cloudy-raytracer/scene/simplescene.cpp

#include "scene/simplescene.h"
#include "primitive/primitive.h"
#include "shader/shader.h"

bool SimpleScene::findIntersection(Ray &ray) const
{
    bool hit = false;
    for (auto i: this->primitives())
        hit |= i->intersect(ray);
    return hit;
}

bool SimpleScene::findOcclusion(Ray &ray) const
{
    for (auto i: this->primitives())
        if (i->intersect(ray) && !i->shader()->isTransparent())
            return true;
    return false;
}

Color SimpleScene::getTransparency(Ray &ray, float maxDistance) const
{
    ray.length = maxDistance;
    ray.primitive = nullptr;

    Color transparency(1, 1, 1);
    for (auto i: this->primitives())
    {
        Ray r = ray;
        if (i->intersect(r) && r.length < maxDistance && i->shader()->isTransparent())
        {
            Color t = i->shader()->transparency(*this, r, maxDistance);
            transparency.r *= t.r;
            transparency.g *= t.g;
            transparency.b *= t.b;
        }
    }
    return transparency;
}