11.15

source/core/include/math/dvc_matrix3.h

@@ -94,6 +94,45 @@ public:
 	template<typename U> 
 	friend TMatrix3<U> operator * (U fScalar, const TMatrix3<U>& rkMatrix);
 
+public:
+	static inline TMatrix3 makeTrans(T x, T y) {
+		return TMatrix3(
+			1, 0, x,
+			0, 1, y,
+			0, 0, 1);
+	}
+	
+	static inline TMatrix3 makeTrans(const TVector2<T>& pos) {
+		return TMatrix3(
+			1, 0, pos.x,
+			0, 1, pos.y,
+			0, 0, 1);
+	}
+
+	static inline TMatrix3 makeScale(T x, T y) {
+		return TMatrix3(
+			x, 0, 0,
+			0, y, 0,
+			0, 0, 1);
+	}
+
+	static inline TMatrix3 makeScale(const TVector2<T>& scale) {
+		return TMatrix3(
+			scale.x,	0,			0,
+			0,			scale.y,	0,
+			0,			0,			1);
+	}
+
+	//2D rotate, left multiplication 
+	static inline TMatrix3 makeRotate(T angle) {
+		T s = sin(angle);
+		T c = cos(angle);
+		return TMatrix3(
+			c, -s, 0,
+			s, c, 0,
+			0, 0, 1);
+	}
+
 public:
 	// Utilities