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Added missing static methods to Matrix4f for consistency. Cleaned up handling of src == dest aliasing

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This commit is contained in:
Elias Naur 2006-06-16 12:44:53 +00:00
parent dbf9356358
commit 09001cb925
3 changed files with 369 additions and 366 deletions
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6
src/java/org/lwjgl/util/vector/Matrix2f.java
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@ -76,7 +76,7 @@ public class Matrix2f extends Matrix implements Serializable {
* Copy the source matrix to the destination matrix.
* @param src The source matrix
* @param dest The destination matrix, or null if a new one should be created.
* @return dest
* @return The copied matrix
*/
public static Matrix2f load(Matrix2f src, Matrix2f dest) {
if (dest == null)
@ -286,14 +286,14 @@ public class Matrix2f extends Matrix implements Serializable {
* @return The inverted matrix, or null if source can't be reverted.
*/
public static Matrix2f invert(Matrix2f src, Matrix2f dest) {
if (dest == null)
dest = new Matrix2f();
/*
*inv(A) = 1/det(A) * adj(A);
*/
float determinant = src.determinant();
if (determinant != 0) {
if (dest == null)
dest = new Matrix2f();
float determinant_inv = 1f/determinant;
float t00 = src.m11*determinant_inv;
float t01 = -src.m01*determinant_inv;