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