Files
test2/source/blender/blenkernel/intern/customdata.c
Ben Batt 4f8079d49c Modifier Stack: Limit calculation to required data.
This commit upgrades the modifier stack to only calculate the data which is
needed, either by modifiers further down the stack or by other functions at
the end of the stack (e.g. drawing functions).

This speeds up modifier stack recalculation, especially where vertex
groups and UV coordinates are concerned. For example, a mesh with an Armature
modifier followed by a Subsurf modifier would previously have required the
Subsurf modifier to interpolate all the vertex groups in the mesh, slowing
down modifier calculations considerably. With this update, vertex group data
is not propagated beyond the Armature modifier, so calculations are faster.

Note that this depends on the order of modifiers in the stack. If the Armature
and Subsurf modifiers were swapped in the above example, the Subsurf modifier
would have to interpolate vertex groups, as they are needed by the Armature
modifier.
2006-12-05 17:42:03 +00:00

1132 lines
29 KiB
C

/*
* $Id$
*
* ***** 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 CustomData.
*
* BKE_customdata.h contains the function prototypes for this file.
*
*/
#include "BKE_customdata.h"
#include "BLI_linklist.h"
#include "DNA_customdata_types.h"
#include "DNA_listBase.h"
#include "DNA_meshdata_types.h"
#include "MEM_guardedalloc.h"
#include <string.h>
/* number of layers to add when growing a CustomData object */
#define CUSTOMDATA_GROW 5
/********************* Layer type information **********************/
typedef struct LayerTypeInfo {
int size; /* the memory size of one element of this layer's data */
char *structname; /* name of the struct used, for file writing */
int structnum; /* number of structs per element, for file writing */
/* a function to copy count elements of this layer's data
* (deep copy if appropriate)
* size should be the size of one element of this layer's data (e.g.
* LayerTypeInfo.size)
* if NULL, memcpy is used
*/
void (*copy)(const void *source, void *dest, int count, int size);
/* a function to free any dynamically allocated components of this
* layer's data (note the data pointer itself should not be freed)
* size should be the size of one element of this layer's data (e.g.
* LayerTypeInfo.size)
*/
void (*free)(void *data, int count, int size);
/* a function to interpolate between count source elements of this
* layer's data and store the result in dest
* if weights == NULL or sub_weights == NULL, they should default to 1
*
* weights gives the weight for each element in sources
* sub_weights gives the sub-element weights for each element in sources
* (there should be (sub element count)^2 weights per element)
* count gives the number of elements in sources
*/
void (*interp)(void **sources, float *weights, float *sub_weights,
int count, void *dest);
/* a function to swap the data in corners of the element */
void (*swap)(void *data, int *corner_indices);
/* a function to set a layer's data to default values. if NULL, the
default is assumed to be all zeros */
void (*set_default)(void *data, int count);
} LayerTypeInfo;
static void layerCopy_mdeformvert(const void *source, void *dest,
int count, int size)
{
int i;
memcpy(dest, source, count * size);
for(i = 0; i < count; ++i) {
MDeformVert *dvert = (MDeformVert *)((char *)dest + i * size);
MDeformWeight *dw = MEM_callocN(dvert->totweight * sizeof(*dw),
"layerCopy_mdeformvert dw");
memcpy(dw, dvert->dw, dvert->totweight * sizeof(*dw));
dvert->dw = dw;
}
}
static void layerFree_mdeformvert(void *data, int count, int size)
{
int i;
for(i = 0; i < count; ++i) {
MDeformVert *dvert = (MDeformVert *)((char *)data + i * size);
