diff options
Diffstat (limited to 'source/blender/blenkernel/intern/BME_Customdata.c')
| -rw-r--r-- | source/blender/blenkernel/intern/BME_Customdata.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/BME_Customdata.c b/source/blender/blenkernel/intern/BME_Customdata.c new file mode 100644 index 00000000000..1fc8a4071dc --- /dev/null +++ b/source/blender/blenkernel/intern/BME_Customdata.c @@ -0,0 +1,199 @@ +/** + * BME_customdata.c jan 2007 + * + * Custom Data functions for Bmesh + * + * $Id: BKE_bmesh.h,v 1.00 2007/01/17 17:42:01 Briggs Exp $ + * + * ***** 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. The Blender + * Foundation also sells licenses for use in proprietary software under + * the Blender License. See http://www.blender.org/BL/ for information + * about this. + * + * 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) 2004 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): Geoffrey Bantle, Brecht Van Lommel, Ben Batt + * + * ***** END GPL LICENSE BLOCK ***** + */ + + +#include "BKE_bmesh.h" +#include "BKE_bmeshCustomData.h" +#include "bmesh_private.h" +#include <string.h> +#include "MEM_guardedalloc.h" +#include "BLI_mempool.h" + +/********************* Layer type information **********************/ +typedef struct BME_LayerTypeInfo { + int size; + char *defaultname; + void (*copy)(const void *source, void *dest, int count); + void (*free)(void *data, int count, int size); + void (*interp)(void **sources, float *weights, float *sub_weights, int count, void *dest); + void (*set_default)(void *data, int count); +} BME_LayerTypeInfo; +const BME_LayerTypeInfo BMELAYERTYPEINFO[BME_CD_NUMTYPES] = { + {sizeof(BME_facetex), "TexFace", NULL, NULL, NULL, NULL}, + {sizeof(BME_looptex), "UV", NULL, NULL, NULL, NULL}, + {sizeof(BME_loopcol), "VCol", NULL, NULL, NULL, NULL}, + {sizeof(BME_DeformVert), "Group", NULL, NULL, NULL, NULL} +}; +static const BME_LayerTypeInfo *BME_layerType_getInfo(int type) +{ + if(type < 0 || type >= CD_NUMTYPES) return NULL; + + return &BMELAYERTYPEINFO[type]; +} +void BME_CD_Create(BME_CustomData *data, BME_CustomDataInit *init, int initalloc) +{ + int i, j, offset=0; + const BME_LayerTypeInfo *info; + + /*initialize data members*/ + data->layers = NULL; + data->pool = NULL; + data->totlayer = 0; + data->totsize = 0; + + /*first count how many layers to alloc*/ + for(i=0; i < BME_CD_NUMTYPES; i++){ + info = BME_layerType_getInfo(i); + data->totlayer += init->layout[i]; + data->totsize += (init->layout[i] * info->size); + } + /*alloc our layers*/ + if(data->totlayer){ + /*alloc memory*/ + data->layers = MEM_callocN(sizeof(BME_CustomDataLayer)*data->totlayer, "BMesh Custom Data Layers"); + data->pool = BLI_mempool_create(data->totsize, initalloc, initalloc); + /*initialize layer data*/ + for(i=0; i < BME_CD_NUMTYPES; i++){ + if(init->layout[i]){ + info = BME_layerType_getInfo(i); + for(j=0; j < init->layout[i]; j++){ + if(j==0) data->layers[j+i].active = init->active[i]; + data->layers[j+i].type = i; + data->layers[j+i].offset = offset; + strcpy(data->layers[j+i].name, &(init->nametemplate[j+i])); + offset += info->size; + } + } + } + } +} + +void BME_CD_Free(BME_CustomData *data) +{ + if(data->pool) BLI_mempool_destroy(data->pool); +} + +/*Block level ops*/ +void BME_CD_free_block(BME_CustomData *data, void **block) +{ + const BME_LayerTypeInfo *typeInfo; + int i; + + if(!*block) return; + for(i = 0; i < data->totlayer; ++i) { + typeInfo = BME_layerType_getInfo(data->layers[i].type); + if(typeInfo->free) { + int offset = data->layers[i].offset; + typeInfo->free((char*)*block + offset, 1, typeInfo->size); + } + } + BLI_mempool_free(data->pool, *block); + *block = NULL; +} + + +static void BME_CD_alloc_block(BME_CustomData *data, void **block) +{ + + if (*block) BME_CD_free_block(data, block); //if we copy layers that have their own free functions like deformverts + + if (data->totsize > 0) + *block = BLI_mempool_alloc(data->pool); + else + *block = NULL; +} + +void BME_CD_copy_data(const BME_CustomData *source, BME_CustomData *dest, + void *src_block, void **dest_block) +{ + const BME_LayerTypeInfo *typeInfo; + int dest_i, src_i; + + if (!*dest_block) /*for addXXXlist functions!*/ + BME_CD_alloc_block(dest, dest_block); + + /* copies a layer at a time */ + dest_i = 0; + for(src_i = 0; src_i < source->totlayer; ++src_i) { + + /* find the first dest layer with type >= the source type + * (this should work because layers are ordered by type) + */ + while(dest_i < dest->totlayer + && dest->layers[dest_i].type < source->layers[src_i].type) + ++dest_i; + + /* if there are no more dest layers, we're done */ + if(dest_i >= dest->totlayer) return; + + /* if we found a matching layer, copy the data */ + if(dest->layers[dest_i].type == source->layers[src_i].type && + strcmp(dest->layers[dest_i].name, source->layers[src_i].name) == 0) { + char *src_data = (char*)src_block + source->layers[src_i].offset; + char *dest_data = (char*)*dest_block + dest->layers[dest_i].offset; + + typeInfo = BME_layerType_getInfo(source->layers[src_i].type); + + if(typeInfo->copy) + typeInfo->copy(src_data, dest_data, 1); + else + memcpy(dest_data, src_data, typeInfo->size); + + /* if there are multiple source & dest layers of the same type, + * we don't want to copy all source layers to the same dest, so + * increment dest_i + */ + ++dest_i; + } + } +} +void BME_CD_set_default(BME_CustomData *data, void **block) +{ + const BME_LayerTypeInfo *typeInfo; + int i; + + if (!*block) + BME_CD_alloc_block(data, block); //for addXXXlist functions... + + for(i = 0; i < data->totlayer; ++i) { + int offset = data->layers[i].offset; + + typeInfo = BME_layerType_getInfo(data->layers[i].type); + + if(typeInfo->set_default) + typeInfo->set_default((char*)*block + offset, 1); + } +} |