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tornavis/source/blender/blenkernel/intern/editderivedmesh.c

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2005 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/blenkernel/intern/editderivedmesh.c
* \ingroup bke
*
* basic design:
*
* the bmesh derivedmesh exposes the mesh as triangles. it stores pointers
* to three loops per triangle. the derivedmesh stores a cache of tessellations
* for each face. this cache will smartly update as needed (though at first
* it'll simply be more brute force). keeping track of face/edge counts may
* be a small problem.
*
* this won't be the most efficient thing, considering that internal edges and
* faces of tessellations are exposed. looking up an edge by index in particular
* is likely to be a little slow.
*/
#include "atomic_ops.h"
#include "BLI_math.h"
#include "BLI_jitter_2d.h"
#include "BLI_bitmap.h"
#include "BLI_task.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_mesh.h"
#include "BKE_editmesh.h"
#include "BKE_editmesh_bvh.h"
#include "BKE_editmesh_tangent.h"
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#include "DNA_mesh_types.h"
#include "MEM_guardedalloc.h"
typedef struct EditDerivedBMesh {
DerivedMesh dm;
BMEditMesh *em;
EditMeshData emd;
} EditDerivedBMesh;
/* -------------------------------------------------------------------- */
/* Lazy initialize datastructures */
static void emDM_ensurePolyNormals(EditDerivedBMesh *bmdm);
static void emDM_ensureVertNormals(EditDerivedBMesh *bmdm)
{
if (bmdm->emd.vertexCos && (bmdm->emd.vertexNos == NULL)) {
BMesh *bm = bmdm->em->bm;
const float (*vertexCos)[3], (*polyNos)[3];
float (*vertexNos)[3];
/* calculate vertex normals from poly normals */
emDM_ensurePolyNormals(bmdm);
BM_mesh_elem_index_ensure(bm, BM_FACE);
polyNos = bmdm->emd.polyNos;
vertexCos = bmdm->emd.vertexCos;
vertexNos = MEM_callocN(sizeof(*vertexNos) * bm->totvert, __func__);
BM_verts_calc_normal_vcos(bm, polyNos, vertexCos, vertexNos);
bmdm->emd.vertexNos = (const float (*)[3])vertexNos;
}
}
static void emDM_ensurePolyNormals(EditDerivedBMesh *bmdm)
{
if (bmdm->emd.vertexCos && (bmdm->emd.polyNos == NULL)) {
BMesh *bm = bmdm->em->bm;
const float (*vertexCos)[3];
float (*polyNos)[3];
BMFace *efa;
BMIter fiter;
int i;
BM_mesh_elem_index_ensure(bm, BM_VERT);
polyNos = MEM_mallocN(sizeof(*polyNos) * bm->totface, __func__);
vertexCos = bmdm->emd.vertexCos;
BM_ITER_MESH_INDEX (efa, &fiter, bm, BM_FACES_OF_MESH, i) {
BM_elem_index_set(efa, i); /* set_inline */
BM_face_calc_normal_vcos(bm, efa, polyNos[i], vertexCos);
}
bm->elem_index_dirty &= ~BM_FACE;
bmdm->emd.polyNos = (const float (*)[3])polyNos;
}
}
static void emDM_ensurePolyCenters(EditDerivedBMesh *bmdm)
{
if (bmdm->emd.polyCos == NULL) {
BMesh *bm = bmdm->em->bm;
float (*polyCos)[3];
BMFace *efa;
BMIter fiter;
int i;
polyCos = MEM_mallocN(sizeof(*polyCos) * bm->totface, __func__);
if (bmdm->emd.vertexCos) {
const float (*vertexCos)[3];
vertexCos = bmdm->emd.vertexCos;
BM_mesh_elem_index_ensure(bm, BM_VERT);
BM_ITER_MESH_INDEX (efa, &fiter, bm, BM_FACES_OF_MESH, i) {
BM_face_calc_center_mean_vcos(bm, efa, polyCos[i], vertexCos);
}
}
else {
BM_ITER_MESH_INDEX (efa, &fiter, bm, BM_FACES_OF_MESH, i) {
BM_face_calc_center_mean(efa, polyCos[i]);
}
}
bmdm->emd.polyCos = (const float (*)[3])polyCos;
}
}
static void emDM_calcNormals(DerivedMesh *dm)
{
/* Nothing to do: normals are already calculated and stored on the
* BMVerts and BMFaces */
dm->dirty &= ~DM_DIRTY_NORMALS;
}
static void emDM_calcLoopNormalsSpaceArray(
DerivedMesh *dm, const bool use_split_normals, const float split_angle, MLoopNorSpaceArray *r_lnors_spacearr);
static void emDM_calcLoopNormals(DerivedMesh *dm, const bool use_split_normals, const float split_angle)
{
emDM_calcLoopNormalsSpaceArray(dm, use_split_normals, split_angle, NULL);
}
/* #define DEBUG_CLNORS */
static void emDM_calcLoopNormalsSpaceArray(
DerivedMesh *dm, const bool use_split_normals, const float split_angle, MLoopNorSpaceArray *r_lnors_spacearr)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
const float (*vertexCos)[3], (*vertexNos)[3], (*polyNos)[3];
float (*loopNos)[3];
short (*clnors_data)[2];
int cd_loop_clnors_offset;
/* calculate loop normals from poly and vertex normals */
emDM_ensureVertNormals(bmdm);
emDM_ensurePolyNormals(bmdm);
dm->dirty &= ~DM_DIRTY_NORMALS;
vertexCos = bmdm->emd.vertexCos;
vertexNos = bmdm->emd.vertexNos;
polyNos = bmdm->emd.polyNos;
loopNos = dm->getLoopDataArray(dm, CD_NORMAL);
if (!loopNos) {
DM_add_loop_layer(dm, CD_NORMAL, CD_CALLOC, NULL);