if(dvert->dw) {
MEM_freeN(dvert->dw);
dvert->dw = NULL;
dvert->totweight = 0;
}
}
}
static void linklist_free_simple(void *link)
{
MEM_freeN(link);
}
static void layerInterp_mdeformvert(void **sources, float *weights,
float *sub_weights, int count, void *dest)
{
MDeformVert *dvert = dest;
LinkNode *dest_dw = NULL; /* a list of lists of MDeformWeight pointers */
LinkNode *node;
int i, j, totweight;
if(count <= 0) return;
/* build a list of unique def_nrs for dest */
totweight = 0;
for(i = 0; i < count; ++i) {
MDeformVert *source = sources[i];
float interp_weight = weights ? weights[i] : 1.0f;
for(j = 0; j < source->totweight; ++j) {
MDeformWeight *dw = &source->dw[j];
for(node = dest_dw; node; node = node->next) {
MDeformWeight *tmp_dw = (MDeformWeight *)node->link;
if(tmp_dw->def_nr == dw->def_nr) {
tmp_dw->weight += dw->weight * interp_weight;
break;
}
}
/* if this def_nr is not in the list, add it */
if(!node) {
MDeformWeight *tmp_dw = MEM_callocN(sizeof(*tmp_dw),
"layerInterp_mdeformvert tmp_dw");
tmp_dw->def_nr = dw->def_nr;
tmp_dw->weight = dw->weight * interp_weight;
BLI_linklist_prepend(&dest_dw, tmp_dw);
totweight++;
}
}
}
/* now we know how many unique deform weights there are, so realloc */
if(dvert->dw) MEM_freeN(dvert->dw);
if(totweight) {
dvert->dw = MEM_callocN(sizeof(*dvert->dw) * totweight,
"layerInterp_mdeformvert dvert->dw");
dvert->totweight = totweight;
for(i = 0, node = dest_dw; node; node = node->next, ++i)
dvert->dw[i] = *((MDeformWeight *)node->link);
}
else
memset(dvert, 0, sizeof(*dvert));
BLI_linklist_free(dest_dw, linklist_free_simple);
}
static void layerInterp_msticky(void **sources, float *weights,
float *sub_weights, int count, void *dest)
{
float co[2], w;
MSticky *mst;
int i;
co[0] = co[1] = 0.0f;
for(i = 0; i < count; i++) {
w = weights ? weights[i] : 1.0f;
mst = (MSticky*)sources[i];
co[0] += w*mst->co[0];
co[1] += w*mst->co[1];
}
mst = (MSticky*)dest;
mst->co[0] = co[0];
mst->co[1] = co[1];
}
static void layerCopy_tface(const void *source, void *dest, int count, int size)
{
const MTFace *source_tf = (const MTFace*)source;
MTFace *dest_tf = (MTFace*)dest;
int i;
for(i = 0; i < count; ++i) {
dest_tf[i] = source_tf[i];
dest_tf[i].flag &= ~TF_ACTIVE;
}
}
static void layerInterp_tface(void **sources, float *weights,
float *sub_weights, int count, void *dest)
{
MTFace *tf = dest;
int i, j, k;
float uv[4][2];
float *sub_weight;
if(count <= 0) return;
memset(uv, 0, sizeof(uv));
sub_weight = sub_weights;
for(i = 0; i < count; ++i) {
float weight = weights ? weights[i] : 1;
MTFace *src = sources[i];
for(j = 0; j < 4; ++j) {
if(sub_weights) {
for(k = 0; k < 4; ++k, ++sub_weight) {
float w = (*sub_weight) * weight;
float *tmp_uv = src->uv[k];
uv[j][0] += tmp_uv[0] * w;
uv[j][1] += tmp_uv[1] * w;
}
} else {
uv[j][0] += src->uv[j][0] * weight;
uv[j][1] += src->uv[j][1] * weight;
}
}
}
*tf = *(MTFace *)sources[0];
for(j = 0; j < 4; ++j) {
tf->uv[j][0] = uv[j][0];
tf->uv[j][1] = uv[j][1];
}
}
static void layerSwap_tface(void *data, int *corner_indices)
{
MTFace *tf = data;
float uv[4][2];
int j;
for(j = 0; j < 4; ++j) {
uv[j][0] = tf->uv[corner_indices[j]][0];
uv[j][1] = tf->uv[corner_indices[j]][1];
}
memcpy(tf->uv, uv, sizeof(tf->uv));
}
static void layerDefault_tface(void *data, int count)
{
static MTFace default_tf = {{{0, 1}, {0, 0}, {1, 0}, {1, 1}}, NULL,
TF_SELECT, 0, TF_DYNAMIC, 0, 0};
MTFace *tf = (MTFace*)data;
int i;
for(i = 0; i < count; i++)
tf[i] = default_tf;
}
static void layerInterp_mcol(void **sources, float *weights,
float *sub_weights, int count, void *dest)
{
MCol *mc = dest;
int i, j, k;
struct {
float a;
float r;
float g;
float b;
} col[4];
float *sub_weight;
