat[4][4])
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{
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float quat[4];
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const float size[3] = {1.0f, 1.0f, 1.0f};
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|
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if (use_rotation) {
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/* Construct rotation matrix from normals. */
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float no_flip[3];
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negate_v3_v3(no_flip, no);
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vec_to_quat(quat, no_flip, axis, upflag);
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}
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else {
|
|
unit_qt(quat);
|
|
}
|
|
|
|
loc_quat_size_to_mat4(r_mat, co, quat, size);
|
|
}
|
|
|
|
static DupliObject *vertex_dupli(const DupliContext *ctx,
|
|
Object *inst_ob,
|
|
const float child_imat[4][4],
|
|
int index,
|
|
const float co[3],
|
|
const float no[3],
|
|
const bool use_rotation)
|
|
{
|
|
/* `obmat` is transform to vertex. */
|
|
float obmat[4][4];
|
|
get_duplivert_transform(co, no, use_rotation, inst_ob->trackflag, inst_ob->upflag, obmat);
|
|
|
|
float space_mat[4][4];
|
|
|
|
/* Make offset relative to inst_ob using relative child transform. */
|
|
mul_mat3_m4_v3(child_imat, obmat[3]);
|
|
/* Apply `obmat` _after_ the local vertex transform. */
|
|
mul_m4_m4m4(obmat, inst_ob->obmat, obmat);
|
|
|
|
/* Space matrix is constructed by removing `obmat` transform,
|
|
* this yields the world-space transform for recursive duplis. */
|
|
mul_m4_m4m4(space_mat, obmat, inst_ob->imat);
|
|
|
|
DupliObject *dob = make_dupli(ctx, inst_ob, obmat, index);
|
|
|
|
/* Recursion. */
|
|
make_recursive_duplis(ctx, inst_ob, space_mat, index);
|
|
|
|
return dob;
|
|
}
|
|
|
|
static void make_child_duplis_verts_from_mesh(const DupliContext *ctx,
|
|
void *userdata,
|
|
Object *inst_ob)
|
|
{
|
|
VertexDupliData_Mesh *vdd = (VertexDupliData_Mesh *)userdata;
|
|
const bool use_rotation = vdd->params.use_rotation;
|
|
|
|
const MVert *mvert = vdd->mvert;
|
|
const int totvert = vdd->totvert;
|
|
|
|
invert_m4_m4(inst_ob->imat, inst_ob->obmat);
|
|
/* Relative transform from parent to child space. */
|
|
float child_imat[4][4];
|
|
mul_m4_m4m4(child_imat, inst_ob->imat, ctx->object->obmat);
|
|
|
|
const MVert *mv = mvert;
|
|
for (int i = 0; i < totvert; i++, mv++) {
|
|
const float *co = mv->co;
|
|
float no[3];
|
|
normal_short_to_float_v3(no, mv->no);
|
|
DupliObject *dob = vertex_dupli(vdd->params.ctx, inst_ob, child_imat, i, co, no, use_rotation);
|
|
if (vdd->orco) {
|
|
copy_v3_v3(dob->orco, vdd->orco[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void make_child_duplis_verts_from_editmesh(const DupliContext *ctx,
|
|
void *userdata,
|
|
Object *inst_ob)
|
|
{
|
|
VertexDupliData_EditMesh *vdd = (VertexDupliData_EditMesh *)userdata;
|
|
BMEditMesh *em = vdd->em;
|
|
const bool use_rotation = vdd->params.use_rotation;
|
|
|
|
invert_m4_m4(inst_ob->imat, inst_ob->obmat);
|
|
/* Relative transform from parent to child space. */
|
|
float child_imat[4][4];
|
|
mul_m4_m4m4(child_imat, inst_ob->imat, ctx->object->obmat);
|
|
|
|
BMVert *v;
|
|
BMIter iter;
|
|
int i;
|
|
|
|
const float(*vert_coords)[3] = vdd->vert_coords;
|
|
const float(*vert_normals)[3] = vdd->vert_normals;
|
|
|
|
BM_ITER_MESH_INDEX (v, &iter, em->bm, BM_VERTS_OF_MESH, i) {
|
|
const float *co, *no;
|
|
if (vert_coords != nullptr) {
|
|
co = vert_coords[i];
|
|
no = vert_normals ? vert_normals[i] : nullptr;
|
|
}
|
|
else {
|
|
co = v->co;
|
|
no = v->no;
|
|
}
|
|
|
|
DupliObject *dob = vertex_dupli(vdd->params.ctx, inst_ob, child_imat, i, co, no, use_rotation);
|
|
if (vdd->has_orco) {
|
|
copy_v3_v3(dob->orco, v->co);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void make_duplis_verts(const DupliContext *ctx)
|
|
{
|
|
Object *parent = ctx->object;
|
|
const bool use_rotation = parent->transflag & OB_DUPLIROT;
|
|
|
|
/* Gather mesh info. */
|
|
BMEditMesh *em = nullptr;
|
|
const float(*vert_coords)[3] = nullptr;
|
|
const float(*vert_normals)[3] = nullptr;
|
|
const Mesh *me_eval = mesh_data_from_duplicator_object(
|
|
parent, &em, &vert_coords, use_rotation ? &vert_normals : nullptr);
|
|
if (em == nullptr && me_eval == nullptr) {
|
|
return;
|
|
}
|
|
|
|
VertexDupliData_Params vdd_params{ctx, use_rotation};
|
|
|
|
if (em != nullptr) {
|
|
VertexDupliData_EditMesh vdd{};
|
|
vdd.params = vdd_params;
|
|
vdd.em = em;
