X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=src%2FMoof%2FMath.hh;h=6665a195bc0341f0acb629d4e036bea95efd0c19;hb=fcb40aa40c6a13ca0e0962b35973ac4574779574;hp=4e1cda8c1a25f3a4f57cffe616a56564040f45f6;hpb=493ddb59a8620b49dfa0ff62ce93395ebfd02e86;p=chaz%2Fyoink

diff --git a/src/Moof/Math.hh b/src/Moof/Math.hh
index 4e1cda8..6665a19 100644
--- a/src/Moof/Math.hh
+++ b/src/Moof/Math.hh
@@ -49,6 +49,8 @@ typedef cml::vector< Scalar, cml::fixed<2> >	Vector2;
 typedef cml::vector< Scalar, cml::fixed<3> >	Vector3;
 typedef cml::vector< Scalar, cml::fixed<4> >	Vector4;
 
+typedef cml::matrix< Scalar, cml::fixed<2,2>,
+		cml::col_basis, cml::col_major >		Matrix2;
 typedef cml::matrix< Scalar, cml::fixed<3,3>,
 		cml::col_basis, cml::col_major >		Matrix3;
 typedef cml::matrix< Scalar, cml::fixed<4,4>,
@@ -60,21 +62,24 @@ typedef cml::quaternion< Scalar, cml::fixed<>, cml::vector_first,
 typedef cml::constants<Scalar>					Constants;
 
 
-inline Vector3& demoteVector(Vector3& left, const Vector4& right)
+inline Vector3 demote(const Vector4& vec)
 {
-	left[0] = right[0];
-	left[1] = right[1];
-	left[2] = right[2];
-	return left;
+	return Vector3(vec[0], vec[1], vec[2]);
 }
 
-inline Vector4& promoteVector(Vector4& left, const Vector3& right)
+inline Vector2 demote(const Vector3& vec)
 {
-	left[0] = right[0];
-	left[1] = right[1];
-	left[2] = right[2];
-	left[3] = 1.0;
-	return left;
+	return Vector2(vec[0], vec[1]);
+}
+
+inline Vector4 promote(const Vector3& vec, Scalar extra = 1.0)
+{
+	return Vector4(vec[0], vec[1], vec[2], extra);
+}
+
+inline Vector3 promote(const Vector2& vec, Scalar extra = 1.0)
+{
+	return Vector3(vec[0], vec[1], extra);
 }
 
 
@@ -85,7 +90,7 @@ const Scalar EPSILON = 0.000001;
  * Check the equality of scalars with a certain degree of error allowed.
  */
 
-inline bool checkEquality(Scalar a, Scalar b, Scalar epsilon = EPSILON)
+inline bool isEqual(Scalar a, Scalar b, Scalar epsilon = EPSILON)
 {
 	return std::abs(a - b) < epsilon;
 }