4f8079d49c
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.
206 lines
8.5 KiB
C
206 lines
8.5 KiB
C
/*
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2006 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): Ben Batt <benbatt@gmail.com>
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/* CustomData interface, see also DNA_customdata_types.h. */
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#ifndef BKE_CUSTOMDATA_H
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#define BKE_CUSTOMDATA_H
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struct CustomData;
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struct CustomDataLayer;
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typedef int CustomDataMask;
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extern const CustomDataMask CD_MASK_BAREMESH;
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extern const CustomDataMask CD_MASK_MESH;
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extern const CustomDataMask CD_MASK_EDITMESH;
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extern const CustomDataMask CD_MASK_DERIVEDMESH;
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/* for ORIGINDEX layer type, indicates no original index for this element */
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#define ORIGINDEX_NONE -1
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/* initialises a CustomData object with the same layer setup as source and
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* memory space for totelem elements. mask must be an array of length
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* CD_NUMTYPES elements, that indicate if a layer can be copied. */
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/* copy/merge allocation types */
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#define CD_CALLOC 0 /* allocate blank memory for all layers */
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#define CD_DEFAULT 1 /* allocate layers and set them to their defaults */
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#define CD_DUPLICATE 2 /* do a full copy of all layer */
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#define CD_REFERENCE 3 /* reference original pointers, set layer flag NOFREE */
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/* initialises a CustomData object with the same layer setup as source.
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* mask is a bitfield where (mask & (1 << (layer type))) indicates
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* if a layer should be copied or not. alloctype must be one of the above. */
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void CustomData_copy(const struct CustomData *source, struct CustomData *dest,
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CustomDataMask mask, int alloctype, int totelem);
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/* same as the above, except that will preserve existing layers, and only add
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* the layers that were not there yet */
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void CustomData_merge(const struct CustomData *source, struct CustomData *dest,
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CustomDataMask mask, int alloctype, int totelem);
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/* frees data associated with a CustomData object (doesn't free the object
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* itself, though)
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*/
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void CustomData_free(struct CustomData *data, int totelem);
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/* frees all layers with flag LAYERFLAG_TEMPORARY */
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void CustomData_free_temporary(struct CustomData *data, int totelem);
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/* adds a data layer of the given type to the CustomData object, optionally
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* backed by an external data array
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* if layer != NULL, it is used as the layer data array, otherwise new memory
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* is allocated
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* the layer data will be freed by CustomData_free unless
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* (flag & LAYERFLAG_NOFREE) is true
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* returns the data of the layer
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*
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* in editmode, use EM_add_data_layer instead of this function
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*/
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void *CustomData_add_layer(struct CustomData *data, int type, int flag,
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void *layer, int totelem);
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/* frees the first data layer with the give type.
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* returns 1 on succes, 0 if no layer with the given type is found
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*
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* in editmode, use EM_free_data_layer instead of this function
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*/
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int CustomData_free_layer(struct CustomData *data, int type, int totelem);
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/* returns 1 if the two objects are compatible (same layer types and
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* flags in the same order), 0 if not
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*/
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int CustomData_compat(const struct CustomData *data1,
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const struct CustomData *data2);
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/* returns 1 if a layer with the specified type exists */
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int CustomData_has_layer(const struct CustomData *data, int type);
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/* duplicate data of a layer with flag NOFREE, and remove that flag.
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* returns the layer data */
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void *CustomData_duplicate_referenced_layer(struct CustomData *data, int type);
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/* set the CD_FLAG_NOCOPY flag in custom data layers where the mask is
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* zero for the layer type, so only layer types specified by the mask
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* will be copied
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*/
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void CustomData_set_only_copy(const struct CustomData *data,
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CustomDataMask mask);
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/* copies data from one CustomData object to another
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* objects need not be compatible, each source layer is copied to the
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* first dest layer of correct type (if there is none, the layer is skipped)
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* return 1 on success, 0 on failure
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*/
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void CustomData_copy_data(const struct CustomData *source,
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struct CustomData *dest, int source_index,
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int dest_index, int count);
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void CustomData_em_copy_data(const struct CustomData *source,
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struct CustomData *dest, void *src_block,
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void **dest_block);
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/* frees data in a CustomData object
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* return 1 on success, 0 on failure
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*/
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void CustomData_free_elem(struct CustomData *data, int index, int count);
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/* interpolates data from one CustomData object to another
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* objects need not be compatible, each source layer is interpolated to the
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* first dest layer of correct type (if there is none, the layer is skipped)
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* if weights == NULL or sub_weights == NULL, they default to all 1's
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*
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* src_indices gives the source elements to interpolate from
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* weights gives the weight for each source element
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* sub_weights is an array of matrices of weights for sub-elements (matrices
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* should be source->subElems * source->subElems in size)
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* count gives the number of source elements to interpolate from
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* dest_index gives the dest element to write the interpolated value to
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*
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* returns 1 on success, 0 on failure
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*/
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void CustomData_interp(const struct CustomData *source, struct CustomData *dest,
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int *src_indices, float *weights, float *sub_weights,
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int count, int dest_index);
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void CustomData_em_interp(struct CustomData *data, void **src_blocks,
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float *weights, float *sub_weights, int count,
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void *dest_block);
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/* swaps the data in the element corners, to new corners with indices as
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specified in corner_indices. for edges this is an array of length 2, for
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faces an array of length 4 */
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void CustomData_swap(struct CustomData *data, int index, int *corner_indices);
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/* gets a pointer to the data element at index from the first layer of type
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* returns NULL if there is no layer of type
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*/
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void *CustomData_get(const struct CustomData *data, int index, int type);
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void *CustomData_em_get(const struct CustomData *data, void *block, int type);
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/* gets a pointer to the first layer of type
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* returns NULL if there is no layer of type
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*/
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void *CustomData_get_layer(const struct CustomData *data, int type);
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/* set the pointer of to the first layer of type. the old data is not freed.
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* returns the value of ptr if the layer is found, NULL otherwise
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*/
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void *CustomData_set_layer(const struct CustomData *data, int type, void *ptr);
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/* copies the data from source to the data element at index in the first
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* layer of type
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* no effect if there is no layer of type
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*/
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void CustomData_set(const struct CustomData *data, int index, int type,
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void *source);
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void CustomData_em_set(struct CustomData *data, void *block, int type,
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void *source);
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/* set data layers that have a non-zero default value to their defaults */
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void CustomData_set_default(struct CustomData *data, int index, int count);
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/* alloc/free a block of custom data attached to one element in editmode */
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void CustomData_em_set_default(struct CustomData *data, void **block);
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void CustomData_em_free_block(struct CustomData *data, void **block);
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/* copy custom data to/from layers as in mesh/derivedmesh, to editmesh
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blocks of data. the CustomData's must be compatible */
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void CustomData_to_em_block(const struct CustomData *source,
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struct CustomData *dest, int index, void **block);
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void CustomData_from_em_block(const struct CustomData *source,
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struct CustomData *dest, void *block, int index);
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/* query info over types */
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void CustomData_file_write_info(int type, char **structname, int *structnum);
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int CustomData_sizeof(int type);
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/* get the name of a layer type */
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const char *CustomData_layertype_name(int type);
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#endif
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