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test2/source/blender/blenkernel/intern/cdderivedmesh.c
Brecht Van Lommel 7da56f4a9b Particles 
=========

Merge of the famous particle patch by Janne Karhu, a full rewrite
of the Blender particle system. This includes:

- Emitter, Hair and Reactor particle types.
- Newtonian, Keyed and Boids physics.
- Various particle visualisation and rendering types.
- Vertex group and texture control for various properties.
- Interpolated child particles from parents.
- Hair editing with combing, growing, cutting, .. .
- Explode modifier.
- Harmonic, Magnetic fields, and multiple falloff types.

.. and lots of other things, some more info is here:

http://wiki.blender.org/index.php/BlenderDev/Particles_Rewrite
http://wiki.blender.org/index.php/BlenderDev/Particles_Rewrite_Doc

The new particle system cannot be backwards compatible. Old particle
systems are being converted to the new system, but will require
tweaking to get them looking the same as before.

Point Cache
===========

The new system to replace manual baking, based on automatic caching
on disk. This is currently used by softbodies and the particle system.

See the Cache API section on:
http://wiki.blender.org/index.php/BlenderDev/PhysicsSprint

Documentation
=============

These new features still need good docs for the release logs, help
for this is appreciated.
2007-11-26 22:09:57 +00:00

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/*
* $Id$
*
* ***** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2006 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Ben Batt <benbatt@gmail.com>
*
* ***** END GPL LICENSE BLOCK *****
*
* Implementation of CDDerivedMesh.
*
* BKE_cdderivedmesh.h contains the function prototypes for this file.
*
*/
/* TODO maybe BIF_gl.h should include string.h? */
#include <string.h>
#include "BIF_gl.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_customdata.h"
#include "BKE_DerivedMesh.h"
#include "BKE_displist.h"
#include "BKE_global.h"
#include "BKE_mesh.h"
#include "BKE_utildefines.h"
#include "BLI_arithb.h"
#include "BLI_blenlib.h"
#include "BLI_edgehash.h"
#include "BLI_editVert.h"
#include "BLI_ghash.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "MEM_guardedalloc.h"
#include <string.h>
#include <limits.h>
typedef struct {
DerivedMesh dm;
/* these point to data in the DerivedMesh custom data layers,
they are only here for efficiency and convenience **/
MVert *mvert;
MEdge *medge;
MFace *mface;
} CDDerivedMesh;
/**************** DerivedMesh interface functions ****************/
static int cdDM_getNumVerts(DerivedMesh *dm)
{
return dm->numVertData;
}
static int cdDM_getNumEdges(DerivedMesh *dm)
{
return dm->numEdgeData;
}
static int cdDM_getNumFaces(DerivedMesh *dm)
{
return dm->numFaceData;
}
static void cdDM_getVert(DerivedMesh *dm, int index, MVert *vert_r)
{
CDDerivedMesh *cddm = (CDDerivedMesh *)dm;
*vert_r = cddm->mvert[index];
}
static void cdDM_getEdge(DerivedMesh *dm, int index, MEdge *edge_r)
{
CDDerivedMesh *cddm = (CDDerivedMesh *)dm;
*edge_r = cddm->medge[index];
}
static void cdDM_getFace(DerivedMesh *dm, int index, MFace *face_r)
{
CDDerivedMesh *cddm = (CDDerivedMesh *)dm;
*face_r = cddm->mface[index];
}
static void cdDM_copyVertArray(DerivedMesh *dm, MVert *vert_r)
{
CDDerivedMesh *cddm = (CDDerivedMesh *)dm;
memcpy(vert_r, cddm->mvert, sizeof(*vert_r) * dm->numVertData);
}
static void cdDM_copyEdgeArray(DerivedMesh *dm, MEdge *edge_r)
{
CDDerivedMesh *cddm = (CDDerivedMesh *)dm;
memcpy(edge_r, cddm->medge, sizeof(*edge_r) * dm->numEdgeData);
}
void cdDM_copyFaceArray(DerivedMesh *dm, MFace *face_r)
{