loopNos = dm->getLoopDataArray(dm, CD_NORMAL);
}
/* We can have both, give priority to dm's data, and fallback to bm's ones. */
clnors_data = dm->getLoopDataArray(dm, CD_CUSTOMLOOPNORMAL);
cd_loop_clnors_offset = clnors_data ? -1 : CustomData_get_offset(&bm->ldata, CD_CUSTOMLOOPNORMAL);
BM_loops_calc_normal_vcos(bm, vertexCos, vertexNos, polyNos, use_split_normals, split_angle, loopNos,
r_lnors_spacearr, clnors_data, cd_loop_clnors_offset);
#ifdef DEBUG_CLNORS
if (r_lnors_spacearr) {
int i;
for (i = 0; i < numLoops; i++) {
if (r_lnors_spacearr->lspacearr[i]->ref_alpha != 0.0f) {
LinkNode *loops = r_lnors_spacearr->lspacearr[i]->loops;
printf("Loop %d uses lnor space %p:\n", i, r_lnors_spacearr->lspacearr[i]);
print_v3("\tfinal lnor:", loopNos[i]);
print_v3("\tauto lnor:", r_lnors_spacearr->lspacearr[i]->vec_lnor);
print_v3("\tref_vec:", r_lnors_spacearr->lspacearr[i]->vec_ref);
printf("\talpha: %f\n\tbeta: %f\n\tloops: %p\n", r_lnors_spacearr->lspacearr[i]->ref_alpha,
r_lnors_spacearr->lspacearr[i]->ref_beta, r_lnors_spacearr->lspacearr[i]->loops);
printf("\t\t(shared with loops");
while (loops) {
printf(" %d", GET_INT_FROM_POINTER(loops->link));
loops = loops->next;
}
printf(")\n");
}
else {
printf("Loop %d has no lnor space\n", i);
}
}
}
#endif
}
static void emDM_calc_loop_tangents(
DerivedMesh *dm, bool calc_active_tangent,
const char (*tangent_names)[MAX_NAME], int tangent_names_len)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMEditMesh *em = bmdm->em;
if (CustomData_number_of_layers(&em->bm->ldata, CD_MLOOPUV) == 0) {
return;
}
const float (*poly_normals)[3] = bmdm->emd.polyNos;
const float (*loop_normals)[3] = CustomData_get_layer(&dm->loopData, CD_NORMAL);
const float (*vert_orco)[3] = dm->getVertDataArray(dm, CD_ORCO); /* can be NULL */
BKE_editmesh_loop_tangent_calc(
em, calc_active_tangent,
tangent_names, tangent_names_len,
poly_normals, loop_normals,
vert_orco,
&dm->loopData, dm->numLoopData,
&dm->tangent_mask);
}
static void emDM_recalcTessellation(DerivedMesh *UNUSED(dm))
{
/* do nothing */
}
static void emDM_recalcLoopTri(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMLoop *(*looptris)[3] = bmdm->em->looptris;
MLoopTri *mlooptri;
const int tottri = bmdm->em->tottri;
int i;
DM_ensure_looptri_data(dm);
mlooptri = dm->looptris.array_wip;
BLI_assert(tottri == 0 || mlooptri != NULL);
BLI_assert(poly_to_tri_count(dm->numPolyData, dm->numLoopData) == dm->looptris.num);
BLI_assert(tottri == dm->looptris.num);
BM_mesh_elem_index_ensure(bmdm->em->bm, BM_FACE | BM_LOOP);
for (i = 0; i < tottri; i++) {
BMLoop **ltri = looptris[i];
MLoopTri *lt = &mlooptri[i];
ARRAY_SET_ITEMS(
lt->tri,
BM_elem_index_get(ltri[0]),
BM_elem_index_get(ltri[1]),
BM_elem_index_get(ltri[2]));
lt->poly = BM_elem_index_get(ltri[0]->f);
}
BLI_assert(dm->looptris.array == NULL);
atomic_cas_ptr((void **)&dm->looptris.array, dm->looptris.array, dm->looptris.array_wip);
dm->looptris.array_wip = NULL;
}
static void emDM_foreachMappedVert(
DerivedMesh *dm,
void (*func)(void *userData, int index, const float co[3], const float no_f[3], const short no_s[3]),
void *userData,
DMForeachFlag flag)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
BMVert *eve;
BMIter iter;
int i;
if (bmdm->emd.vertexCos) {
const float (*vertexCos)[3] = bmdm->emd.vertexCos;
const float (*vertexNos)[3];
if (flag & DM_FOREACH_USE_NORMAL) {
emDM_ensureVertNormals(bmdm);
vertexNos = bmdm->emd.vertexNos;
}
else {
vertexNos = NULL;
}
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
const float *no = (flag & DM_FOREACH_USE_NORMAL) ? vertexNos[i] : NULL;
func(userData, i, vertexCos[i], no, NULL);
}
}
else {
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
const float *no = (flag & DM_FOREACH_USE_NORMAL) ? eve->no : NULL;
func(userData, i, eve->co, no, NULL);
}
}
}
static void emDM_foreachMappedEdge(
DerivedMesh *dm,
void (*func)(void *userData, int index, const float v0co[3], const float v1co[3]),
void *userData)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
BMEdge *eed;
BMIter iter;
int i;
if (bmdm->emd.vertexCos) {
BM_mesh_elem_index_ensure(bm, BM_VERT);
BM_ITER_MESH_INDEX (eed, &iter, bm, BM_EDGES_OF_MESH, i) {
func(userData, i,
bmdm->emd.vertexCos[BM_elem_index_get(eed->v1)],
bmdm->emd.vertexCos[BM_elem_index_get(eed->v2)]);
}
}
else {
BM_ITER_MESH_INDEX (eed, &iter, bm, BM_EDGES_OF_MESH, i) {
func(userData, i, eed->v1->co, eed->v2->co);
}
}
}
static void emDM_foreachMappedLoop(
DerivedMesh *dm,
void (*func)(void *userData, int vertex_index, int face_index, const float co[3], const float no[3]),
void *userData,
DMForeachFlag flag)
{