if(count <= 0) return;
memset(col, 0, sizeof(col));
sub_weight = sub_weights;
for(i = 0; i < count; ++i) {
float weight = weights ? weights[i] : 1;
for(j = 0; j < 4; ++j) {
if(sub_weights) {
MCol *src = sources[i];
for(k = 0; k < 4; ++k, ++sub_weight, ++src) {
col[j].a += src->a * (*sub_weight) * weight;
col[j].r += src->r * (*sub_weight) * weight;
col[j].g += src->g * (*sub_weight) * weight;
col[j].b += src->b * (*sub_weight) * weight;
}
} else {
MCol *src = sources[i];
col[j].a += src[j].a * weight;
col[j].r += src[j].r * weight;
col[j].g += src[j].g * weight;
col[j].b += src[j].b * weight;
}
}
}
for(j = 0; j < 4; ++j) {
mc[j].a = (int)col[j].a;
mc[j].r = (int)col[j].r;
mc[j].g = (int)col[j].g;
mc[j].b = (int)col[j].b;
}
}
static void layerSwap_mcol(void *data, int *corner_indices)
{
MCol *mcol = data;
MCol col[4];
int j;
for(j = 0; j < 4; ++j)
col[j] = mcol[corner_indices[j]];
memcpy(mcol, col, sizeof(col));
}
static void layerDefault_mcol(void *data, int count)
{
static MCol default_mcol = {255, 255, 255, 255};
MCol *mcol = (MCol*)data;
int i;
for(i = 0; i < 4*count; i++)
mcol[i] = default_mcol;
}
const LayerTypeInfo LAYERTYPEINFO[CD_NUMTYPES] = {
{sizeof(MVert), "MVert", 1, NULL, NULL, NULL, NULL, NULL},
{sizeof(MSticky), "MSticky", 1, NULL, NULL, layerInterp_msticky, NULL, NULL},
{sizeof(MDeformVert), "MDeformVert", 1, layerCopy_mdeformvert,
layerFree_mdeformvert, layerInterp_mdeformvert, NULL, NULL},
{sizeof(MEdge), "MEdge", 1, NULL, NULL, NULL, NULL, NULL},
{sizeof(MFace), "MFace", 1, NULL, NULL, NULL, NULL, NULL},
{sizeof(MTFace), "MTFace", 1, layerCopy_tface, NULL, layerInterp_tface,
layerSwap_tface, layerDefault_tface},
/* 4 MCol structs per face */
{sizeof(MCol)*4, "MCol", 4, NULL, NULL, layerInterp_mcol, layerSwap_mcol,
layerDefault_mcol},
{sizeof(int), "", 0, NULL, NULL, NULL, NULL, NULL},
/* 3 floats per normal vector */
{sizeof(float)*3, "", 0, NULL, NULL, NULL, NULL, NULL},
{sizeof(int), "", 0, NULL, NULL, NULL, NULL, NULL},
};
const char *LAYERTYPENAMES[CD_NUMTYPES] = {
"CDMVert", "CDMSticky", "CDMDeformVert", "CDMEdge", "CDMFace", "CDMTFace",
"CDMCol", "CDOrigIndex", "CDNormal", "CDFlags"};
const CustomDataMask CD_MASK_BAREMESH =
CD_MASK_MVERT | CD_MASK_MEDGE | CD_MASK_MFACE;
const CustomDataMask CD_MASK_MESH =
CD_MASK_MVERT | CD_MASK_MEDGE | CD_MASK_MFACE |
CD_MASK_MSTICKY | CD_MASK_MDEFORMVERT | CD_MASK_MTFACE | CD_MASK_MCOL;
const CustomDataMask CD_MASK_EDITMESH =
CD_MASK_MSTICKY | CD_MASK_MDEFORMVERT | CD_MASK_MTFACE |
CD_MASK_MCOL;
const CustomDataMask CD_MASK_DERIVEDMESH =
CD_MASK_MSTICKY | CD_MASK_MDEFORMVERT | CD_MASK_MTFACE |
CD_MASK_MCOL | CD_MASK_ORIGINDEX;
static const LayerTypeInfo *layerType_getInfo(int type)
{
if(type < 0 || type >= CD_NUMTYPES) return NULL;
return &LAYERTYPEINFO[type];
}
static const char *layerType_getName(int type)
{
if(type < 0 || type >= CD_NUMTYPES) return NULL;
return LAYERTYPENAMES[type];
}
/********************* CustomData functions *********************/
static void CustomData_update_offsets(CustomData *data)
{
const LayerTypeInfo *typeInfo;
int i, offset = 0;
for(i = 0; i < data->totlayer; ++i) {
typeInfo = layerType_getInfo(data->layers[i].type);
data->layers[i].offset = offset;
offset += typeInfo->size;
}
data->totsize = offset;
}
void CustomData_merge(const struct CustomData *source, struct CustomData *dest,
CustomDataMask mask, int alloctype, int totelem)
{
const LayerTypeInfo *typeInfo;
CustomDataLayer *layer;
int i, flag, type;
void *data;
for(i = 0; i < source->totlayer; ++i) {
layer = &source->layers[i];
typeInfo = layerType_getInfo(layer->type);
if(layer->flag & CD_FLAG_NOCOPY) continue;
else if(!(mask & (1 << layer->type))) continue;