|
|
vdd.vert_coords = vert_coords;
|
|
vdd.vert_normals = vert_normals;
|
|
vdd.has_orco = (vert_coords != nullptr);
|
|
|
|
make_child_duplis(ctx, &vdd, make_child_duplis_verts_from_editmesh);
|
|
}
|
|
else {
|
|
VertexDupliData_Mesh vdd{};
|
|
vdd.params = vdd_params;
|
|
vdd.totvert = me_eval->totvert;
|
|
vdd.mvert = me_eval->mvert;
|
|
vdd.orco = (const float(*)[3])CustomData_get_layer(&me_eval->vdata, CD_ORCO);
|
|
|
|
make_child_duplis(ctx, &vdd, make_child_duplis_verts_from_mesh);
|
|
}
|
|
}
|
|
|
|
static const DupliGenerator gen_dupli_verts = {
|
|
OB_DUPLIVERTS, /* type */
|
|
make_duplis_verts /* make_duplis */
|
|
};
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Dupli-Vertices Implementation (#OB_DUPLIVERTS for 3D Text)
|
|
* \{ */
|
|
|
|
static Object *find_family_object(
|
|
Main *bmain, const char *family, size_t family_len, unsigned int ch, GHash *family_gh)
|
|
{
|
|
void *ch_key = POINTER_FROM_UINT(ch);
|
|
|
|
Object **ob_pt;
|
|
if ((ob_pt = (Object **)BLI_ghash_lookup_p(family_gh, ch_key))) {
|
|
return *ob_pt;
|
|
}
|
|
|
|
char ch_utf8[BLI_UTF8_MAX + 1];
|
|
size_t ch_utf8_len;
|
|
|
|
ch_utf8_len = BLI_str_utf8_from_unicode(ch, ch_utf8, sizeof(ch_utf8) - 1);
|
|
ch_utf8[ch_utf8_len] = '\0';
|
|
ch_utf8_len += 1; /* Compare with null terminator. */
|
|
|
|
LISTBASE_FOREACH (Object *, ob, &bmain->objects) {
|
|
if (STREQLEN(ob->id.name + 2 + family_len, ch_utf8, ch_utf8_len)) {
|
|
if (STREQLEN(ob->id.name + 2, family, family_len)) {
|
|
/* Inserted value can be nullptr, just to save searches in future. */
|
|
BLI_ghash_insert(family_gh, ch_key, ob);
|
|
return ob;
|
|
}
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
static void make_duplis_font(const DupliContext *ctx)
|
|
{
|
|
Object *par = ctx->object;
|
|
GHash *family_gh;
|
|
Object *ob;
|
|
Curve *cu;
|
|
struct CharTrans *ct, *chartransdata = nullptr;
|
|
float vec[3], obmat[4][4], pmat[4][4], fsize, xof, yof;
|
|
int text_len, a;
|
|
size_t family_len;
|
|
const char32_t *text = nullptr;
|
|
bool text_free = false;
|
|
|
|
/* Font dupli-verts not supported inside collections. */
|
|
if (ctx->collection) {
|
|
return;
|
|
}
|
|
|
|
copy_m4_m4(pmat, par->obmat);
|
|
|
|
/* In `par` the family name is stored, use this to find the other objects. */
|
|
|
|
BKE_vfont_to_curve_ex(
|
|
par, (Curve *)par->data, FO_DUPLI, nullptr, &text, &text_len, &text_free, &chartransdata);
|
|
|
|
if (text == nullptr || chartransdata == nullptr) {
|
|
return;
|
|
}
|
|
|
|
cu = (Curve *)par->data;
|
|
fsize = cu->fsize;
|
|
xof = cu->xof;
|
|
yof = cu->yof;
|
|
|
|
ct = chartransdata;
|
|
|
|
/* Cache result. */
|
|
family_len = strlen(cu->family);
|
|
family_gh = BLI_ghash_int_new_ex(__func__, 256);
|
|
|
|
/* Safety check even if it might fail badly when called for original object. */
|
|
const bool is_eval_curve = DEG_is_evaluated_id(&cu->id);
|
|
|
|
/* Advance matching BLI_str_utf8_as_utf32. */
|
|
for (a = 0; a < text_len; a++, ct++) {
|
|
|
|
/* XXX That G.main is *really* ugly, but not sure what to do here.
|
|
* Definitively don't think it would be safe to put back `Main *bmain` pointer
|
|
* in #DupliContext as done in 2.7x? */
|
|
ob = find_family_object(G.main, cu->family, family_len, (unsigned int)text[a], family_gh);
|
|
|
|
if (is_eval_curve) {
|
|
/* Workaround for the above hack. */
|
|
ob = DEG_get_evaluated_object(ctx->depsgraph, ob);
|
|
}
|
|
|
|
if (ob) {
|
|
vec[0] = fsize * (ct->xof - xof);
|
|
vec[1] = fsize * (ct->yof - yof);
|
|
vec[2] = 0.0;
|
|
|
|
mul_m4_v3(pmat, vec);
|
|
|
|
copy_m4_m4(obmat, par->obmat);
|
|
|
|
if (UNLIKELY(ct->rot != 0.0f)) {
|
|
float rmat[4][4];
|
|
|
|
zero_v3(obmat[3]);
|
|
axis_angle_to_mat4_single(rmat, 'Z', -ct->rot);
|
|
mul_m4_m4m4(obmat, obmat, rmat);
|
|
}
|
|
|
|
copy_v3_v3(obmat[3], vec);
|
|
|
|
make_dupli(ctx, ob, obmat, a);
|
|
}
|
|
}
|
|
|
|
if (text_free) {
|
|
MEM_freeN((void *)text);
|
|
}
|
|
|
|
BLI_ghash_free(family_gh, nullptr, nullptr);
|
|
|
|
MEM_freeN(chartransdata);
|
|
}
|
|
|
|
static const DupliGenerator gen_dupli_verts_font = {
|
|
OB_DUPLIVERTS, /* type */
|
|
make_duplis_font /* make_duplis */
|
|
};
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Dupli-Vertices Implementation (#OB_DUPLIVERTS for #PointCloud)
|
|
* \{ */
|
|
|
|
static void make_child_duplis_pointcloud(const DupliContext *ctx,
|
|
void *UNUSED(userdata),
|
|
Object *child)
|
|
{
|
|
const Object *parent = ctx->object;
|
|
const PointCloud *pointcloud = (PointCloud *)parent->data;
|
|
const float(*co)[3] = pointcloud->co;
|
|
const float *radius = pointcloud->radius;
