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Diffstat (limited to 'source/blender/blenkernel/intern/ocean.c')
| -rw-r--r-- | source/blender/blenkernel/intern/ocean.c | 1407 |
1 files changed, 1407 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/ocean.c b/source/blender/blenkernel/intern/ocean.c new file mode 100644 index 00000000000..455acd2130f --- /dev/null +++ b/source/blender/blenkernel/intern/ocean.c @@ -0,0 +1,1407 @@ +/* + * ***** 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. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * Contributors: Matt Ebb, Hamed Zaghaghi + * Based on original code by Drew Whitehouse / Houdini Ocean Toolkit + * OpenMP hints by Christian Schnellhammer + * + * ***** END GPL LICENSE BLOCK ***** + */ + + +#include <math.h> +#include <stdlib.h> + +#include <string.h> + +#include "MEM_guardedalloc.h" + +#include "DNA_scene_types.h" + +#include "BKE_image.h" +#include "BKE_ocean.h" +#include "BKE_utildefines.h" + +#include "BKE_global.h" // XXX TESTING + +#include "BLI_math_base.h" +#include "BLI_math_inline.h" +#include "BLI_rand.h" +#include "BLI_string.h" +#include "BLI_threads.h" +#include "BLI_utildefines.h" + +#include "IMB_imbuf.h" +#include "IMB_imbuf_types.h" + +#include "RE_render_ext.h" + +#ifdef WITH_OCEANSIM + +// Ocean code +#include "fftw3.h" + +#define GRAVITY 9.81f + +typedef struct Ocean { + /* ********* input parameters to the sim ********* */ + float _V; + float _l; + float _w; + float _A; + float _damp_reflections; + float _wind_alignment; + float _depth; + + float _wx; + float _wz; + + float _L; + + /* dimensions of computational grid */ + int _M; + int _N; + + /* spatial size of computational grid */ + float _Lx; + float _Lz; + + float normalize_factor; // init w + float time; + + short _do_disp_y; + short _do_normals; + short _do_chop; + short _do_jacobian; + + /* mutex for threaded texture access */ + ThreadRWMutex oceanmutex; + + /* ********* sim data arrays ********* */ + + /* two dimensional arrays of complex */ + fftw_complex *_fft_in; // init w sim w + fftw_complex *_fft_in_x; // init w sim w + fftw_complex *_fft_in_z; // init w sim w + fftw_complex *_fft_in_jxx; // init w sim w + fftw_complex *_fft_in_jzz; // init w sim w + fftw_complex *_fft_in_jxz; // init w sim w + fftw_complex *_fft_in_nx; // init w sim w + fftw_complex *_fft_in_nz; // init w sim w + fftw_complex *_htilda; // init w sim w (only once) + + /* fftw "plans" */ + fftw_plan _disp_y_plan; // init w sim r + fftw_plan _disp_x_plan; // init w sim r + fftw_plan _disp_z_plan; // init w sim r + fftw_plan _N_x_plan; // init w sim r + fftw_plan _N_z_plan; // init w sim r + fftw_plan _Jxx_plan; // init w sim r + fftw_plan _Jxz_plan; // init w sim r + fftw_plan _Jzz_plan; // init w sim r + + /* two dimensional arrays of float */ + double * _disp_y; // init w sim w via plan? + double * _N_x; // init w sim w via plan? + /*float * _N_y; all member of this array has same values, so convert this array to a float to reduce memory usage (MEM01)*/ + double _N_y; // sim w ********* can be rearranged? + double * _N_z; // init w sim w via plan? + double * _disp_x; // init w sim w via plan? + double * _disp_z; // init w sim w via plan? + + /* two dimensional arrays of float */ + /* Jacobian and minimum eigenvalue */ + double * _Jxx; // init w sim w + double * _Jzz; // init w sim w + double * _Jxz; // init w sim w + + /* one dimensional float array */ + float * _kx; // init w sim r + float * _kz; // init w sim r + + /* two dimensional complex array */ + fftw_complex * _h0; // init w sim r + fftw_complex * _h0_minus; // init w sim r + + /* two dimensional float array */ + float * _k; // init w sim r +} Ocean; + + + +static float nextfr(float min, float max) +{ + return BLI_frand()*(min-max)+max; +} + +static float gaussRand (void) +{ + float x; // Note: to avoid numerical problems with very small + float y; // numbers, we make these variables singe-precision + float length2; // floats, but later we call the double-precision log() + // and sqrt() functions instead of logf() and sqrtf(). + do + { + x = (float) (nextfr (-1, 1)); + y = (float)(nextfr (-1, 1)); + length2 = x * x + y * y; + } + while (length2 >= 1 || length2 == 0); + + return x * sqrt (-2 * log (length2) / length2); +} + +/** + * Som usefull functions + * */ +MINLINE float lerp(float a,float b,float f) +{ + return a + (b-a)*f; +} + +MINLINE float catrom(float p0,float p1,float p2,float p3,float f) +{ + return 0.5 *((2 * p1) + + (-p0 + p2) * f + + (2*p0 - 5*p1 + 4*p2 - p3) * f*f + + (-p0 + 3*p1- 3*p2 + p3) * f*f*f); +} + +MINLINE float omega(float k, float depth) +{ + return sqrt(GRAVITY*k * tanh(k*depth)); +} + +// modified Phillips spectrum +static float Ph(struct Ocean* o, float kx,float kz ) +{ + float tmp; + float k2 = kx*kx + kz*kz; + + if (k2 == 0.0) + { + return 0.0; // no DC component + } + + // damp out the waves going in the direction opposite the wind + tmp = (o->_wx * kx + o->_wz * kz)/sqrt(k2); + if (tmp < 0) + { + tmp *= o->_damp_reflections; + } + + return o->_A * exp( -1.0f / (k2*(o->_L*o->_L))) * exp(-k2 * (o->_l*o->_l)) * pow(fabs(tmp),o->_wind_alignment) / (k2*k2); +} + +static void compute_eigenstuff(struct OceanResult *ocr, float jxx,float jzz,float jxz) +{ + float a,b,qplus,qminus; + a = jxx + jzz; + b = sqrt((jxx - jzz)*(jxx - jzz) + 4 * jxz * jxz); + + ocr->Jminus = 0.5*(a-b); + ocr->Jplus = 0.5*(a+b); + + qplus = (ocr->Jplus - jxx)/jxz; + qminus = (ocr->Jminus - jxx)/jxz; + + a = sqrt(1 + qplus*qplus); + b = sqrt(1 + qminus*qminus); + + ocr->Eplus[0] = 1.0/ a; + ocr->Eplus[1] = 0.0; + ocr->Eplus[2] = qplus/a; + + ocr->Eminus[0] = 1.0/b; + ocr->Eminus[1] = 0.0; + ocr->Eminus[2] = qminus/b; +} + +/* + * instead of Complex.h + * in fftw.h "fftw_complex" typedefed as double[2] + * below you can see functions are needed to work with such complex numbers. + * */ +static void init_complex(fftw_complex cmpl, float real, float image) +{ + cmpl[0] = real; + cmpl[1] = image; +} + +#if 0 // unused +static void add_complex_f(fftw_complex res, fftw_complex cmpl, float f) +{ + res[0] = cmpl[0] + f; + res[1] = cmpl[1]; +} +#endif + +static void add_comlex_c(fftw_complex res, fftw_complex cmpl1, fftw_complex cmpl2) +{ + res[0] = cmpl1[0] + cmpl2[0]; + res[1] = cmpl1[1] + cmpl2[1]; +} + +static void mul_complex_f(fftw_complex res, fftw_complex cmpl, float f) +{ + res[0] = cmpl[0]*f; + res[1] = cmpl[1]*f; +} + +static void mul_complex_c(fftw_complex res, fftw_complex cmpl1, fftw_complex cmpl2) +{ + fftwf_complex temp; + temp[0] = cmpl1[0]*cmpl2[0]-cmpl1[1]*cmpl2[1]; + temp[1] = cmpl1[0]*cmpl2[1]+cmpl1[1]*cmpl2[0]; + res[0] = temp[0]; + res[1] = temp[1]; +} + +static float real_c(fftw_complex cmpl) +{ + return cmpl[0]; +} + +static float image_c(fftw_complex cmpl) +{ + return cmpl[1]; +} + +static void conj_complex(fftw_complex res, fftw_complex cmpl1) +{ + res[0] = cmpl1[0]; + res[1] = -cmpl1[1]; +} + +static void exp_complex(fftw_complex res, fftw_complex cmpl) +{ + float r = expf(cmpl[0]); + + res[0] = cos(cmpl[1])*r; + res[1] = sin(cmpl[1])*r; +} + +float BKE_ocean_jminus_to_foam(float jminus, float coverage) { + float foam = jminus * -0.005 + coverage; + CLAMP(foam, 0.0, 1.0); + return foam*foam; +} + +void BKE_ocean_eval_uv(struct Ocean *oc, struct OceanResult *ocr, float u,float v) +{ + int i0,i1,j0,j1; + float frac_x,frac_z; + float uu,vv; + + // first wrap the texture so 0 <= (u,v) < 1 + u = fmod(u,1.0f); + v = fmod(v,1.0f); + + if (u < 0) u += 1.0f; + if (v < 0) v += 1.0f; + + BLI_rw_mutex_lock(&oc->oceanmutex, THREAD_LOCK_READ); + + uu = u * oc->_M; + vv = v * oc->_N; + + i0 = (int)floor(uu); + j0 = (int)floor(vv); + + i1 = (i0 + 1); + j1 = (j0 + 1); + + frac_x = uu - i0; + frac_z = vv - j0; + + i0 = i0 % oc->_M; + j0 = j0 % oc->_N; + + i1 = i1 % oc->_M; + j1 = j1 % oc->_N; + + +#define BILERP(m) (lerp(lerp(m[i0*oc->_N+j0],m[i1*oc->_N+j0],frac_x),lerp(m[i0*oc->_N+j1],m[i1*oc->_N+j1],frac_x),frac_z)) + { + if (oc->_do_disp_y) { + ocr->disp[1] = BILERP(oc->_disp_y); + } + + if (oc->_do_normals) { + ocr->normal[0] = BILERP(oc->_N_x); + ocr->normal[1] = oc->_N_y/*BILERP(oc->_N_y) (MEM01)*/; + ocr->normal[2] = BILERP(oc->_N_z); + } + + if (oc->_do_chop) { + ocr->disp[0] = BILERP(oc->_disp_x); + ocr->disp[2] = BILERP(oc->_disp_z); + } else { + ocr->disp[0] = 0.0; + ocr->disp[2] = 0.0; + } + + if (oc->_do_jacobian) { + compute_eigenstuff(ocr, BILERP(oc->_Jxx),BILERP(oc->_Jzz),BILERP(oc->_Jxz)); + } + } +#undef BILERP + + BLI_rw_mutex_unlock(&oc->oceanmutex); +} + +// use catmullrom interpolation rather than linear +void BKE_ocean_eval_uv_catrom(struct Ocean *oc, struct OceanResult *ocr, float u,float v) +{ + int i0,i1,i2,i3,j0,j1,j2,j3; + float frac_x,frac_z; + float uu,vv; + + // first wrap the texture so 0 <= (u,v) < 1 + u = fmod(u,1.0f); + v = fmod(v,1.0f); + + if (u < 0) u += 1.0f; + if (v < 0) v += 1.0f; + + BLI_rw_mutex_lock(&oc->oceanmutex, THREAD_LOCK_READ); + + uu = u * oc->_M; + vv = v * oc->_N; + + i1 = (int)floor(uu); + j1 = (int)floor(vv); + + i2 = (i1 + 1); + j2 = (j1 + 1); + + frac_x = uu - i1; + frac_z = vv - j1; + + i1 = i1 % oc->_M; + j1 = j1 % oc->_N; + + i2 = i2 % oc->_M; + j2 = j2 % oc->_N; + + i0 = (i1-1); + i3 = (i2+1); + i0 = i0 < 0 ? i0 + oc->_M : i0; + i3 = i3 >= oc->_M ? i3 - oc->_M : i3; + + j0 = (j1-1); + j3 = (j2+1); + j0 = j0 < 0 ? j0 + oc->_N : j0; + j3 = j3 >= oc->_N ? j3 - oc->_N : j3; + +#define INTERP(m) catrom(catrom(m[i0*oc->_N+j0],m[i1*oc->_N+j0],m[i2*oc->_N+j0],m[i3*oc->_N+j0],frac_x),\ +catrom(m[i0*oc->_N+j1],m[i1*oc->_N+j1],m[i2*oc->_N+j1],m[i3*oc->_N+j1],frac_x),\ +catrom(m[i0*oc->_N+j2],m[i1*oc->_N+j2],m[i2*oc->_N+j2],m[i3*oc->_N+j2],frac_x),\ +catrom(m[i0*oc->_N+j3],m[i1*oc->_N+j3],m[i2*oc->_N+j3],m[i3*oc->_N+j3],frac_x),\ +frac_z) + + { + if (oc->_do_disp_y) + { + ocr->disp[1] = INTERP(oc->_disp_y) ; + } + if (oc->_do_normals) + { + ocr->normal[0] = INTERP(oc->_N_x); + ocr->normal[1] = oc->_N_y/*INTERP(oc->_N_y) (MEM01)*/; + ocr->normal[2] = INTERP(oc->_N_z); + } + if (oc->_do_chop) + { + ocr->disp[0] = INTERP(oc->_disp_x); + ocr->disp[2] = INTERP(oc->_disp_z); + } + else + { + ocr->disp[0] = 0.0; + ocr->disp[2] = 0.0; + } + + if (oc->_do_jacobian) + { + compute_eigenstuff(ocr, INTERP(oc->_Jxx),INTERP(oc->_Jzz),INTERP(oc->_Jxz)); + } + } +#undef INTERP + + BLI_rw_mutex_unlock(&oc->oceanmutex); + +} + +void BKE_ocean_eval_xz(struct Ocean *oc, struct OceanResult *ocr, float x,float z) +{ + BKE_ocean_eval_uv(oc, ocr, x/oc->_Lx,z/oc->_Lz); +} + +void BKE_ocean_eval_xz_catrom(struct Ocean *oc, struct OceanResult *ocr, float x,float z) +{ + BKE_ocean_eval_uv_catrom(oc, ocr, x/oc->_Lx,z/oc->_Lz); +} + +// note that this doesn't wrap properly for i,j < 0, but its +// not really meant for that being just a way to get the raw data out +// to save in some image format. +void BKE_ocean_eval_ij(struct Ocean *oc, struct OceanResult *ocr, int i,int j) +{ + BLI_rw_mutex_lock(&oc->oceanmutex, THREAD_LOCK_READ); + + i = abs(i) % oc->_M; + j = abs(j) % oc->_N; + + ocr->disp[1] = oc->_do_disp_y ? oc->_disp_y[i*oc->_N+j] : 0.0f; + + if (oc->_do_chop) + { + ocr->disp[0] = oc->_disp_x[i*oc->_N+j]; + ocr->disp[2] = oc->_disp_z[i*oc->_N+j]; + } + else + { + ocr->disp[0] = 0.0f; + ocr->disp[2] = 0.0f; + } + + if (oc->_do_normals) + { + ocr->normal[0] = oc->_N_x[i*oc->_N+j]; + ocr->normal[1] = oc->_N_y/*oc->_N_y[i*oc->_N+j] (MEM01)*/; + ocr->normal[2] = oc->_N_z[i*oc->_N+j]; + } + + if (oc->_do_jacobian) + { + compute_eigenstuff(ocr, oc->_Jxx[i*oc->_N+j],oc->_Jzz[i*oc->_N+j],oc->_Jxz[i*oc->_N+j]); + } + + BLI_rw_mutex_unlock(&oc->oceanmutex); +} + +void BKE_simulate_ocean(struct Ocean *o, float t, float scale, float chop_amount) +{ + int i, j; + + scale *= o->normalize_factor; + + BLI_rw_mutex_lock(&o->oceanmutex, THREAD_LOCK_WRITE); + + // compute a new htilda + #pragma omp parallel for private(i, j) + for (i = 0 ; i < o->_M ; ++i) + { + // note the <= _N/2 here, see the fftw doco about + // the mechanics of the complex->real fft storage + for ( j = 0 ; j <= o->_N / 2 ; ++j) + { + fftw_complex exp_param1; + fftw_complex exp_param2; + fftw_complex conj_param; + + + init_complex(exp_param1, 0.0, omega(o->_k[i*(1+o->_N/2)+j],o->_depth)*t); + init_complex(exp_param2, 0.0, -omega(o->_k[i*(1+o->_N/2)+j],o->_depth)*t); + exp_complex(exp_param1, exp_param1); + exp_complex(exp_param2, exp_param2); + conj_complex(conj_param, o->_h0_minus[i*o->_N+j]); + + mul_complex_c(exp_param1, o->_h0[i*o->_N+j], exp_param1); + mul_complex_c(exp_param2, conj_param, exp_param2); + + add_comlex_c(o->_htilda[i*(1+o->_N/2)+j], exp_param1, exp_param2); + mul_complex_f(o->_fft_in[i*(1+o->_N/2)+j], o->_htilda[i*(1+o->_N/2)+j], scale); + } + } + + #pragma omp parallel sections private(i, j) + { + + #pragma omp section + { + if (o->_do_disp_y) + { + // y displacement + fftw_execute(o->_disp_y_plan); + } + } // section 1 + + #pragma omp section + { + if (o->_do_chop) + { + // x displacement + for ( i = 0 ; i < o->_M ; ++i) + { + for ( j = 0 ; j <= o->_N / 2 ; ++j) + { + fftw_complex mul_param; + fftw_complex minus_i; + + init_complex(minus_i, 0.0, -1.0); + init_complex(mul_param, -scale, 0); + mul_complex_f(mul_param, mul_param, chop_amount); + mul_complex_c(mul_param, mul_param, minus_i); + mul_complex_c(mul_param, mul_param, o->_htilda[i*(1+o->_N/2)+j]); + mul_complex_f(mul_param, mul_param, (o->_k[i*(1+o->_N/2)+j] == 0.0 ? 0.0 : o->_kx[i] / o->_k[i*(1+o->_N/2)+j])); + init_complex(o->_fft_in_x[i*(1+o->_N/2)+j], real_c(mul_param), image_c(mul_param)); + } + } + fftw_execute(o->_disp_x_plan); + } + } //section 2 + + #pragma omp section + { + if (o->_do_chop) + { + // z displacement + for ( i = 0 ; i < o->_M ; ++i) + { + for ( j = 0 ; j <= o->_N / 2 ; ++j) + { + fftw_complex mul_param; + fftw_complex minus_i; + + init_complex(minus_i, 0.0, -1.0); + init_complex(mul_param, -scale, 0); + mul_complex_f(mul_param, mul_param, chop_amount); + mul_complex_c(mul_param, mul_param, minus_i); + mul_complex_c(mul_param, mul_param, o->_htilda[i*(1+o->_N/2)+j]); + mul_complex_f(mul_param, mul_param, (o->_k[i*(1+o->_N/2)+j] == 0.0 ? 