ImageRef Scene::rasterize(CameraRef camera)
{
ImageRef image = new Image(camera->width(), camera->height());
for (unsigned int y = 0; y < camera->height(); y++) {
for (unsigned int x = 0; x < camera->width(); x++) {
float xPos = (float)x / (float) camera->width() - 0.5f;
float yPos = (float)y / (float) camera->height() - 0.5f;
Ray viewRay = camera->viewRay(xPos, yPos);
HitInfo hitInfo;
if (m_rootGroup->hit(viewRay, &hitInfo)) {
image->setPixelColor(x, y, hitInfo.material->color());
}
}
}
return image;
}
void Scene::raytrace(CameraRef camera, Rect rect, RenderOption option, ImageRef image)
{
ASSERT(image->width() == rect.size.width && image->height() == rect.size.height);
for (unsigned int y = 0; y < rect.size.height; y++) {
for (unsigned int x = 0; x < rect.size.width; x++) {
float xPos = (float)(x + rect.origin.x) / (float) camera->width() - 0.5f;
float yPos = (float)(y + rect.origin.y) / (float) camera->height() - 0.5f;
Ray viewRay = camera->viewRay(xPos, yPos);
HitInfo hitInfo;
Color color;
if (traceRay(viewRay, option, 1.0f, 0, &color, &hitInfo)) {
image->setPixelColor(x, y, color);
} else {
// set Background ccolor
//image->setPixelColor(x, y, hitInfo.material->color());
}
}
}
}
