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package main
const HEIGHT = 100
const WIDTH = 200
func main() {
LOWER_LEFT_CORNER := Vec3D{-2.0, -1.0, -1.0}
ORIGIN := Vec3D{0.0, 0.0, 0.0}
HORIZONTAL := Vec3D{4.0, 0.0, 0.0}
VERTICAL := Vec3D{0.0, 2.0, 0.0}
frame := Frame{}
for x := 0; x < HEIGHT; x++ {
for y := 0; y < WIDTH; y++ {
u, v := float64(y)/float64(WIDTH), float64(x)/float64(HEIGHT)
ray := Ray{ORIGIN, AddVec3D(AddVec3D(LOWER_LEFT_CORNER, ScalarProduct(u, HORIZONTAL)), ScalarProduct(v, VERTICAL))}
color := RayColor(ray)
frame[HEIGHT-1-x][y] = color.ToPixel()
}
}
frame.Save("img.ppm")
}
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