334 lines
11 KiB
C++
334 lines
11 KiB
C++
/* SPDX-FileCopyrightText: 2017 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup modifiers
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*/
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#include <cstdio>
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#include "BLI_hash.h"
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#include "BLI_listbase.h"
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#include "BLI_math_matrix.h"
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#include "BLI_math_vector.h"
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#include "BLI_rand.h"
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#include "BLI_utildefines.h"
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#include "BLT_translation.hh"
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#include "BLI_hash.h"
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#include "BLI_rand.h"
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#include "DNA_defaults.h"
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#include "DNA_gpencil_legacy_types.h"
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#include "DNA_gpencil_modifier_types.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_object_types.h"
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#include "DNA_screen_types.h"
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#include "RNA_access.hh"
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#include "BKE_deform.hh"
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#include "BKE_gpencil_geom_legacy.h"
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#include "BKE_gpencil_modifier_legacy.h"
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#include "BKE_lib_query.hh"
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#include "BKE_modifier.hh"
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#include "DEG_depsgraph_build.hh"
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#include "UI_interface.hh"
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#include "UI_resources.hh"
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#include "MOD_gpencil_legacy_ui_common.h"
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#include "MOD_gpencil_legacy_util.h"
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static void init_data(GpencilModifierData *md)
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{
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OffsetGpencilModifierData *gpmd = (OffsetGpencilModifierData *)md;
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BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(gpmd, modifier));
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MEMCPY_STRUCT_AFTER(gpmd, DNA_struct_default_get(OffsetGpencilModifierData), modifier);
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/* Open the first subpanel too, because it's activated by default. */
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md->ui_expand_flag = UI_PANEL_DATA_EXPAND_ROOT | UI_SUBPANEL_DATA_EXPAND_1;
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}
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static void copy_data(const GpencilModifierData *md, GpencilModifierData *target)
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{
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BKE_gpencil_modifier_copydata_generic(md, target);
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}
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/* Change stroke offset. */
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static void deform_stroke(GpencilModifierData *md,
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Depsgraph * /*depsgraph*/,
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Object *ob,
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bGPDlayer *gpl,
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bGPDframe *gpf,
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bGPDstroke *gps)
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{
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OffsetGpencilModifierData *mmd = (OffsetGpencilModifierData *)md;
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const int def_nr = BKE_object_defgroup_name_index(ob, mmd->vgname);
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float mat[4][4];
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float loc[3], rot[3], scale[3];
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if (!is_stroke_affected_by_modifier(ob,
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mmd->layername,
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mmd->material,
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mmd->pass_index,
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mmd->layer_pass,
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1,
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gpl,
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gps,
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mmd->flag & GP_OFFSET_INVERT_LAYER,
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mmd->flag & GP_OFFSET_INVERT_PASS,
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mmd->flag & GP_OFFSET_INVERT_LAYERPASS,
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mmd->flag & GP_OFFSET_INVERT_MATERIAL))
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{
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return;
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}
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const bool is_randomized = !(is_zero_v3(mmd->rnd_offset) && is_zero_v3(mmd->rnd_rot) &&
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is_zero_v3(mmd->rnd_scale));
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const bool is_general = !(is_zero_v3(mmd->loc) && is_zero_v3(mmd->rot) &&
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is_zero_v3(mmd->scale));
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int seed = mmd->seed;
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/* Make sure different modifiers get different seeds. */
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seed += BLI_hash_string(ob->id.name + 2);
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seed += BLI_hash_string(md->name);
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float rand[3][3];
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float rand_offset = BLI_hash_int_01(seed);
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bGPdata *gpd = static_cast<bGPdata *>(ob->data);
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if (is_randomized && mmd->mode == GP_OFFSET_RANDOM) {
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/* Get stroke index for random offset. */
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int rnd_index = BLI_findindex(&gpf->strokes, gps);
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for (int j = 0; j < 3; j++) {
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const uint primes[3] = {2, 3, 7};
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double offset[3] = {0.0f, 0.0f, 0.0f};
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double r[3];
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/* To ensure a nice distribution, we use halton sequence and offset using the seed. */
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BLI_halton_3d(primes, offset, rnd_index, r);
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if ((mmd->flag & GP_OFFSET_UNIFORM_RANDOM_SCALE) && j == 2) {
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float rand_value;
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rand_value = fmodf(r[0] * 2.0f - 1.0f + rand_offset, 1.0f);
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rand_value = fmodf(sin(rand_value * 12.9898f + j * 78.233f) * 43758.5453f, 1.0f);
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copy_v3_fl(rand[j], rand_value);
