t_color compute_light(t_scene *scene, t_ray *ray)
{
t_list *current;
t_ray lray;
t_color color[3];
t_phpa ph;
current = scene->lights;
ph.normal = get_normal(*ray);
set_ambiant_light(&ph, scene, ray, color);
while (current)
{
lray.pos = ((t_light *)current->content)->pos;
lray.dir = norm_vect(mtx_add(mtx_sub(mtx_mult(ray->dir, ray->t),
lray.pos), ray->pos));
lray.invdir = get_inv_vect(&lray.dir);
if (find_closest(scene, &lray) && ray->closest == lray.closest
&& near_enough(ray, &lray))
{
set_params(&ph, &lray, ray);
ph.camera = scene->camera;
ph.light = (t_light *)current->content;
phong(&ph);
}
current = current->next;
}
set_color_max(&ph);
return (*color);
}
t_obj *plane_data(t_obj *lst, char **tab, char *buf)
{
if (tab[0] == NULL || tab[1] == NULL || tab[2] == NULL || tab[3] == NULL
|| tab[4] == NULL || tab[5] == NULL || tab[6] == NULL || tab[7] == NULL
|| tab[8] == NULL)
file_error("Parser error in scene file near : ", buf);
lst->pos = new_vect(ft_atof(tab[0]), ft_atof(tab[1]), ft_atof(tab[2]));
lst->nor = new_vect(ft_atof(tab[3]), ft_atof(tab[4]), ft_atof(tab[5]));
norm_vect(lst->nor);
lst->r = ft_atoi(tab[6]);
lst->g = ft_atoi(tab[7]);
lst->b = ft_atoi(tab[8]);
return (lst);
}
/* Gourandovo mapovani barev na objekt
*/
void group_gourand_maping(K_EDITOR * p_cnf, byte cop)
{
GLMATRIX *p_kw;
int mod = p_cnf->mod;
int os = p_cnf->bar.oboustrany_stinovac;
int k, o, v, gr;
float tx, ty, tz;
float px, py, pz;
float v1, v2, v3;
float uhel;
float r, g, b, a;
float rr, rg, rb, ra;
v1 = p_cnf->p_camera->_13;
v2 = p_cnf->p_camera->_23;
v3 = p_cnf->p_camera->_33;
norm_vect(&v1, &v2, &v3);
rr = p_cnf->bar.gr;
rg = p_cnf->bar.gg;
rb = p_cnf->bar.gb;
ra = p_cnf->bar.ga;
for (gr = 0; gr < p_cnf->groupnum; gr++) {
k = p_cnf->p_group[gr].k;
o = p_cnf->p_group[gr].o;
v = p_cnf->p_group[gr].v;
if (p_cnf->p_kont[k]->kflag & KONT_KEYFRAME)
p_kw = &p_cnf->p_kont[k]->p_obj[o]->m;
else
p_kw = kont_world_matrix(p_cnf->p_kont[k]);
px = p_cnf->p_kont[k]->p_obj[o]->p_vertex[v].nx;
py = p_cnf->p_kont[k]->p_obj[o]->p_vertex[v].ny;
pz = p_cnf->p_kont[k]->p_obj[o]->p_vertex[v].nz;
tx = p_kw->_11 * px + p_kw->_21 * py + p_kw->_31 * pz;
ty = p_kw->_12 * px + p_kw->_22 * py + p_kw->_32 * pz;
tz = p_kw->_13 * px + p_kw->_23 * py + p_kw->_33 * pz;
norm_vect(&tx, &ty, &tz);
uhel = (tx * v1 + ty * v2 + tz * v3);
uhel =
(p_cnf->bar.gourand_scale * (p_cnf->bar.gourand_pridat1 + uhel)) +
p_cnf->bar.gourand_pridat2;
// uhel je od 0 - 1
//
//uhel += (rand()%1000)*0.0001f;
if (os) {
uhel = fabsf(uhel);
r = (rr * uhel > 1.0f) ? 1.0f : rr * uhel;