CDDerivedMesh *cddm = (CDDerivedMesh *)dm;
memcpy(face_r, cddm->mface, sizeof(*face_r) * dm->numFaceData);
}
static void cdDM_getMinMax(DerivedMesh *dm, float min_r[3], float max_r[3])
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
int i;
if (dm->numVertData) {
for (i=0; i<dm->numVertData; i++) {
DO_MINMAX(cddm->mvert[i].co, min_r, max_r);
}
} else {
min_r[0] = min_r[1] = min_r[2] = max_r[0] = max_r[1] = max_r[2] = 0.0;
}
}
static void cdDM_getVertCo(DerivedMesh *dm, int index, float co_r[3])
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
VECCOPY(co_r, cddm->mvert[index].co);
}
static void cdDM_getVertCos(DerivedMesh *dm, float (*cos_r)[3])
{
MVert *mv = CDDM_get_verts(dm);
int i;
for(i = 0; i < dm->numVertData; i++, mv++)
VECCOPY(cos_r[i], mv->co);
}
static void cdDM_getVertNo(DerivedMesh *dm, int index, float no_r[3])
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
short *no = cddm->mvert[index].no;
no_r[0] = no[0]/32767.f;
no_r[1] = no[1]/32767.f;
no_r[2] = no[2]/32767.f;
}
static void cdDM_drawVerts(DerivedMesh *dm)
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
MVert *mv = cddm->mvert;
int i;
glBegin(GL_POINTS);
for(i = 0; i < dm->numVertData; i++, mv++)
glVertex3fv(mv->co);
glEnd();
}
static void cdDM_drawUVEdges(DerivedMesh *dm)
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
MFace *mf = cddm->mface;
MTFace *tf = DM_get_face_data_layer(dm, CD_MTFACE);
int i;
if(mf) {
glBegin(GL_LINES);
for(i = 0; i < dm->numFaceData; i++, mf++, tf++) {
if(!(mf->flag&ME_HIDE)) {
glVertex2fv(tf->uv[0]);
glVertex2fv(tf->uv[1]);
glVertex2fv(tf->uv[1]);
glVertex2fv(tf->uv[2]);
if(!mf->v4) {
glVertex2fv(tf->uv[2]);
glVertex2fv(tf->uv[0]);
} else {
glVertex2fv(tf->uv[2]);
glVertex2fv(tf->uv[3]);
glVertex2fv(tf->uv[3]);
glVertex2fv(tf->uv[0]);
}
}
}
glEnd();
}
}
static void cdDM_drawEdges(DerivedMesh *dm, int drawLooseEdges)
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
MVert *mvert = cddm->mvert;
MEdge *medge = cddm->medge;
int i;
glBegin(GL_LINES);
for(i = 0; i < dm->numEdgeData; i++, medge++) {
if((medge->flag&ME_EDGEDRAW)
&& (drawLooseEdges || !(medge->flag&ME_LOOSEEDGE))) {
glVertex3fv(mvert[medge->v1].co);
glVertex3fv(mvert[medge->v2].co);
}
}
glEnd();
}
static void cdDM_drawLooseEdges(DerivedMesh *dm)
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
MVert *mvert = cddm->mvert;
MEdge *medge = cddm->medge;
int i;
glBegin(GL_LINES);
for(i = 0; i < dm->numEdgeData; i++, medge++) {
if(medge->flag&ME_LOOSEEDGE) {
glVertex3fv(mvert[medge->v1].co);
glVertex3fv(mvert[medge->v2].co);
}
}
glEnd();
}
static void cdDM_drawFacesSolid(DerivedMesh *dm, int (*setMaterial)(int))
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
MVert *mvert = cddm->mvert;
MFace *mface = cddm->mface;
float *nors= dm->getFaceDataArray(dm, CD_NORMAL);
int a, glmode = -1, shademodel = -1, matnr = -1, drawCurrentMat = 1;
#define PASSVERT(index) { \
if(shademodel == GL_SMOOTH) { \
short *no = mvert[index].no; \
glNormal3sv(no); \
} \
glVertex3fv(mvert[index].co); \
}
glBegin(glmode = GL_QUADS);
for(a = 0; a < dm->numFaceData; a++, mface++) {
int new_glmode, new_matnr, new_shademodel;
new_glmode = mface->v4?GL_QUADS:GL_TRIANGLES;
new_matnr = mface->mat_nr + 1;
new_shademodel = (mface->flag & ME_SMOOTH)?GL_SMOOTH:GL_FLAT;
if(new_glmode != glmode || new_matnr != matnr
|| new_shademodel != shademodel) {
glEnd();
drawCurrentMat = setMaterial(matnr = new_matnr);
glShadeModel(shademodel = new_shademodel);
glBegin(glmode = new_glmode);
}
if(drawCurrentMat) {
if(shademodel == GL_FLAT) {
if (nors) {
glNormal3fv(nors);
}
else {
/* TODO make this better (cache facenormals as layer?) */
float nor[3];