/* We can't use dm->getLoopDataLayout(dm) here, we want to always access dm->loopData, EditDerivedBMesh would
* return loop data from bmesh itself. */
const float (*lnors)[3] = (flag & DM_FOREACH_USE_NORMAL) ? DM_get_loop_data_layer(dm, CD_NORMAL) : NULL;
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
BMFace *efa;
BMIter iter;
const float (*vertexCos)[3] = bmdm->emd.vertexCos;
int f_idx;
BM_mesh_elem_index_ensure(bm, BM_VERT);
BM_ITER_MESH_INDEX (efa, &iter, bm, BM_FACES_OF_MESH, f_idx) {
BMLoop *l_iter, *l_first;
l_iter = l_first = BM_FACE_FIRST_LOOP(efa);
do {
const BMVert *eve = l_iter->v;
const int v_idx = BM_elem_index_get(eve);
const float *no = lnors ? *lnors++ : NULL;
func(userData, v_idx, f_idx, vertexCos ? vertexCos[v_idx] : eve->co, no);
} while ((l_iter = l_iter->next) != l_first);
}
}
static void emDM_foreachMappedFaceCenter(
DerivedMesh *dm,
void (*func)(void *userData, int index, const float co[3], const float no[3]),
void *userData,
DMForeachFlag flag)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
const float (*polyNos)[3];
const float (*polyCos)[3];
BMFace *efa;
BMIter iter;
int i;
emDM_ensurePolyCenters(bmdm);
polyCos = bmdm->emd.polyCos; /* always set */
if (flag & DM_FOREACH_USE_NORMAL) {
emDM_ensurePolyNormals(bmdm);
polyNos = bmdm->emd.polyNos; /* maybe NULL */
}
else {
polyNos = NULL;
}
if (polyNos) {
BM_ITER_MESH_INDEX (efa, &iter, bm, BM_FACES_OF_MESH, i) {
const float *no = polyNos[i];
func(userData, i, polyCos[i], no);
}
}
else {
BM_ITER_MESH_INDEX (efa, &iter, bm, BM_FACES_OF_MESH, i) {
const float *no = (flag & DM_FOREACH_USE_NORMAL) ? efa->no : NULL;
func(userData, i, polyCos[i], no);
}
}
}
static void emDM_getMinMax(DerivedMesh *dm, float r_min[3], float r_max[3])
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
BMVert *eve;
BMIter iter;
int i;
if (bm->totvert) {
if (bmdm->emd.vertexCos) {
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
minmax_v3v3_v3(r_min, r_max, bmdm->emd.vertexCos[i]);
}
}
else {
BM_ITER_MESH (eve, &iter, bm, BM_VERTS_OF_MESH) {
minmax_v3v3_v3(r_min, r_max, eve->co);
}
}
}
else {
zero_v3(r_min);
zero_v3(r_max);
}
}
static int emDM_getNumVerts(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
return bmdm->em->bm->totvert;
}
static int emDM_getNumEdges(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
return bmdm->em->bm->totedge;
}
static int emDM_getNumTessFaces(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
return bmdm->em->tottri;
}
static int emDM_getNumLoops(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
return bmdm->em->bm->totloop;
}
static int emDM_getNumPolys(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
return bmdm->em->bm->totface;
}
static void bmvert_to_mvert(BMesh *bm, BMVert *ev, MVert *r_vert)
{
const float *f;
copy_v3_v3(r_vert->co, ev->co);
normal_float_to_short_v3(r_vert->no, ev->no);
r_vert->flag = BM_vert_flag_to_mflag(ev);
if ((f = CustomData_bmesh_get(&bm->vdata, ev->head.data, CD_BWEIGHT))) {
r_vert->bweight = (unsigned char)((*f) * 255.0f);
}
}
static void emDM_getVert(DerivedMesh *dm, int index, MVert *r_vert)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
BMVert *ev;
if (UNLIKELY(index < 0 || index >= bm->totvert)) {
BLI_assert(!"error in emDM_getVert");
return;
}
BLI_assert((bm->elem_table_dirty & BM_VERT) == 0);
ev = bm->vtable[index]; /* should be BM_vert_at_index() */
// ev = BM_vert_at_index(bm, index); /* warning, does list loop, _not_ ideal */
bmvert_to_mvert(bm, ev, r_vert);
if (bmdm->emd.vertexCos)
copy_v3_v3(r_vert->co, bmdm->emd.vertexCos[index]);
}
static void emDM_getVertCo(DerivedMesh *dm, int index, float r_co[3])
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
if (UNLIKELY(index < 0 || index >= bm->totvert)) {
BLI_assert(!"error in emDM_getVertCo");
return;
}
if (bmdm->emd.vertexCos) {
copy_v3_v3(r_co, bmdm->emd.vertexCos[index]);
}
else {
BMVert *ev;
BLI_assert((bm->elem_table_dirty & BM_VERT) == 0);
ev = bm->vtable[index]; /* should be BM_vert_at_index() */
// ev = BM_vert_at_index(bm, index); /* warning, does list loop, _not_ ideal */
copy_v3_v3(r_co, ev->co);
}
}
static void emDM_getVertNo(DerivedMesh *dm, int index, float r_no[3])
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
if (UNLIKELY(index < 0 || index >= bm->totvert)) {
BLI_assert(!"error in emDM_getVertNo");
return;
}
if (bmdm->emd.vertexCos) {
emDM_ensureVertNormals(bmdm);
copy_v3_v3(r_no, bmdm->emd.vertexNos[index]);
}
else {
BMVert *ev;
BLI_assert((bm->elem_table_dirty & BM_VERT) == 0);
ev = bm->vtable[index]; /* should be BM_vert_at_index() */
// ev = BM_vert_at_index(bm, index); /* warning, does list loop, _not_ ideal */
