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#include <iostream>
#include "image.h"
#include "camera.h"
#include "imageIO.h"
#include "triangle.h"
image generateImage(const camera& cam, const triangle& tri)
{
float t;
vec3d barycentricCoord;
image result(cam.width(), cam.height());
// for each 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 = cam(x,y);
// intersect triangle
bool hit = tri.intersect(r, barycentricCoord, t);
// draw pixel
if(hit)
result(x,y) = color(barycentricCoord.x, barycentricCoord.y, barycentricCoord.z);
else
result(x,y) = color(0.0f, 0.0f, 0.0f);
}
// Done.
return result;
}
int main(int argc, char** argv)
{
// setup camera
camera cam( vec3d(0.0f, 0.0f, 0.0f),
vec3d(0.0f, 0.0f, -1.0f),
vec3d(0.0f, 1.0f, 0.0f),
60.0f,
512, 512 );
// Image 1
std::cout << "Generating image 1." << std::endl;
triangle t1( vec3d(1.0f, -1.0f, -2.0f),
vec3d(0.0f, 1.0f, -2.0f),
vec3d(-1.0f, -1.0f, -2.0f) );
image result1 = generateImage(cam, t1);
exportImage("hw2-result1.ppm", result1);
// Image 2
std::cout << "Generating image 2." << std::endl;
triangle t2( vec3d(1.0f, -1.0f, 2.0f),
vec3d(0.0f, 1.0f, 2.0f),
vec3d(-1.0f, -1.0f, 2.0f) );
image result2 = generateImage(cam, t2);
exportImage("hw2-result2.ppm", result2);
// Image 3
std::cout << "Generating image 3." << std::endl;
triangle t3( vec3d(-1.0f, -1.0f, -2.0f),
vec3d(1.0f, -1.0f, -2.0f),
vec3d(0.0f, 1.0f, -2.0f) );
image result3 = generateImage(cam, t3);
exportImage("hw2-result3.ppm", result3);
// Image 4
std::cout << "Generating image 4." << std::endl;
triangle t4( vec3d(-1.0f, -1.0f, 2.0f),
vec3d(0.0f, 1.0f, 2.0f),
vec3d(1.0f, -1.0f, 2.0f) );
image result4 = generateImage(cam, t4);
exportImage("hw2-result4.ppm", result4);
// Image 5
std::cout << "Generating image 5." << std::endl;
triangle t5( vec3d(-1.0f, -1.0f, -1.0f),
vec3d(1.0f, -1.0f, -1.0f),
vec3d(1.0f, 1.0f, -1.0f) );
image result5 = generateImage(cam, t5);
exportImage("hw2-result5.ppm", result5);
// Image 6
std::cout << "Generating image 6." << std::endl;
triangle t6( vec3d(-1.0f, 2.0f, -1.0f),
vec3d(0.0f, 2.0f, 1.0f),
vec3d(1.0f, 2.0f, -1.0f) );
image result6 = generateImage(cam, t6);
exportImage("hw2-result6.ppm", result6);
// Done.
return 0;
}
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