Turingon/RaytracerGO
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First shadows :D

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This commit is contained in:
Luxdragon 2024-02-28 21:35:39 +01:00
parent b5e4647c0c
commit e166a6fc97
2 changed files with 48415 additions and 48384 deletions
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35
main.go
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@ -118,6 +118,29 @@ func Unit_vector(v Vec3) Vec3 {
return new_v
}
func RandomInUnitSphere() Vec3 {
for true {
p := RandomVec3(-1, 1)
if (p.Length_squared() < 1) {
return p
}
}
return NewVec3(0,0,0)
}
func RandomUnitVector() Vec3 {
return Unit_vector(RandomInUnitSphere())
}
func RandomOnHemisphere(normal Vec3) Vec3 {
var on_unit_sphere Vec3 = RandomUnitVector()
if (Dot(on_unit_sphere, normal) > 0.0) {
return on_unit_sphere
} else {
return on_unit_sphere.Neg()
}
}
const pi float32 = 3.1415926535897932385
func Degrees_to_radians(degrees float32) float32 {
@ -134,6 +157,13 @@ func RandomDoubleInRange(min, max float32) float32 {
return min + (max-min)*RandomDouble()
}
func RandomVec3(borders ...float32) Vec3 {
if (len(borders) == 2) {
return NewVec3(RandomDoubleInRange(borders[0], borders[1]),RandomDoubleInRange(borders[0], borders[1]),RandomDoubleInRange(borders[0], borders[1]))
} else {
return NewVec3(RandomDouble(),RandomDouble(),RandomDouble())
}
}
// ============== COLOUR CLASS ==============
func Write_color(v Vec3, samples_per_pixel int) {
@ -331,7 +361,8 @@ func NewCamera() *Camera {
func Ray_color(r Ray, world *Hittable) Vec3 {
var rec Hit_record
if (world.Hit(&r, *NewInterval(0, float32(math.Inf(1))), &rec)) {
return rec.normal.Add(NewColor(1,1,1)).Mult(0.5)
direction := RandomOnHemisphere(rec.normal)
return Ray_color(*((NewRay(rec.p, direction))), world).Mult(0.5)
}
unit_direction := Unit_vector(r.Direction())
a := (unit_direction.Y() + 1.0)*0.5
@ -418,7 +449,7 @@ func main() {
cam := NewCamera()
cam.aspect_ratio = 16.0 / 9.0
cam.image_width = 400
cam.samples_per_pixel = 100
cam.samples_per_pixel = 50
cam.Render(world)
// INFO: The pixels are written out in rows.
// Image file can be created with