copy_v3_v3(r_no, ev->no);
}
}
static void emDM_getPolyNo(DerivedMesh *dm, int index, float r_no[3])
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
if (UNLIKELY(index < 0 || index >= bm->totface)) {
BLI_assert(!"error in emDM_getPolyNo");
return;
}
if (bmdm->emd.vertexCos) {
emDM_ensurePolyNormals(bmdm);
copy_v3_v3(r_no, bmdm->emd.polyNos[index]);
}
else {
BMFace *efa;
BLI_assert((bm->elem_table_dirty & BM_FACE) == 0);
efa = bm->ftable[index]; /* should be BM_vert_at_index() */
// efa = BM_face_at_index(bm, index); /* warning, does list loop, _not_ ideal */
copy_v3_v3(r_no, efa->no);
}
}
static void emDM_getEdge(DerivedMesh *dm, int index, MEdge *r_edge)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
BMEdge *e;
const float *f;
if (UNLIKELY(index < 0 || index >= bm->totedge)) {
BLI_assert(!"error in emDM_getEdge");
return;
}
BLI_assert((bm->elem_table_dirty & BM_EDGE) == 0);
e = bm->etable[index]; /* should be BM_edge_at_index() */
// e = BM_edge_at_index(bm, index); /* warning, does list loop, _not_ ideal */
r_edge->flag = BM_edge_flag_to_mflag(e);
r_edge->v1 = BM_elem_index_get(e->v1);
r_edge->v2 = BM_elem_index_get(e->v2);
if ((f = CustomData_bmesh_get(&bm->edata, e->head.data, CD_BWEIGHT))) {
r_edge->bweight = (unsigned char)((*f) * 255.0f);
}
if ((f = CustomData_bmesh_get(&bm->edata, e->head.data, CD_CREASE))) {
r_edge->crease = (unsigned char)((*f) * 255.0f);
}
}
static void emDM_getTessFace(DerivedMesh *dm, int index, MFace *r_face)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMFace *ef;
BMLoop **ltri;
if (UNLIKELY(index < 0 || index >= bmdm->em->tottri)) {
BLI_assert(!"error in emDM_getTessFace");
return;
}
ltri = bmdm->em->looptris[index];
ef = ltri[0]->f;
r_face->mat_nr = (unsigned char) ef->mat_nr;
r_face->flag = BM_face_flag_to_mflag(ef);
r_face->v1 = BM_elem_index_get(ltri[0]->v);
r_face->v2 = BM_elem_index_get(ltri[1]->v);
r_face->v3 = BM_elem_index_get(ltri[2]->v);
r_face->v4 = 0;
test_index_face(r_face, NULL, 0, 3);
}
static void emDM_copyVertArray(DerivedMesh *dm, MVert *r_vert)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
BMVert *eve;
BMIter iter;
const int cd_vert_bweight_offset = CustomData_get_offset(&bm->vdata, CD_BWEIGHT);
if (bmdm->emd.vertexCos) {
int i;
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
copy_v3_v3(r_vert->co, bmdm->emd.vertexCos[i]);
normal_float_to_short_v3(r_vert->no, eve->no);
r_vert->flag = BM_vert_flag_to_mflag(eve);
r_vert->bweight = (cd_vert_bweight_offset != -1) ? BM_ELEM_CD_GET_FLOAT_AS_UCHAR(eve, cd_vert_bweight_offset) : 0;
r_vert++;
}
}
else {
BM_ITER_MESH (eve, &iter, bm, BM_VERTS_OF_MESH) {
copy_v3_v3(r_vert->co, eve->co);
normal_float_to_short_v3(r_vert->no, eve->no);
r_vert->flag = BM_vert_flag_to_mflag(eve);
r_vert->bweight = (cd_vert_bweight_offset != -1) ? BM_ELEM_CD_GET_FLOAT_AS_UCHAR(eve, cd_vert_bweight_offset) : 0;
r_vert++;
}
}
}
static void emDM_copyEdgeArray(DerivedMesh *dm, MEdge *r_edge)
{
BMesh *bm = ((EditDerivedBMesh *)dm)->em->bm;
BMEdge *eed;
BMIter iter;
const int cd_edge_bweight_offset = CustomData_get_offset(&bm->edata, CD_BWEIGHT);
const int cd_edge_crease_offset = CustomData_get_offset(&bm->edata, CD_CREASE);
BM_mesh_elem_index_ensure(bm, BM_VERT);
BM_ITER_MESH (eed, &iter, bm, BM_EDGES_OF_MESH) {
r_edge->v1 = BM_elem_index_get(eed->v1);
r_edge->v2 = BM_elem_index_get(eed->v2);
r_edge->flag = BM_edge_flag_to_mflag(eed);
r_edge->crease = (cd_edge_crease_offset != -1) ? BM_ELEM_CD_GET_FLOAT_AS_UCHAR(eed, cd_edge_crease_offset) : 0;
r_edge->bweight = (cd_edge_bweight_offset != -1) ? BM_ELEM_CD_GET_FLOAT_AS_UCHAR(eed, cd_edge_bweight_offset) : 0;
r_edge++;
}
}
static void emDM_copyTessFaceArray(DerivedMesh *dm, MFace *r_face)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
struct BMLoop *(*looptris)[3] = bmdm->em->looptris;
BMFace *ef;
int i;
BM_mesh_elem_index_ensure(bm, BM_VERT);
for (i = 0; i < bmdm->em->tottri; i++, r_face++) {
BMLoop **ltri = looptris[i];
ef = ltri[0]->f;
r_face->mat_nr = (unsigned char) ef->mat_nr;
r_face->flag = BM_face_flag_to_mflag(ef);
r_face->edcode = 0;
r_face->v1 = BM_elem_index_get(ltri[0]->v);
r_face->v2 = BM_elem_index_get(ltri[1]->v);
r_face->v3 = BM_elem_index_get(ltri[2]->v);
r_face->v4 = 0;
test_index_face(r_face, NULL, 0, 3);
}
}
static void emDM_copyLoopArray(DerivedMesh *dm, MLoop *r_loop)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
BMIter iter;
BMFace *efa;
BM_mesh_elem_index_ensure(bm, BM_VERT | BM_EDGE);
BM_ITER_MESH (efa, &iter, bm, BM_FACES_OF_MESH) {
BMLoop *l_iter, *l_first;
l_iter = l_first = BM_FACE_FIRST_LOOP(efa);
