1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
package main
const HEIGHT = 100
const WIDTH = 200
const T_MIN = 0.001
const T_MAX = 1000
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}
SPHERE := Sphere{Vec3D{0.0, 0.0, -1.0}, 0.5}
EARTH := Sphere{Vec3D{0.0, -100.5, -1.0}, 100.0}
WORLD := HitableList{EARTH, SPHERE}
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, WORLD)
frame[HEIGHT-1-x][y] = color.ToPixel()
}
}
frame.Save("img.ppm")
}
|