if(mface->v4) {
CalcNormFloat4(mvert[mface->v1].co, mvert[mface->v2].co,
mvert[mface->v3].co, mvert[mface->v4].co,
nor);
} else {
CalcNormFloat(mvert[mface->v1].co, mvert[mface->v2].co,
mvert[mface->v3].co, nor);
}
glNormal3fv(nor);
}
}
PASSVERT(mface->v1);
PASSVERT(mface->v2);
PASSVERT(mface->v3);
if(mface->v4) {
PASSVERT(mface->v4);
}
}
if(nors) nors += 3;
}
glEnd();
glShadeModel(GL_FLAT);
#undef PASSVERT
}
static void cdDM_drawFacesColored(DerivedMesh *dm, int useTwoSided, unsigned char *col1, unsigned char *col2)
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
int a, glmode;
unsigned char *cp1, *cp2;
MVert *mvert = cddm->mvert;
MFace *mface = cddm->mface;
cp1 = col1;
if(col2) {
cp2 = col2;
} else {
cp2 = NULL;
useTwoSided = 0;
}
/* there's a conflict here... twosided colors versus culling...? */
/* defined by history, only texture faces have culling option */
/* we need that as mesh option builtin, next to double sided lighting */
if(col1 && col2)
glEnable(GL_CULL_FACE);
glShadeModel(GL_SMOOTH);
glBegin(glmode = GL_QUADS);
for(a = 0; a < dm->numFaceData; a++, mface++, cp1 += 16) {
int new_glmode = mface->v4?GL_QUADS:GL_TRIANGLES;
if(new_glmode != glmode) {
glEnd();
glBegin(glmode = new_glmode);
}
glColor3ub(cp1[0], cp1[1], cp1[2]);
glVertex3fv(mvert[mface->v1].co);
glColor3ub(cp1[4], cp1[5], cp1[6]);
glVertex3fv(mvert[mface->v2].co);
glColor3ub(cp1[8], cp1[9], cp1[10]);
glVertex3fv(mvert[mface->v3].co);
if(mface->v4) {
glColor3ub(cp1[12], cp1[13], cp1[14]);
glVertex3fv(mvert[mface->v4].co);
}
if(useTwoSided) {
glColor3ub(cp2[8], cp2[9], cp2[10]);
glVertex3fv(mvert[mface->v3].co );
glColor3ub(cp2[4], cp2[5], cp2[6]);
glVertex3fv(mvert[mface->v2].co );
glColor3ub(cp2[0], cp2[1], cp2[2]);
glVertex3fv(mvert[mface->v1].co );
if(mface->v4) {
glColor3ub(cp2[12], cp2[13], cp2[14]);
glVertex3fv(mvert[mface->v4].co );
}
}
if(col2) cp2 += 16;
}
glEnd();
glShadeModel(GL_FLAT);
glDisable(GL_CULL_FACE);
}
static void cdDM_drawFacesTex_common(DerivedMesh *dm,
int (*drawParams)(MTFace *tface, MCol *mcol, int matnr),
int (*drawParamsMapped)(void *userData, int index),
void *userData)
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
MVert *mv = cddm->mvert;
MFace *mf = cddm->mface;
MCol *mcol = dm->getFaceDataArray(dm, CD_MCOL);
float *nors= dm->getFaceDataArray(dm, CD_NORMAL);
MTFace *tf = DM_get_face_data_layer(dm, CD_MTFACE);
int i, orig, *index = DM_get_face_data_layer(dm, CD_ORIGINDEX);
for(i = 0; i < dm->numFaceData; i++, mf++) {
MVert *mvert;
int flag;
unsigned char *cp = NULL;
if(drawParams) {
flag = drawParams(tf? &tf[i]: NULL, mcol? &mcol[i*4]: NULL, mf->mat_nr);
}
else {
if(index) {
orig = *index++;
if(orig == ORIGINDEX_NONE) { if(nors) nors += 3; continue; }
if(drawParamsMapped) flag = drawParamsMapped(userData, orig);
else { if(nors) nors += 3; continue; }
}
else
if(drawParamsMapped) flag = drawParamsMapped(userData, i);
else { if(nors) nors += 3; continue; }
}
if(flag != 0) { /* if the flag is 0 it means the face is hidden or invisible */
if (flag==1 && mcol)
cp= (unsigned char*) &mcol[i*4];
if(!(mf->flag&ME_SMOOTH)) {
if (nors) {
glNormal3fv(nors);
}
else {
/* TODO make this better (cache facenormals as layer?) */
float nor[3];
if(mf->v4) {
CalcNormFloat4(mv[mf->v1].co, mv[mf->v2].co,
mv[mf->v3].co, mv[mf->v4].co,
nor);
} else {
CalcNormFloat(mv[mf->v1].co, mv[mf->v2].co,
mv[mf->v3].co, nor);
}
glNormal3fv(nor);
}
}
glBegin(mf->v4?GL_QUADS:GL_TRIANGLES);
if(tf) glTexCoord2fv(tf[i].uv[0]);
if(cp) glColor3ub(cp[3], cp[2], cp[1]);
mvert = &mv[mf->v1];
if(mf->flag&ME_SMOOTH) glNormal3sv(mvert->no);
glVertex3fv(mvert->co);
if(tf) glTexCoord2fv(tf[i].uv[1]);