do {
r_loop->v = BM_elem_index_get(l_iter->v);
r_loop->e = BM_elem_index_get(l_iter->e);
r_loop++;
} while ((l_iter = l_iter->next) != l_first);
}
}
static void emDM_copyPolyArray(DerivedMesh *dm, MPoly *r_poly)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
BMIter iter;
BMFace *efa;
int i;
i = 0;
BM_ITER_MESH (efa, &iter, bm, BM_FACES_OF_MESH) {
r_poly->flag = BM_face_flag_to_mflag(efa);
r_poly->loopstart = i;
r_poly->totloop = efa->len;
r_poly->mat_nr = efa->mat_nr;
r_poly++;
i += efa->len;
}
}
static void *emDM_getTessFaceDataArray(DerivedMesh *dm, int type)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
void *datalayer;
datalayer = DM_get_tessface_data_layer(dm, type);
if (datalayer)
return datalayer;
/* layers are store per face for editmesh, we convert to a temporary
* data layer array in the derivedmesh when these are requested */
if (type == CD_MTFACE || type == CD_MCOL) {
const char *bmdata;
char *data;
bool has_type_source = CustomData_has_layer(&bm->ldata, (type == CD_MTFACE) ? CD_MLOOPUV : CD_MLOOPCOL);
if (has_type_source) {
/* offset = bm->pdata.layers[index].offset; */ /* UNUSED */
BMLoop *(*looptris)[3] = bmdm->em->looptris;
const int size = CustomData_sizeof(type);
int i, j;
DM_add_tessface_layer(dm, type, CD_CALLOC, NULL);
const int index = CustomData_get_layer_index(&dm->faceData, type);
dm->faceData.layers[index].flag |= CD_FLAG_TEMPORARY;
data = datalayer = DM_get_tessface_data_layer(dm, type);
if (type == CD_MTFACE) {
const int cd_loop_uv_offset = CustomData_get_offset(&bm->ldata, CD_MLOOPUV);
for (i = 0; i < bmdm->em->tottri; i++, data += size) {
for (j = 0; j < 3; j++) {
// bmdata = CustomData_bmesh_get(&bm->ldata, looptris[i][j]->head.data, CD_MLOOPUV);
bmdata = BM_ELEM_CD_GET_VOID_P(looptris[i][j], cd_loop_uv_offset);
copy_v2_v2(((MTFace *)data)->uv[j], ((const MLoopUV *)bmdata)->uv);
}
}
}
else {
const int cd_loop_color_offset = CustomData_get_offset(&bm->ldata, CD_MLOOPCOL);
for (i = 0; i < bmdm->em->tottri; i++, data += size) {
for (j = 0; j < 3; j++) {
// bmdata = CustomData_bmesh_get(&bm->ldata, looptris[i][j]->head.data, CD_MLOOPCOL);
bmdata = BM_ELEM_CD_GET_VOID_P(looptris[i][j], cd_loop_color_offset);
MESH_MLOOPCOL_TO_MCOL(((const MLoopCol *)bmdata), (((MCol *)data) + j));
}
}
}
}
}
/* Special handling for CD_TESSLOOPNORMAL, we generate it on demand as well. */
if (type == CD_TESSLOOPNORMAL) {
const float (*lnors)[3] = dm->getLoopDataArray(dm, CD_NORMAL);
if (lnors) {
BMLoop *(*looptris)[3] = bmdm->em->looptris;
short (*tlnors)[4][3], (*tlnor)[4][3];
int index, i, j;
DM_add_tessface_layer(dm, type, CD_CALLOC, NULL);
index = CustomData_get_layer_index(&dm->faceData, type);
dm->faceData.layers[index].flag |= CD_FLAG_TEMPORARY;
tlnor = tlnors = DM_get_tessface_data_layer(dm, type);
BM_mesh_elem_index_ensure(bm, BM_LOOP);
for (i = 0; i < bmdm->em->tottri; i++, tlnor++, looptris++) {
for (j = 0; j < 3; j++) {
normal_float_to_short_v3((*tlnor)[j], lnors[BM_elem_index_get((*looptris)[j])]);
}
}
}
}
return datalayer;
}
static void emDM_getVertCos(DerivedMesh *dm, float (*r_cos)[3])
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BMesh *bm = bmdm->em->bm;
BMVert *eve;
BMIter iter;
int i;
if (bmdm->emd.vertexCos) {
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
copy_v3_v3(r_cos[i], bmdm->emd.vertexCos[i]);
}
}
else {
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
copy_v3_v3(r_cos[i], eve->co);
}
}
}
static void emDM_release(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
if (DM_release(dm)) {
if (bmdm->emd.vertexCos) {
MEM_freeN((void *)bmdm->emd.vertexCos);
if (bmdm->emd.vertexNos) {
MEM_freeN((void *)bmdm->emd.vertexNos);
}
if (bmdm->emd.polyNos) {
MEM_freeN((void *)bmdm->emd.polyNos);
}
}
if (bmdm->emd.polyCos) {
MEM_freeN((void *)bmdm->emd.polyCos);
}
MEM_freeN(bmdm);
}
}
static CustomData *bmDm_getVertDataLayout(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
return &bmdm->em->bm->vdata;
}
static CustomData *bmDm_getEdgeDataLayout(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
return &bmdm->em->bm->edata;
}
static CustomData *bmDm_getTessFaceDataLayout(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
return &bmdm->dm.faceData;
}
static CustomData *bmDm_getLoopDataLayout(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
return &bmdm->em->bm->ldata;
}
static CustomData *bmDm_getPolyDataLayout(DerivedMesh *dm)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
return &bmdm->em->bm->pdata;
}
/**
* \note This may be called per-draw,
* avoid allocating large arrays where possible and keep this a thin wrapper for #BMesh.