|
|
const float(*rotation)[4] = nullptr; /* TODO: add optional rotation attribute. */
|
|
const float(*orco)[3] = nullptr; /* TODO: add optional texture coordinate attribute. */
|
|
|
|
/* Relative transform from parent to child space. */
|
|
float child_imat[4][4];
|
|
mul_m4_m4m4(child_imat, child->imat, parent->obmat);
|
|
|
|
for (int i = 0; i < pointcloud->totpoint; i++) {
|
|
/* Transform matrix from point position, radius and rotation. */
|
|
float quat[4] = {1.0f, 0.0f, 0.0f, 0.0f};
|
|
float size[3] = {1.0f, 1.0f, 1.0f};
|
|
if (radius) {
|
|
copy_v3_fl(size, radius[i]);
|
|
}
|
|
if (rotation) {
|
|
copy_v4_v4(quat, rotation[i]);
|
|
}
|
|
|
|
float space_mat[4][4];
|
|
loc_quat_size_to_mat4(space_mat, co[i], quat, size);
|
|
|
|
/* Make offset relative to child object using relative child transform,
|
|
* and apply object matrix after local vertex transform. */
|
|
mul_mat3_m4_v3(child_imat, space_mat[3]);
|
|
|
|
/* Create dupli object. */
|
|
float obmat[4][4];
|
|
mul_m4_m4m4(obmat, child->obmat, space_mat);
|
|
DupliObject *dob = make_dupli(ctx, child, obmat, i);
|
|
if (orco) {
|
|
copy_v3_v3(dob->orco, orco[i]);
|
|
}
|
|
|
|
/* Recursion. */
|
|
make_recursive_duplis(ctx, child, space_mat, i);
|
|
}
|
|
}
|
|
|
|
static void make_duplis_pointcloud(const DupliContext *ctx)
|
|
{
|
|
make_child_duplis(ctx, nullptr, make_child_duplis_pointcloud);
|
|
}
|
|
|
|
static const DupliGenerator gen_dupli_verts_pointcloud = {
|
|
OB_DUPLIVERTS, /* type */
|
|
make_duplis_pointcloud /* make_duplis */
|
|
};
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Instances Geometry Component Implementation
|
|
* \{ */
|
|
|
|
static void make_duplis_geometry_set_impl(const DupliContext *ctx,
|
|
const GeometrySet &geometry_set,
|
|
const float parent_transform[4][4],
|
|
bool geometry_set_is_instance)
|
|
{
|
|
int component_index = 0;
|
|
if (ctx->object->type != OB_MESH || geometry_set_is_instance) {
|
|
const Mesh *mesh = geometry_set.get_mesh_for_read();
|
|
if (mesh != nullptr) {
|
|
DupliObject *dupli = make_dupli(ctx, ctx->object, parent_transform, component_index++);
|
|
dupli->ob_data = (ID *)mesh;
|
|
}
|
|
}
|
|
if (ctx->object->type != OB_VOLUME || geometry_set_is_instance) {
|
|
const Volume *volume = geometry_set.get_volume_for_read();
|
|
if (volume != nullptr) {
|
|
DupliObject *dupli = make_dupli(ctx, ctx->object, parent_transform, component_index++);
|
|
dupli->ob_data = (ID *)volume;
|
|
}
|
|
}
|
|
if (!ELEM(ctx->object->type, OB_CURVE, OB_FONT) || geometry_set_is_instance) {
|
|
const CurveComponent *curve_component = geometry_set.get_component_for_read<CurveComponent>();
|
|
if (curve_component != nullptr) {
|
|
const Curve *curve = curve_component->get_curve_for_render();
|
|
if (curve != nullptr) {
|
|
DupliObject *dupli = make_dupli(ctx, ctx->object, parent_transform, component_index++);
|
|
dupli->ob_data = (ID *)curve;
|
|
}
|
|
}
|
|
}
|
|
if (ctx->object->type != OB_POINTCLOUD || geometry_set_is_instance) {
|
|
const PointCloud *pointcloud = geometry_set.get_pointcloud_for_read();
|
|
if (pointcloud != nullptr) {
|
|
DupliObject *dupli = make_dupli(ctx, ctx->object, parent_transform, component_index++);
|
|
dupli->ob_data = (ID *)pointcloud;
|
|
}
|
|
}
|
|
const bool creates_duplis_for_components = component_index >= 1;
|
|
|
|
const InstancesComponent *component = geometry_set.get_component_for_read<InstancesComponent>();
|
|
if (component == nullptr) {
|
|
return;
|
|
}
|
|
|
|
const DupliContext *instances_ctx = ctx;
|
|
/* Create a sub-context if some duplis were created above. This is to avoid dupli id collisions
|
|
* between the instances component below and the other components above. */
|
|
DupliContext new_instances_ctx;
|
|
if (creates_duplis_for_components) {
|
|
if (!copy_dupli_context(&new_instances_ctx, ctx, ctx->object, nullptr, component_index)) {
|
|
return;
|
|
}
|
|
instances_ctx = &new_instances_ctx;
|
|
}
|
|
|
|
Span<float4x4> instance_offset_matrices = component->instance_transforms();
|
|
Span<int> instance_reference_handles = component->instance_reference_handles();
|
|
Span<int> almost_unique_ids = component->almost_unique_ids();
|
|
Span<InstanceReference> references = component->references();
|
|
|
|
for (int64_t i : instance_offset_matrices.index_range()) {
|
|
const InstanceReference &reference = references[instance_reference_handles[i]];
|
|
const int id = almost_unique_ids[i];
|
|
|
|
switch (reference.type()) {
|
|
case InstanceReference::Type::Object: {
|
|
Object &object = reference.object();
|
|
float matrix[4][4];
|
|