if(cp) glColor3ub(cp[7], cp[6], cp[5]);
mvert = &mv[mf->v2];
if(mf->flag&ME_SMOOTH) glNormal3sv(mvert->no);
glVertex3fv(mvert->co);
if(tf) glTexCoord2fv(tf[i].uv[2]);
if(cp) glColor3ub(cp[11], cp[10], cp[9]);
mvert = &mv[mf->v3];
if(mf->flag&ME_SMOOTH) glNormal3sv(mvert->no);
glVertex3fv(mvert->co);
if(mf->v4) {
if(tf) glTexCoord2fv(tf[i].uv[3]);
if(cp) glColor3ub(cp[15], cp[14], cp[13]);
mvert = &mv[mf->v4];
if(mf->flag&ME_SMOOTH) glNormal3sv(mvert->no);
glVertex3fv(mvert->co);
}
glEnd();
}
if(nors) nors += 3;
}
}
static void cdDM_drawFacesTex(DerivedMesh *dm, int (*setDrawOptions)(MTFace *tface, MCol *mcol, int matnr))
{
cdDM_drawFacesTex_common(dm, setDrawOptions, NULL, NULL);
}
static void cdDM_drawMappedFaces(DerivedMesh *dm, int (*setDrawOptions)(void *userData, int index, int *drawSmooth_r), void *userData, int useColors)
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
MVert *mv = cddm->mvert;
MFace *mf = cddm->mface;
MCol *mc = DM_get_face_data_layer(dm, CD_MCOL);
float *nors= dm->getFaceDataArray(dm, CD_NORMAL);
int i, orig, *index = DM_get_face_data_layer(dm, CD_ORIGINDEX);
for(i = 0; i < dm->numFaceData; i++, mf++) {
int drawSmooth = (mf->flag & ME_SMOOTH);
if(index) {
orig = *index++;
if(setDrawOptions && orig == ORIGINDEX_NONE)
{ if(nors) nors += 3; continue; }
}
else
orig = i;
if(!setDrawOptions || setDrawOptions(userData, orig, &drawSmooth)) {
unsigned char *cp = NULL;
if(useColors && mc)
cp = (unsigned char *)&mc[i * 4];
glShadeModel(drawSmooth?GL_SMOOTH:GL_FLAT);
glBegin(mf->v4?GL_QUADS:GL_TRIANGLES);
if (!drawSmooth) {
if (nors) {
glNormal3fv(nors);
}
else {
/* TODO make this better (cache facenormals as layer?) */
float nor[3];
if(mf->v4) {
CalcNormFloat4(mv[mf->v1].co, mv[mf->v2].co,
mv[mf->v3].co, mv[mf->v4].co,
nor);
} else {
CalcNormFloat(mv[mf->v1].co, mv[mf->v2].co,
mv[mf->v3].co, nor);
}
glNormal3fv(nor);
}
if(cp) glColor3ub(cp[3], cp[2], cp[1]);
glVertex3fv(mv[mf->v1].co);
if(cp) glColor3ub(cp[7], cp[6], cp[5]);
glVertex3fv(mv[mf->v2].co);
if(cp) glColor3ub(cp[11], cp[10], cp[9]);
glVertex3fv(mv[mf->v3].co);
if(mf->v4) {
if(cp) glColor3ub(cp[15], cp[14], cp[13]);
glVertex3fv(mv[mf->v4].co);
}
} else {
if(cp) glColor3ub(cp[3], cp[2], cp[1]);
glNormal3sv(mv[mf->v1].no);
glVertex3fv(mv[mf->v1].co);
if(cp) glColor3ub(cp[7], cp[6], cp[5]);
glNormal3sv(mv[mf->v2].no);
glVertex3fv(mv[mf->v2].co);
if(cp) glColor3ub(cp[11], cp[10], cp[9]);
glNormal3sv(mv[mf->v3].no);
glVertex3fv(mv[mf->v3].co);
if(mf->v4) {
if(cp) glColor3ub(cp[15], cp[14], cp[13]);
glNormal3sv(mv[mf->v4].no);
glVertex3fv(mv[mf->v4].co);
}
}
glEnd();
}
if (nors) nors += 3;
}
}
static void cdDM_drawMappedFacesTex(DerivedMesh *dm, int (*setDrawOptions)(void *userData, int index), void *userData)
{
cdDM_drawFacesTex_common(dm, NULL, setDrawOptions, userData);
}
static void cdDM_drawMappedEdges(DerivedMesh *dm, int (*setDrawOptions)(void *userData, int index), void *userData)
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
MVert *vert = cddm->mvert;
MEdge *edge = cddm->medge;
int i, orig, *index = DM_get_edge_data_layer(dm, CD_ORIGINDEX);
glBegin(GL_LINES);
for(i = 0; i < dm->numEdgeData; i++, edge++) {
if(index) {
orig = *index++;
if(setDrawOptions && orig == ORIGINDEX_NONE) continue;
}
else
orig = i;
if(!setDrawOptions || setDrawOptions(userData, orig)) {
glVertex3fv(vert[edge->v1].co);
glVertex3fv(vert[edge->v2].co);
}
}
glEnd();
}
static void cdDM_foreachMappedVert(
DerivedMesh *dm,
void (*func)(void *userData, int index, float *co,
float *no_f, short *no_s),
void *userData)
{
MVert *mv = CDDM_get_verts(dm);
int i, orig, *index = DM_get_vert_data_layer(dm, CD_ORIGINDEX);
for(i = 0; i < dm->numVertData; i++, mv++) {
