109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
/*
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup DNA
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*/
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#pragma once
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#include "DNA_ID.h"
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#include "DNA_customdata_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* A reusable data structure for geometry consisting of many curves. All control point data is
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* stored contiguously for better efficiency. Data for each curve is stored as a slice of the
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* main #point_data array.
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*
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* The data structure is meant to be embedded in other data-blocks to allow reusing
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* curve-processing algorithms for multiple Blender data-block types.
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*/
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typedef struct CurvesGeometry {
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/**
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* A runtime pointer to the "position" attribute data.
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* \note This data is owned by #point_data.
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*/
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float (*position)[3];
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/**
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* A runtime pointer to the "radius" attribute data.
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* \note This data is owned by #point_data.
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*/
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float *radius;
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/**
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* The start index of each curve in the point data. The size of each curve can be calculated by
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* subtracting the offset from the next offset. That is valid even for the last curve because
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* this array is allocated with a length one larger than the number of splines.
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*
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* \note This is *not* stored in #CustomData because its size is one larger than #curve_data.
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*/
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int *offsets;
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/**
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* All attributes stored on control points (#ATTR_DOMAIN_POINT).
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*/
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CustomData point_data;
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/**
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* All attributes stored on curves (#ATTR_DOMAIN_CURVE).
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*/
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CustomData curve_data;
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/**
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* The total number of control points in all curves.
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*/
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int point_size;
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/**
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* The number of curves in the data-block.
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*/
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int curve_size;
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} CurvesGeometry;
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typedef struct Hair {
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ID id;
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/* Animation data (must be immediately after id). */
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struct AnimData *adt;
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CurvesGeometry geometry;
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int flag;
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int attributes_active_index;
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/* Materials. */
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struct Material **mat;
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short totcol;
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short _pad2[3];
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/* Draw Cache. */
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void *batch_cache;
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} Hair;
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/* Hair.flag */
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enum {
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HA_DS_EXPAND = (1 << 0),
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};
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/* Only one material supported currently. */
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#define HAIR_MATERIAL_NR 1
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#ifdef __cplusplus
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}
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#endif
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