mul_m4_m4m4(matrix, parent_transform, instance_offset_matrices[i].values);
|
|
make_dupli(instances_ctx, &object, matrix, id);
|
|
|
|
float space_matrix[4][4];
|
|
mul_m4_m4m4(space_matrix, instance_offset_matrices[i].values, object.imat);
|
|
mul_m4_m4_pre(space_matrix, parent_transform);
|
|
make_recursive_duplis(instances_ctx, &object, space_matrix, id);
|
|
break;
|
|
}
|
|
case InstanceReference::Type::Collection: {
|
|
Collection &collection = reference.collection();
|
|
float collection_matrix[4][4];
|
|
unit_m4(collection_matrix);
|
|
sub_v3_v3(collection_matrix[3], collection.instance_offset);
|
|
mul_m4_m4_pre(collection_matrix, instance_offset_matrices[i].values);
|
|
mul_m4_m4_pre(collection_matrix, parent_transform);
|
|
|
|
DupliContext sub_ctx;
|
|
if (!copy_dupli_context(&sub_ctx, instances_ctx, instances_ctx->object, nullptr, id)) {
|
|
break;
|
|
}
|
|
|
|
eEvaluationMode mode = DEG_get_mode(instances_ctx->depsgraph);
|
|
int object_id = 0;
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_BEGIN (&collection, object, mode) {
|
|
if (object == instances_ctx->object) {
|
|
continue;
|
|
}
|
|
|
|
float instance_matrix[4][4];
|
|
mul_m4_m4m4(instance_matrix, collection_matrix, object->obmat);
|
|
|
|
make_dupli(&sub_ctx, object, instance_matrix, object_id++);
|
|
make_recursive_duplis(&sub_ctx, object, collection_matrix, object_id++);
|
|
}
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_END;
|
|
break;
|
|
}
|
|
case InstanceReference::Type::GeometrySet: {
|
|
float new_transform[4][4];
|
|
mul_m4_m4m4(new_transform, parent_transform, instance_offset_matrices[i].values);
|
|
|
|
DupliContext sub_ctx;
|
|
if (copy_dupli_context(&sub_ctx, instances_ctx, instances_ctx->object, nullptr, id)) {
|
|
make_duplis_geometry_set_impl(&sub_ctx, reference.geometry_set(), new_transform, true);
|
|
}
|
|
break;
|
|
}
|
|
case InstanceReference::Type::None: {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void make_duplis_geometry_set(const DupliContext *ctx)
|
|
{
|
|
const GeometrySet *geometry_set = ctx->object->runtime.geometry_set_eval;
|
|
make_duplis_geometry_set_impl(ctx, *geometry_set, ctx->object->obmat, false);
|
|
}
|
|
|
|
static const DupliGenerator gen_dupli_geometry_set = {
|
|
0,
|
|
make_duplis_geometry_set,
|
|
};
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Dupli-Faces Implementation (#OB_DUPLIFACES)
|
|
* \{ */
|
|
|
|
/** Values shared between different mesh types. */
|
|
struct FaceDupliData_Params {
|
|
/**
|
|
* It's important we use this context instead of the `ctx` passed into #make_child_duplis
|
|
* since these won't match in the case of recursion.
|
|
*/
|
|
const DupliContext *ctx;
|
|
|
|
bool use_scale;
|
|
};
|
|
|
|
struct FaceDupliData_Mesh {
|
|
FaceDupliData_Params params;
|
|
|
|
int totface;
|
|
const MPoly *mpoly;
|
|
const MLoop *mloop;
|
|
const MVert *mvert;
|
|
const float (*orco)[3];
|
|
const MLoopUV *mloopuv;
|
|
};
|
|
|
|
struct FaceDupliData_EditMesh {
|
|
FaceDupliData_Params params;
|
|
|
|
BMEditMesh *em;
|
|
|
|
bool has_orco, has_uvs;
|
|
int cd_loop_uv_offset;
|
|
/* Can be nullptr. */
|
|
const float (*vert_coords)[3];
|
|
};
|
|
|
|
static void get_dupliface_transform_from_coords(Span<float3> coords,
|
|
const bool use_scale,
|
|
const float scale_fac,
|
|
float r_mat[4][4])
|
|
{
|
|
/* Location. */
|
|
float3 location(0);
|
|
for (const float3 &coord : coords) {
|
|
location += coord;
|
|
}
|
|
location *= 1.0f / (float)coords.size();
|
|
|
|
/* Rotation. */
|
|
float quat[4];
|
|
|
|
float3 f_no;
|
|
cross_poly_v3(f_no, (const float(*)[3])coords.data(), (uint)coords.size());
|
|
f_no.normalize();
|
|
tri_to_quat_ex(quat, coords[0], coords[1], coords[2], f_no);
|
|
|
|
/* Scale. */
|
|
float scale;
|
|
if (use_scale) {
|
|
const float area = area_poly_v3((const float(*)[3])coords.data(), (uint)coords.size());
|
|
scale = sqrtf(area) * scale_fac;
|
|
}
|
|
else {
|
|
scale = 1.0f;
|
|
}
|
|
|
|
loc_quat_size_to_mat4(r_mat, location, quat, float3(scale));
|
|
}
|
|
|
|
static DupliObject *face_dupli(const DupliContext *ctx,
|
|
Object *inst_ob,
|
|
const float child_imat[4][4],
|
|
const int index,
|
|
const bool use_scale,
|
|
const float scale_fac,
|
|
Span<float3> coords)
|
|
{
|
|
float obmat[4][4];
|
|
float space_mat[4][4];
|
|
|
|
/* `obmat` is transform to face. */
|
|
get_dupliface_transform_from_coords(coords, use_scale, scale_fac, obmat);
|
|
|
|
/* Make offset relative to inst_ob using relative child transform. */
|
|
mul_mat3_m4_v3(child_imat, obmat[3]);
|
|
|
|
/* XXX ugly hack to ensure same behavior as in master.