else if(CustomData_has_layer(dest, layer->type)) continue;
type = layer->type;
flag = layer->flag & ~CD_FLAG_NOFREE;
data = layer->data;
if (alloctype == CD_CALLOC || alloctype == CD_DUPLICATE) {
CustomData_add_layer(dest, type, flag, NULL, totelem);
}
else if (alloctype == CD_REFERENCE) {
CustomData_add_layer(dest, type, flag|CD_FLAG_NOFREE, data, totelem);
}
else if (alloctype == CD_DEFAULT) {
data = CustomData_add_layer(dest, type, flag, NULL, totelem);
if(typeInfo->set_default)
typeInfo->set_default((char*)data, totelem);
}
}
if (alloctype == CD_DUPLICATE)
CustomData_copy_data(source, dest, 0, 0, totelem);
CustomData_update_offsets(dest);
}
void CustomData_copy(const struct CustomData *source, struct CustomData *dest,
CustomDataMask mask, int alloctype, int totelem)
{
memset(dest, 0, sizeof(*dest));
CustomData_merge(source, dest, mask, alloctype, totelem);
}
static void CustomData_free_layer__internal(CustomDataLayer *layer, int totelem)
{
const LayerTypeInfo *typeInfo;
if(!(layer->flag & CD_FLAG_NOFREE) && layer->data) {
typeInfo = layerType_getInfo(layer->type);
if(typeInfo->free)
typeInfo->free(layer->data, totelem, typeInfo->size);
if(layer->data)
MEM_freeN(layer->data);
}
}
void CustomData_free(CustomData *data, int totelem)
{
int i;
for(i = 0; i < data->totlayer; ++i)
CustomData_free_layer__internal(&data->layers[i], totelem);
if(data->layers)
MEM_freeN(data->layers);
memset(data, 0, sizeof(*data));
}
/* gets index of first layer matching type after start_index
* if start_index < 0, starts searching at 0
* returns -1 if there is no layer of type
*/
static int CustomData_find_next(const CustomData *data, int type,
int start_index)
{
int i = start_index + 1;
if(i < 0) i = 0;
for(; i < data->totlayer; ++i)
if(data->layers[i].type == type) return i;
return -1;
}
static int customData_resize(CustomData *data, int amount)
{
CustomDataLayer *tmp = MEM_callocN(sizeof(*tmp)*(data->maxlayer + amount),
"CustomData->layers");
if(!tmp) return 0;
data->maxlayer += amount;
if (data->layers) {
memcpy(tmp, data->layers, sizeof(*tmp) * data->totlayer);
MEM_freeN(data->layers);
}
data->layers = tmp;
return 1;
}
static int customData_add_layer__internal(CustomData *data, int type, int flag,
void *layer)
{
int index = data->totlayer;
if(index >= data->maxlayer)
if(!customData_resize(data, CUSTOMDATA_GROW))
return 0;
/* keep layers ordered by type */
for( ; index > 0 && data->layers[index - 1].type > type; --index)
data->layers[index] = data->layers[index - 1];
data->layers[index].type = type;
data->layers[index].flag = flag;
data->layers[index].data = layer;
data->totlayer++;
CustomData_update_offsets(data);
return 1;
}
void *CustomData_add_layer(CustomData *data, int type, int flag,
void *layerdata, int totelem)
{
int size = layerType_getInfo(type)->size * totelem;
void *tmpdata = layerdata;
if(totelem > 0) {
if(!tmpdata)
tmpdata = MEM_callocN(size, layerType_getName(type));
if(!tmpdata)
return NULL;
}
if(!customData_add_layer__internal(data, type, flag, tmpdata)) {
if(tmpdata)
MEM_freeN(tmpdata);
return NULL;
}
return tmpdata;
}
int CustomData_free_layer(CustomData *data, int type, int totelem)
{
int index = CustomData_find_next(data, type, -1);
if (index < 0) return 0;
CustomData_free_layer__internal(&data->layers[index], totelem);
for(++index; index < data->totlayer; ++index)
data->layers[index - 1] = data->layers[index];
data->totlayer--;
if(data->totlayer <= data->maxlayer-CUSTOMDATA_GROW)
customData_resize(data, -CUSTOMDATA_GROW);
CustomData_update_offsets(data);
return 1;
}
int CustomData_has_layer(const CustomData *data, int type)
{
return (CustomData_find_next(data, type, -1) != -1);
}
void *CustomData_duplicate_referenced_layer(struct CustomData *data, int type)
