diff options
Diffstat (limited to 'source/blender/blenkernel/intern/particle_child.c')
| -rw-r--r-- | source/blender/blenkernel/intern/particle_child.c | 739 |
1 files changed, 0 insertions, 739 deletions
diff --git a/source/blender/blenkernel/intern/particle_child.c b/source/blender/blenkernel/intern/particle_child.c deleted file mode 100644 index ec5f73f87ce..00000000000 --- a/source/blender/blenkernel/intern/particle_child.c +++ /dev/null @@ -1,739 +0,0 @@ -/* - * ***** 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) Blender Foundation - * All rights reserved. - * - * The Original Code is: all of this file. - * - * Contributor(s): Lukas Toenne - * - * ***** END GPL LICENSE BLOCK ***** - */ - -/** \file blender/blenkernel/intern/particle_child.c - * \ingroup bke - */ - -#include "BLI_math.h" -#include "BLI_noise.h" - -#include "DNA_material_types.h" - -#include "BKE_colortools.h" -#include "BKE_particle.h" - -struct Material; - -void do_kink(ParticleKey *state, const float par_co[3], const float par_vel[3], const float par_rot[4], float time, float freq, float shape, float amplitude, float flat, - short type, short axis, float obmat[4][4], int smooth_start); -float do_clump(ParticleKey *state, const float par_co[3], float time, const float orco_offset[3], float clumpfac, float clumppow, float pa_clump, - bool use_clump_noise, float clump_noise_size, CurveMapping *clumpcurve); -void do_child_modifiers(ParticleThreadContext *ctx, ParticleSimulationData *sim, - ParticleTexture *ptex, const float par_co[3], const float par_vel[3], const float par_rot[4], const float par_orco[3], - ChildParticle *cpa, const float orco[3], float mat[4][4], ParticleKey *state, float t); - -static void get_strand_normal(Material *ma, const float surfnor[3], float surfdist, float nor[3]) -{ - float cross[3], nstrand[3], vnor[3], blend; - - if (!((ma->mode & MA_STR_SURFDIFF) || (ma->strand_surfnor > 0.0f))) - return; - - if (ma->mode & MA_STR_SURFDIFF) { - cross_v3_v3v3(cross, surfnor, nor); - cross_v3_v3v3(nstrand, nor, cross); - - blend = dot_v3v3(nstrand, surfnor); - CLAMP(blend, 0.0f, 1.0f); - - interp_v3_v3v3(vnor, nstrand, surfnor, blend); - normalize_v3(vnor); - } - else { - copy_v3_v3(vnor, nor); - } - - if (ma->strand_surfnor > 0.0f) { - if (ma->strand_surfnor > surfdist) { - blend = (ma->strand_surfnor - surfdist) / ma->strand_surfnor; - interp_v3_v3v3(vnor, vnor, surfnor, blend); - normalize_v3(vnor); - } - } - - copy_v3_v3(nor, vnor); -} - -/* ------------------------------------------------------------------------- */ - -typedef struct ParticlePathIterator { - ParticleCacheKey *key; - int index; - float time; - - ParticleCacheKey *parent_key; - float parent_rotation[4]; -} ParticlePathIterator; - -static void psys_path_iter_get(ParticlePathIterator *iter, ParticleCacheKey *keys, int totkeys, - ParticleCacheKey *parent, int index) -{ - BLI_assert(index >= 0 && index < totkeys); - - iter->key = keys + index; - iter->index = index; - iter->time = (float)index / (float)(totkeys - 1); - - if (parent) { - iter->parent_key = parent + index; - if (index > 