|
|
* This should not be needed, #Object.parentinv is not consistent outside of parenting. */
|
|
{
|
|
float imat[3][3];
|
|
copy_m3_m4(imat, inst_ob->parentinv);
|
|
mul_m4_m3m4(obmat, imat, obmat);
|
|
}
|
|
|
|
/* Apply `obmat` _after_ the local face transform. */
|
|
mul_m4_m4m4(obmat, inst_ob->obmat, obmat);
|
|
|
|
/* Space matrix is constructed by removing `obmat` transform,
|
|
* this yields the world-space transform for recursive duplis. */
|
|
mul_m4_m4m4(space_mat, obmat, inst_ob->imat);
|
|
|
|
DupliObject *dob = make_dupli(ctx, inst_ob, obmat, index);
|
|
|
|
/* Recursion. */
|
|
make_recursive_duplis(ctx, inst_ob, space_mat, index);
|
|
|
|
return dob;
|
|
}
|
|
|
|
static DupliObject *face_dupli_from_mesh(const DupliContext *ctx,
|
|
Object *inst_ob,
|
|
const float child_imat[4][4],
|
|
const int index,
|
|
const bool use_scale,
|
|
const float scale_fac,
|
|
|
|
/* Mesh variables. */
|
|
const MPoly *mpoly,
|
|
const MLoop *mloopstart,
|
|
const MVert *mvert)
|
|
{
|
|
const int coords_len = mpoly->totloop;
|
|
Array<float3, 64> coords(coords_len);
|
|
|
|
const MLoop *ml = mloopstart;
|
|
for (int i = 0; i < coords_len; i++, ml++) {
|
|
coords[i] = float3(mvert[ml->v].co);
|
|
}
|
|
|
|
return face_dupli(ctx, inst_ob, child_imat, index, use_scale, scale_fac, coords);
|
|
}
|
|
|
|
static DupliObject *face_dupli_from_editmesh(const DupliContext *ctx,
|
|
Object *inst_ob,
|
|
const float child_imat[4][4],
|
|
const int index,
|
|
const bool use_scale,
|
|
const float scale_fac,
|
|
|
|
/* Mesh variables. */
|
|
BMFace *f,
|
|
const float (*vert_coords)[3])
|
|
{
|
|
const int coords_len = f->len;
|
|
Array<float3, 64> coords(coords_len);
|
|
|
|
BMLoop *l_first, *l_iter;
|
|
int i = 0;
|
|
l_iter = l_first = BM_FACE_FIRST_LOOP(f);
|
|
if (vert_coords != nullptr) {
|
|
do {
|
|
copy_v3_v3(coords[i++], vert_coords[BM_elem_index_get(l_iter->v)]);
|
|
} while ((l_iter = l_iter->next) != l_first);
|
|
}
|
|
else {
|
|
do {
|
|
copy_v3_v3(coords[i++], l_iter->v->co);
|
|
} while ((l_iter = l_iter->next) != l_first);
|
|
}
|
|
|
|
return face_dupli(ctx, inst_ob, child_imat, index, use_scale, scale_fac, coords);
|
|
}
|
|
|
|
static void make_child_duplis_faces_from_mesh(const DupliContext *ctx,
|
|
void *userdata,
|
|
Object *inst_ob)
|
|
{
|
|
FaceDupliData_Mesh *fdd = (FaceDupliData_Mesh *)userdata;
|
|
const MPoly *mpoly = fdd->mpoly, *mp;
|
|
const MLoop *mloop = fdd->mloop;
|
|
const MVert *mvert = fdd->mvert;
|
|
const float(*orco)[3] = fdd->orco;
|
|
const MLoopUV *mloopuv = fdd->mloopuv;
|
|
const int totface = fdd->totface;
|
|
const bool use_scale = fdd->params.use_scale;
|
|
int a;
|
|
|
|
float child_imat[4][4];
|
|
|
|
invert_m4_m4(inst_ob->imat, inst_ob->obmat);
|
|
/* Relative transform from parent to child space. */
|
|
mul_m4_m4m4(child_imat, inst_ob->imat, ctx->object->obmat);
|
|
const float scale_fac = ctx->object->instance_faces_scale;
|
|
|
|
for (a = 0, mp = mpoly; a < totface; a++, mp++) {
|
|
const MLoop *loopstart = mloop + mp->loopstart;
|
|
DupliObject *dob = face_dupli_from_mesh(
|
|
fdd->params.ctx, inst_ob, child_imat, a, use_scale, scale_fac, mp, loopstart, mvert);
|
|
|
|
const float w = 1.0f / (float)mp->totloop;
|
|
if (orco) {
|
|
for (int j = 0; j < mp->totloop; j++) {
|
|
madd_v3_v3fl(dob->orco, orco[loopstart[j].v], w);
|
|
}
|
|
}
|
|
if (mloopuv) {
|
|
for (int j = 0; j < mp->totloop; j++) {
|
|
madd_v2_v2fl(dob->uv, mloopuv[mp->loopstart + j].uv, w);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void make_child_duplis_faces_from_editmesh(const DupliContext *ctx,
|
|
void *userdata,
|
|
Object *inst_ob)
|
|
{
|
|
FaceDupliData_EditMesh *fdd = (FaceDupliData_EditMesh *)userdata;
|
|
BMEditMesh *em = fdd->em;
|
|
float child_imat[4][4];
|
|
int a;
|
|
BMFace *f;
|
|
BMIter iter;
|
|
const bool use_scale = fdd->params.use_scale;
|
|
|
|
const float(*vert_coords)[3] = fdd->vert_coords;
|
|
|
|
BLI_assert((vert_coords == nullptr) || (em->bm->elem_index_dirty & BM_VERT) == 0);
|
|
|
|
invert_m4_m4(inst_ob->imat, inst_ob->obmat);
|
|
/* Relative transform from parent to child space. */
|
|
mul_m4_m4m4(child_imat, inst_ob->imat, ctx->object->obmat);
|
|
const float scale_fac = ctx->object->instance_faces_scale;
|
|
|
|
BM_ITER_MESH_INDEX (f, &iter, em->bm, BM_FACES_OF_MESH, a) {
|
|
DupliObject *dob = face_dupli_from_editmesh(
|
|
fdd->params.ctx, inst_ob, child_imat, a, use_scale, scale_fac, f, vert_coords);
|
|
|
|
if (fdd->has_orco) {
|
|
const float w = 1.0f / (float)f->len;
|
|
BMLoop *l_first, *l_iter;
|
|
l_iter = l_first = BM_FACE_FIRST_LOOP(f);
|
|
do {
|
|
madd_v3_v3fl(dob->orco, l_iter->v->co, w);
|
|
} while ((l_iter = l_iter->next) != l_first);
|
|
}
|
|
if (fdd->has_uvs) {
|
|
BM_face_uv_calc_center_median(f, fdd->cd_loop_uv_offset, dob->uv);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void make_duplis_faces(const DupliContext *ctx)
|
|
{
|
|
Object *parent = ctx->object;
|
|
|
|
/* Gather mesh info. */
|
|
BMEditMesh *em = nullptr;
|
|
const float(*vert_coords)[3] = nullptr;
|
|
const Mesh *me_eval = mesh_data_from_duplicator_object(parent, &em, &vert_coords, nullptr);
|
|
if (em == nullptr && me_eval == nullptr) {
|
|
return;
|
|
}
|
|
|
|
FaceDupliData_Params fdd_params = {ctx, (parent->transflag & OB_DUPLIFACES_SCALE) != 0};
|
|
|
|
if (em != nullptr) {
|
|
const int uv_idx = CustomData_get_render_layer(&em->bm->ldata, CD_MLOOPUV);
|
|
FaceDupliData_EditMesh fdd{};
|
|
fdd.params = fdd_params;
|
|
fdd.em = em;
|
|
fdd.vert_coords = vert_coords;
|
|
fdd.has_orco = (vert_coords != nullptr);
|
|
fdd.has_uvs = (uv_idx != -1);
|
|
fdd.cd_loop_uv_offset = (uv_idx != -1) ?
