void mdhim_options_set_db_paths(struct mdhim_options_t* opts, char **paths, int num_paths)
{
int i = 0;
int ret;
int verified_paths = -1;
if (num_paths <= 0) {
return;
}
opts->db_paths = malloc(sizeof(char *) * num_paths);
for (i = 0; i < num_paths; i++) {
if (!paths[i]) {
continue;
}
ret = check_path_length(opts, paths[i]);
if (!ret) {
continue;
}
if (!i) {
set_manifest_path(opts, paths[i]);
}
verified_paths++;
opts->db_paths[verified_paths] = malloc(strlen(paths[i]) + 1);
sprintf(opts->db_paths[verified_paths], "%s", paths[i]);
}
opts->num_paths = ++verified_paths;
};
void mdhim_options_set_db_path(mdhim_options_t* opts, char *path)
{
int ret;
if (!path) {
return;
}
ret = check_path_length(opts, path);
if (ret) {
opts->db_path = path;
set_manifest_path(opts, path);
}
};
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 {
/* Fill in invariant part of modifier context. */
ParticleChildModifierContext modifier_ctx = {NULL};
modifier_ctx.thread_ctx = ctx;
modifier_ctx.sim = &ctx->sim;
modifier_ctx.ptex = ptex;
modifier_ctx.cpa = cpa;
modifier_ctx.orco = orco;
modifier_ctx.parent_keys = parent_keys;
totkeys = ctx->segments + 1;
max_length = ptex->length;
for (k = 0, key = keys; k < totkeys; k++, key++) {
ParticlePathIterator iter;
psys_path_iter_get(&iter, keys, totkeys, parent_keys, k);
ParticleKey *par = (ParticleKey *)iter.parent_key;
/* Fill in variant part of modifier context. */
modifier_ctx.par_co = par->co;
modifier_ctx.par_vel = par->vel;
modifier_ctx.par_rot = iter.parent_rotation;
modifier_ctx.par_orco = parent_orco;
/* Apply different deformations to the child path. */
do_child_modifiers(&modifier_ctx, hairmat, (ParticleKey *)key, iter.time);
}
}
{
const float step_length = 1.0f / (float)(totkeys - 1);
float cur_length = 0.0f;
if (max_length <= 0.0f) {
keys->segments = -1;
totkeys = 0;
}
/* 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 > 0) {
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
}