{
CustomDataLayer *layer;
int layer_index;
/* get the layer index of the first layer of type */
layer_index = CustomData_find_next(data, type, -1);
if(layer_index < 0) return NULL;
layer = &data->layers[layer_index];
if (layer->flag & CD_FLAG_NOFREE) {
layer->data = MEM_dupallocN(layer->data);
layer->flag &= ~CD_FLAG_NOFREE;
}
return layer->data;
}
void CustomData_free_temporary(CustomData *data, int totelem)
{
CustomDataLayer *layer;
int i, j;
for(i = 0, j = 0; i < data->totlayer; ++i) {
layer = &data->layers[i];
if (i != j)
data->layers[j] = data->layers[i];
if ((layer->flag & CD_FLAG_TEMPORARY) == CD_FLAG_TEMPORARY)
CustomData_free_layer__internal(layer, totelem);
else
j++;
}
data->totlayer = j;
if(data->totlayer <= data->maxlayer-CUSTOMDATA_GROW)
customData_resize(data, -CUSTOMDATA_GROW);
CustomData_update_offsets(data);
}
int CustomData_compat(const CustomData *data1, const CustomData *data2)
{
int i;
if(data1->totlayer != data2->totlayer) return 0;
for(i = 0; i < data1->totlayer; ++i) {
if(data1->layers[i].type != data2->layers[i].type) return 0;
if(data1->layers[i].flag != data2->layers[i].flag) return 0;
}
return 1;
}
void CustomData_set_only_copy(const struct CustomData *data,
CustomDataMask mask)
{
int i;
for(i = 0; i < data->totlayer; ++i)
if(!(mask & (1 << data->layers[i].type)))
data->layers[i].flag |= CD_FLAG_NOCOPY;
}
void CustomData_copy_data(const CustomData *source, CustomData *dest,
int source_index, int dest_index, int count)
{
const LayerTypeInfo *type_info;
int src_i, dest_i;
int src_offset;
int dest_offset;
/* copies a layer at a time */
dest_i = 0;
for(src_i = 0; src_i < source->totlayer; ++src_i) {
if(source->layers[src_i].flag & CD_FLAG_NOCOPY) continue;
/* 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) {
char *src_data = source->layers[src_i].data;
char *dest_data = dest->layers[dest_i].data;
type_info = layerType_getInfo(source->layers[src_i].type);
src_offset = source_index * type_info->size;
dest_offset = dest_index * type_info->size;
if(type_info->copy)
type_info->copy(src_data + src_offset,
dest_data + dest_offset,
count, type_info->size);
else
memcpy(dest_data + dest_offset,
src_data + src_offset,
count * type_info->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 CustomData_free_elem(CustomData *data, int index, int count)
{
int i;
const LayerTypeInfo *typeInfo;
for(i = 0; i < data->totlayer; ++i) {
if(!(data->layers[i].flag & CD_FLAG_NOFREE)) {
typeInfo = layerType_getInfo(data->layers[i].type);
if(typeInfo->free) {
int offset = typeInfo->size * index;
typeInfo->free((char *)data->layers[i].data + offset,
count, typeInfo->size);
}
}
}
}
#define SOURCE_BUF_SIZE 100
void CustomData_interp(const CustomData *source, CustomData *dest,
int *src_indices, float *weights, float *sub_weights,
int count, int dest_index)
{
int src_i, dest_i;
int dest_offset;
int j;
void *source_buf[SOURCE_BUF_SIZE];
void **sources = source_buf;
/* slow fallback in case we're interpolating a ridiculous number of
* elements
*/
if(count > SOURCE_BUF_SIZE)
sources = MEM_callocN(sizeof(*sources) * count,
"CustomData_interp sources");
/* interpolates a layer at a time */
for(src_i = 0; src_i < source->totlayer; ++src_i) {
CustomDataLayer *source_layer = &source->layers[src_i];
const LayerTypeInfo *type_info =
layerType_getInfo(source_layer->type);
dest_i = CustomData_find_next(dest, source_layer->type, -1);
if(dest_i >= 0 && type_info->interp) {
void *src_data = source_layer->data;
for(j = 0; j < count; ++j)
sources[j] = (char *)src_data
+ type_info->size * src_indices[j];
dest_offset = dest_index * type_info->size;
type_info->interp(sources, weights, sub_weights, count,
(char *)dest->layers[dest_i].data + dest_offset);
