Implement kmVec2Assign

Kazade · Apr 1, 2012 · af9f66b · af9f66b
1 parent e25d39d
commit af9f66b
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diff --git a/kazmath/vec2.c b/kazmath/vec2.c
@@ -116,3 +116,18 @@ int kmVec2AreEqual(const kmVec2* p1, const kmVec2* p2)
 				(p1->y < p2->y + kmEpsilon && p1->y > p2->y - kmEpsilon)
 			);
 }
+
+/**
+ * Assigns pIn to pOut. Returns pOut. If pIn and pOut are the same
+ * then nothing happens but pOut is still returned
+ */
+kmVec2* kmVec2Assign(kmVec2* pOut, const kmVec2* pIn) {
+	if (pOut == pIn) {
+		return pOut;
+	}
+
+	pOut->x = pIn->x;
+	pOut->y = pIn->y;
+
+	return pOut;
+}
diff --git a/kazmath/vec2.h b/kazmath/vec2.h
@@ -44,6 +44,7 @@ typedef struct kmVec2 {
 #ifdef __cplusplus
 extern "C" {
 #endif
+
 kmVec2* kmVec2Fill(kmVec2* pOut, kmScalar x, kmScalar y);
 kmScalar kmVec2Length(const kmVec2* pIn); ///< Returns the length of the vector
 kmScalar kmVec2LengthSq(const kmVec2* pIn); ///< Returns the square of the length of the vector
@@ -55,6 +56,7 @@ kmVec2* kmVec2Transform(kmVec2* pOut, const kmVec2* pV1, const struct kmMat3* pM
 kmVec2* kmVec2TransformCoord(kmVec2* pOut, const kmVec2* pV, const struct kmMat3* pM); ///<Transforms a 2D vector by a given matrix, projecting the result back into w = 1.
 kmVec2* kmVec2Scale(kmVec2* pOut, const kmVec2* pIn, const kmScalar s); ///< Scales a vector to length s
 int	kmVec2AreEqual(const kmVec2* p1, const kmVec2* p2); ///< Returns 1 if both vectors are equal
+kmVec2* kmVec2Assign(kmVec2* pOut, const kmVec2* pIn);
 
 #ifdef __cplusplus
 }