package iron.object;

import iron.math.Vec4;

class FrustumPlane {
	public var normal = new Vec4(1.0, 0.0, 0.0);
	public var constant = 0.0;

	public function new() {}

	public function normalize() {
		var inverseNormalLength = 1.0 / normal.length();
		normal.mult(inverseNormalLength);
		constant *= inverseNormalLength;
	}

	public function distanceToSphere(sphereCenter: Vec4, sphereRadius: Float): Float {
		return (normal.dot(sphereCenter) + constant) - sphereRadius;
	}

	public inline function setComponents(x: Float, y: Float, z: Float, w: Float) {
		normal.set(x, y, z);
		constant = w;
	}
}