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/*
* ***** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributors: Matt Ebb
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef __BKE_OCEAN_H__
#define __BKE_OCEAN_H__
/** \file BKE_ocean.h
* \ingroup bli
*/
#ifdef __cplusplus
extern "C" {
#endif
typedef struct OceanResult {
float disp[3];
float normal[3];
float foam;
/* raw eigenvalues/vectors */
float Jminus;
float Jplus;
float Eminus[3];
float Eplus[3];
} OceanResult;
typedef struct OceanCache {
struct ImBuf **ibufs_disp;
struct ImBuf **ibufs_foam;
struct ImBuf **ibufs_norm;
const char *bakepath;
const char *relbase;
/* precalculated for time range */
float *time;
/* constant for time range */
float wave_scale;
float chop_amount;
float foam_coverage;
float foam_fade;
int start;
int end;
int duration;
int resolution_x;
int resolution_y;
int baked;
} OceanCache;
#define OCEAN_NOT_CACHED 0
#define OCEAN_CACHING 1
#define OCEAN_CACHED 2
struct Ocean *BKE_ocean_add(void);
void BKE_ocean_free_data(struct Ocean *oc);
void BKE_ocean_free(struct Ocean *oc);
void BKE_ocean_init(
struct Ocean *o, int M, int N, float Lx, float Lz, float V, float l, float A, float w, float damp,
float alignment, float depth, float time, short do_height_field, short do_chop, short do_normals, short do_jacobian, int seed);
void BKE_ocean_simulate(struct Ocean *o, float t, float scale, float chop_amount);
/* sampling the ocean surface */
float BKE_ocean_jminus_to_foam(float jminus, float coverage);
void BKE_ocean_eval_uv(struct Ocean *oc, struct OceanResult *ocr, float u, float v);
void BKE_ocean_eval_uv_catrom(struct Ocean *oc, struct OceanResult *ocr, float u, float v);
void BKE_ocean_eval_xz(struct Ocean *oc, struct OceanResult *ocr, float x, float z);
void BKE_ocean_eval_xz_catrom(struct Ocean *oc, struct OceanResult *ocr, float x, float z);
void BKE_ocean_eval_ij(struct Ocean *oc, struct OceanResult *ocr, int i, int j);
/* ocean cache handling */
struct OceanCache *BKE_ocean_init_cache(
const char *bakepath, const char *relbase,
int start, int end, float wave_scale,
float chop_amount, float foam_coverage, float foam_fade, int resolution);
void BKE_ocean_simulate_cache(struct OceanCache *och, int frame);
void BKE_ocean_bake(struct Ocean *o, struct OceanCache *och, void (*update_cb)(void *, float progress, int *cancel), void *update_cb_data);
void BKE_ocean_cache_eval_uv(struct OceanCache *och, struct OceanResult *ocr, int f, float u, float v);
void BKE_ocean_cache_eval_ij(struct OceanCache *och, struct OceanResult *ocr, int f, int i, int j);
void BKE_ocean_free_cache(struct OceanCache *och);
#ifdef __cplusplus
}
#endif
#endif
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