}
}
if(count > SOURCE_BUF_SIZE) MEM_freeN(sources);
}
void CustomData_swap(struct CustomData *data, int index, int *corner_indices)
{
const LayerTypeInfo *typeInfo;
int i;
for(i = 0; i < data->totlayer; ++i) {
typeInfo = layerType_getInfo(data->layers[i].type);
if(typeInfo->swap) {
int offset = typeInfo->size * index;
typeInfo->swap((char *)data->layers[i].data + offset, corner_indices);
}
}
}
void *CustomData_get(const CustomData *data, int index, int type)
{
int offset;
int layer_index;
/* get the layer index of the first layer of type */
layer_index = CustomData_find_next(data, type, -1);
if(layer_index < 0) return NULL;
/* get the offset of the desired element */
offset = layerType_getInfo(type)->size * index;
return (char *)data->layers[layer_index].data + offset;
}
void *CustomData_get_layer(const CustomData *data, int type)
{
/* get the layer index of the first layer of type */
int layer_index = CustomData_find_next(data, type, -1);
if(layer_index < 0) return NULL;
return data->layers[layer_index].data;
}
void *CustomData_set_layer(const CustomData *data, int type, void *ptr)
{
/* get the layer index of the first layer of type */
int layer_index = CustomData_find_next(data, type, -1);
if(layer_index < 0) return NULL;
data->layers[layer_index].data = ptr;
return ptr;
}
void CustomData_set(const CustomData *data, int index, int type, void *source)
{
void *dest = CustomData_get(data, index, type);
const LayerTypeInfo *type_info = layerType_getInfo(type);
if(!dest) return;
if(type_info->copy)
type_info->copy(source, dest, 1, type_info->size);
else
memcpy(dest, source, type_info->size);
}
void CustomData_set_default(CustomData *data, int index, int count)
{
const LayerTypeInfo *typeInfo;
int i;
for(i = 0; i < data->totlayer; ++i) {
typeInfo = layerType_getInfo(data->layers[i].type);
if(typeInfo->set_default) {
int offset = typeInfo->size * index;
typeInfo->set_default((char *)data->layers[i].data + offset, count);
}
}
}
/* EditMesh functions */
void CustomData_em_free_block(CustomData *data, void **block)
{
const LayerTypeInfo *typeInfo;
int i;
if(!*block) return;
for(i = 0; i < data->totlayer; ++i) {
if(!(data->layers[i].flag & CD_FLAG_NOFREE)) {
typeInfo = layerType_getInfo(data->layers[i].type);
if(typeInfo->free) {
int offset = data->layers[i].offset;
typeInfo->free((char*)*block + offset, 1, typeInfo->size);
}
}
}
MEM_freeN(*block);
*block = NULL;
}
static void CustomData_em_alloc_block(CustomData *data, void **block)
{
/* TODO: optimize free/alloc */
if (*block)
CustomData_em_free_block(data, block);
if (data->totsize > 0)
*block = MEM_callocN(data->totsize, "CustomData EM block");
else
*block = NULL;
}
void CustomData_em_copy_data(const CustomData *source, CustomData *dest,
void *src_block, void **dest_block)
{
const LayerTypeInfo *type_info;
int dest_i, src_i;
if (!*dest_block)
CustomData_em_alloc_block(dest, dest_block);
/* copies a layer at a time */
dest_i = 0;
for(src_i = 0; src_i < source->totlayer; ++src_i) {
if(source->layers[src_i].flag & CD_FLAG_NOCOPY) continue;
/* 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) {
char *src_data = (char*)src_block + source->layers[src_i].offset;
char *dest_data = (char*)*dest_block + dest->layers[dest_i].offset;
type_info = layerType_getInfo(source->layers[src_i].type);
if(type_info->copy)
type_info->copy(src_data, dest_data, 1, type_info->size);
else
memcpy(dest_data, src_data, type_info->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 *CustomData_em_get(const CustomData *data, void *block, int type)
{
int layer_index;
/* get the layer index of the first layer of type */
layer_index = CustomData_find_next(data, type, -1);
if(layer_index < 0) return NULL;