if(index) {
orig = *index++;
if(orig == ORIGINDEX_NONE) continue;
func(userData, orig, mv->co, NULL, mv->no);
}
else
func(userData, i, mv->co, NULL, mv->no);
}
}
static void cdDM_foreachMappedEdge(
DerivedMesh *dm,
void (*func)(void *userData, int index,
float *v0co, float *v1co),
void *userData)
{
CDDerivedMesh *cddm = (CDDerivedMesh*) dm;
MVert *mv = cddm->mvert;
MEdge *med = cddm->medge;
int i, orig, *index = DM_get_edge_data_layer(dm, CD_ORIGINDEX);
for(i = 0; i < dm->numEdgeData; i++, med++) {
if (index) {
orig = *index++;
if(orig == ORIGINDEX_NONE) continue;
func(userData, orig, mv[med->v1].co, mv[med->v2].co);
}
else
func(userData, i, mv[med->v1].co, mv[med->v2].co);
}
}
static void cdDM_foreachMappedFaceCenter(
DerivedMesh *dm,
void (*func)(void *userData, int index,
float *cent, float *no),
void *userData)
{
CDDerivedMesh *cddm = (CDDerivedMesh*)dm;
MVert *mv = cddm->mvert;
MFace *mf = cddm->mface;
int i, orig, *index = DM_get_face_data_layer(dm, CD_ORIGINDEX);
for(i = 0; i < dm->numFaceData; i++, mf++) {
float cent[3];
float no[3];
if (index) {
orig = *index++;
if(orig == ORIGINDEX_NONE) continue;
}
else
orig = i;
VECCOPY(cent, mv[mf->v1].co);
VecAddf(cent, cent, mv[mf->v2].co);
VecAddf(cent, cent, mv[mf->v3].co);
if (mf->v4) {
CalcNormFloat4(mv[mf->v1].co, mv[mf->v2].co,
mv[mf->v3].co, mv[mf->v4].co, no);
VecAddf(cent, cent, mv[mf->v4].co);
VecMulf(cent, 0.25f);
} else {
CalcNormFloat(mv[mf->v1].co, mv[mf->v2].co,
mv[mf->v3].co, no);
VecMulf(cent, 0.33333333333f);
}
func(userData, orig, cent, no);
}
}
static void cdDM_release(DerivedMesh *dm)
{
CDDerivedMesh *cddm = (CDDerivedMesh*)dm;
if (DM_release(dm))
MEM_freeN(cddm);
}
/**************** CDDM interface functions ****************/
static CDDerivedMesh *cdDM_create(const char *desc)
{
CDDerivedMesh *cddm;
DerivedMesh *dm;
cddm = MEM_callocN(sizeof(*cddm), desc);
dm = &cddm->dm;
dm->getMinMax = cdDM_getMinMax;
dm->getNumVerts = cdDM_getNumVerts;
dm->getNumFaces = cdDM_getNumFaces;
dm->getNumEdges = cdDM_getNumEdges;
dm->getVert = cdDM_getVert;
dm->getEdge = cdDM_getEdge;
dm->getFace = cdDM_getFace;
dm->copyVertArray = cdDM_copyVertArray;
dm->copyEdgeArray = cdDM_copyEdgeArray;
dm->copyFaceArray = cdDM_copyFaceArray;
dm->getVertData = DM_get_vert_data;
dm->getEdgeData = DM_get_edge_data;
dm->getFaceData = DM_get_face_data;
dm->getVertDataArray = DM_get_vert_data_layer;
dm->getEdgeDataArray = DM_get_edge_data_layer;
dm->getFaceDataArray = DM_get_face_data_layer;
dm->getVertCos = cdDM_getVertCos;
dm->getVertCo = cdDM_getVertCo;
dm->getVertNo = cdDM_getVertNo;
dm->drawVerts = cdDM_drawVerts;
dm->drawUVEdges = cdDM_drawUVEdges;
dm->drawEdges = cdDM_drawEdges;
dm->drawLooseEdges = cdDM_drawLooseEdges;
dm->drawMappedEdges = cdDM_drawMappedEdges;
dm->drawFacesSolid = cdDM_drawFacesSolid;
dm->drawFacesColored = cdDM_drawFacesColored;
dm->drawFacesTex = cdDM_drawFacesTex;
dm->drawMappedFaces = cdDM_drawMappedFaces;
dm->drawMappedFacesTex = cdDM_drawMappedFacesTex;
dm->foreachMappedVert = cdDM_foreachMappedVert;
dm->foreachMappedEdge = cdDM_foreachMappedEdge;
dm->foreachMappedFaceCenter = cdDM_foreachMappedFaceCenter;
dm->release = cdDM_release;
return cddm;
}
DerivedMesh *CDDM_new(int numVerts, int numEdges, int numFaces)
{
CDDerivedMesh *cddm = cdDM_create("CDDM_new dm");
DerivedMesh *dm = &cddm->dm;
DM_init(dm, numVerts, numEdges, numFaces);
CustomData_add_layer(&dm->vertData, CD_MVERT, CD_CALLOC, NULL, numVerts);
CustomData_add_layer(&dm->edgeData, CD_MEDGE, CD_CALLOC, NULL, numEdges);
CustomData_add_layer(&dm->faceData, CD_MFACE, CD_CALLOC, NULL, numFaces);
cddm->mvert = CustomData_get_layer(&dm->vertData, CD_MVERT);
