src/rcrt/tracing/TracingStrategy.cpp

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#include "TracingStrategy.h"
#include <algorithm>

namespace rcrt
{

TracingStrategy::TracingStrategy(Scene* s):scene(s)
{
}

TracingStrategy::~TracingStrategy()
{
}

Scene* TracingStrategy::getScene() const
{
        return scene;
}

Image TracingStrategy::trace(Camera* cam) const
{
        return trace(cam, 0, 0, cam->getResolutionX()-1, cam->getResolutionY()-1);
}

Image TracingStrategy::trace(Camera* cam, const int& x0, const int& y0,
                const int& x1, const int& y1) const
{
        int resX = x1-x0+1;
        int resY = y1-y0+1;
        float triangles = 0;
        Image img(resX, resY);
        
        double dif;
        for(int x=x0; x <= x1; x++){
                for(int y=y0; y <= y1; y++){
                        // primary ray to trace
                Ray ray = cam->getRay(Point2D(x,y));
                   
                // ray trace the scene
                RGBColor col = trace(ray);
                col = RGBColor(std::min(1.0f,col.r()),std::min(1.0f,col.g()),std::min(1.0f,col.b()));
                img.setPixel(col, x-x0, y-y0);

                triangles += ray.tris;
                }
        }
        
        float triPray = triangles/(resX*resY);
        std::cout << "        average Triangle-Intersections per ray: " << triPray << std::endl;
        return img;
}

}

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