*/
DerivedMesh *getEditDerivedBMesh(
BMEditMesh *em, struct Object *UNUSED(ob),
CustomDataMask data_mask,
float (*vertexCos)[3])
{
EditDerivedBMesh *bmdm = MEM_callocN(sizeof(*bmdm), __func__);
BMesh *bm = em->bm;
bmdm->em = em;
DM_init((DerivedMesh *)bmdm, DM_TYPE_EDITBMESH, bm->totvert,
bm->totedge, em->tottri, bm->totloop, bm->totface);
/* could also get from the objects mesh directly */
bmdm->dm.cd_flag = BM_mesh_cd_flag_from_bmesh(bm);
bmdm->dm.getVertCos = emDM_getVertCos;
bmdm->dm.getMinMax = emDM_getMinMax;
bmdm->dm.getVertDataLayout = bmDm_getVertDataLayout;
bmdm->dm.getEdgeDataLayout = bmDm_getEdgeDataLayout;
bmdm->dm.getTessFaceDataLayout = bmDm_getTessFaceDataLayout;
bmdm->dm.getLoopDataLayout = bmDm_getLoopDataLayout;
bmdm->dm.getPolyDataLayout = bmDm_getPolyDataLayout;
bmdm->dm.getNumVerts = emDM_getNumVerts;
bmdm->dm.getNumEdges = emDM_getNumEdges;
bmdm->dm.getNumTessFaces = emDM_getNumTessFaces;
bmdm->dm.getNumLoops = emDM_getNumLoops;
bmdm->dm.getNumPolys = emDM_getNumPolys;
bmdm->dm.getVert = emDM_getVert;
bmdm->dm.getVertCo = emDM_getVertCo;
bmdm->dm.getVertNo = emDM_getVertNo;
bmdm->dm.getPolyNo = emDM_getPolyNo;
bmdm->dm.getEdge = emDM_getEdge;
bmdm->dm.getTessFace = emDM_getTessFace;
bmdm->dm.copyVertArray = emDM_copyVertArray;
bmdm->dm.copyEdgeArray = emDM_copyEdgeArray;
bmdm->dm.copyTessFaceArray = emDM_copyTessFaceArray;
bmdm->dm.copyLoopArray = emDM_copyLoopArray;
bmdm->dm.copyPolyArray = emDM_copyPolyArray;
bmdm->dm.getTessFaceDataArray = emDM_getTessFaceDataArray;
bmdm->dm.calcNormals = emDM_calcNormals;
bmdm->dm.calcLoopNormals = emDM_calcLoopNormals;
bmdm->dm.calcLoopNormalsSpaceArray = emDM_calcLoopNormalsSpaceArray;
bmdm->dm.calcLoopTangents = emDM_calc_loop_tangents;
bmdm->dm.recalcTessellation = emDM_recalcTessellation;
bmdm->dm.recalcLoopTri = emDM_recalcLoopTri;
bmdm->dm.foreachMappedVert = emDM_foreachMappedVert;
bmdm->dm.foreachMappedLoop = emDM_foreachMappedLoop;
bmdm->dm.foreachMappedEdge = emDM_foreachMappedEdge;
bmdm->dm.foreachMappedFaceCenter = emDM_foreachMappedFaceCenter;
bmdm->dm.release = emDM_release;
bmdm->emd.vertexCos = (const float (*)[3])vertexCos;
bmdm->dm.deformedOnly = (vertexCos != NULL);
const int cd_dvert_offset = (data_mask & CD_MASK_MDEFORMVERT) ?
CustomData_get_offset(&bm->vdata, CD_MDEFORMVERT) : -1;
if (cd_dvert_offset != -1) {
BMIter iter;
BMVert *eve;
int i;
DM_add_vert_layer(&bmdm->dm, CD_MDEFORMVERT, CD_CALLOC, NULL);
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
DM_set_vert_data(&bmdm->dm, i, CD_MDEFORMVERT,
BM_ELEM_CD_GET_VOID_P(eve, cd_dvert_offset));
}
}
const int cd_skin_offset = (data_mask & CD_MASK_MVERT_SKIN) ?
CustomData_get_offset(&bm->vdata, CD_MVERT_SKIN) : -1;
if (cd_skin_offset != -1) {
BMIter iter;
BMVert *eve;
int i;
DM_add_vert_layer(&bmdm->dm, CD_MVERT_SKIN, CD_CALLOC, NULL);
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
DM_set_vert_data(&bmdm->dm, i, CD_MVERT_SKIN,
BM_ELEM_CD_GET_VOID_P(eve, cd_skin_offset));
}
}
return (DerivedMesh *)bmdm;
}
/* -------------------------------------------------------------------- */
/* StatVis Functions */
static void axis_from_enum_v3(float v[3], const char axis)
{
zero_v3(v);
if (axis < 3) v[axis] = 1.0f;
else v[axis - 3] = -1.0f;
}
static void statvis_calc_overhang(
BMEditMesh *em,
const float (*polyNos)[3],
/* values for calculating */
const float min, const float max, const char axis,
/* result */
unsigned char (*r_face_colors)[4])
{
BMIter iter;
BMesh *bm = em->bm;
BMFace *f;
float dir[3];
int index;
const float minmax_irange = 1.0f / (max - min);
bool is_max;
/* fallback */
unsigned char col_fallback[4] = {64, 64, 64, 255}; /* gray */
unsigned char col_fallback_max[4] = {0, 0, 0, 255}; /* max color */
BLI_assert(min <= max);
axis_from_enum_v3(dir, axis);
if (LIKELY(em->ob)) {
mul_transposed_mat3_m4_v3(em->ob->obmat, dir);
normalize_v3(dir);
}
/* fallback max */
{
float fcol[3];
weight_to_rgb(fcol, 1.0f);
rgb_float_to_uchar(col_fallback_max, fcol);
}
/* now convert into global space */
BM_ITER_MESH_INDEX (f, &iter, bm, BM_FACES_OF_MESH, index) {
float fac = angle_normalized_v3v3(polyNos ? polyNos[index] : f->no, dir) / (float)M_PI;
/* remap */
if ((is_max = (fac <= max)) && (fac >= min)) {
float fcol[3];
fac = (fac - min) * minmax_irange;
fac = 1.0f - fac;
CLAMP(fac, 0.0f, 1.0f);
weight_to_rgb(fcol, fac);
rgb_float_to_uchar(r_face_colors[index], fcol);
}
else {
const unsigned char *fallback = is_max ? col_fallback_max : col_fallback;
copy_v4_v4_uchar(r_face_colors[index], fallback);
}
}
}
/* so we can use jitter values for face interpolation */
static void uv_from_jitter_v2(float uv[2])
{
uv[0] += 0.5f;
uv[1] += 0.5f;
if (uv[0] + uv[1] > 1.0f) {
uv[0] = 1.0f - uv[0];
uv[1] = 1.0f - uv[1];
}
