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/******************************************************************/
/* This file is part of the homework assignments for CSCI-427/527 */
/* at The College of William & Mary and authored by Pieter Peers. */
/* No part of this file, whether altered or in original form, can */
/* be distributed or used outside the context of CSCI-427/527 */
/* without consent of either the College of William & Mary or */
/* Pieter Peers. */
/******************************************************************/
#include "raycasting.h"
/////////////
// Methods //
/////////////
image raycasting::render(const scene& s) const
{
image result(s.getCamera().width(), s.getCamera().height());
// for every pixel
for(image::size_type y=0; y < result.height(); y++)
for(image::size_type x=0; x < result.width(); x++)
{
// generate view ray
ray r = s.getCamera()(x,y);
// intersect scene
intersectionPoint ip = s.intersect(r);
// shade pixel
if(ip.isHit())
{
// for each light source
for(unsigned int l=0; l < s.numberOfLightsources(); l++)
{
// connect to light source
lightSample ls = s.getLightsource(l).intensityAt(ip.position());
// shade
result(x,y) += ip.shade(ls);
}
}
else result(x,y) = color(0.0f, 0.0f, 0.0f);
}
// Done.
return result;
}
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