cddm->medge = CustomData_get_layer(&dm->edgeData, CD_MEDGE);
cddm->mface = CustomData_get_layer(&dm->faceData, CD_MFACE);
return dm;
}
DerivedMesh *CDDM_from_mesh(Mesh *mesh, Object *ob)
{
CDDerivedMesh *cddm = cdDM_create("CDDM_from_mesh dm");
DerivedMesh *dm = &cddm->dm;
int i, *index;
/* this does a referenced copy, the only new layers being ORIGINDEX */
DM_init(dm, mesh->totvert, mesh->totedge, mesh->totface);
dm->deformedOnly = 1;
CustomData_merge(&mesh->vdata, &dm->vertData, CD_MASK_MESH, CD_REFERENCE,
mesh->totvert);
CustomData_merge(&mesh->edata, &dm->edgeData, CD_MASK_MESH, CD_REFERENCE,
mesh->totedge);
CustomData_merge(&mesh->fdata, &dm->faceData, CD_MASK_MESH, CD_REFERENCE,
mesh->totface);
cddm->mvert = CustomData_get_layer(&dm->vertData, CD_MVERT);
cddm->medge = CustomData_get_layer(&dm->edgeData, CD_MEDGE);
cddm->mface = CustomData_get_layer(&dm->faceData, CD_MFACE);
index = CustomData_get_layer(&dm->vertData, CD_ORIGINDEX);
for(i = 0; i < mesh->totvert; ++i, ++index)
*index = i;
index = CustomData_get_layer(&dm->edgeData, CD_ORIGINDEX);
for(i = 0; i < mesh->totedge; ++i, ++index)
*index = i;
index = CustomData_get_layer(&dm->faceData, CD_ORIGINDEX);
for(i = 0; i < mesh->totface; ++i, ++index)
*index = i;
/* works in conjunction with hack during modifier calc, where active mcol
layer with weight paint colors is temporarily added */
if ((G.f & G_WEIGHTPAINT) &&
(ob && ob==(G.scene->basact?G.scene->basact->object:NULL)))
CustomData_duplicate_referenced_layer(&dm->faceData, CD_MCOL);
return dm;
}
DerivedMesh *CDDM_from_editmesh(EditMesh *em, Mesh *me)
{
DerivedMesh *dm = CDDM_new(BLI_countlist(&em->verts),
BLI_countlist(&em->edges),
BLI_countlist(&em->faces));
CDDerivedMesh *cddm = (CDDerivedMesh*)dm;
EditVert *eve;
EditEdge *eed;
EditFace *efa;
MVert *mvert = cddm->mvert;
MEdge *medge = cddm->medge;
MFace *mface = cddm->mface;
int i, *index;
dm->deformedOnly = 1;
CustomData_merge(&em->vdata, &dm->vertData, CD_MASK_DERIVEDMESH,
CD_CALLOC, dm->numVertData);
/* CustomData_merge(&em->edata, &dm->edgeData, CD_MASK_DERIVEDMESH,
CD_CALLOC, dm->numEdgeData); */
CustomData_merge(&em->fdata, &dm->faceData, CD_MASK_DERIVEDMESH,
CD_CALLOC, dm->numFaceData);
/* set eve->hash to vert index */
for(i = 0, eve = em->verts.first; eve; eve = eve->next, ++i)
eve->tmp.l = i;
/* Need to be able to mark loose edges */
for(eed = em->edges.first; eed; eed = eed->next) {
eed->f2 = 0;
}
for(efa = em->faces.first; efa; efa = efa->next) {
efa->e1->f2 = 1;
efa->e2->f2 = 1;
efa->e3->f2 = 1;
if(efa->e4) efa->e4->f2 = 1;
}
index = dm->getVertDataArray(dm, CD_ORIGINDEX);
for(i = 0, eve = em->verts.first; i < dm->numVertData;
i++, eve = eve->next, index++) {
MVert *mv = &mvert[i];
VECCOPY(mv->co, eve->co);
mv->no[0] = eve->no[0] * 32767.0;
mv->no[1] = eve->no[1] * 32767.0;
mv->no[2] = eve->no[2] * 32767.0;
mv->mat_nr = 0;
mv->flag = 0;
*index = i;
CustomData_from_em_block(&em->vdata, &dm->vertData, eve->data, i);
}
index = dm->getEdgeDataArray(dm, CD_ORIGINDEX);
for(i = 0, eed = em->edges.first; i < dm->numEdgeData;
i++, eed = eed->next, index++) {
MEdge *med = &medge[i];
med->v1 = eed->v1->tmp.l;
med->v2 = eed->v2->tmp.l;
med->crease = (unsigned char) (eed->crease * 255.0f);
med->flag = ME_EDGEDRAW|ME_EDGERENDER;
if(eed->seam) med->flag |= ME_SEAM;
if(eed->sharp) med->flag |= ME_SHARP;
if(!eed->f2) med->flag |= ME_LOOSEEDGE;
*index = i;
/* CustomData_from_em_block(&em->edata, &dm->edgeData, eed->data, i); */
}
index = dm->getFaceDataArray(dm, CD_ORIGINDEX);
for(i = 0, efa = em->faces.first; i < dm->numFaceData;
i++, efa = efa->next, index++) {
MFace *mf = &mface[i];
mf->v1 = efa->v1->tmp.l;
