Add h3d.scene.Sphere

h3d/scene/Sphere.hx

@@ -0,0 +1,54 @@
+package h3d.scene;
+
+class Sphere extends Graphics {
+
+	public var color : Int;
+	public var radius(default, set) : Float;
+
+	public function new( ?color = 0xFFFF0000, ?radius : Float=1.0, ?depth = true, ?parent) {
+		super(parent);
+		this.color = color;
+		this.radius = radius;
+		if( !depth ) material.mainPass.depth(true, Always);
+	}
+
+	function set_radius(v: Float) {
+		this.radius = v;
+		refresh();
+		return v;
+	}
+
+	function refresh() {
+		clear();
+		lineStyle(1, color);
+
+		var nsegments = 32;
+
+		inline function circle(f) {
+			for(i in 0...nsegments) {
+				var c = hxd.Math.cos(i / (nsegments - 1) * hxd.Math.PI * 2.0) * radius;
+				var s = hxd.Math.sin(i / (nsegments - 1) * hxd.Math.PI * 2.0) * radius;
+				f(i, c, s);
+			}
+		}
+		inline function seg(i, x, y, z) {
+			if(i == 0)
+				moveTo(x, y, z);
+			else
+				lineTo(x, y, z);
+		}
+
+		circle((i, c, s) -> seg(i, c, s, 0));
+		circle((i, c, s) -> seg(i, 0, c, s));
+		circle((i, c, s) -> seg(i, c, 0, s));
+	}
+
+	override function getLocalCollider() {
+		return null;
+	}
+
+	override function sync(ctx) {
+		super.sync(ctx);
+	}
+
+}