1 /* 2 * This program is free software; you can redistribute it and/or 3 * modify it under the terms of the GNU General Public License 4 * as published by the Free Software Foundation; either version 2 5 * of the License, or (at your option) any later version. 6 * 7 * This program is distributed in the hope that it will be useful, 8 * but WITHOUT ANY WARRANTY; without even the implied warranty of 9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 10 * GNU General Public License for more details. 11 * 12 * You should have received a copy of the GNU General Public License 13 * along with this program; if not, write to the Free Software Foundation, 14 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 15 */ 16 17 #pragma once 18 19 #include <stdbool.h> 20 21 /** \file 22 * \ingroup bli 23 */ 24 25 #ifdef __cplusplus 26 extern "C" { 27 #endif 28 29 struct OceanModifierData; 30 31 typedef struct OceanResult { 32 float disp[3]; 33 float normal[3]; 34 float foam; 35 36 /* raw eigenvalues/vectors */ 37 float Jminus; 38 float Jplus; 39 float Eminus[3]; 40 float Eplus[3]; 41 } OceanResult; 42 43 typedef struct OceanCache { 44 struct ImBuf **ibufs_disp; 45 struct ImBuf **ibufs_foam; 46 struct ImBuf **ibufs_norm; 47 /* spray is Eplus */ 48 struct ImBuf **ibufs_spray; 49 /* spray_inverse is Eminus */ 50 struct ImBuf **ibufs_spray_inverse; 51 52 const char *bakepath; 53 const char *relbase; 54 55 /* precalculated for time range */ 56 float *time; 57 58 /* constant for time range */ 59 float wave_scale; 60 float chop_amount; 61 float foam_coverage; 62 float foam_fade; 63 64 int start; 65 int end; 66 int duration; 67 int resolution_x; 68 int resolution_y; 69 70 int baked; 71 } OceanCache; 72 73 struct Ocean *BKE_ocean_add(void); 74 void BKE_ocean_free_data(struct Ocean *oc); 75 void BKE_ocean_free(struct Ocean *oc); 76 bool BKE_ocean_ensure(struct OceanModifierData *omd, const int resolution); 77 void BKE_ocean_init_from_modifier(struct Ocean *ocean, 78 struct OceanModifierData const *omd, 79 const int resolution); 80 81 void BKE_ocean_init(struct Ocean *o, 82 int M, 83 int N, 84 float Lx, 85 float Lz, 86 float V, 87 float l, 88 float A, 89 float w, 90 float damp, 91 float alignment, 92 float depth, 93 float time, 94 int spectrum, 95 float fetch_jonswap, 96 float sharpen_peak_jonswap, 97 short do_height_field, 98 short do_chop, 99 short do_spray, 100 short do_normals, 101 short do_jacobian, 102 int seed); 103 void BKE_ocean_simulate(struct Ocean *o, float t, float scale, float chop_amount); 104 105 /* sampling the ocean surface */ 106 float BKE_ocean_jminus_to_foam(float jminus, float coverage); 107 void BKE_ocean_eval_uv(struct Ocean *oc, struct OceanResult *ocr, float u, float v); 108 void BKE_ocean_eval_uv_catrom(struct Ocean *oc, struct OceanResult *ocr, float u, float v); 109 void BKE_ocean_eval_xz(struct Ocean *oc, struct OceanResult *ocr, float x, float z); 110 void BKE_ocean_eval_xz_catrom(struct Ocean *oc, struct OceanResult *ocr, float x, float z); 111 void BKE_ocean_eval_ij(struct Ocean *oc, struct OceanResult *ocr, int i, int j); 112 113 /* ocean cache handling */ 114 struct OceanCache *BKE_ocean_init_cache(const char *bakepath, 115 const char *relbase, 116 int start, 117 int end, 118 float wave_scale, 119 float chop_amount, 120 float foam_coverage, 121 float foam_fade, 122 int resolution); 123 void BKE_ocean_simulate_cache(struct OceanCache *och, int frame); 124 125 void BKE_ocean_bake(struct Ocean *o, 126 struct OceanCache *och, 127 void (*update_cb)(void *, float progress, int *cancel), 128 void *update_cb_data); 129 void BKE_ocean_cache_eval_uv( 130 struct OceanCache *och, struct OceanResult *ocr, int f, float u, float v); 131 void BKE_ocean_cache_eval_ij(struct OceanCache *och, struct OceanResult *ocr, int f, int i, int j); 132 133 void BKE_ocean_free_cache(struct OceanCache *och); 134 void BKE_ocean_free_modifier_cache(struct OceanModifierData *omd); 135 136 /* ocean_spectrum.c */ 137 float BLI_ocean_spectrum_piersonmoskowitz(const struct Ocean *oc, const float kx, const float kz); 138 float BLI_ocean_spectrum_texelmarsenarsloe(const struct Ocean *oc, const float kx, const float kz); 139 float BLI_ocean_spectrum_jonswap(const struct Ocean *oc, const float kx, const float kz); 140 141 #ifdef __cplusplus 142 } 143 #endif 144