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App/util/UDim.h

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+/* Copyright 2003-2009 ROBLOX Corporation, All Rights Reserved */
+
+#pragma once
+
+#include "Util/G3DCore.h"
+
+namespace RBX {
+
+	// A utility class for holding a "Universal Dimensions", containing both a
+	// relative 'scale' and an absolute 'offset'
+	class UDim
+	{
+	public:
+		float scale;
+		G3D::int16 offset;
+
+		UDim(float scale, G3D::int16 offset)
+			:scale(scale)
+			,offset(offset){}
+		UDim()
+			:scale(0.0f)
+			,offset(0){}
+
+		float transform(const float value) const;
+		G3D::int16 transform(G3D::int16 value) const;
+		// Assignment
+		UDim& operator=(const UDim& other)
+		{
+			scale = other.scale;
+			offset = other.offset;
+			return *this;
+		}
+		bool operator==(const UDim& other) const {
+			return scale==other.scale && offset==other.offset;
+		}
+		bool operator!=(const UDim& other) const {
+			return scale!=other.scale || offset!=other.offset;
+		}
+		UDim operator*(const G3D::int16 rhs) const;
+		UDim operator*(const float rhs) const;
+
+		UDim operator+ (const UDim& v) const;
+		UDim operator- (const UDim& v) const;
+		UDim operator- () const;
+	};
+
+	class UDim2
+	{
+	public:
+		UDim x;
+		UDim y;
+
+		UDim2()
+			:x()
+			,y()
+		{}
+		UDim2(UDim x, UDim y)
+			:x(x)
+			,y(y){}
+		UDim2(float scaleX, int offsetX, float scaleY, int offsetY)
+			:x(scaleX,offsetX)
+			,y(scaleY,offsetY){}
+
+		// Assignment
+		UDim2& operator=(const UDim2& other)
+		{
+			x = other.x;
+			y = other.y;
+			return *this;
+		}
+		bool operator==(const UDim2& other) const {
+			return x == other.x && y == other.y;
+		}
+		bool operator!=(const UDim2& other) const {
+			return x!=other.x || y!=other.y;
+		}
+
+		G3D::Vector2int16 operator*(const G3D::Vector2int16 rhs) const;
+		G3D::Vector2 operator*(const G3D::Vector2 rhs) const;
+		UDim2 operator* (float v) const;
+		UDim2 operator+ (const UDim2& v) const;
+		UDim2 operator- (const UDim2& v) const;
+		UDim2 operator- () const;
+
+
+		const UDim& operator[] (int i) const {
+			switch(i){
+				case 1:
+					return y;
+				case 0: 
+				default:
+					return x;
+			}
+		}
+		UDim& operator[] (int i){
+			switch(i){
+				case 1:
+					return y;
+				case 0: 
+				default:
+					return x;
+			}
+		}
+	};
+
+}  // namespace RBX