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/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef __DUALCON_H__
#define __DUALCON_H__
#ifdef WITH_CXX_GUARDEDALLOC
# include "MEM_guardedalloc.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef float (*DualConCo)[3];
typedef unsigned int (*DualConTri)[3];
typedef unsigned int *DualConLoop;
typedef struct DualConInput {
DualConLoop mloop;
DualConCo co;
int co_stride;
int totco;
DualConTri looptri;
int tri_stride;
int tottri;
int loop_stride;
float min[3], max[3];
} DualConInput;
/* callback for allocating memory for output */
typedef void *(*DualConAllocOutput)(int totvert, int totquad);
/* callback for adding a new vertex to the output */
typedef void (*DualConAddVert)(void *output, const float co[3]);
/* callback for adding a new quad to the output */
typedef void (*DualConAddQuad)(void *output, const int vert_indices[4]);
typedef enum {
DUALCON_FLOOD_FILL = 1,
} DualConFlags;
typedef enum {
/* blocky */
DUALCON_CENTROID,
/* smooth */
DUALCON_MASS_POINT,
/* keeps sharp edges */
DUALCON_SHARP_FEATURES,
} DualConMode;
/* Usage:
*
* The three callback arguments are used for creating the output
* mesh. The alloc_output callback takes the total number of vertices
* and faces (quads) that will be in the output. It should allocate
* and return a structure to hold the output mesh. The add_vert and
* add_quad callbacks will then be called for each new vertex and
* quad, and the callback should add the new mesh elements to the
* structure.
*/
void *dualcon(const DualConInput *input_mesh,
/* callbacks for output */
DualConAllocOutput alloc_output,
DualConAddVert add_vert,
DualConAddQuad add_quad,
/* flags and settings to control the remeshing
* algorithm */
DualConFlags flags,
DualConMode mode,
float threshold,
float hermite_num,
float scale,
int depth);
#ifdef __cplusplus
}
#endif
#endif /* __DUALCON_H__ */
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