|
|
CustomData_get_n_offset(&em->bm->ldata, CD_MLOOPUV, uv_idx) :
|
|
-1;
|
|
make_child_duplis(ctx, &fdd, make_child_duplis_faces_from_editmesh);
|
|
}
|
|
else {
|
|
const int uv_idx = CustomData_get_render_layer(&me_eval->ldata, CD_MLOOPUV);
|
|
FaceDupliData_Mesh fdd{};
|
|
fdd.params = fdd_params;
|
|
fdd.totface = me_eval->totpoly;
|
|
fdd.mpoly = me_eval->mpoly;
|
|
fdd.mloop = me_eval->mloop;
|
|
fdd.mvert = me_eval->mvert;
|
|
fdd.mloopuv = (uv_idx != -1) ? (const MLoopUV *)CustomData_get_layer_n(
|
|
&me_eval->ldata, CD_MLOOPUV, uv_idx) :
|
|
nullptr;
|
|
fdd.orco = (const float(*)[3])CustomData_get_layer(&me_eval->vdata, CD_ORCO);
|
|
|
|
make_child_duplis(ctx, &fdd, make_child_duplis_faces_from_mesh);
|
|
}
|
|
}
|
|
|
|
static const DupliGenerator gen_dupli_faces = {
|
|
OB_DUPLIFACES, /* type */
|
|
make_duplis_faces /* make_duplis */
|
|
};
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Dupli-Particles Implementation (#OB_DUPLIPARTS)
|
|
* \{ */
|
|
|
|
static void make_duplis_particle_system(const DupliContext *ctx, ParticleSystem *psys)
|
|
{
|
|
Scene *scene = ctx->scene;
|
|
Object *par = ctx->object;
|
|
eEvaluationMode mode = DEG_get_mode(ctx->depsgraph);
|
|
bool for_render = mode == DAG_EVAL_RENDER;
|
|
|
|
Object *ob = nullptr, **oblist = nullptr;
|
|
DupliObject *dob;
|
|
ParticleSettings *part;
|
|
ParticleData *pa;
|
|
ChildParticle *cpa = nullptr;
|
|
ParticleKey state;
|
|
ParticleCacheKey *cache;
|
|
float ctime, scale = 1.0f;
|
|
float tmat[4][4], mat[4][4], pamat[4][4], size = 0.0;
|
|
int a, b, hair = 0;
|
|
int totpart, totchild;
|
|
|
|
int no_draw_flag = PARS_UNEXIST;
|
|
|
|
if (psys == nullptr) {
|
|
return;
|
|
}
|
|
|
|
part = psys->part;
|
|
|
|
if (part == nullptr) {
|
|
return;
|
|
}
|
|
|
|
if (!psys_check_enabled(par, psys, for_render)) {
|
|
return;
|
|
}
|
|
|
|
if (!for_render) {
|
|
no_draw_flag |= PARS_NO_DISP;
|
|
}
|
|
|
|
/* NOTE: in old animation system, used parent object's time-offset. */
|
|
ctime = DEG_get_ctime(ctx->depsgraph);
|
|
|
|
totpart = psys->totpart;
|
|
totchild = psys->totchild;
|
|
|
|
if ((for_render || part->draw_as == PART_DRAW_REND) &&
|
|
ELEM(part->ren_as, PART_DRAW_OB, PART_DRAW_GR)) {
|
|
ParticleSimulationData sim = {nullptr};
|
|
sim.depsgraph = ctx->depsgraph;
|
|
sim.scene = scene;
|
|
sim.ob = par;
|
|
sim.psys = psys;
|
|
sim.psmd = psys_get_modifier(par, psys);
|
|
/* Make sure emitter `imat` is in global coordinates instead of render view coordinates. */
|
|
invert_m4_m4(par->imat, par->obmat);
|
|
|
|
/* First check for loops (particle system object used as dupli-object). */
|
|
if (part->ren_as == PART_DRAW_OB) {
|
|
if (ELEM(part->instance_object, nullptr, par)) {
|
|
return;
|
|
}
|
|
}
|
|
else { /* #PART_DRAW_GR. */
|
|
if (part->instance_collection == nullptr) {
|
|
return;
|
|
}
|
|
|
|
const ListBase dup_collection_objects = BKE_collection_object_cache_get(
|
|
part->instance_collection);
|
|
if (BLI_listbase_is_empty(&dup_collection_objects)) {
|
|
return;
|
|
}
|
|
|
|
if (BLI_findptr(&dup_collection_objects, par, offsetof(Base, object))) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* If we have a hair particle system, use the path cache. */
|
|
if (part->type == PART_HAIR) {
|
|
if (psys->flag & PSYS_HAIR_DONE) {
|
|
hair = (totchild == 0 || psys->childcache) && psys->pathcache;
|
|
}
|
|
if (!hair) {
|
|
return;
|
|
}
|
|
|
|
/* We use cache, update `totchild` according to cached data. */
|
|
totchild = psys->totchildcache;
|
|
totpart = psys->totcached;
|
|
}
|
|
|
|
RNG *rng = BLI_rng_new_srandom(31415926u + (unsigned int)psys->seed);
|
|
|
|
psys->lattice_deform_data = psys_create_lattice_deform_data(&sim);
|
|
|
|
/* Gather list of objects or single object. */
|
|
int totcollection = 0;
|
|
|
|
const bool use_whole_collection = part->draw & PART_DRAW_WHOLE_GR;
|
|
const bool use_collection_count = part->draw & PART_DRAW_COUNT_GR && !use_whole_collection;
|
|
if (part->ren_as == PART_DRAW_GR) {
|
|
if (use_collection_count) {
|
|
psys_find_group_weights(part);
|
|
LISTBASE_FOREACH (ParticleDupliWeight *, dw, &part->instance_weights) {
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_BEGIN (
|
|