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}
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else {
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for (int i = 0; i < 3; i++) {
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rand[j][i] = fmodf(r[i] * 2.0f - 1.0f + rand_offset, 1.0f);
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rand[j][i] = fmodf(sin(rand[j][i] * 12.9898f + j * 78.233f) * 43758.5453f, 1.0f);
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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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if (is_randomized) {
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const int step = max_ii(mmd->stroke_step, 1);
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const int start_offset = mmd->stroke_start_offset;
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int offset_index;
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int offset_size;
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float offset_factor;
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switch (mmd->mode) {
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case GP_OFFSET_STROKE:
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offset_size = max_ii(BLI_listbase_count(&gpf->strokes), 1);
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offset_index = max_ii(BLI_findindex(&gpf->strokes, gps), 0);
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break;
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case GP_OFFSET_MATERIAL:
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offset_size = max_ii(gpd->totcol, 1);
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offset_index = max_ii(gps->mat_nr, 0);
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break;
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case GP_OFFSET_LAYER:
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offset_size = max_ii(BLI_listbase_count(&gpd->layers), 1);
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offset_index = max_ii(BLI_findindex(&gpd->layers, gpl), 0);
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break;
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}
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offset_factor = ((offset_size - (offset_index / step + start_offset % offset_size) %
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offset_size * step % offset_size) -
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1) /
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float(offset_size);
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for (int j = 0; j < 3; j++) {
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for (int i = 0; i < 3; i++) {
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rand[j][i] = offset_factor;
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}
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}
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}
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}
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for (int i = 0; i < gps->totpoints; i++) {
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bGPDspoint *pt = &gps->points[i];
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MDeformVert *dvert = gps->dvert != nullptr ? &gps->dvert[i] : nullptr;
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/* Verify vertex group. */
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const float weight = get_modifier_point_weight(
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dvert, (mmd->flag & GP_OFFSET_INVERT_VGROUP) != 0, def_nr);
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if (weight < 0.0f) {
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continue;
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}
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/* Calculate Random matrix. */
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if (is_randomized) {
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float mat_rnd[4][4];
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float rnd_loc[3], rnd_rot[3], rnd_scale_weight[3];
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float rnd_scale[3] = {1.0f, 1.0f, 1.0f};
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mul_v3_v3fl(rnd_loc, rand[0], weight);
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mul_v3_v3fl(rnd_rot, rand[1], weight);
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mul_v3_v3fl(rnd_scale_weight, rand[2], weight);
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mul_v3_v3v3(rnd_loc, mmd->rnd_offset, rnd_loc);
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mul_v3_v3v3(rnd_rot, mmd->rnd_rot, rnd_rot);
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madd_v3_v3v3(rnd_scale, mmd->rnd_scale, rnd_scale_weight);
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loc_eul_size_to_mat4(mat_rnd, rnd_loc, rnd_rot, rnd_scale);
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/* Apply randomness matrix. */
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mul_m4_v3(mat_rnd, &pt->x);
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}
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/* Calculate matrix. */
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if (is_general) {
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mul_v3_v3fl(loc, mmd->loc, weight);
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mul_v3_v3fl(rot, mmd->rot, weight);
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mul_v3_v3fl(scale, mmd->scale, weight);
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add_v3_fl(scale, 1.0f);
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loc_eul_size_to_mat4(mat, loc, rot, scale);
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/* Apply scale to thickness. */
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float unit_scale = (fabsf(scale[0]) + fabsf(scale[1]) + fabsf(scale[2])) / 3.0f;
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pt->pressure *= unit_scale;
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mul_m4_v3(mat, &pt->x);
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}
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}
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/* Calc geometry data. */
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BKE_gpencil_stroke_geometry_update(gpd, gps);
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}
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static void bake_modifier(Main * /*bmain*/,
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Depsgraph *depsgraph,
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GpencilModifierData *md,
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Object *ob)
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{
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generic_bake_deform_stroke(depsgraph, md, ob, false, deform_stroke);
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}
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static void update_depsgraph(GpencilModifierData * /*md*/,
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const ModifierUpdateDepsgraphContext *ctx,
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const int /*mode*/)
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{
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DEG_add_object_relation(ctx->node, ctx->object, DEG_OB_COMP_TRANSFORM, "Offset Modifier");
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}
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static void foreach_ID_link(GpencilModifierData *md, Object *ob, IDWalkFunc walk, void *user_data)
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{
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OffsetGpencilModifierData *mmd = (OffsetGpencilModifierData *)md;
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walk(user_data, ob, (ID **)&mmd->material, IDWALK_CB_USER);
