1 files changed, 5 insertions, 0 deletions
diff --git a/color.go b/color.go
index c710c75..2bee0af 100644
--- a/color.go
+++ b/color.go
@@ -15,3 +15,8 @@ func LinearBlend(color1 Color, color2 Color, param float64) Color {
 		param*color1.b + (1.0-param)*color2.b,
 	}
 }
+
+func RayColor(ray Ray) Color {
+	param := 0.5 * (ray.direction.Unit().y + 1)
+	return LinearBlend(Color{0.5, 0.7, 1.0}, Color{1.0, 1.0, 1.0}, param)
+}