src/rcrt/tracing/SuperMetaTracer.cpp

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#include "SuperMetaTracer.h"

namespace rcrt
{

SuperMetaTracer::SuperMetaTracer(TracingStrategy* trac):TracingStrategy(trac->getScene()),tracer(trac)
{
}

SuperMetaTracer::~SuperMetaTracer()
{
}


RGBColor SuperMetaTracer::trace(Ray& r) const
{
        return tracer->trace(r);
}

Image SuperMetaTracer::trace(Camera* cam, const int& x0, const int& y0,
                const int& x1, const int& y1) const
{
        //do simple 4 sample rotated grid sampling
        int resX = x1-x0+1;
        int resY = y1-y0+1;
        float triangles = 0;
        Image img(resX, resY);

        for(int x=x0; x <= x1; x++){
                for(int y=y0; y <= y1; y++){
                        // primary ray to trace
                Ray ray1 = cam->getRay(Point2D(x+0.125,y+0.375));
                Ray ray2 = cam->getRay(Point2D(x+0.625,y+0.125));
                Ray ray3 = cam->getRay(Point2D(x+0.875,y+0.625));
                Ray ray4 = cam->getRay(Point2D(x+0.375,y+0.875));
                // ray trace the scene
                const RGBColor col1(tracer->trace(ray1));
                const RGBColor col2(tracer->trace(ray2));
                const RGBColor col3(tracer->trace(ray3));
                const RGBColor col4(tracer->trace(ray4));
                
                const RGBColor avg(((col1 + col2 + col3 + col4) / 4).clamped());
                
                img.setPixel(avg, x-x0, y-y0);

                triangles += ray1.tris + ray2.tris + ray3.tris + ray4.tris;
                }
        }
        
        float triPray = triangles/(resX*resY*4);
        std::cout << "        average Triangle-Intersections per ray: " << triPray << std::endl;
        return img;
        
}

}

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