Materials

material.go

@@ -0,0 +1,62 @@
+package main
+
+type Color interface {
+	GetColor(Vector3) Vector3
+}
+
+// Ambre je te copie
+type Material struct {
+	diffuseColor    Color
+	diffuseFac      float64
+	specularColor   Color
+	specularFac     float64
+	specularExp     float64
+	reflectanceFac  float64
+	reflectanceTint Color
+	refractFac      float64
+	refractIndice   float64
+}
+
+func DefaultMaterial(diffuseColor Color) Material {
+	return Material{
+		diffuseColor:    diffuseColor,
+		diffuseFac:      1.0,
+		specularColor:   Vector3{1.0, 1.0, 1.0},
+		specularFac:     0.5,
+		specularExp:     32.0,
+		reflectanceFac:  0.0,
+		reflectanceTint: Vector3{1.0, 1.0, 1.0},
+		refractFac:      0.0,
+		refractIndice:   1.0,
+	}
+}
+
+func MixMat(mat1 Material, mat2 Material, t float64, p Vector3) Material {
+	return Material{
+		mat1.diffuseColor.GetColor(p).Scale(1 - t).Add((mat2.diffuseColor.GetColor(p)).Scale(t)),
+		(mat1.diffuseFac*(1-t) + mat2.diffuseFac) * t,
+		mat1.specularColor.GetColor(p).Scale(1 - t).Add((mat2.specularColor.GetColor(p)).Scale(t)),
+		(mat1.specularFac*(1-t) + mat2.specularFac) * t,
+		(mat1.specularExp*(1-t) + mat2.specularExp) * t,
+		(mat1.reflectanceFac*(1-t) + mat2.reflectanceFac) * t,
+		mat1.reflectanceTint.GetColor(p).Scale(1 - t).Add((mat2.reflectanceTint.GetColor(p)).Scale(t)),
+		(mat1.refractFac*(1-t) + mat2.refractFac) * t,
+		(mat1.refractIndice*(1-t) + mat2.refractIndice) * t,
+	}
+}
+
+// Colors
+
+var RED = Vector3{255, 0, 0}
+var GREEN = Vector3{0, 255, 0}
+var BLUE = Vector3{0, 0, 255}
+var WHITE = Vector3{255, 255, 255}
+var GREY = Vector3{127, 127, 127}
+
+// Materials
+
+var RED_MAT = DefaultMaterial(RED)
+var GREEN_MAT = DefaultMaterial(GREEN)
+var BLUE_MAT = DefaultMaterial(BLUE)
+var WHITE_MAT = DefaultMaterial(WHITE)
+var GREY_MAT = DefaultMaterial(GREY)