return (char *)block + data->layers[layer_index].offset;
}
void CustomData_em_set(CustomData *data, void *block, int type, void *source)
{
void *dest = CustomData_em_get(data, block, type);
const LayerTypeInfo *type_info = layerType_getInfo(type);
if(!dest) return;
if(type_info->copy)
type_info->copy(source, dest, 1, type_info->size);
else
memcpy(dest, source, type_info->size);
}
void CustomData_em_interp(CustomData *data, void **src_blocks, float *weights,
float *sub_weights, int count, void *dest_block)
{
int i, j;
void *source_buf[SOURCE_BUF_SIZE];
void **sources = source_buf;
/* slow fallback in case we're interpolating a ridiculous number of
* elements
*/
if(count > SOURCE_BUF_SIZE)
sources = MEM_callocN(sizeof(*sources) * count,
"CustomData_interp sources");
/* interpolates a layer at a time */
for(i = 0; i < data->totlayer; ++i) {
CustomDataLayer *layer = &data->layers[i];
const LayerTypeInfo *type_info = layerType_getInfo(layer->type);
if(type_info->interp) {
for(j = 0; j < count; ++j)
sources[j] = (char *)src_blocks[j] + layer->offset;
type_info->interp(sources, weights, sub_weights, count,
(char *)dest_block + layer->offset);
}
}
if(count > SOURCE_BUF_SIZE) MEM_freeN(sources);
}
void CustomData_em_set_default(CustomData *data, void **block)
{
const LayerTypeInfo *type_info;
int i;
if (!*block)
CustomData_em_alloc_block(data, block);
for(i = 0; i < data->totlayer; ++i) {
int offset = data->layers[i].offset;
type_info = layerType_getInfo(data->layers[i].type);
if(type_info->set_default)
type_info->set_default((char*)*block + offset, 1);
}
}
void CustomData_to_em_block(const CustomData *source, CustomData *dest,
int src_index, void **dest_block)
{
const LayerTypeInfo *type_info;
int dest_i, src_i, src_offset;
if (!*dest_block)
CustomData_em_alloc_block(dest, dest_block);
/* copies a layer at a time */
dest_i = 0;
for(src_i = 0; src_i < source->totlayer; ++src_i) {
if(source->layers[src_i].flag & CD_FLAG_NOCOPY) continue;
/* 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) {
int offset = dest->layers[dest_i].offset;
char *src_data = source->layers[src_i].data;
char *dest_data = (char*)*dest_block + offset;
type_info = layerType_getInfo(dest->layers[dest_i].type);
src_offset = src_index * type_info->size;
if(type_info->copy)
type_info->copy(src_data + src_offset, dest_data, 1,
type_info->size);
else
memcpy(dest_data, src_data + src_offset, type_info->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 CustomData_from_em_block(const CustomData *source, CustomData *dest,
void *src_block, int dest_index)
{
const LayerTypeInfo *type_info;
int dest_i, src_i, dest_offset;
/* copies a layer at a time */
dest_i = 0;
for(src_i = 0; src_i < source->totlayer; ++src_i) {
if(source->layers[src_i].flag & CD_FLAG_NOCOPY) continue;
/* 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) {
int offset = source->layers[src_i].offset;
char *src_data = (char*)src_block + offset;
char *dest_data = dest->layers[dest_i].data;
type_info = layerType_getInfo(dest->layers[dest_i].type);
dest_offset = dest_index * type_info->size;
if(type_info->copy)
type_info->copy(src_data, dest_data + dest_offset, 1,
type_info->size);
else
memcpy(dest_data + dest_offset, src_data, type_info->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 CustomData_file_write_info(int type, char **structname, int *structnum)
{
const LayerTypeInfo *type_info = layerType_getInfo(type);
*structname = type_info->structname;
*structnum = type_info->structnum;
}
int CustomData_sizeof(int type)
{
const LayerTypeInfo *type_info = layerType_getInfo(type);
return type_info->size;
}
const char *CustomData_layertype_name(int type)
{
return layerType_getName(type);
}