CLAMP(uv[0], 0.0f, 1.0f);
CLAMP(uv[1], 0.0f, 1.0f);
}
static void statvis_calc_thickness(
BMEditMesh *em,
const float (*vertexCos)[3],
/* values for calculating */
const float min, const float max, const int samples,
/* result */
unsigned char (*r_face_colors)[4])
{
const float eps_offset = 0.00002f; /* values <= 0.00001 give errors */
float *face_dists = (float *)r_face_colors; /* cheating */
const bool use_jit = samples < 32;
float jit_ofs[32][2];
BMesh *bm = em->bm;
const int tottri = em->tottri;
const float minmax_irange = 1.0f / (max - min);
int i;
struct BMLoop *(*looptris)[3] = em->looptris;
/* fallback */
const unsigned char col_fallback[4] = {64, 64, 64, 255};
struct BMBVHTree *bmtree;
BLI_assert(min <= max);
copy_vn_fl(face_dists, em->bm->totface, max);
if (use_jit) {
int j;
BLI_assert(samples < 32);
BLI_jitter_init(jit_ofs, samples);
for (j = 0; j < samples; j++) {
uv_from_jitter_v2(jit_ofs[j]);
}
}
BM_mesh_elem_index_ensure(bm, BM_FACE);
if (vertexCos) {
BM_mesh_elem_index_ensure(bm, BM_VERT);
}
bmtree = BKE_bmbvh_new_from_editmesh(em, 0, vertexCos, false);
for (i = 0; i < tottri; i++) {
BMFace *f_hit;
BMLoop **ltri = looptris[i];
const int index = BM_elem_index_get(ltri[0]->f);
const float *cos[3];
float ray_co[3];
float ray_no[3];
if (vertexCos) {
cos[0] = vertexCos[BM_elem_index_get(ltri[0]->v)];
cos[1] = vertexCos[BM_elem_index_get(ltri[1]->v)];
cos[2] = vertexCos[BM_elem_index_get(ltri[2]->v)];
}
else {
cos[0] = ltri[0]->v->co;
cos[1] = ltri[1]->v->co;
cos[2] = ltri[2]->v->co;
}
normal_tri_v3(ray_no, cos[2], cos[1], cos[0]);
#define FACE_RAY_TEST_ANGLE \
f_hit = BKE_bmbvh_ray_cast(bmtree, ray_co, ray_no, 0.0f, \
&dist, NULL, NULL); \
if (f_hit && dist < face_dists[index]) { \
float angle_fac = fabsf(dot_v3v3(ltri[0]->f->no, f_hit->no)); \
angle_fac = 1.0f - angle_fac; \
angle_fac = angle_fac * angle_fac * angle_fac; \
angle_fac = 1.0f - angle_fac; \
dist /= angle_fac; \
if (dist < face_dists[index]) { \
face_dists[index] = dist; \
} \
} (void)0
if (use_jit) {
int j;
for (j = 0; j < samples; j++) {
float dist = face_dists[index];
interp_v3_v3v3v3_uv(ray_co, cos[0], cos[1], cos[2], jit_ofs[j]);
madd_v3_v3fl(ray_co, ray_no, eps_offset);
FACE_RAY_TEST_ANGLE;
}
}
else {
float dist = face_dists[index];
mid_v3_v3v3v3(ray_co, cos[0], cos[1], cos[2]);
madd_v3_v3fl(ray_co, ray_no, eps_offset);
FACE_RAY_TEST_ANGLE;
}
}
BKE_bmbvh_free(bmtree);
/* convert floats into color! */
for (i = 0; i < bm->totface; i++) {
float fac = face_dists[i];
/* important not '<=' */
if (fac < max) {
float fcol[3];
fac = (fac - min) * minmax_irange;
fac = 1.0f - fac;
CLAMP(fac, 0.0f, 1.0f);
weight_to_rgb(fcol, fac);
rgb_float_to_uchar(r_face_colors[i], fcol);
}
else {
copy_v4_v4_uchar(r_face_colors[i], col_fallback);
}
}
}
static void statvis_calc_intersect(
BMEditMesh *em,
const float (*vertexCos)[3],
/* result */
unsigned char (*r_face_colors)[4])
{
BMesh *bm = em->bm;
int i;
/* fallback */
// const char col_fallback[4] = {64, 64, 64, 255};
float fcol[3];
unsigned char col[3];
struct BMBVHTree *bmtree;
BVHTreeOverlap *overlap;
unsigned int overlap_len;
memset(r_face_colors, 64, sizeof(int) * em->bm->totface);
BM_mesh_elem_index_ensure(bm, BM_FACE);
if (vertexCos) {
BM_mesh_elem_index_ensure(bm, BM_VERT);
}
bmtree = BKE_bmbvh_new_from_editmesh(em, 0, vertexCos, false);
overlap = BKE_bmbvh_overlap(bmtree, bmtree, &overlap_len);
/* same for all faces */
weight_to_rgb(fcol, 1.0f);
rgb_float_to_uchar(col, fcol);
if (overlap) {
for (i = 0; i < overlap_len; i++) {
BMFace *f_hit_pair[2] = {
em->looptris[overlap[i].indexA][0]->f,
em->looptris[overlap[i].indexB][0]->f,
};
int j;
for (j = 0; j < 2; j++) {
BMFace *f_hit = f_hit_pair[j];
int index;
index = BM_elem_index_get(f_hit);
copy_v3_v3_uchar(r_face_colors[index], col);
}
}
MEM_freeN(overlap);
}
BKE_bmbvh_free(bmtree);
}
static void statvis_calc_distort(
BMEditMesh *em,
const float (*vertexCos)[3], const float (*polyNos)[3],
/* values for calculating */
const float min, const float max,
/* result */
unsigned char (*r_face_colors)[4])
{
BMIter iter;
BMesh *bm = em->bm;
BMFace *f;
const float *f_no;
int index;
const float minmax_irange = 1.0f / (max - min);
/* fallback */
const unsigned char col_fallback[4] = {64, 64, 64, 255};
/* now convert into global space */
BM_ITER_MESH_INDEX (f, &iter, bm, BM_FACES_OF_MESH, index) {
float fac;
if (f->len == 3) {
fac = -1.0f;
}
else {
BMLoop *l_iter, *l_first;
if (vertexCos) {
f_no = polyNos[index];
}
else {
f_no = f->no;
}
fac = 0.0f;
l_iter = l_first = BM_FACE_FIRST_LOOP(f);
do {
float no_corner[3];
if (vertexCos) {
normal_tri_v3(no_corner,
vertexCos[BM_elem_index_get(l_iter->prev->v)],
vertexCos[BM_elem_index_get(l_iter->v)],
vertexCos[BM_elem_index_get(l_iter->next->v)]);
