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diff --git a/source/blender/src/multires-firstlevel.c b/source/blender/src/multires-firstlevel.c
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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 by Nicholas Bishop
- * All rights reserved.
- *
- * The Original Code is: all of this file.
- *
- * Contributor(s): none yet.
- *
- * ***** END GPL LICENSE BLOCK *****
- *
- * Deals with the first-level data in multires (edge flags, weights, and UVs)
- *
- * multires.h
- *
- */
-
-#include "DNA_customdata_types.h"
-#include "DNA_mesh_types.h"
-#include "DNA_meshdata_types.h"
-#include "DNA_object_types.h"
-#include "DNA_scene_types.h"
-
-#include "BIF_editmesh.h"
-
-#include "BKE_customdata.h"
-#include "BKE_global.h"
-#include "BKE_mesh.h"
-
-#include "BLI_editVert.h"
-
-#include "MEM_guardedalloc.h"
-
-#include "blendef.h"
-#include "multires.h"
-
-#include <string.h>
-
-MDeformVert *subdivide_dverts(MDeformVert *src, MultiresLevel *lvl);
-MTFace *subdivide_mtfaces(MTFace *src, MultiresLevel *lvl);
-void multires_update_edge_flags(Mesh *me, EditMesh *em);
-void eed_to_medge_flag(EditEdge *eed, short *flag, char *crease);
-
-/*********** Generic ***********/
-
-CustomDataMask cdmask(const int type)
-{
- if(type == CD_MDEFORMVERT)
- return CD_MASK_MDEFORMVERT;
- else if(type == CD_MTFACE)
- return CD_MASK_MTFACE;
- return -1;
-}
-
-char type_ok(const int type)
-{
- return (type == CD_MDEFORMVERT) || (type == CD_MTFACE);
-}
-
-/* Copy vdata or fdata from Mesh or EditMesh to Multires. */
-void multires_update_customdata(MultiresLevel *lvl1, CustomData *src, CustomData *dst, const int type)
-{
- if(src && dst && type_ok(type)) {
- const int tot= (type == CD_MDEFORMVERT ? lvl1->totvert : lvl1->totface);
- int i;
-
- CustomData_free(dst, tot);
-
- if(CustomData_has_layer(src, type)) {
- if(G.obedit) {
- EditVert *eve= G.editMesh->verts.first;
- EditFace *efa= G.editMesh->faces.first;
- CustomData_copy(src, dst, cdmask(type), CD_CALLOC, tot);
- for(i=0; i<tot; ++i) {
- if(type == CD_MDEFORMVERT) {
- CustomData_from_em_block(&G.editMesh->vdata, dst, eve->data, i);
- eve= eve->next;
- }
- else if(type == CD_MTFACE) {
- CustomData_from_em_block(&G.editMesh->fdata, dst, efa->data, i);
- efa= efa->next;
- }
- }
- }
- else
- CustomData_copy(src, dst, cdmask(type), CD_DUPLICATE, tot);
- }
- }
-}
-
-/* Uses subdivide_dverts or subdivide_mtfaces to subdivide src to match lvl_end. Does not free src. */
-void *subdivide_customdata_to_level(void *src, MultiresLevel *lvl_start,
- MultiresLevel *lvl_end, const int type)
-{
- if(src && lvl_start && lvl_end && type_ok(type)) {
- MultiresLevel *lvl;
- void *cr_data= NULL, *pr_data= NULL;
-
- pr_data= src;
- for(lvl= lvl_start; lvl && lvl != lvl_end; lvl= lvl->next) {
- if(type == CD_MDEFORMVERT)
- cr_data= subdivide_dverts(pr_data, lvl);
- else if(type == CD_MTFACE)
- cr_data= subdivide_mtfaces(pr_data, lvl);
-
- /* Free previous subdivision level's data */
- if(lvl != lvl_start) {
- if(type == CD_MDEFORMVERT)
- free_dverts(pr_data, lvl->totvert);
- else if(type == CD_MTFACE)
- MEM_freeN(pr_data);
- }
-
- pr_data= cr_data;
- cr_data= NULL;
- }
-
- return pr_data;
- }
-
- return NULL;
-}
-
-/* Directly copy src into dst (handles both Mesh and EditMesh) */
-void customdata_to_mesh(Mesh *me, EditMesh *em, CustomData *src, CustomData *dst, const int tot, const int type)
-{
- if(me && me->mr && src && dst && type_ok(type)) {
- if(em) {
- int i;
- EditVert *eve= em->verts.first;
- EditFace *efa= em->faces.first;
