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New lighting object tree: AmbientLight -> PointLight

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This commit is contained in:
Eryn Wells 2013-09-13 14:12:55 -07:00
parent 9fef3c33d2
commit 55ef253c10
5 changed files with 99 additions and 32 deletions
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4
src/scene.cc
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@ -140,7 +140,7 @@ Scene::add_shape(Shape *shape)
* Add a light to the scene.
*/
void
Scene::add_light(Light *light)
Scene::add_light(PointLight *light)
{
lights.push_back(light);
}
@ -186,7 +186,7 @@ Scene::trace_ray(const Ray &ray, const int depth)
Vector3 intersection = ray.parameterize(nearest_t);
Vector3 normal = intersected_shape->compute_normal(intersection);
for (Light *l : lights) {
for (PointLight *l : lights) {
Vector3 light_direction = (intersection - l->get_origin()).normalize();
float ldotn = light_direction.dot(normal);
out_color.red *= ((ldotn >= 0.0) ? ldotn : 0.0) * l->get_intensity();