src/rcrt/tracing/StereoMetaTracer.cpp

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#include "StereoMetaTracer.h"

namespace rcrt
{

StereoMetaTracer::StereoMetaTracer(PerspectiveCamera* cam, float eyeDistance, TracingStrategy* ts):TracingStrategy(ts->getScene()),strategy(ts)
{
        const Vec3D& xAxis = cam->getXAxis();
        const Vec3D& dir = cam->getDirection();
        const Vec3D& up = cam->getUp();
        const float& angle = cam->getAngle();
        const Point3D& pos = cam->getPosition();
        const int& resX = cam->getResolutionX();
        const int& resY = cam->getResolutionY();
        const float& focus = cam->getFocus();
        
        Point3D posLeft = pos - (xAxis * (eyeDistance / 2));
        Point3D posRight = pos + (xAxis * (eyeDistance / 2));
        
        Point3D focusPoint = pos + dir * focus;
        
        Vec3D dirLeft = (focusPoint - posLeft).normalize();
        Vec3D dirRight = (focusPoint - posRight).normalize();
        
        camLeft = new PerspectiveCamera(angle,posLeft,dirLeft,up,resX,resY);
        camRight = new PerspectiveCamera(angle,posRight,dirRight,up,resX,resY);
}

StereoMetaTracer::~StereoMetaTracer()
{
        delete camLeft;
        delete camRight;
}

RGBColor StereoMetaTracer::trace(Ray& r) const
{
        return RGBColor::BLACK;
}
Image StereoMetaTracer::trace(Camera* cam) const
{
        return trace(cam, 0, 0, camLeft->getResolutionX()-1, camLeft->getResolutionY()-1);
}


Image StereoMetaTracer::trace(Camera* cam, const int& x0, const int& y0,
                const int& x1, const int& y1) const
{
        Image imgLeft = strategy->trace(camLeft, x0, y0, x1, y1);
        Image imgRight = strategy->trace(camRight, x0, y0, x1, y1);
                
        Image stereoImage(imgLeft.getWidth(),imgLeft.getHeight());
                
        for (int i = 0; i < imgLeft.getWidth(); i++) {
                for (int j = 0; j < imgLeft.getHeight(); j++) {
                        const RGBAColor& pixelLeft = imgLeft.getPixel(i,j);
                        const RGBAColor& pixelRight = imgRight.getPixel(i,j);
                        stereoImage.setPixel(RGBAColor(pixelLeft.r(),pixelRight.g(),pixelRight.b(),pixelRight.a()),i,j);
                }
        }
                
        return stereoImage;
}

}

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