0.0 : o->_kz[j] / o->_k[i*(1+o->_N/2)+j])); + init_complex(o->_fft_in_z[i*(1+o->_N/2)+j], real_c(mul_param), image_c(mul_param)); + } + } + fftw_execute(o->_disp_z_plan); + } + } // section 3 + + #pragma omp section + { + if (o->_do_jacobian) + { + // Jxx + for ( i = 0 ; i < o->_M ; ++i) + { + for ( j = 0 ; j <= o->_N / 2 ; ++j) + { + fftw_complex mul_param; + + //init_complex(mul_param, -scale, 0); + init_complex(mul_param, -1, 0); + + mul_complex_f(mul_param, mul_param, chop_amount); + mul_complex_c(mul_param, mul_param, o->_htilda[i*(1+o->_N/2)+j]); + mul_complex_f(mul_param, mul_param, (o->_k[i*(1+o->_N/2)+j] == 0.0 ? 0.0 : o->_kx[i]*o->_kx[i] / o->_k[i*(1+o->_N/2)+j])); + init_complex(o->_fft_in_jxx[i*(1+o->_N/2)+j], real_c(mul_param), image_c(mul_param)); + } + } + fftw_execute(o->_Jxx_plan); + + for ( i = 0 ; i < o->_M ; ++i) + { + for ( j = 0 ; j < o->_N ; ++j) + { + o->_Jxx[i*o->_N+j] += 1.0; + } + } + } + } // section 4 + + #pragma omp section + { + if (o->_do_jacobian) + { + // Jzz + for ( i = 0 ; i < o->_M ; ++i) + { + for ( j = 0 ; j <= o->_N / 2 ; ++j) + { + fftw_complex mul_param; + + //init_complex(mul_param, -scale, 0); + init_complex(mul_param, -1, 0); + + mul_complex_f(mul_param, mul_param, chop_amount); + mul_complex_c(mul_param, mul_param, o->_htilda[i*(1+o->_N/2)+j]); + mul_complex_f(mul_param, mul_param, (o->_k[i*(1+o->_N/2)+j] == 0.0 ? 0.0 : o->_kz[j]*o->_kz[j] / o->_k[i*(1+o->_N/2)+j])); + init_complex(o->_fft_in_jzz[i*(1+o->_N/2)+j], real_c(mul_param), image_c(mul_param)); + } + } + fftw_execute(o->_Jzz_plan); + for ( i = 0 ; i < o->_M ; ++i) + { + for ( j = 0 ; j < o->_N ; ++j) + { + o->_Jzz[i*o->_N+j] += 1.0; + } + } + } + } // section 5 + + #pragma omp section + { + if (o->_do_jacobian) + { + // Jxz + for ( i = 0 ; i < o->_M ; ++i) + { + for ( j = 0 ; j <= o->_N / 2 ; ++j) + { + fftw_complex mul_param; + + //init_complex(mul_param, -scale, 0); + init_complex(mul_param, -1, 0); + + mul_complex_f(mul_param, mul_param, chop_amount); + mul_complex_c(mul_param, mul_param, o->_htilda[i*(1+o->_N/2)+j]); + mul_complex_f(mul_param, mul_param, (o->_k[i*(1+o->_N/2)+j] == 0.0 ? 0.0 : o->_kx[i]*o->_kz[j] / o->_k[i*(1+o->_N/2)+j])); + init_complex(o->_fft_in_jxz[i*(1+o->_N/2)+j], real_c(mul_param), image_c(mul_param)); + } + } + fftw_execute(o->_Jxz_plan); + } + } // section 6 + + #pragma omp section + { + // fft normals + if (o->_do_normals) + { + for ( i = 0 ; i < o->_M ; ++i) + { + for ( j = 0 ; j <= o->_N / 2 ; ++j) + { + fftw_complex mul_param; + + init_complex(mul_param, 0.0, -1.0); + mul_complex_c(mul_param, mul_param, o->_htilda[i*(1+o->_N/2)+j]); + mul_complex_f(mul_param, mul_param, o->_kx[i]); + init_complex(o->_fft_in_nx[i*(1+o->_N/2)+j], real_c(mul_param), image_c(mul_param)); + } + } + fftw_execute(o->_N_x_plan); + + } + } // section 7 + + #pragma omp section + { + if (o->_do_normals) + { + for ( i = 0 ; i < o->_M ; ++i) + { + for ( j = 0 ; j <= o->_N / 2 ; ++j) + { + fftw_complex mul_param; + + init_complex(mul_param, 0.0, -1.0); + mul_complex_c(mul_param, mul_param, o->_htilda[i*(1+o->_N/2)+j]); + mul_complex_f(mul_param, mul_param, o->_kz[i]); + init_complex(o->_fft_in_nz[i*(1+o->_N/2)+j], real_c(mul_param), image_c(mul_param)); + } + } + fftw_execute(o->_N_z_plan); + + /*for ( i = 0 ; i < o->_M ; ++i) + { + for ( j = 0 ; j < o->_N ; ++j) + { + o->_N_y[i*o->_N+j] = 1.0f/scale; + } + } + (MEM01)*/ + o->_N_y = 1.0f/scale; + } + } // section 8 + + } // omp sections + + BLI_rw_mutex_unlock(&o->oceanmutex); +} + +static void set_height_normalize_factor(struct Ocean *oc) +{ + float res = 1.0; + float max_h = 0.0; + + int i,j; + + if (!oc->_do_disp_y) return; + + oc->normalize_factor = 1.0; + + BKE_simulate_ocean(oc, 0.0, 1.0, 0); + + BLI_rw_mutex_lock(&oc->oceanmutex, THREAD_LOCK_READ); + + for (i = 0; i < oc->_M; ++i) + { + for (j = 0; j < oc->_N; ++j) + { + if( max_h < fabsf(oc->_disp_y[i*oc->_N+j])) + { + max_h = fabsf(oc->_disp_y[i*oc->_N+j]); + } + } + } + + BLI_rw_mutex_unlock(&oc->oceanmutex); + + if (max_h == 0.0) max_h = 0.00001f; // just in case ... + + res = 1.0f / (max_h); + + oc->normalize_factor = res; +} + +struct Ocean *BKE_add_ocean(void) +{ + Ocean *oc = MEM_callocN(sizeof(Ocean), "ocean sim