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}
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static void panel_draw(const bContext * /*C*/, Panel *panel)
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{
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uiLayout *layout = panel->layout;
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PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, nullptr);
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uiLayoutSetPropSep(layout, true);
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uiItemR(layout, ptr, "location", UI_ITEM_NONE, nullptr, ICON_NONE);
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uiItemR(layout, ptr, "rotation", UI_ITEM_NONE, nullptr, ICON_NONE);
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uiItemR(layout, ptr, "scale", UI_ITEM_NONE, nullptr, ICON_NONE);
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gpencil_modifier_panel_end(layout, ptr);
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uiLayoutSetActive(layout, true);
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}
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static void empty_panel_draw(const bContext * /*C*/, Panel *panel)
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{
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uiLayout *layout = panel->layout;
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PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, nullptr);
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uiLayoutSetPropSep(layout, true);
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gpencil_modifier_panel_end(layout, ptr);
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}
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static void random_panel_draw(const bContext * /*C*/, Panel *panel)
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{
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uiLayout *layout = panel->layout;
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uiLayout *col;
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PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, nullptr);
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int mode = RNA_enum_get(ptr, "mode");
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uiLayoutSetPropSep(layout, true);
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uiItemR(layout, ptr, "mode", UI_ITEM_NONE, nullptr, ICON_NONE);
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uiItemR(layout, ptr, "random_offset", UI_ITEM_NONE, IFACE_("Offset"), ICON_NONE);
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uiItemR(layout, ptr, "random_rotation", UI_ITEM_NONE, IFACE_("Rotation"), ICON_NONE);
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uiItemR(layout, ptr, "random_scale", UI_ITEM_NONE, IFACE_("Scale"), ICON_NONE);
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col = uiLayoutColumn(layout, true);
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switch (mode) {
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case GP_OFFSET_RANDOM:
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uiItemR(layout, ptr, "use_uniform_random_scale", UI_ITEM_NONE, nullptr, ICON_NONE);
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uiItemR(layout, ptr, "seed", UI_ITEM_NONE, nullptr, ICON_NONE);
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break;
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case GP_OFFSET_STROKE:
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uiItemR(col, ptr, "stroke_step", UI_ITEM_NONE, IFACE_("Stroke Step"), ICON_NONE);
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uiItemR(col, ptr, "stroke_start_offset", UI_ITEM_NONE, IFACE_("Offset"), ICON_NONE);
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break;
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case GP_OFFSET_MATERIAL:
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uiItemR(col, ptr, "stroke_step", UI_ITEM_NONE, IFACE_("Material Step"), ICON_NONE);
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uiItemR(col, ptr, "stroke_start_offset", UI_ITEM_NONE, IFACE_("Offset"), ICON_NONE);
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break;
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case GP_OFFSET_LAYER:
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uiItemR(col, ptr, "stroke_step", UI_ITEM_NONE, IFACE_("Layer Step"), ICON_NONE);
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uiItemR(col, ptr, "stroke_start_offset", UI_ITEM_NONE, IFACE_("Offset"), ICON_NONE);
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break;
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}
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gpencil_modifier_panel_end(layout, ptr);
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}
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static void mask_panel_draw(const bContext * /*C*/, Panel *panel)
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{
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gpencil_modifier_masking_panel_draw(panel, true, true);
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}
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static void panel_register(ARegionType *region_type)
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{
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PanelType *panel_type = gpencil_modifier_panel_register(
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region_type, eGpencilModifierType_Offset, empty_panel_draw);
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gpencil_modifier_subpanel_register(
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region_type, "general", "General", nullptr, panel_draw, panel_type);
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gpencil_modifier_subpanel_register(
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region_type, "randomize", "Advanced", nullptr, random_panel_draw, panel_type);
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gpencil_modifier_subpanel_register(
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region_type, "mask", "Influence", nullptr, mask_panel_draw, panel_type);
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}
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GpencilModifierTypeInfo modifierType_Gpencil_Offset = {
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/*name*/ N_("Offset"),
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/*struct_name*/ "OffsetGpencilModifierData",
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/*struct_size*/ sizeof(OffsetGpencilModifierData),
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/*type*/ eGpencilModifierTypeType_Gpencil,
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/*flags*/ eGpencilModifierTypeFlag_SupportsEditmode,
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/*copy_data*/ copy_data,
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/*deform_stroke*/ deform_stroke,
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/*generate_strokes*/ nullptr,
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/*bake_modifier*/ bake_modifier,
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/*remap_time*/ nullptr,
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/*init_data*/ init_data,
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/*free_data*/ nullptr,
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/*is_disabled*/ nullptr,
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/*update_depsgraph*/ update_depsgraph,
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/*depends_on_time*/ nullptr,
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/*foreach_ID_link*/ foreach_ID_link,
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/*foreach_tex_link*/ nullptr,
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/*panel_register*/ panel_register,
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};
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