- CustomData_copy(src, dst, cdmask(type), CD_CALLOC, 0);
-
- for(i=0; i<tot; ++i) {
- if(type == CD_MDEFORMVERT) {
- CustomData_to_em_block(src, dst, i, &eve->data);
- eve= eve->next;
- }
- else if(type == CD_MTFACE) {
- CustomData_to_em_block(src, dst, i, &efa->data);
- efa= efa->next;
- }
- }
- } else {
- CustomData_merge(src, dst, cdmask(type), CD_DUPLICATE, tot);
- }
- }
-}
-
-/* Subdivide vdata or fdata from Multires into either Mesh or EditMesh. */
-void multires_customdata_to_mesh(Mesh *me, EditMesh *em, MultiresLevel *lvl, CustomData *src,
- CustomData *dst, const int type)
-{
- if(me && me->mr && lvl && src && dst && type_ok(type) &&
- CustomData_has_layer(src, type)) {
- const int tot= (type == CD_MDEFORMVERT ? lvl->totvert : lvl->totface);
- if(lvl == me->mr->levels.first) {
- customdata_to_mesh(me, em, src, dst, tot, type);
- }
- else {
- CustomData cdf;
- const int count = CustomData_number_of_layers(src, type);
- int i;
-
- /* Construct a new CustomData containing the subdivided data */
- CustomData_copy(src, &cdf, cdmask(type), CD_ASSIGN, tot);
- for(i=0; i<count; ++i) {
- void *layer= CustomData_get_layer_n(&cdf, type, i);
- CustomData_set_layer_n(&cdf, type, i,
- subdivide_customdata_to_level(layer, me->mr->levels.first, lvl, type));
- }
-
- customdata_to_mesh(me, em, &cdf, dst, tot, type);
- CustomData_free(&cdf, tot);
- }
- }
-}
-
-/* Subdivide the first-level customdata up to cr_lvl, then delete the original data */
-void multires_del_lower_customdata(Multires *mr, MultiresLevel *cr_lvl)
-{
- MultiresLevel *lvl1= mr->levels.first;
- MDeformVert *dverts= NULL;
- CustomData cdf;
- int i;
-
- /* dverts */
- dverts= subdivide_customdata_to_level(CustomData_get(&mr->vdata, 0, CD_MDEFORMVERT),
- lvl1, cr_lvl, CD_MDEFORMVERT);
- if(dverts) {
- CustomData_free_layers(&mr->vdata, CD_MDEFORMVERT, lvl1->totvert);
- CustomData_add_layer(&mr->vdata, CD_MDEFORMVERT, CD_ASSIGN, dverts, cr_lvl->totvert);
- }
-
- /* mtfaces */
- CustomData_copy(&mr->fdata, &cdf, CD_MASK_MTFACE, CD_ASSIGN, cr_lvl->totface);
- for(i=0; i<CustomData_number_of_layers(&mr->fdata, CD_MTFACE); ++i) {
- MTFace *mtfaces=
- subdivide_customdata_to_level(CustomData_get_layer_n(&mr->fdata, CD_MTFACE, i),
- lvl1, cr_lvl, CD_MTFACE);
- if(mtfaces)
- CustomData_set_layer_n(&cdf, CD_MTFACE, i, mtfaces);
- }
-
- CustomData_free(&mr->fdata, lvl1->totface);
- mr->fdata= cdf;
-}
-
-/* Update all special first-level data, if the first-level is active */
-void multires_update_first_level(Mesh *me, EditMesh *em)
-{
- if(me && me->mr && me->mr->current == 1) {
- multires_update_customdata(me->mr->levels.first, em ? &em->vdata : &me->vdata,
- &me->mr->vdata, CD_MDEFORMVERT);
- multires_update_customdata(me->mr->levels.first, em ? &em->fdata : &me->fdata,
- &me->mr->fdata, CD_MTFACE);
- multires_update_edge_flags(me, em);
- }
-}
-
-/*********** Multires.edge_flags ***********/
-void multires_update_edge_flags(Mesh *me, EditMesh *em)
-{
- MultiresLevel *lvl= me->mr->levels.first;
- EditEdge *eed= NULL;
- int i;
-
- if(em) eed= em->edges.first;
- for(i=0; i<lvl->totedge; ++i) {
- if(em) {
- me->mr->edge_flags[i]= 0;
- eed_to_medge_flag(eed, &me->mr->edge_flags[i], &me->mr->edge_creases[i]);
- eed= eed->next;
- }
- else {
- me->mr->edge_flags[i]= me->medge[i].flag;
- me->mr->edge_creases[i]= me->medge[i].crease;
- }
- }
-}
-
-
-
-/*********** Multires.vdata ***********/
-
-/* MDeformVert */
-
-/* Add each weight from in to out. Scale each weight by w. */
-void multires_add_dvert(MDeformVert *out, const MDeformVert *in, const float w)
-{
- if(out && in) {