mf->v2 = efa->v2->tmp.l;
mf->v3 = efa->v3->tmp.l;
mf->v4 = efa->v4 ? efa->v4->tmp.l : 0;
mf->mat_nr = efa->mat_nr;
mf->flag = efa->flag;
*index = i;
CustomData_from_em_block(&em->fdata, &dm->faceData, efa->data, i);
test_index_face(mf, &dm->faceData, i, efa->v4?4:3);
}
return dm;
}
DerivedMesh *CDDM_copy(DerivedMesh *source)
{
CDDerivedMesh *cddm = cdDM_create("CDDM_copy cddm");
DerivedMesh *dm = &cddm->dm;
int numVerts = source->numVertData;
int numEdges = source->numEdgeData;
int numFaces = source->numFaceData;
/* this initializes dm, and copies all non mvert/medge/mface layers */
DM_from_template(dm, source, numVerts, numEdges, numFaces);
dm->deformedOnly = source->deformedOnly;
CustomData_copy_data(&source->vertData, &dm->vertData, 0, 0, numVerts);
CustomData_copy_data(&source->edgeData, &dm->edgeData, 0, 0, numEdges);
CustomData_copy_data(&source->faceData, &dm->faceData, 0, 0, numFaces);
/* now add mvert/medge/mface layers */
cddm->mvert = source->dupVertArray(source);
cddm->medge = source->dupEdgeArray(source);
cddm->mface = source->dupFaceArray(source);
CustomData_add_layer(&dm->vertData, CD_MVERT, CD_ASSIGN, cddm->mvert, numVerts);
CustomData_add_layer(&dm->edgeData, CD_MEDGE, CD_ASSIGN, cddm->medge, numEdges);
CustomData_add_layer(&dm->faceData, CD_MFACE, CD_ASSIGN, cddm->mface, numFaces);
return dm;
}
DerivedMesh *CDDM_from_template(DerivedMesh *source,
int numVerts, int numEdges, int numFaces)
{
CDDerivedMesh *cddm = cdDM_create("CDDM_from_template dest");
DerivedMesh *dm = &cddm->dm;
/* this does a copy of all non mvert/medge/mface layers */
DM_from_template(dm, source, numVerts, numEdges, numFaces);
/* now add mvert/medge/mface layers */
CustomData_add_layer(&dm->vertData, CD_MVERT, CD_CALLOC, NULL, numVerts);
CustomData_add_layer(&dm->edgeData, CD_MEDGE, CD_CALLOC, NULL, numEdges);
CustomData_add_layer(&dm->faceData, CD_MFACE, CD_CALLOC, NULL, numFaces);
cddm->mvert = CustomData_get_layer(&dm->vertData, CD_MVERT);
cddm->medge = CustomData_get_layer(&dm->edgeData, CD_MEDGE);
cddm->mface = CustomData_get_layer(&dm->faceData, CD_MFACE);
return dm;
}
void CDDM_apply_vert_coords(DerivedMesh *dm, float (*vertCoords)[3])
{
CDDerivedMesh *cddm = (CDDerivedMesh*)dm;
MVert *vert;
int i;
/* this will just return the pointer if it wasn't a referenced layer */
vert = CustomData_duplicate_referenced_layer(&dm->vertData, CD_MVERT);
cddm->mvert = vert;
for(i = 0; i < dm->numVertData; ++i, ++vert)
VECCOPY(vert->co, vertCoords[i]);
}
void CDDM_apply_vert_normals(DerivedMesh *dm, short (*vertNormals)[3])
{
CDDerivedMesh *cddm = (CDDerivedMesh*)dm;
MVert *vert;
int i;
/* this will just return the pointer if it wasn't a referenced layer */
vert = CustomData_duplicate_referenced_layer(&dm->vertData, CD_MVERT);
cddm->mvert = vert;
for(i = 0; i < dm->numVertData; ++i, ++vert)
VECCOPY(vert->no, vertNormals[i]);
}
/* adapted from mesh_calc_normals */
void CDDM_calc_normals(DerivedMesh *dm)
{
CDDerivedMesh *cddm = (CDDerivedMesh*)dm;
float (*temp_nors)[3];
float (*face_nors)[3];
int i;
int numVerts = dm->numVertData;
int numFaces = dm->numFaceData;
MFace *mf;
MVert *mv;
if(numVerts == 0) return;
temp_nors = MEM_callocN(numVerts * sizeof(*temp_nors),
"CDDM_calc_normals temp_nors");
/* we don't want to overwrite any referenced layers */
mv = CustomData_duplicate_referenced_layer(&dm->vertData, CD_MVERT);
cddm->mvert = mv;
/* make a face normal layer if not present */
face_nors = CustomData_get_layer(&dm->faceData, CD_NORMAL);
if(!face_nors)
face_nors = CustomData_add_layer(&dm->faceData, CD_NORMAL, CD_CALLOC,
NULL, dm->numFaceData);
/* calculate face normals and add to vertex normals */