0) - mul_qt_qtqt(iter->parent_rotation, iter->parent_key->rot, parent->rot); - else - copy_qt_qt(iter->parent_rotation, parent->rot); - } - else { - iter->parent_key = NULL; - unit_qt(iter->parent_rotation); - } -} - -typedef struct ParticlePathModifier { - struct ParticlePathModifier *next, *prev; - - void (*apply)(ParticleCacheKey *keys, int totkeys, ParticleCacheKey *parent_keys); -} ParticlePathModifier; - -/* ------------------------------------------------------------------------- */ - -static void do_kink_spiral_deform(ParticleKey *state, const float dir[3], const float kink[3], - float time, float freq, float shape, float amplitude, - const float spiral_start[3]) -{ - float result[3]; - - CLAMP(time, 0.f, 1.f); - - copy_v3_v3(result, state->co); - - { - /* Creates a logarithmic spiral: - * r(theta) = a * exp(b * theta) - * - * The "density" parameter b is defined by the shape parameter - * and goes up to the Golden Spiral for 1.0 - * http://en.wikipedia.org/wiki/Golden_spiral - */ - const float b = shape * (1.0f + sqrtf(5.0f)) / (float)M_PI * 0.25f; - /* angle of the spiral against the curve (rotated opposite to make a smooth transition) */ - const float start_angle = ((b != 0.0f) ? atanf(1.0f / b) : - (float)-M_PI_2) + (b > 0.0f ? -(float)M_PI_2 : (float)M_PI_2); - - float spiral_axis[3], rot[3][3]; - float vec[3]; - - float theta = freq * time * 2.0f * (float)M_PI; - float radius = amplitude * expf(b * theta); - - /* a bit more intuitive than using negative frequency for this */ - if (amplitude < 0.0f) - theta = -theta; - - cross_v3_v3v3(spiral_axis, dir, kink); - normalize_v3(spiral_axis); - - mul_v3_v3fl(vec, kink, -radius); - - axis_angle_normalized_to_mat3(rot, spiral_axis, theta); - mul_m3_v3(rot, vec); - - madd_v3_v3fl(vec, kink, amplitude); - - axis_angle_normalized_to_mat3(rot, spiral_axis, -start_angle); - mul_m3_v3(rot, vec); - - add_v3_v3v3(result, spiral_start, vec); - } - - copy_v3_v3(state->co, result); -} - -static void do_kink_spiral(ParticleThreadContext *ctx, ParticleTexture *ptex, const float parent_orco[3], - ChildParticle *cpa, const float orco[3], float hairmat[4][4], - ParticleCacheKey *keys, ParticleCacheKey *parent_keys, int *r_totkeys, float *r_max_length) -{ - struct ParticleSettings *part = ctx->sim.psys->part; - const int seed = ctx->sim.psys->child_seed + (int)(cpa - ctx->sim.psys->child); - const int totkeys = ctx->segments + 1; - const int extrakeys = ctx->extra_segments; - - float kink_amp_random = part->kink_amp_random; - float kink_amp = part->kink_amp * (1.0f - kink_amp_random * psys_frand(ctx->sim.psys, 93541 + seed)); - float kink_freq = part->kink_freq; - float kink_shape = part->kink_shape; - float kink_axis_random = part->kink_axis_random; - float rough1 = part->rough1; - float rough2 = part->rough2; - float rough_end = part->rough_end; - - ParticlePathIterator iter; - ParticleCacheKey *key; - int k; - - float dir[3]; - float spiral_start[3] = {0.0f, 0.0f, 0.0f}; - float spiral_start_time = 0.0f; - float spiral_par_co[3] = {0.0f, 0.0f, 0.0f}; - float spiral_par_vel[3] = {0.0f, 0.0f, 0.0f}; - float