- int i, j;
- char found;
-
- for(i=0; i<in->totweight; ++i) {
- found= 0;
- for(j=0; j<out->totweight; ++j) {
- if(out->dw[j].def_nr==in->dw[i].def_nr) {
- out->dw[j].weight += in->dw[i].weight * w;
- found= 1;
- }
- }
- if(!found) {
- MDeformWeight *newdw= MEM_callocN(sizeof(MDeformWeight)*(out->totweight+1),
- "multires dvert");
- if(out->dw) {
- memcpy(newdw, out->dw, sizeof(MDeformWeight)*out->totweight);
- MEM_freeN(out->dw);
- }
-
- out->dw= newdw;
- out->dw[out->totweight].weight= in->dw[i].weight * w;
- out->dw[out->totweight].def_nr= in->dw[i].def_nr;
-
- ++out->totweight;
- }
- }
- }
-}
-
-/* Takes an input array of dverts and subdivides them (linear) using the topology of lvl */
-MDeformVert *subdivide_dverts(MDeformVert *src, MultiresLevel *lvl)
-{
- if(lvl && lvl->next) {
- MDeformVert *out = MEM_callocN(sizeof(MDeformVert)*lvl->next->totvert, "dvert prop array");
- int i, j;
-
- /* Copy lower level */
- for(i=0; i<lvl->totvert; ++i)
- multires_add_dvert(&out[i], &src[i], 1);
- /* Edge verts */
- for(i=0; i<lvl->totedge; ++i) {
- for(j=0; j<2; ++j)
- multires_add_dvert(&out[lvl->totvert+i], &src[lvl->edges[i].v[j]],0.5);
- }
-
- /* Face verts */
- for(i=0; i<lvl->totface; ++i) {
- for(j=0; j<(lvl->faces[i].v[3]?4:3); ++j)
- multires_add_dvert(&out[lvl->totvert + lvl->totedge + i],
- &src[lvl->faces[i].v[j]],
- lvl->faces[i].v[3]?0.25:(1.0f/3.0f));
- }
-
- return out;
- }
-
- return NULL;
-}
-
-
-
-/*********** Multires.fdata ***********/
-
-/* MTFace */
-
-void multires_uv_avg2(float out[2], const float a[2], const float b[2])
-{
- int i;
- for(i=0; i<2; ++i)
- out[i] = (a[i] + b[i]) / 2.0f;
-}
-
-/* Takes an input array of mtfaces and subdivides them (linear) using the topology of lvl */
-MTFace *subdivide_mtfaces(MTFace *src, MultiresLevel *lvl)
-{
- if(lvl && lvl->next) {
- MTFace *out= MEM_callocN(sizeof(MultiresColFace)*lvl->next->totface,"Multirescolfaces");
- int i, j, curf;
-
- for(i=0, curf=0; i<lvl->totface; ++i) {
- const char sides= lvl->faces[i].v[3]?4:3;
- float cntr[2]= {0, 0};
-
- /* Find average uv coord of the current face */
- for(j=0; j<sides; ++j) {
- cntr[0]+= src[i].uv[j][0];
- cntr[1]+= src[i].uv[j][1];
- }
- cntr[0]/= sides;
- cntr[1]/= sides;
-
- for(j=0; j<sides; ++j, ++curf) {
- out[curf]= src[i];
-
- multires_uv_avg2(out[curf].uv[0], src[i].uv[j], src[i].uv[j==0?sides-1:j-1]);
-
- out[curf].uv[1][0]= src[i].uv[j][0];
- out[curf].uv[1][1]= src[i].uv[j][1];
-
- multires_uv_avg2(out[curf].uv[2], src[i].uv[j], src[i].uv[j==sides-1?0:j+1]);
-
- out[curf].uv[3][0]= cntr[0];
- out[curf].uv[3][1]= cntr[1];
- }
- }
-
- return out;
- }
-
- return NULL;
-}
-
-void multires_delete_layer(Mesh *me, CustomData *cd, const int type, int n)
-{
- if(me && me->mr && cd) {
- MultiresLevel *lvl1= me->mr->levels.first;
-
- multires_update_levels(me, 0);
-
- CustomData_set_layer_active(cd, type, n);
- CustomData_free_layer_active(cd, type, lvl1->totface);
-
- multires_level_to_mesh(OBACT, me, 0);
- }
-}
-
-MultiresLevel *current_level(Multires *mr);
-void multires_add_layer(Mesh *me, CustomData *cd, const int type, const int n)
-{
- if(me && me->mr && cd) {
- multires_update_levels(me, 0);
-
- if(CustomData_has_layer(cd, type))
- CustomData_add_layer(cd, type, CD_DUPLICATE, CustomData_get_layer(cd, type),
- current_level(me->mr)->totface);
- else
- CustomData_add_layer(cd, type, CD_DEFAULT, NULL, current_level(me->mr)->totface);
-
- CustomData_set_layer_active(cd, type, n);
- multires_level_to_mesh(OBACT, me, 0);
- }
-}
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