part->instance_collection, object, mode) {
|
|
if (dw->ob == object) {
|
|
totcollection += dw->count;
|
|
break;
|
|
}
|
|
}
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_END;
|
|
}
|
|
}
|
|
else {
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_BEGIN (
|
|
part->instance_collection, object, mode) {
|
|
(void)object;
|
|
totcollection++;
|
|
}
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_END;
|
|
}
|
|
|
|
oblist = (Object **)MEM_callocN((size_t)totcollection * sizeof(Object *),
|
|
"dupcollection object list");
|
|
|
|
if (use_collection_count) {
|
|
a = 0;
|
|
LISTBASE_FOREACH (ParticleDupliWeight *, dw, &part->instance_weights) {
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_BEGIN (
|
|
part->instance_collection, object, mode) {
|
|
if (dw->ob == object) {
|
|
for (b = 0; b < dw->count; b++, a++) {
|
|
oblist[a] = dw->ob;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_END;
|
|
}
|
|
}
|
|
else {
|
|
a = 0;
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_BEGIN (
|
|
part->instance_collection, object, mode) {
|
|
oblist[a] = object;
|
|
a++;
|
|
}
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_END;
|
|
}
|
|
}
|
|
else {
|
|
ob = part->instance_object;
|
|
}
|
|
|
|
if (totchild == 0 || part->draw & PART_DRAW_PARENT) {
|
|
a = 0;
|
|
}
|
|
else {
|
|
a = totpart;
|
|
}
|
|
|
|
for (pa = psys->particles; a < totpart + totchild; a++, pa++) {
|
|
if (a < totpart) {
|
|
/* Handle parent particle. */
|
|
if (pa->flag & no_draw_flag) {
|
|
continue;
|
|
}
|
|
|
|
#if 0 /* UNUSED */
|
|
pa_num = pa->num;
|
|
#endif
|
|
size = pa->size;
|
|
}
|
|
else {
|
|
/* Handle child particle. */
|
|
cpa = &psys->child[a - totpart];
|
|
|
|
#if 0 /* UNUSED */
|
|
pa_num = a;
|
|
#endif
|
|
size = psys_get_child_size(psys, cpa, ctime, nullptr);
|
|
}
|
|
|
|
/* Some hair paths might be non-existent so they can't be used for duplication. */
|
|
if (hair && psys->pathcache &&
|
|
((a < totpart && psys->pathcache[a]->segments < 0) ||
|
|
(a >= totpart && psys->childcache[a - totpart]->segments < 0))) {
|
|
continue;
|
|
}
|
|
|
|
if (part->ren_as == PART_DRAW_GR) {
|
|
/* Prevent divide by zero below T28336. */
|
|
if (totcollection == 0) {
|
|
continue;
|
|
}
|
|
|
|
/* For collections, pick the object based on settings. */
|
|
if (part->draw & PART_DRAW_RAND_GR && !use_whole_collection) {
|
|
b = BLI_rng_get_int(rng) % totcollection;
|
|
}
|
|
else {
|
|
b = a % totcollection;
|
|
}
|
|
|
|
ob = oblist[b];
|
|
}
|
|
|
|
if (hair) {
|
|
/* Hair we handle separate and compute transform based on hair keys. */
|
|
if (a < totpart) {
|
|
cache = psys->pathcache[a];
|
|
psys_get_dupli_path_transform(&sim, pa, nullptr, cache, pamat, &scale);
|
|
}
|
|
else {
|
|
cache = psys->childcache[a - totpart];
|
|
psys_get_dupli_path_transform(&sim, nullptr, cpa, cache, pamat, &scale);
|
|
}
|
|
|
|
copy_v3_v3(pamat[3], cache->co);
|
|
pamat[3][3] = 1.0f;
|
|
}
|
|
else {
|
|
/* First key. */
|
|
state.time = ctime;
|
|
if (psys_get_particle_state(&sim, a, &state, false) == 0) {
|
|
continue;
|
|
}
|
|
|
|
float tquat[4];
|
|
normalize_qt_qt(tquat, state.rot);
|
|
quat_to_mat4(pamat, tquat);
|
|
copy_v3_v3(pamat[3], state.co);
|
|
pamat[3][3] = 1.0f;
|
|
}
|
|
|
|
if (part->ren_as == PART_DRAW_GR && psys->part->draw & PART_DRAW_WHOLE_GR) {
|
|
b = 0;
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_BEGIN (
|
|
part->instance_collection, object, mode) {
|
|
copy_m4_m4(tmat, oblist[b]->obmat);
|
|
|
|
/* Apply collection instance offset. */
|
|
sub_v3_v3(tmat[3], part->instance_collection->instance_offset);
|
|
|
|
/* Apply particle scale. */
|
|
mul_mat3_m4_fl(tmat, size * scale);
|
|
mul_v3_fl(tmat[3], size * scale);
|
|
|
|
/* Individual particle transform. */
|
|
mul_m4_m4m4(mat, pamat, tmat);
|
|
|
|
dob = make_dupli(ctx, object, mat, a);
|
|
dob->particle_system = psys;
|
|
|
|
psys_get_dupli_texture(psys, part, sim.psmd, pa, cpa, dob->uv, dob->orco);
|
|
|
|
b++;
|
|
}
|
|
FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_END;
|
|
}
|
|
else {
|
|
float obmat[4][4];
|
|
copy_m4_m4(obmat, ob->obmat);
|
|
|
|
float vec[3];
|
|
copy_v3_v3(vec, obmat[3]);
|
|
zero_v3(obmat[3]);
|
|
|
|