spiral_par_rot[4] = {1.0f, 0.0f, 0.0f, 0.0f}; - float totlen; - float cut_time; - int start_index = 0, end_index = 0; - float kink_base[3]; - - if (ptex) { - kink_amp *= ptex->kink_amp; - kink_freq *= ptex->kink_freq; - rough1 *= ptex->rough1; - rough2 *= ptex->rough2; - rough_end *= ptex->roughe; - } - - cut_time = (totkeys - 1) * ptex->length; - zero_v3(spiral_start); - - for (k = 0, key = keys; k < totkeys-1; k++, key++) { - if ((float)(k + 1) >= cut_time) { - float fac = cut_time - (float)k; - ParticleCacheKey *par = parent_keys + k; - - start_index = k + 1; - end_index = start_index + extrakeys; - - spiral_start_time = ((float)k + fac) / (float)(totkeys - 1); - interp_v3_v3v3(spiral_start, key->co, (key+1)->co, fac); - - interp_v3_v3v3(spiral_par_co, par->co, (par+1)->co, fac); - interp_v3_v3v3(spiral_par_vel, par->vel, (par+1)->vel, fac); - interp_qt_qtqt(spiral_par_rot, par->rot, (par+1)->rot, fac); - - break; - } - } - - zero_v3(dir); - - zero_v3(kink_base); - kink_base[part->kink_axis] = 1.0f; - mul_mat3_m4_v3(ctx->sim.ob->obmat, kink_base); - - for (k = 0, key = keys; k < end_index; k++, key++) { - float par_time; - float *par_co, *par_vel, *par_rot; - - psys_path_iter_get(&iter, keys, end_index, NULL, k); - if (k < start_index) { - sub_v3_v3v3(dir, (key+1)->co, key->co); - normalize_v3(dir); - - par_time = (float)k / (float)(totkeys - 1); - par_co = parent_keys[k].co; - par_vel = parent_keys[k].vel; - par_rot = parent_keys[k].rot; - } - else { - float spiral_time = (float)(k - start_index) / (float)(extrakeys-1); - float kink[3], tmp[3]; - - /* use same time value for every point on the spiral */ - par_time = spiral_start_time; - par_co = spiral_par_co; - par_vel = spiral_par_vel; - par_rot = spiral_par_rot; - - project_v3_v3v3(tmp, kink_base, dir); - sub_v3_v3v3(kink, kink_base, tmp); - normalize_v3(kink); - - if (kink_axis_random > 0.0f) { - float a = kink_axis_random * (psys_frand(ctx->sim.psys, 7112 + seed) * 2.0f - 1.0f) * (float)M_PI; - float rot[3][3]; - - axis_angle_normalized_to_mat3(rot, dir, a); - mul_m3_v3(rot, kink); - } - - do_kink_spiral_deform((ParticleKey *)key, dir, kink, spiral_time, kink_freq, kink_shape, kink_amp, spiral_start); - } - - /* apply different deformations to the child path */ - do_child_modifiers(ctx, &ctx->sim, ptex, par_co, par_vel, par_rot, parent_orco, cpa, orco, hairmat, (ParticleKey *)key, par_time); - } - - totlen = 0.0f; - for (k = 0, key = keys; k < end_index-1; k++, key++) - totlen += len_v3v3((key+1)->co, key->co); - - *r_totkeys = end_index; - *r_max_length = totlen; -} - -/* ------------------------------------------------------------------------- */ - -static bool check_path_length(int k, ParticleCacheKey *keys, ParticleCacheKey *key, float max_length, float step_length, float *cur_length, float dvec[3]) -{ - if (*cur_length + step_length > max_length) { - sub_v3_v3v3(dvec, key->co, (key-1)->co); - mul_v3_fl(dvec, (max_length - *cur_length) / step_length); - add_v3_v3v3(key->co, (key-1)->co, dvec); - keys->segments = k; - /* something over the maximum step value */ - return false; - } - else { - *cur_length += step_length; - return true; - } -} - -void psys_apply_child_modifiers(ParticleThreadContext *ctx, struct ListBase *modifiers, - ChildParticle *cpa, ParticleTexture *ptex, const float orco[3], const float ornor[3], float hairmat[4][4], - ParticleCacheKey *keys, ParticleCacheKey *parent_keys, const float parent_orco[3]) -{ - struct ParticleSettings *part = ctx->sim.psys->part; - struct Material *ma = ctx->ma; - const bool draw_col_ma = (part->draw_col == PART_DRAW_COL_MAT); - const bool use_length_check = !ELEM(part->kink, PART_KINK_SPIRAL); - - ParticlePathModifier *mod; - ParticleCacheKey *key; - int totkeys, k; - float max_length; - -#if 0 /* TODO for the future: use true particle modifiers that work on the whole curve */ - for (mod = modifiers->first; mod; mod = mod->next) { - mod->apply(keys, totkeys, parent_keys); - } -#else - (void)modifiers; - (void)mod; - - if (part->kink == PART_KINK_SPIRAL) { - do_kink_spiral(ctx, ptex, parent_orco, cpa, orco, hairmat, keys, parent_keys, &totkeys, &max_length); - keys->segments = totkeys - 1; - } - else { - ParticlePathIterator iter; - - totkeys = ctx->segments + 1; - max_length = ptex->length; - - for (k = 0, key = keys; k < totkeys; k++, key++) { - ParticleKey *par; - - psys_path_iter_get(&iter, keys, totkeys, parent_keys, k); - par = (ParticleKey *)iter.parent_key; - - /* apply different deformations to the child path */ - do_child_modifiers(ctx, &ctx->sim, ptex, par->co, par->vel, iter.parent_rotation, parent_orco, cpa, orco, hairmat, (ParticleKey *)key, iter.time); - } - } - - { - const float step_length = 1.0f / (float)(totkeys - 1); - - float cur_length = 0.0f; - - /* we have to correct velocity because of kink & clump */ - for (k = 0, key = keys; k < totkeys; ++k, ++key) { - if (k >= 2) { - sub_v3_v3v3((key-1)->vel, key->co, (key-2)->co); - mul_v3_fl((key-1)->vel, 0.5); - - if (ma && draw_col_ma) - get_strand_normal(ma, ornor, cur_length, (key-1)->vel); - } - - if (use_length_check && k > 1) { - float dvec[3]; - /* check if path needs to be cut before actual end of data points */ - if (!check_path_length(k, keys, key, max_length, step_length, &cur_length, dvec)) { - /* last key */ - sub_v3_v3v3(key->vel, key->co, (key-1)->co); - if (ma && draw_col_ma) { - copy_v3_v3(key->col, &ma->r); - } - break; - } - } - if (k == totkeys-1) { - /* last key */ - sub_v3_v3v3(key->vel, key->co, (key-1)->co); - } - - if (ma && draw_col_ma) { - copy_v3_v3(key->col, &ma->r); - get_strand_normal(ma, ornor, cur_length, key->vel); - } - } - } -#endif -} - -/* ------------------------------------------------------------------------- */ - -void do_kink(ParticleKey *state, const float par_co[3], const float par_vel[3], const float par_rot[4], float time, float freq, float shape, - float amplitude, float flat, short type, short axis, float obmat[4][4], int smooth_start) -{ - float kink[3] = {1.f, 0.f, 0.f}, par_vec[3], q1[4] = {1.f, 0.f, 0.f, 0.f}; - float t, dt = 1.f, result[3]; - - if (ELEM(type, PART_KINK_NO, PART_KINK_SPIRAL)) - return; - - CLAMP(time, 0.f, 1.f); - - if (shape != 0.0f && !ELEM(type, PART_KINK_BRAID)) { - if (shape < 0.0f) - time = (float)pow(time, 1.f + shape); - else - time = (float)pow(time, 1.f / (1.f - shape)); - } - - t = time * freq * (float)M_PI; - - if (smooth_start) { - dt = fabsf(t); - /* smooth the beginning of kink */ - CLAMP(dt, 0.f, (float)M_PI); - dt = sinf(dt / 2.f); - } - - if (!ELEM(type, PART_KINK_RADIAL)) { - float temp[3]; - - kink[axis] = 1.f; - - if (obmat) - mul_mat3_m4_v3(obmat, kink); - - mul_qt_v3(par_rot, kink); - - /* make sure kink is normal to strand */ - project_v3_v3v3(temp, kink, par_vel); - sub_v3_v3(kink, temp); - normalize_v3(kink); - } - - copy_v3_v3(result, state->co); - sub_v3_v3v3(par_vec, par_co, state->co); - - switch (type) { - case PART_KINK_CURL: - { - float curl_offset[3]; - - /* rotate kink vector around strand tangent */ - mul_v3_v3fl(curl_offset, kink, amplitude); - axis_angle_to_quat(q1, par_vel, t); - mul_qt_v3(q1, curl_offset); - - interp_v3_v3v3(par_vec, state->co, par_co, flat); - add_v3_v3v3(result, par_vec, curl_offset); - break; - } - case PART_KINK_RADIAL: - { - if (flat > 0.f) { - float proj[3]; - /* flatten along strand */ - project_v3_v3v3(proj, par_vec, par_vel); - madd_v3_v3fl(result, proj, flat); - } - - madd_v3_v3fl(result, par_vec, -amplitude * sinf(t)); - break; - } - case PART_KINK_WAVE: - { - madd_v3_v3fl(result, kink, amplitude * sinf(t)); - - if (flat > 0.f) { - float proj[3]; - /* flatten along wave */ - project_v3_v3v3(proj, par_vec, kink); - madd_v3_v3fl(result, proj, flat); - - /* flatten along strand */ - project_v3_v3v3(proj, par_vec, par_vel); - madd_v3_v3fl(result, proj, flat); - } - break; - } - case PART_KINK_BRAID: - { - float y_vec[3] = {0.f, 1.f, 0.f}; - float z_vec[3] = {0.f, 0.f, 1.f}; - float vec_one[3], state_co[3]; - float inp_y, inp_z, length; - - if (par_rot) { - mul_qt_v3(par_rot, y_vec); - mul_qt_v3(par_rot, z_vec); - } - - negate_v3(par_vec); - normalize_v3_v3(vec_one, par_vec); - - inp_y = dot_v3v3(y_vec, vec_one); - inp_z = dot_v3v3(z_vec, vec_one); - - if (inp_y > 0.5f) { - copy_v3_v3(state_co, y_vec); - - mul_v3_fl(y_vec, amplitude * cosf(t)); - mul_v3_fl(z_vec, amplitude / 2.f * sinf(2.f * t)); - } - else if (inp_z > 0.0f) { - mul_v3_v3fl(state_co, z_vec, sinf((float)M_PI / 3.f)); - madd_v3_v3fl(state_co, y_vec, -0.5f); - - mul_v3_fl(y_vec, -amplitude * cosf(t + (float)M_PI / 3.f)); - mul_v3_fl(z_vec, amplitude / 2.f * cosf(2.f * t + (float)M_PI / 6.f)); - } - else { - mul_v3_v3fl(state_co, z_vec, -sinf((float)M_PI / 3.f)); - madd_v3_v3fl(state_co, y_vec, -0.5f); - - mul_v3_fl(y_vec, amplitude * -sinf(t + (float)M_PI / 6.f)); - mul_v3_fl(z_vec, amplitude / 2.f * -sinf(2.f * t + (float)M_PI / 3.f)); - } - - mul_v3_fl(state_co, amplitude); - add_v3_v3(state_co, par_co); - sub_v3_v3v3(par_vec, state->co, state_co); - - length = normalize_v3(par_vec); - mul_v3_fl(par_vec, MIN2(length, amplitude / 2.f)); - - add_v3_v3v3(state_co, par_co, y_vec); - add_v3_v3(state_co, z_vec); - add_v3_v3(state_co, par_vec); - - shape = 2.f * (float)M_PI * (1.f + shape); - - if (t < shape) { - shape = t / shape; - shape = (float)sqrt((double)shape); - interp_v3_v3v3(result, result, state_co, shape); - } - else { - copy_v3_v3(result, state_co); - } - break; - } - } - - /* blend the start of the kink */ - if (dt < 1.f) - interp_v3_v3v3(state->co, state->co, result, dt); - else - copy_v3_v3(state->co, result); -} - -static float do_clump_level(float result[3], const float co[3], const float par_co[3], float time, - float clumpfac, float clumppow, float pa_clump, CurveMapping *clumpcurve) -{ - float clump = 0.0f; - - if (clumpcurve) { - clump = pa_clump * (1.0f - CLAMPIS(curvemapping_evaluateF(clumpcurve, 0, time), 0.0f, 1.0f)); - - interp_v3_v3v3(result, co, par_co, clump); - } - else if (clumpfac != 0.0f) { - float cpow; - - if (clumppow < 0.0f) - cpow = 1.0f + clumppow; - else - cpow = 1.0f + 9.0f * clumppow; - - if (clumpfac < 0.0f) /* clump roots instead of tips */ - clump = -clumpfac * pa_clump * (float)pow(1.0 - (double)time, (double)cpow); - else - clump = clumpfac * pa_clump * (float)pow((double)time, (double)cpow); - - interp_v3_v3v3(result, co, par_co, clump); - } - - return clump; -} - -float do_clump(ParticleKey *state, const float par_co[3], float time, const float orco_offset[3], float clumpfac, float clumppow, float pa_clump, - bool use_clump_noise, float clump_noise_size, CurveMapping *clumpcurve) -{ - float clump; - - if (use_clump_noise && clump_noise_size != 0.0f) { - float center[3], noisevec[3]; - float da[4], pa[12]; - - mul_v3_v3fl(noisevec, orco_offset, 1.0f / clump_noise_size); - voronoi(noisevec[0], noisevec[1], noisevec[2], da, pa, 1.0f, 0); - mul_v3_fl(&pa[0], clump_noise_size); - add_v3_v3v3(center, par_co, &pa[0]); - - do_clump_level(state->co, state->co, center, time, clumpfac, clumppow, pa_clump, clumpcurve); - } - - clump = do_clump_level(state->co, state->co, par_co, time, clumpfac, clumppow, pa_clump, clumpcurve); - - return clump; -} - -static void do_rough(const float loc[3], float mat[4][4], float t, float fac, float size, float thres, ParticleKey *state) -{ - float rough[3]; - float rco[3]; - - if (thres != 0.0f) { - if (fabsf((float)(-1.5f + loc[0] + loc[1] + loc[2])) < 1.5f * thres) { - return; - } - } - - copy_v3_v3(rco, loc); - mul_v3_fl(rco, t); - rough[0] = -1.0f + 2.0f * BLI_gTurbulence(size, rco[0], rco[1], rco[2], 2, 0, 2); - rough[1] = -1.0f + 2.0f * BLI_gTurbulence(size, rco[1], rco[2], rco[0], 2, 0, 2); - rough[2] = -1.0f + 2.0f * BLI_gTurbulence(size, rco[2], rco[0], rco[1], 2, 0, 2); - - madd_v3_v3fl(state->co, mat[0], fac * rough[0]); - madd_v3_v3fl(state->co, mat[1], fac * rough[1]); - madd_v3_v3fl(state->co, mat[2], fac * rough[2]); -} - -static void do_rough_end(const float loc[3], float mat[4][4], float t, float fac, float shape, ParticleKey *state) -{ - float rough[2]; - float roughfac; - - roughfac = fac * (float)pow((double)t, shape); - copy_v2_v2(rough, loc); - rough[0] = -1.0f + 2.0f * rough[0]; - rough[1] = -1.0f + 2.0f * rough[1]; - mul_v2_fl(rough, roughfac); - - madd_v3_v3fl(state->co, mat[0], rough[0]); - madd_v3_v3fl(state->co, mat[1], rough[1]); -} - -static void do_rough_curve(const float loc[3], float mat[4][4], float time, float fac, float