}
else {
BM_loop_calc_face_normal_safe(l_iter, no_corner);
}
/* simple way to detect (what is most likely) concave */
if (dot_v3v3(f_no, no_corner) < 0.0f) {
negate_v3(no_corner);
}
fac = max_ff(fac, angle_normalized_v3v3(f_no, no_corner));
} while ((l_iter = l_iter->next) != l_first);
fac *= 2.0f;
}
/* remap */
if (fac >= min) {
float fcol[3];
fac = (fac - min) * minmax_irange;
CLAMP(fac, 0.0f, 1.0f);
weight_to_rgb(fcol, fac);
rgb_float_to_uchar(r_face_colors[index], fcol);
}
else {
copy_v4_v4_uchar(r_face_colors[index], col_fallback);
}
}
}
static void statvis_calc_sharp(
BMEditMesh *em,
const float (*vertexCos)[3],
/* values for calculating */
const float min, const float max,
/* result */
unsigned char (*r_vert_colors)[4])
{
float *vert_angles = (float *)r_vert_colors; /* cheating */
BMIter iter;
BMesh *bm = em->bm;
BMEdge *e;
//float f_no[3];
const float minmax_irange = 1.0f / (max - min);
int i;
/* fallback */
const unsigned char col_fallback[4] = {64, 64, 64, 255};
(void)vertexCos; /* TODO */
copy_vn_fl(vert_angles, em->bm->totvert, -M_PI);
/* first assign float values to verts */
BM_ITER_MESH (e, &iter, bm, BM_EDGES_OF_MESH) {
float angle = BM_edge_calc_face_angle_signed(e);
float *col1 = &vert_angles[BM_elem_index_get(e->v1)];
float *col2 = &vert_angles[BM_elem_index_get(e->v2)];
*col1 = max_ff(*col1, angle);
*col2 = max_ff(*col2, angle);
}
/* convert floats into color! */
for (i = 0; i < bm->totvert; i++) {
float fac = vert_angles[i];
/* important not '<=' */
if (fac > min) {
float fcol[3];
fac = (fac - min) * minmax_irange;
CLAMP(fac, 0.0f, 1.0f);
weight_to_rgb(fcol, fac);
rgb_float_to_uchar(r_vert_colors[i], fcol);
}
else {
copy_v4_v4_uchar(r_vert_colors[i], col_fallback);
}
}
}
void BKE_editmesh_statvis_calc(
BMEditMesh *em, DerivedMesh *dm,
const MeshStatVis *statvis)
{
EditDerivedBMesh *bmdm = (EditDerivedBMesh *)dm;
BLI_assert(dm == NULL || dm->type == DM_TYPE_EDITBMESH);
switch (statvis->type) {
case SCE_STATVIS_OVERHANG:
{
BKE_editmesh_color_ensure(em, BM_FACE);
statvis_calc_overhang(
em, bmdm ? bmdm->emd.polyNos : NULL,
statvis->overhang_min / (float)M_PI,
statvis->overhang_max / (float)M_PI,
statvis->overhang_axis,
em->derivedFaceColor);
break;
}
case SCE_STATVIS_THICKNESS:
{
const float scale = 1.0f / mat4_to_scale(em->ob->obmat);
BKE_editmesh_color_ensure(em, BM_FACE);
statvis_calc_thickness(
em, bmdm ? bmdm->emd.vertexCos : NULL,
statvis->thickness_min * scale,
statvis->thickness_max * scale,
statvis->thickness_samples,
em->derivedFaceColor);
break;
}
case SCE_STATVIS_INTERSECT:
{
BKE_editmesh_color_ensure(em, BM_FACE);
statvis_calc_intersect(
em, bmdm ? bmdm->emd.vertexCos : NULL,
em->derivedFaceColor);
break;
}
case SCE_STATVIS_DISTORT:
{
BKE_editmesh_color_ensure(em, BM_FACE);
if (bmdm)
emDM_ensurePolyNormals(bmdm);
statvis_calc_distort(
em, bmdm ? bmdm->emd.vertexCos : NULL, bmdm ? bmdm->emd.polyNos : NULL,
statvis->distort_min,
statvis->distort_max,
em->derivedFaceColor);
break;
}
case SCE_STATVIS_SHARP:
{
BKE_editmesh_color_ensure(em, BM_VERT);
statvis_calc_sharp(
em, bmdm ? bmdm->emd.vertexCos : NULL,
statvis->sharp_min,
statvis->sharp_max,
/* in this case they are vertex colors */
em->derivedVertColor);
break;
}
}
}
/* -------------------------------------------------------------------- */
/* Editmesh Vert Coords */
struct CageUserData {
int totvert;
float (*cos_cage)[3];
BLI_bitmap *visit_bitmap;
};
static void cage_mapped_verts_callback(
void *userData, int index, const float co[3],
const float UNUSED(no_f[3]), const short UNUSED(no_s[3]))
{
struct CageUserData *data = userData;
if ((index >= 0 && index < data->totvert) && (!BLI_BITMAP_TEST(data->visit_bitmap, index))) {
BLI_BITMAP_ENABLE(data->visit_bitmap, index);
copy_v3_v3(data->cos_cage[index], co);
}
}
float (*BKE_editmesh_vertexCos_get(struct Depsgraph *depsgraph, BMEditMesh *em, Scene *scene, int *r_numVerts))[3]
{
DerivedMesh *cage, *final;
BLI_bitmap *visit_bitmap;
struct CageUserData data;
float (*cos_cage)[3];
cage = editbmesh_get_derived_cage_and_final(depsgraph, scene, em->ob, em, CD_MASK_BAREMESH, &final);
cos_cage = MEM_callocN(sizeof(*cos_cage) * em->bm->totvert, "bmbvh cos_cage");
/* when initializing cage verts, we only want the first cage coordinate for each vertex,
* so that e.g. mirror or array use original vertex coordinates and not mirrored or duplicate */
visit_bitmap = BLI_BITMAP_NEW(em->bm->totvert, __func__);
data.totvert = em->bm->totvert;
data.cos_cage = cos_cage;
data.visit_bitmap = visit_bitmap;
cage->foreachMappedVert(cage, cage_mapped_verts_callback, &data, DM_FOREACH_NOP);
MEM_freeN(visit_bitmap);
if (r_numVerts) {
*r_numVerts = em->bm->totvert;
}
return cos_cage;
}
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