/* Particle rotation uses x-axis as the aligned axis,
|
|
* so pre-rotate the object accordingly. */
|
|
if ((part->draw & PART_DRAW_ROTATE_OB) == 0) {
|
|
float xvec[3], q[4], size_mat[4][4], original_size[3];
|
|
|
|
mat4_to_size(original_size, obmat);
|
|
size_to_mat4(size_mat, original_size);
|
|
|
|
xvec[0] = -1.0f;
|
|
xvec[1] = xvec[2] = 0;
|
|
vec_to_quat(q, xvec, ob->trackflag, ob->upflag);
|
|
quat_to_mat4(obmat, q);
|
|
obmat[3][3] = 1.0f;
|
|
|
|
/* Add scaling if requested. */
|
|
if ((part->draw & PART_DRAW_NO_SCALE_OB) == 0) {
|
|
mul_m4_m4m4(obmat, obmat, size_mat);
|
|
}
|
|
}
|
|
else if (part->draw & PART_DRAW_NO_SCALE_OB) {
|
|
/* Remove scaling. */
|
|
float size_mat[4][4], original_size[3];
|
|
|
|
mat4_to_size(original_size, obmat);
|
|
size_to_mat4(size_mat, original_size);
|
|
invert_m4(size_mat);
|
|
|
|
mul_m4_m4m4(obmat, obmat, size_mat);
|
|
}
|
|
|
|
mul_m4_m4m4(tmat, pamat, obmat);
|
|
mul_mat3_m4_fl(tmat, size * scale);
|
|
|
|
copy_m4_m4(mat, tmat);
|
|
|
|
if (part->draw & PART_DRAW_GLOBAL_OB) {
|
|
add_v3_v3v3(mat[3], mat[3], vec);
|
|
}
|
|
|
|
dob = make_dupli(ctx, ob, mat, a);
|
|
dob->particle_system = psys;
|
|
psys_get_dupli_texture(psys, part, sim.psmd, pa, cpa, dob->uv, dob->orco);
|
|
}
|
|
}
|
|
|
|
BLI_rng_free(rng);
|
|
}
|
|
|
|
/* Clean up. */
|
|
if (oblist) {
|
|
MEM_freeN(oblist);
|
|
}
|
|
|
|
if (psys->lattice_deform_data) {
|
|
BKE_lattice_deform_data_destroy(psys->lattice_deform_data);
|
|
psys->lattice_deform_data = nullptr;
|
|
}
|
|
}
|
|
|
|
static void make_duplis_particles(const DupliContext *ctx)
|
|
{
|
|
/* Particle system take up one level in id, the particles another. */
|
|
int psysid;
|
|
LISTBASE_FOREACH_INDEX (ParticleSystem *, psys, &ctx->object->particlesystem, psysid) {
|
|
/* Particles create one more level for persistent `psys` index. */
|
|
DupliContext pctx;
|
|
if (copy_dupli_context(&pctx, ctx, ctx->object, nullptr, psysid)) {
|
|
make_duplis_particle_system(&pctx, psys);
|
|
}
|
|
}
|
|
}
|
|
|
|
static const DupliGenerator gen_dupli_particles = {
|
|
OB_DUPLIPARTS, /* type */
|
|
make_duplis_particles /* make_duplis */
|
|
};
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Dupli-Generator Selector For The Given Context
|
|
* \{ */
|
|
|
|
static const DupliGenerator *get_dupli_generator(const DupliContext *ctx)
|
|
{
|
|
int transflag = ctx->object->transflag;
|
|
int visibility_flag = ctx->object->visibility_flag;
|
|
|
|
if ((transflag & OB_DUPLI) == 0 && ctx->object->runtime.geometry_set_eval == nullptr) {
|
|
return nullptr;
|
|
}
|
|
|
|
/* Should the dupli's be generated for this object? - Respect restrict flags. */
|
|
if (DEG_get_mode(ctx->depsgraph) == DAG_EVAL_RENDER ? (visibility_flag & OB_HIDE_RENDER) :
|
|
(visibility_flag & OB_HIDE_VIEWPORT)) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (ctx->object->runtime.geometry_set_eval != nullptr) {
|
|
if (BKE_object_has_geometry_set_instances(ctx->object)) {
|
|
return &gen_dupli_geometry_set;
|
|
}
|
|
}
|
|
|
|
if (transflag & OB_DUPLIPARTS) {
|
|
return &gen_dupli_particles;
|
|
}
|
|
if (transflag & OB_DUPLIVERTS) {
|
|
if (ctx->object->type == OB_MESH) {
|
|
return &gen_dupli_verts;
|
|
}
|
|
if (ctx->object->type == OB_FONT) {
|
|
return &gen_dupli_verts_font;
|
|
}
|
|
if (ctx->object->type == OB_POINTCLOUD) {
|
|
return &gen_dupli_verts_pointcloud;
|
|
}
|
|
}
|
|
else if (transflag & OB_DUPLIFACES) {
|
|
if (ctx->object->type == OB_MESH) {
|
|
return &gen_dupli_faces;
|
|
}
|
|
}
|
|
else if (transflag & OB_DUPLICOLLECTION) {
|
|
return &gen_dupli_collection;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Dupli-Container Implementation
|
|
* \{ */
|
|
|
|
ListBase *object_duplilist(Depsgraph *depsgraph, Scene *sce, Object *ob)
|
|
{
|
|
ListBase *duplilist = MEM_cnew<ListBase>("duplilist");
|
|
DupliContext ctx;
|
|
Vector<Object *> instance_stack;
|
|
instance_stack.append(ob);
|
|
init_context(&ctx, depsgraph, sce, ob, nullptr, instance_stack);
|
|
if (ctx.gen) {
|
|
ctx.duplilist = duplilist;
|
|
ctx.gen->make_duplis(&ctx);
|
|
}
|
|
|
|
return duplilist;
|
|
}
|
|
|
|
void free_object_duplilist(ListBase *lb)
|
|
{
|
|
BLI_freelistN(lb);
|
|
MEM_freeN(lb);
|
|
}
|
|
|
|
/** \} */
|