size, CurveMapping *roughcurve, ParticleKey *state) -{ - float rough[3]; - float rco[3]; - - if (!roughcurve) - return; - - fac *= CLAMPIS(curvemapping_evaluateF(roughcurve, 0, time), 0.0f, 1.0f); - - copy_v3_v3(rco, loc); - mul_v3_fl(rco, time); - rough[0] = -1.0f + 2.0f * BLI_gTurbulence(size, rco[0], rco[1], rco[2], 2, 0, 2); - rough[1] = -1.0f + 2.0f * BLI_gTurbulence(size, rco[1], rco[2], rco[0], 2, 0, 2); - rough[2] = -1.0f + 2.0f * BLI_gTurbulence(size, rco[2], rco[0], rco[1], 2, 0, 2); - - madd_v3_v3fl(state->co, mat[0], fac * rough[0]); - madd_v3_v3fl(state->co, mat[1], fac * rough[1]); - madd_v3_v3fl(state->co, mat[2], fac * rough[2]); -} - -void do_child_modifiers(ParticleThreadContext *ctx, ParticleSimulationData *sim, ParticleTexture *ptex, - const float par_co[3], const float par_vel[3], const float par_rot[4], const float par_orco[3], - ChildParticle *cpa, const float orco[3], float mat[4][4], ParticleKey *state, float t) -{ - ParticleSettings *part = sim->psys->part; - CurveMapping *clumpcurve = NULL, *roughcurve = NULL; - int i = cpa - sim->psys->child; - int guided = 0; - - if (part->child_flag & PART_CHILD_USE_CLUMP_CURVE) { - clumpcurve = (ctx != NULL) ? ctx->clumpcurve : part->clumpcurve; - } - if (part->child_flag & PART_CHILD_USE_ROUGH_CURVE) { - roughcurve = (ctx != NULL) ? ctx->roughcurve : part->roughcurve; - } - - float kink_amp = part->kink_amp; - float kink_amp_clump = part->kink_amp_clump; - float kink_freq = part->kink_freq; - float rough1 = part->rough1; - float rough2 = part->rough2; - float rough_end = part->rough_end; - const bool smooth_start = (sim->psys->part->childtype == PART_CHILD_FACES); - - if (ptex) { - kink_amp *= ptex->kink_amp; - kink_freq *= ptex->kink_freq; - rough1 *= ptex->rough1; - rough2 *= ptex->rough2; - rough_end *= ptex->roughe; - } - - if (part->flag & PART_CHILD_EFFECT) - /* state is safe to cast, since only co and vel are used */ - guided = do_guides(sim->psys->part, sim->psys->effectors, (ParticleKey *)state, cpa->parent, t); - - if (guided == 0) { - float orco_offset[3]; - float clump; - - sub_v3_v3v3(orco_offset, orco, par_orco); - clump = do_clump(state, par_co, t, orco_offset, part->clumpfac, part->clumppow, ptex ? ptex->clump : 1.f, - part->child_flag & PART_CHILD_USE_CLUMP_NOISE, part->clump_noise_size, clumpcurve); - - if (kink_freq != 0.f) { - kink_amp *= (1.f - kink_amp_clump * clump); - - do_kink(state, par_co, par_vel, par_rot, t, kink_freq, part->kink_shape, - kink_amp, part->kink_flat, part->kink, part->kink_axis, - sim->ob->obmat, smooth_start); - } - } - - if (roughcurve) { - do_rough_curve(orco, mat, t, rough1, part->rough1_size, roughcurve, state); - } - else { - if (rough1 > 0.f) - do_rough(orco, mat, t, rough1, part->rough1_size, 0.0, state); - - if (rough2 > 0.f) { - float vec[3]; - psys_frand_vec(sim->psys, i + 27, vec); - do_rough(vec, mat, t, rough2, part->rough2_size, part->rough2_thres, state); - } - - if (rough_end > 0.f) { - float vec[3]; - psys_frand_vec(sim->psys, i + 27, vec); - do_rough_end(vec, mat, t, rough_end, part->rough_end_shape, state); - } - } -} |