int ray_color(t_ray *ray, t_env *e)
{
double spot_dist;
int color;
t_list *lst;
t_ray light;
if (!ray->obj)
return (COLOR_BACKGROUND);
if (!e->scene->spot)
return (ray->obj->param.color);
/*
Si le damier est voulue;
*/
//color = damier_color(ray);
color = color_scale(ray->obj->param.color, ray->obj->param.ambiant);
lst = e->scene->spot;
while (lst)
{
init_light_ray(&light, ray, lst->content);
ray_intersect(&light, e);
spot_dist = 0;
if (light.obj)
spot_dist = mat_dist(&LST_CONTENT(lst, t_spot*)->position,
&ray->intersection);
if (!light.obj || spot_dist < light.dist)
color = color_add(color, get_spot(ray, &light, lst->content));
lst = lst->next;
}
//if(ray->obj && ray->obj->param.type == PLANE)
// color = damier_color(ray);
return (color);
}
main(int argc, char **argv)
{
Prim *o;
Color c; int u, v;
Ray r; Inode *l;
o = sphere_instance(&sphere_funcs);
init_sdl();
s = scene_read();
init_render();
for (v = s->view->sc.ll.y; v < s->view->sc.ur.y; v += 1) {
for (u = s->view->sc.ll.x; u < s->view->sc.ur.x; u += 1) {
r = ray_unit(ray_transform(ray_view(u, v), mclip));
if ((l = ray_intersect(s->objs, r)) != NULL)
c = point_tshade(ray_point(r, l->t), l->n, s->view->center, rc, l->m, o);
else
c = bgcolor;
inode_free(l);
img_putc(s->img, u, v, col_dpymap(c));
}
}
img_write(s->img,"stdout",0);
exit(0);
}
Color ray_shade(int level, Real w, Ray v, RContext *rc, Object *ol)
{
Inode *i = ray_intersect(ol, v);
if (i != NULL) { Light *l; Real wf;
Material *m = i->m;
Vector3 p = ray_point(v, i->t);
Cone recv = cone_make(p, i->n, PIOVER2);
Color c = c_mult(m->c, c_scale(m->ka, ambient(rc)));
rc->p = p;
for (l = rc->l; l != NULL; l = l->next)
if ((*l->transport)(l, recv, rc) && (wf = shadow(l, p, ol)) > RAY_WF_MIN)
c = c_add(c, c_mult(m->c,
c_scale(wf * m->kd * v3_dot(l->outdir,i->n), l->outcol)));
if (level++ < MAX_RAY_LEVEL) {
if ((wf = w * m->ks) > RAY_WF_MIN) {
Ray r = ray_make(p, reflect_dir(v.d, i->n));
c = c_add(c, c_mult(m->s,
c_scale(m->ks, ray_shade(level, wf, r, rc, ol))));
}
if ((wf = w * m->kt) > RAY_WF_MIN) {
Ray t = ray_make(p, refract_dir(v.d, i->n, (i->enter)? 1/m->ir: m->ir));
if (v3_sqrnorm(t.d) > 0) {
c = c_add(c, c_mult(m->s,
c_scale(m->kt, ray_shade(level, wf, t, rc, ol))));
}
}
}
inode_free(i);
return c;
} else {
return BG_COLOR;
}
}
// Doc in parent
void
SoVRMLGroup::rayPick(SoRayPickAction * action)
{
if (this->pickCulling.getValue() == OFF ||
!PRIVATE(this)->bboxcache || !PRIVATE(this)->bboxcache->isValid(action->getState()) ||
!action->hasWorldSpaceRay() ||
ray_intersect(action, PRIVATE(this)->bboxcache->getProjectedBox())) {
SoVRMLGroup::doAction(action);
}
}
Real shadow(Light *l, Vector3 p, Object *ol)
{
Real t, kt; Inode *i; Vector3 d;
if (l->type == LIGHT_AMBIENT)
return 1.0;
d = (l->type == LIGHT_DISTANT)? l->dir : v3_sub(l->loc, p);
if ((i = ray_intersect(ol, ray_make(p, d))) == NULL)
return 1.0;
t = i->t; kt = i->m->kt; inode_free(i);
if (l->type == LIGHT_DISTANT && t > RAY_EPS)
return kt;
else if (l->type != LIGHT_DISTANT && t > RAY_EPS && t < 1)
return kt;
else
return 1.0;
}