g = (rg * uhel > 1.0f) ? 1.0f : rg * uhel;
b = (rb * uhel > 1.0f) ? 1.0f : rb * uhel;
a = (ra * uhel > 1.0f) ? 1.0f : ra * uhel;
}
else {
if (uhel > 0) {
r = (rr * uhel > 1.0f) ? 1.0f : rr * uhel;
g = (rg * uhel > 1.0f) ? 1.0f : rg * uhel;
b = (rb * uhel > 1.0f) ? 1.0f : rb * uhel;
a = (ra * uhel > 1.0f) ? 1.0f : ra * uhel;
}
else {
r = g = b = a = 0;
}
}
if (!p_cnf->bar.mod) {
nastav_barvu_rgba(&p_cnf->p_kont[k]->p_obj[o]->p_vertex[v].dr, r, g, b,
a, cop);
nastav_barvu_rgba(&p_cnf->p_kont[k]->p_obj[o]->p_vertex[v].mdr, r, g, b,
a, cop);
}
else {
nastav_barvu_rgb(&p_cnf->p_kont[k]->p_obj[o]->p_vertex[v].sr, r, g, b,
cop);
nastav_barvu_rgb(&p_cnf->p_kont[k]->p_obj[o]->p_vertex[v].msr, r, g, b,
cop);
}
}
}
/* Gourandovo mapovani barev na objekt
*/
void obj_gourand_maping(K_EDITOR * p_cnf, EDIT_KONTEJNER * p_kont,
EDIT_OBJEKT * p_obj, byte cop)
{
GLMATRIX *p_kw;
MUJ_BOD *p_bod;
int mod = p_cnf->mod;
int v;
int os = p_cnf->bar.oboustrany_stinovac;
float tx, ty, tz;
float px, py, pz;
float v1, v2, v3;
float uhel;
float r, g, b, a;
float rr, rg, rb, ra;
if (p_kont->kflag & KONT_KEYFRAME)
p_kw = &p_obj->m;
else
p_kw = kont_world_matrix(p_kont);
rr = p_cnf->bar.gr;
rg = p_cnf->bar.gg;
rb = p_cnf->bar.gb;
ra = p_cnf->bar.ga;
// z vektor pohledu
v1 = p_cnf->p_camera->_13;
v2 = p_cnf->p_camera->_23;
v3 = p_cnf->p_camera->_33;
norm_vect(&v1, &v2, &v3);
p_bod = p_obj->p_vertex;
for (v = 0; v < p_obj->vertexnum; v++) {
px = p_bod[v].nx;
py = p_bod[v].ny;
pz = p_bod[v].nz;
tx = p_kw->_11 * px + p_kw->_21 * py + p_kw->_31 * pz;
ty = p_kw->_12 * px + p_kw->_22 * py + p_kw->_32 * pz;
tz = p_kw->_13 * px + p_kw->_23 * py + p_kw->_33 * pz;
norm_vect(&tx, &ty, &tz);
uhel = tx * v1 + ty * v2 + tz * v3;
uhel =
(p_cnf->bar.gourand_scale * (p_cnf->bar.gourand_pridat1 + uhel)) +
p_cnf->bar.gourand_pridat2;
// uhel je od 0 - 1
//
//uhel += (rand()%1000)*0.0001f;
if (os) {
uhel = fabsf(uhel);
r = (rr * uhel > 1.0f) ? 1.0f : rr * uhel;
g = (rg * uhel > 1.0f) ? 1.0f : rg * uhel;
b = (rb * uhel > 1.0f) ? 1.0f : rb * uhel;
a = (ra * uhel > 1.0f) ? 1.0f : ra * uhel;
}
else {
if (uhel > 0) {
r = (rr * uhel > 1.0f) ? 1.0f : rr * uhel;
g = (rg * uhel > 1.0f) ? 1.0f : rg * uhel;
b = (rb * uhel > 1.0f) ? 1.0f : rb * uhel;
a = (ra * uhel > 1.0f) ? 1.0f : ra * uhel;
}
else {
r = g = b = a = 0;
}
}
if (!p_cnf->bar.mod) {
nastav_barvu_rgba(&p_bod[v].dr, r, g, b, a, cop);
nastav_barvu_rgba(&p_bod[v].mdr, r, g, b, a, cop);
}
else {
nastav_barvu_rgb(&p_bod[v].sr, r, g, b, cop);
nastav_barvu_rgb(&p_bod[v].msr, r, g, b, cop);
}
}
}
