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// TODO Use pointers when needed to reduce memory
package main
import (
"math/rand"
"github.com/schollz/progressbar"
)
const (
// Height of frame
Height = 1000
// Width of frame
Width = 2000
// TMin is the minimal no zero time
TMin = 0.001
// TMax limits time
TMax = 1000
// RaysPerPixel for anti-aliasing
RaysPerPixel = 10
// MaxDepth for ray boucing
MaxDepth = 50
// FPS Frames per second for movies
FPS = 60
)
func main() {
// Scene
lowerLeftCorner := 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}
camera := Camera{lowerLeftCorner, origin, horizontal, vertical}
matRed := Lambertian{Color{0.7, 0.3, 0.3}}
matGreen := Lambertian{Color{0.8, 0.8, 0.0}}
metalGrey := Metal{Color{0.8, 0.8, 0.8}, 0.3}
// metalBrown := Metal{Color{0.8, 0.6, 0.2}, 1.0}
glass := Dielectric{1.5}
WORLD := HitableList{
Sphere{Vec3D{0.0, 0.0, -1.0}, 0.5, glass},
Sphere{Vec3D{-1.0, 0.0, -1.0}, 0.5, metalGrey},
Sphere{Vec3D{1.0, 0.0, -1.0}, 0.5, matRed},
Sphere{Vec3D{0.0, -100.5, -1.0}, 100.0, matGreen},
}
// Program
// start := AddVec3D(Origin, Vec3D{-1.0, 0.0, 0.0})
// move := Vec3D{2.0, 0.0, 0.0}
frame := Frame{}
bar := progressbar.New(Height)
bar.RenderBlank()
// for k := 0; k < FPS*DURATION; k++ {
// origin := AddVec3D(start, ScalarProduct(float64(k)/float64(FPS*DURATION), move))
// camera.origin = origin
for x := 0; x < Height; x++ {
for y := 0; y < Width; y++ {
var colorList [RaysPerPixel]Color
for it := 0; it < RaysPerPixel; it++ {
u := (float64(y) + rand.Float64()) / float64(Width)
v := (float64(x) + rand.Float64()) / float64(Height)
ray := camera.GetRay(u, v)
colorList[it] = RayColor(ray, WORLD, 0)
}
color := ColorMeanSquare(colorList)
frame[Height-1-x][y] = color.ToPixel()
}
bar.Add(1)
}
frame.Save("img.png")
// frame.Save(fmt.Sprintf("frames/frame_%06d.ppm", k))
}
// }
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