mf = CDDM_get_faces(dm);
for(i = 0; i < numFaces; i++, mf++) {
float *f_no = face_nors[i];
if(mf->v4)
CalcNormFloat4(mv[mf->v1].co, mv[mf->v2].co,
mv[mf->v3].co, mv[mf->v4].co, f_no);
else
CalcNormFloat(mv[mf->v1].co, mv[mf->v2].co,
mv[mf->v3].co, f_no);
VecAddf(temp_nors[mf->v1], temp_nors[mf->v1], f_no);
VecAddf(temp_nors[mf->v2], temp_nors[mf->v2], f_no);
VecAddf(temp_nors[mf->v3], temp_nors[mf->v3], f_no);
if(mf->v4)
VecAddf(temp_nors[mf->v4], temp_nors[mf->v4], f_no);
}
/* normalize vertex normals and assign */
for(i = 0; i < numVerts; i++, mv++) {
float *no = temp_nors[i];
if (Normalize(no) == 0.0) {
VECCOPY(no, mv->co);
Normalize(no);
}
mv->no[0] = (short)(no[0] * 32767.0);
mv->no[1] = (short)(no[1] * 32767.0);
mv->no[2] = (short)(no[2] * 32767.0);
}
MEM_freeN(temp_nors);
}
void CDDM_calc_edges(DerivedMesh *dm)
{
CDDerivedMesh *cddm = (CDDerivedMesh*)dm;
CustomData edgeData;
EdgeHashIterator *ehi;
MFace *mf = cddm->mface;
MEdge *med;
EdgeHash *eh = BLI_edgehash_new();
int i, *index, numEdges, maxFaces = dm->numFaceData;
for (i = 0; i < maxFaces; i++, mf++) {
if (!BLI_edgehash_haskey(eh, mf->v1, mf->v2))
BLI_edgehash_insert(eh, mf->v1, mf->v2, NULL);
if (!BLI_edgehash_haskey(eh, mf->v2, mf->v3))
BLI_edgehash_insert(eh, mf->v2, mf->v3, NULL);
if (mf->v4) {
if (!BLI_edgehash_haskey(eh, mf->v3, mf->v4))
BLI_edgehash_insert(eh, mf->v3, mf->v4, NULL);
if (!BLI_edgehash_haskey(eh, mf->v4, mf->v1))
BLI_edgehash_insert(eh, mf->v4, mf->v1, NULL);
} else {
if (!BLI_edgehash_haskey(eh, mf->v3, mf->v1))
BLI_edgehash_insert(eh, mf->v3, mf->v1, NULL);
}
}
numEdges = BLI_edgehash_size(eh);
/* write new edges into a temporary CustomData */
memset(&edgeData, 0, sizeof(edgeData));
CustomData_add_layer(&edgeData, CD_MEDGE, CD_CALLOC, NULL, numEdges);
CustomData_add_layer(&edgeData, CD_ORIGINDEX, CD_CALLOC, NULL, numEdges);
ehi = BLI_edgehashIterator_new(eh);
med = CustomData_get_layer(&edgeData, CD_MEDGE);
index = CustomData_get_layer(&edgeData, CD_ORIGINDEX);
for(i = 0; !BLI_edgehashIterator_isDone(ehi);
BLI_edgehashIterator_step(ehi), ++i, ++med, ++index) {
BLI_edgehashIterator_getKey(ehi, (int*)&med->v1, (int*)&med->v2);
med->flag = ME_EDGEDRAW|ME_EDGERENDER;
*index = ORIGINDEX_NONE;
}
BLI_edgehashIterator_free(ehi);
/* free old CustomData and assign new one */
CustomData_free(&dm->edgeData, dm->numVertData);
dm->edgeData = edgeData;
dm->numEdgeData = numEdges;
cddm->medge = CustomData_get_layer(&dm->edgeData, CD_MEDGE);
BLI_edgehash_free(eh, NULL);
}
void CDDM_lower_num_verts(DerivedMesh *dm, int numVerts)
{
if (numVerts < dm->numVertData)
CustomData_free_elem(&dm->vertData, numVerts, dm->numVertData-numVerts);
dm->numVertData = numVerts;
}
void CDDM_lower_num_edges(DerivedMesh *dm, int numEdges)
{
if (numEdges < dm->numEdgeData)
CustomData_free_elem(&dm->edgeData, numEdges, dm->numEdgeData-numEdges);
dm->numEdgeData = numEdges;
}
void CDDM_lower_num_faces(DerivedMesh *dm, int numFaces)
{
if (numFaces < dm->numFaceData)
CustomData_free_elem(&dm->faceData, numFaces, dm->numFaceData-numFaces);
dm->numFaceData = numFaces;
}
MVert *CDDM_get_vert(DerivedMesh *dm, int index)
{
return &((CDDerivedMesh*)dm)->mvert[index];
}
MEdge *CDDM_get_edge(DerivedMesh *dm, int index)
{
return &((CDDerivedMesh*)dm)->medge[index];
}
MFace *CDDM_get_face(DerivedMesh *dm, int index)
{
return &((CDDerivedMesh*)dm)->mface[index];
}
MVert *CDDM_get_verts(DerivedMesh *dm)
{
return ((CDDerivedMesh*)dm)->mvert;
}
MEdge *CDDM_get_edges(DerivedMesh *dm)
{
return ((CDDerivedMesh*)dm)->medge;
}
MFace *CDDM_get_faces(DerivedMesh *dm)
{
return ((CDDerivedMesh*)dm)->mface;
}
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