data"); + + BLI_rw_mutex_init(&oc->oceanmutex); + + return oc; +} + +void BKE_init_ocean(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) +{ + int i,j,ii; + + BLI_rw_mutex_lock(&o->oceanmutex, THREAD_LOCK_WRITE); + + o->_M = M; + o->_N = N; + o->_V = V; + o->_l = l; + o->_A = A; + o->_w = w; + o->_damp_reflections = 1.0 - damp; + o->_wind_alignment = alignment; + o->_depth = depth; + o->_Lx = Lx; + o->_Lz = Lz; + o->_wx = cos(w); + o->_wz = -sin(w); // wave direction + o->_L = V*V / GRAVITY; // largest wave for a given velocity V + o->time = time; + + o->_do_disp_y = do_height_field; + o->_do_normals = do_normals; + o->_do_chop = do_chop; + o->_do_jacobian = do_jacobian; + + o->_k = (float*) MEM_mallocN(M * (1+N/2) * sizeof(float), "ocean_k"); + o->_h0 = (fftw_complex*) MEM_mallocN(M * N * sizeof(fftw_complex), "ocean_h0"); + o->_h0_minus = (fftw_complex*) MEM_mallocN(M * N * sizeof(fftw_complex), "ocean_h0_minus"); + o->_kx = (float*) MEM_mallocN(o->_M * sizeof(float), "ocean_kx"); + o->_kz = (float*) MEM_mallocN(o->_N * sizeof(float), "ocean_kz"); + + // make this robust in the face of erroneous usage + if (o->_Lx == 0.0) + o->_Lx = 0.001; + + if (o->_Lz == 0.0) + o->_Lz = 0.001; + + // the +ve components and DC + for (i = 0 ; i <= o->_M/2 ; ++i) + o->_kx[i] = 2.0f * M_PI * i / o->_Lx; + + // the -ve components + for (i = o->_M-1,ii=0 ; i > o->_M/2 ; --i,++ii) + o->_kx[i] = -2.0f * M_PI * ii / o->_Lx; + + // the +ve components and DC + for (i = 0 ; i <= o->_N/2 ; ++i) + o->_kz[i] = 2.0f * M_PI * i / o->_Lz; + + // the -ve components + for (i = o->_N-1,ii=0 ; i > o->_N/2 ; --i,++ii) + o->_kz[i] = -2.0f * M_PI * ii / o->_Lz; + + // pre-calculate the k matrix + for (i = 0 ; i < o->_M ; ++i) + for (j = 0 ; j <= o->_N / 2 ; ++j) + o->_k[i*(1+o->_N/2)+j] = sqrt(o->_kx[i]*o->_kx[i] + o->_kz[j]*o->_kz[j] ); + + /*srand(seed);*/ + BLI_srand(seed); + + for (i = 0 ; i < o->_M ; ++i) + { + for (j = 0 ; j < o->_N ; ++j) + { + float r1 = gaussRand(); + float r2 = gaussRand(); + + fftw_complex r1r2; + init_complex(r1r2, r1, r2); + mul_complex_f(o->_h0[i*o->_N+j], r1r2, (float)(sqrt(Ph(o, o->_kx[i], o->_kz[j]) / 2.0f))); + mul_complex_f(o->_h0_minus[i*o->_N+j], r1r2, (float)(sqrt(Ph(o, -o->_kx[i],-o->_kz[j]) / 2.0f))); + } + } + + o->_fft_in = (fftw_complex*) MEM_mallocN(o->_M * (1+o->_N/2) * sizeof(fftw_complex), "ocean_fft_in"); + o->_htilda = (fftw_complex*) MEM_mallocN(o->_M * (1+o->_N/2) * sizeof(fftw_complex), "ocean_htilda"); + + if (o->_do_disp_y){ + o->_disp_y = (double*) MEM_mallocN(o->_M * o->_N * sizeof(double), "ocean_disp_y"); + o->_disp_y_plan = fftw_plan_dft_c2r_2d(o->_M,o->_N, o->_fft_in, o->_disp_y, FFTW_ESTIMATE); + } + + if (o->_do_normals){ + o->_fft_in_nx = (fftw_complex*) MEM_mallocN(o->_M * (1+o->_N/2) * sizeof(fftw_complex), "ocean_fft_in_nx"); + o->_fft_in_nz = (fftw_complex*) MEM_mallocN(o->_M * (1+o->_N/2) * sizeof(fftw_complex), "ocean_fft_in_nz"); + + o->_N_x = (double*) MEM_mallocN(o->_M * o->_N * sizeof(double), "ocean_N_x"); + /*o->_N_y = (float*) fftwf_malloc(o->_M * o->_N * sizeof(float)); (MEM01)*/ + o->_N_z = (double*) MEM_mallocN(o->_M * o->_N * sizeof(double), "ocean_N_z"); + + o->_N_x_plan = fftw_plan_dft_c2r_2d(o->_M,o->_N, o->_fft_in_nx, o->_N_x, FFTW_ESTIMATE); + o->_N_z_plan = fftw_plan_dft_c2r_2d(o->_M,o->_N, o->_fft_in_nz, o->_N_z, FFTW_ESTIMATE); + } + + if (o->_do_chop){ + o->_fft_in_x = (fftw_complex*) MEM_mallocN(o->_M * (1+o->_N/2) * sizeof(fftw_complex), "ocean_fft_in_x"); + o->_fft_in_z = (fftw_complex*) MEM_mallocN(o->_M * (1+o->_N/2) * sizeof(fftw_complex), "ocean_fft_in_z"); + + o->_disp_x = (double*) MEM_mallocN(o->_M * o->_N * sizeof(double), "ocean_disp_x"); + o->_disp_z = (double*) MEM_mallocN(o->_M * o->_N * sizeof(double), "ocean_disp_z"); + + o->_disp_x_plan = fftw_plan_dft_c2r_2d(o->_M,o->_N, o->_fft_in_x, o->_disp_x, FFTW_ESTIMATE); + o->_disp_z_plan = fftw_plan_dft_c2r_2d(o->_M,o->_N, o->_fft_in_z, o->_disp_z, FFTW_ESTIMATE); + } + if (o->_do_jacobian){ + o->_fft_in_jxx = (fftw_complex*) MEM_mallocN(o->_M * (1+o->_N/2) * sizeof(fftw_complex), "ocean_fft_in_jxx"); + o->_fft_in_jzz = (fftw_complex*) MEM_mallocN(o->_M * (1+o->_N/2) * sizeof(fftw_complex), "ocean_fft_in_jzz"); + o->_fft_in_jxz = (fftw_complex*) MEM_mallocN(o->_M * (1+o->_N/2) * sizeof(fftw_complex), "ocean_fft_in_jxz"); + + o->_Jxx = (double*) MEM_mallocN(o->_M * o->_N * sizeof(double), "ocean_Jxx"); + o->_Jzz = (double*) MEM_mallocN(o->_M * o->_N * sizeof(double), "ocean_Jzz"); + o->_Jxz = (double*) MEM_mallocN(o->_M * o->_N * sizeof(double), "ocean_Jxz"); + + o->_Jxx_plan = fftw_plan_dft_c2r_2d(o->_M,o->_N, o->_fft_in_jxx, o->_Jxx, FFTW_ESTIMATE); + o->_Jzz_plan = fftw_plan_dft_c2r_2d(o->_M,o->_N, o->_fft_in_jzz, o->_Jzz, FFTW_ESTIMATE); + o->_Jxz_plan = fftw_plan_dft_c2r_2d(o->_M,o->_N, o->_fft_in_jxz, o->_Jxz, FFTW_ESTIMATE); + } + + BLI_rw_mutex_unlock(&o->oceanmutex); + + set_height_normalize_factor(o); + +} + +void BKE_free_ocean_data(struct Ocean *oc) +{ + if(!oc) return; + + BLI_rw_mutex_lock(&oc->oceanmutex, THREAD_LOCK_WRITE); + + if (oc->_do_disp_y) + { + fftw_destroy_plan(oc->_disp_y_plan); + MEM_freeN(oc->_disp_y); + } + + if (oc->_do_normals) + { + MEM_freeN(oc->_fft_in_nx); + MEM_freeN(oc->_fft_in_nz); + fftw_destroy_plan(oc->_N_x_plan); + fftw_destroy_plan(oc->_N_z_plan); + MEM_freeN(oc->_N_x); + /*fftwf_free(oc->_N_y); (MEM01)*/ + MEM_freeN(oc->_N_z); + } + + if (oc->_do_chop) + { + MEM_freeN(oc->_fft_in_x); + MEM_freeN(oc->_fft_in_z); + fftw_destroy_plan(oc->_disp_x_plan); + fftw_destroy_plan(oc->_disp_z_plan); + MEM_freeN(oc->_disp_x); + MEM_freeN(oc->_disp_z); + } + + if (oc->_do_jacobian) + { + MEM_freeN(oc->_fft_in_jxx); + MEM_freeN(oc->_fft_in_jzz); + MEM_freeN(oc->_fft_in_jxz); + fftw_destroy_plan(oc->_Jxx_plan); + fftw_destroy_plan(oc->_Jzz_plan); + fftw_destroy_plan(oc->_Jxz_plan); + MEM_freeN(oc->_Jxx); + MEM_freeN(oc->_Jzz); + MEM_freeN(oc->_Jxz); + } + + if (oc->_fft_in) + MEM_freeN(oc->_fft_in); + + /* check that ocean data has been initialised */ + if (oc->_htilda) { + MEM_freeN(oc->_htilda); + MEM_freeN(oc->_k); + MEM_freeN(oc->_h0); + MEM_freeN(oc->_h0_minus); + MEM_freeN(oc->_kx); + MEM_freeN(oc->_kz); + } + + BLI_rw_mutex_unlock(&oc->oceanmutex); +} + +void BKE_free_ocean(struct Ocean *oc) +{ + if(!oc) return; + + BKE_free_ocean_data(oc); + BLI_rw_mutex_end(&oc->oceanmutex); + + MEM_freeN(oc); +} + +#undef GRAVITY + + +/* ********* Baking/Caching ********* */ + + +#define CACHE_TYPE_DISPLACE 1 +#define CACHE_TYPE_FOAM 2 +#define CACHE_TYPE_NORMAL 3 + +static void cache_filename(char *string, char *path, int frame, int type) +{ + char *cachepath=NULL; + + switch(type) { + case CACHE_TYPE_FOAM: + cachepath = BLI_strdupcat(path, "foam_"); + break; + case CACHE_TYPE_NORMAL: + cachepath = BLI_strdupcat(path, "normal_"); + break; + case CACHE_TYPE_DISPLACE: + default: + cachepath = BLI_strdupcat(path, "disp_"); + break; + } + + BKE_makepicstring(string, cachepath, frame, R_OPENEXR, 1, TRUE); + + MEM_freeN(cachepath); +} + +void BKE_free_ocean_cache(struct OceanCache *och) +{ + int i, f=0; + + if (!och) return; + + if (och->ibufs_disp) { + for (i=och->start, f=0; i<=och->end; i++, f++) + { + if (och->ibufs_disp[f]) { + IMB_freeImBuf(och->ibufs_disp[f]); + } + } + MEM_freeN(och->ibufs_disp); + } + + if (och->ibufs_foam) { + for (i=och->start, f=0; i<=och->end; i++, f++) + { + if (och->ibufs_foam[f]) { + IMB_freeImBuf(och->ibufs_foam[f]); + } + } + MEM_freeN(och->ibufs_foam); + } + + if (och->ibufs_norm) { + for (i=och->start, f=0; i<=och->end; i++, f++) + { + if (och->ibufs_norm[f]) { + IMB_freeImBuf(och->ibufs_norm[f]); + } + } + MEM_freeN(och->ibufs_norm); + } + + if (och->time) + MEM_freeN(och->time); + MEM_freeN(och); +} + +void BKE_ocean_cache_eval_uv(struct OceanCache *och, struct OceanResult *ocr, int f, float u, float v) +{ + int res_x = och->resolution_x; + int res_y = och->resolution_y; + float result[4]; + + u = fmod(u, 1.0); + v = fmod(v, 1.0); + + if (u < 0) u += 1.0f; + if (v < 0) v += 1.0f; + + if (och->ibufs_disp[f]) { + ibuf_sample(och->ibufs_disp[f], u, v, (1.0/(float)res_x), (1.0/(float)res_y), result); + ocr->disp[0] = result[0]; + ocr->disp[1] = result[1]; + ocr->disp[2] = result[2]; + } + + if (och->ibufs_foam[f]) { + ibuf_sample(och->ibufs_foam[f], u, v, (1.0/(float)res_x), (1.0/(float)res_y), result); + ocr->foam = result[0]; + } + + if (och->ibufs_norm[f]) { + ibuf_sample(och->ibufs_norm[f], u, v, (1.0/(float)res_x), (1.0/(float)res_y), result); + ocr->normal[0] = result[0]; + ocr->normal[1] = result[1]; + ocr->normal[2] = result[2]; + } +} + +void BKE_ocean_cache_eval_ij(struct OceanCache *och, struct OceanResult *ocr, int f, int i, int j) +{ + int res_x = och->resolution_x; + int res_y = och->resolution_y; + + i = abs(i) % res_x; + j = abs(j) % res_y; + + if (och->ibufs_disp[f]) { + ocr->disp[0] = och->ibufs_disp[f]->rect_float[4*(res_x*j + i) + 0]; + ocr->disp[1] = och->ibufs_disp[f]->rect_float[4*(res_x*j + i) + 1]; + ocr->disp[2] = och->ibufs_disp[f]->rect_float[4*(res_x*j + i) + 2]; + } + + if (och->ibufs_foam[f]) { + ocr->foam = och->ibufs_foam[f]->rect_float[4*(res_x*j + i) + 0]; + } + + if (och->ibufs_norm[f]) { + ocr->normal[0] = och->ibufs_norm[f]->rect_float[4*(res_x*j + i) + 0]; + ocr->normal[1] = och->ibufs_norm[f]->rect_float[4*(res_x*j + i) + 1]; + ocr->normal[2] = och->ibufs_norm[f]->rect_float[4*(res_x*j + i) + 2]; + } +} + +struct OceanCache *BKE_init_ocean_cache(char *bakepath, int start, int end, float wave_scale, + float chop_amount, float foam_coverage, float foam_fade, int resolution) +{ + OceanCache *och = MEM_callocN(sizeof(OceanCache), "ocean cache data"); + + och->bakepath = bakepath; + och->start = start; + och->end = end; + och->duration = (end - start) + 1; + och->wave_scale = wave_scale; + och->chop_amount = chop_amount; + och->foam_coverage = foam_coverage; + och->foam_fade = foam_fade; + och->resolution_x = resolution*resolution; + och->resolution_y = resolution*resolution; + + och->ibufs_disp = MEM_callocN(sizeof(ImBuf *)*och->duration, "displacement imbuf pointer array"); + och->ibufs_foam = MEM_callocN(sizeof(ImBuf *)*och->duration, "foam imbuf pointer array"); + och->ibufs_norm = MEM_callocN(sizeof(ImBuf *)*och->duration, "normal imbuf pointer array"); + + och->time = NULL; + + return och; +} + +void BKE_simulate_ocean_cache(struct OceanCache *och, int frame) +{ + char string[FILE_MAX]; + int f = frame; + + /* ibufs array is zero based, but filenames are based on frame numbers */ + /* still need to clamp frame numbers to valid range of images on disk though */ + CLAMP(frame, och->start, och->end); + f = frame - och->start; // shift to 0 based + + /* if image is already loaded in mem, return */ + if (och->ibufs_disp[f] != NULL ) return; + + + cache_filename(string, och->bakepath, frame, CACHE_TYPE_DISPLACE); + och->ibufs_disp[f] = IMB_loadiffname(string, 0); + //if (och->ibufs_disp[f] == NULL) printf("error loading %s \n", string); + //else printf("loaded cache %s \n", string); + + cache_filename(string, och->bakepath, frame, CACHE_TYPE_FOAM); + och->ibufs_foam[f] = IMB_loadiffname(string, 0); + //if (och->ibufs_foam[f] == NULL) printf("error loading %s \n", string); + //else printf("loaded cache %s \n", string); + + cache_filename(string, och->bakepath, frame, CACHE_TYPE_NORMAL); + och->ibufs_norm[f] = IMB_loadiffname(string, 0); + //if (och->ibufs_norm[f] == NULL) printf("error loading %s \n", string); + //else printf("loaded cache %s \n", string); +} + + +void BKE_bake_ocean(struct Ocean *o, struct OceanCache *och, void (*update_cb)(void *, float progress, int *cancel), void *update_cb_data) +{ + int f, i=0, x, y, cancel=0; + float progress; + OceanResult ocr; + ImBuf *ibuf_foam, *ibuf_disp, *ibuf_normal; + float *prev_foam; + int res_x = och->resolution_x; + int res_y = och->resolution_y; + char string[FILE_MAX]; + + if (!o) return; + + prev_foam = MEM_callocN(res_x*res_y*sizeof(float), "previous frame foam bake data"); + + BLI_srand(0); + + for (f=och->start, i=0; f<=och->end; f++, i++) { + + /* create a new imbuf to store image for this frame */ + ibuf_foam = IMB_allocImBuf(res_x, res_y, 32, IB_rectfloat); + ibuf_disp = IMB_allocImBuf(res_x, res_y, 32, IB_rectfloat); + ibuf_normal = IMB_allocImBuf(res_x, res_y, 32, IB_rectfloat); + + ibuf_disp->profile = ibuf_foam->profile = ibuf_normal->profile = IB_PROFILE_LINEAR_RGB; + + BKE_simulate_ocean(o, och->time[i], och->wave_scale, och->chop_amount); + + /* add new foam */ + for (y=0; y < res_y; y++) { + for (x=0; x < res_x; x++) { + float r, pr=0.0, foam_result; + float neg_disp, neg_eplus; + + BKE_ocean_eval_ij(o, &ocr, x, y); + + normalize_v3(ocr.normal); + + /* foam */ + ocr.foam = BKE_ocean_jminus_to_foam(ocr.Jminus, och->foam_coverage); + + /* accumulate previous value for this cell */ + if (i>0) + pr = prev_foam[res_x*y + x]; + + r = BLI_frand(); // randomly reduce foam + + //pr = pr * och->foam_fade; // overall fade + + // remember ocean coord sys is Y up! + // break up the foam where height (Y) is low (wave valley), + // and X and Z displacement is greatest + + /* + vec[0] = ocr.disp[0]; + vec[1] = ocr.disp[2]; + hor_stretch = len_v2(vec); + CLAMP(hor_stretch, 0.0, 1.0); + */ + + neg_disp = ocr.disp[1]<0.0?1.0+ocr.disp[1]:1.0; + neg_disp = neg_disp<0.0?0.0:neg_disp; + + neg_eplus = ocr.Eplus[2]<0.0?1.0+ocr.Eplus[2]:1.0; + neg_eplus = neg_eplus<0.0?0.0:neg_eplus; + + //if (ocr.disp[1] < 0.0 || r > och->foam_fade) + // pr *= och->foam_fade; + + + //pr = pr * (1.0 - hor_stretch) * ocr.disp[1]; + //pr = pr * neg_disp * neg_eplus; + + if (pr < 1.0) pr *=pr; + + pr *= och->foam_fade * (0.75+neg_eplus*0.25); + + + foam_result = pr + ocr.foam; + + prev_foam[res_x*y + x] = foam_result; + + /* add to the image */ + ibuf_disp->rect_float[4*(res_x*y + x) + 0] = ocr.disp[0]; + ibuf_disp->rect_float[4*(res_x*y + x) + 1] = ocr.disp[1]; + ibuf_disp->rect_float[4*(res_x*y + x) + 2] = ocr.disp[2]; + ibuf_disp->rect_float[4*(res_x*y + x) + 3] = 1.0; + + if (o->_do_jacobian) { + ibuf_foam->rect_float[4*(res_x*y + x) + 0] = foam_result; + ibuf_foam->rect_float[4*(res_x*y + x) + 1] = foam_result; + ibuf_foam->rect_float[4*(res_x*y + x) + 2] = foam_result; + ibuf_foam->rect_float[4*(res_x*y + x) + 3] = 1.0; + } + + if (o->_do_normals) { + ibuf_normal->rect_float[4*(res_x*y + x) + 0] = ocr.normal[0]; + ibuf_normal->rect_float[4*(res_x*y + x) + 1] = ocr.normal[1]; + ibuf_normal->rect_float[4*(res_x*y + x) + 2] = ocr.normal[2]; + ibuf_normal->rect_float[4*(res_x*y + x) + 3] = 1.0; + } + + } + } + + /* write the images */ + cache_filename(string, och->bakepath, f, CACHE_TYPE_DISPLACE); + if(0 == BKE_write_ibuf(ibuf_disp, string, R_OPENEXR, R_OPENEXR_HALF, 2)) // 2 == ZIP exr codec + printf("Cannot save Displacement File Output to %s\n", string); + + if (o->_do_jacobian) { + cache_filename(string, och->bakepath, f, CACHE_TYPE_FOAM); + if(0 == BKE_write_ibuf(ibuf_foam, string, R_OPENEXR, R_OPENEXR_HALF, 2)) // 2 == ZIP exr codec + printf("Cannot save Foam File Output to %s\n", string); + } + + if (o->_do_normals) { + cache_filename(string, och->bakepath, f, CACHE_TYPE_NORMAL); + if(0 == BKE_write_ibuf(ibuf_normal, string, R_OPENEXR, R_OPENEXR_HALF, 2)) // 2 == ZIP exr codec + printf("Cannot save Normal File Output to %s\n", string); + } + + IMB_freeImBuf(ibuf_disp); + IMB_freeImBuf(ibuf_foam); + IMB_freeImBuf(ibuf_normal); + + progress = (f - och->start) / (float)och->duration; + + update_cb(update_cb_data, progress, &cancel); + + if (cancel) { + MEM_freeN(prev_foam); + return; + } + } + + MEM_freeN(prev_foam); + och->baked = 1; +} + +#else // WITH_OCEANSIM + +/* stub */ +typedef struct Ocean { +} Ocean; + + +float BKE_ocean_jminus_to_foam(float UNUSED(jminus), float UNUSED(coverage)) { + return 0.0f; +} + +void BKE_ocean_eval_uv(struct Ocean *UNUSED(oc), struct OceanResult *UNUSED(ocr), float UNUSED(u),float UNUSED(v)) +{ +} + +// use catmullrom interpolation rather than linear +void BKE_ocean_eval_uv_catrom(struct Ocean *UNUSED(oc), struct OceanResult *UNUSED(ocr), float UNUSED(u),float UNUSED(v)) +{ +} + +void BKE_ocean_eval_xz(struct Ocean *UNUSED(oc), struct OceanResult *UNUSED(ocr), float UNUSED(x),float UNUSED(z)) +{ +} + +void BKE_ocean_eval_xz_catrom(struct Ocean *UNUSED(oc), struct OceanResult *UNUSED(ocr), float UNUSED(x),float UNUSED(z)) +{ +} + +void BKE_ocean_eval_ij(struct Ocean *UNUSED(oc), struct OceanResult *UNUSED(ocr), int UNUSED(i),int UNUSED(j)) +{ +} + +void BKE_simulate_ocean(struct Ocean *UNUSED(o), float UNUSED(t), float UNUSED(scale), float UNUSED(chop_amount)) +{ +} + +struct Ocean *BKE_add_ocean(void) +{ + Ocean *oc = MEM_callocN(sizeof(Ocean), "ocean sim data"); + + return oc; +} + +void BKE_init_ocean(struct Ocean* UNUSED(o), int UNUSED(M),int UNUSED(N), float UNUSED(Lx), float UNUSED(Lz), float UNUSED(V), float UNUSED(l), float UNUSED(A), float UNUSED(w), float UNUSED(damp), + float UNUSED(alignment), float UNUSED(depth), float UNUSED(time), short UNUSED(do_height_field), short UNUSED(do_chop), short UNUSED(do_normals), short UNUSED(do_jacobian), int UNUSED(seed)) +{ +} + +void BKE_free_ocean_data(struct Ocean *UNUSED(oc)) +{ +} + +void BKE_free_ocean(struct Ocean *oc) +{ + if(!oc) return; + MEM_freeN(oc); +} + + +/* ********* Baking/Caching ********* */ + + +void BKE_free_ocean_cache(struct OceanCache *och) +{ + if (!och) return; + + MEM_freeN(och); +} + +void BKE_ocean_cache_eval_uv(struct OceanCache *UNUSED(och), struct OceanResult *UNUSED(ocr), int UNUSED(f), float UNUSED(u), float UNUSED(v)) +{ +} + +void BKE_ocean_cache_eval_ij(struct OceanCache *UNUSED(och), struct OceanResult *UNUSED(ocr), int UNUSED(f), int UNUSED(i), int UNUSED(j)) +{ +} + +struct OceanCache *BKE_init_ocean_cache(char *UNUSED(bakepath), int UNUSED(start), int UNUSED(end), float UNUSED(wave_scale), + float UNUSED(chop_amount), float UNUSED(foam_coverage), float UNUSED(foam_fade), int UNUSED(resolution)) +{ + OceanCache *och = MEM_callocN(sizeof(OceanCache), "ocean cache data"); + + return och; +} + +void BKE_simulate_ocean_cache(struct OceanCache *UNUSED(och), int UNUSED(frame)) +{ +} + +void BKE_bake_ocean(struct Ocean *UNUSED(o), struct OceanCache *UNUSED(och), void (*update_cb)(void *, float progress, int *cancel), void *UNUSED(update_cb_data)) +{ + /* unused */ + (void)update_cb; +} +#endif // WITH_OCEANSIM |