GEEKING

App/include/util/Region2.h

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+/* Copyright 2003-2005 ROBLOX Corporation, All Rights Reserved */
+#pragma once
+
+#include "Util/Rect.h"
+#include "rbx/Debug.h"
+#include "Util/Math.h"
+
+namespace RBX {
+
+	class Adorn;
+
+	class Region2 {
+	public:
+		class WeightedPoint {
+		public:
+			Vector2 point;
+			float radius;
+
+			WeightedPoint()
+				: point(Vector2::zero())
+				, radius(0.0f)
+			{}
+
+			WeightedPoint(const Vector2& point, const float radius)
+				: point(point)
+				, radius(radius)
+			{}
+		};
+
+	private:
+		WeightedPoint owner;
+		G3D::Array<WeightedPoint> others;
+
+		bool findCloserOther(const Vector2& point, const float slop) const;
+
+	public:
+		void clearEmpty() {
+			owner = WeightedPoint();
+			others.fastClear();
+		}
+
+		bool isEmpty() const {
+			return (owner.radius <= 0.0f);
+		}
+
+		Region2() 
+		{}
+
+		~Region2() {}
+
+		void setOwner(const WeightedPoint& _owner) {
+			owner = _owner;
+		}
+
+		void appendOther(const WeightedPoint& _other) {
+			others.append(_other);
+		}
+
+		bool contains(const Vector2& pos2d, const float slop) const;
+
+		static float getRelativeError(const Vector2& pos2d, const WeightedPoint& owner);		// go through all owner points - find best one
+
+		static bool pointInRange(const Vector2& pos2d, const WeightedPoint& owner, const float slop);
+
+		static bool closerToOtherPoint(	const Vector2& pos2d,
+										const WeightedPoint& owner,
+										const WeightedPoint& other,
+										float slop);
+	};
+}