Materials

primitives_sdf.go

@@ -2,33 +2,33 @@ package main
 
 // Sphere
 type Sphere struct {
-	center Vector3
-	radius float64
-	color  Color
+	center   Vector3
+	radius   float64
+	material Material
 }
 
-func (s Sphere) Distance(p Vector3) (float64, Color) {
-	return p.Sub(s.center).Length() - s.radius, s.color
+func (s Sphere) Distance(p Vector3) (float64, Material) {
+	return p.Sub(s.center).Length() - s.radius, s.material
 }
 
 // Box
 type Box struct {
 	center     Vector3
 	dimensions Vector3
-	color      Color
+	material   Material
 }
 
-func (s Box) Distance(p Vector3) (float64, Color) {
+func (s Box) Distance(p Vector3) (float64, Material) {
 	q := p.Sub(s.center).Abs().Sub(s.dimensions)
-	return q.Max(0.0).Length() + min(max(q.X, max(q.Y, q.Z)), 0.0), s.color
+	return q.Max(0.0).Length() + min(max(q.X, max(q.Y, q.Z)), 0.0), s.material
 }
 
 type Plane struct {
-	normal Vector3
-	height float64
-	color  Color
+	normal   Vector3
+	height   float64
+	material Material
 }
 
-func (s Plane) Distance(p Vector3) (float64, Color) {
-	return p.Dot(s.normal) + s.height, s.color
+func (s Plane) Distance(p Vector3) (float64, Material) {
+	return p.Dot(s.normal) - s.height, s.material
 }