Fix aliasing bug in Matrix3x2.scaleAround()

JOML-CI · Nov 12, 2020 · 424d180 · 424d180
1 parent 407eabd
commit 424d180
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/src/org/joml/Matrix3x2d.java b/src/org/joml/Matrix3x2d.java
@@ -1462,8 +1462,8 @@ public Matrix3x2d scaleAround(double sx, double sy, double ox, double oy, Matrix
         dest.m01 = m01 * sx;
         dest.m10 = m10 * sy;
         dest.m11 = m11 * sy;
-        dest.m20 = -m00 * ox - m10 * oy + nm20;
-        dest.m21 = -m01 * ox - m11 * oy + nm21;
+        dest.m20 = dest.m00 * -ox + dest.m10 * -oy + nm20;
+        dest.m21 = dest.m01 * -ox + dest.m11 * -oy + nm21;
         return dest;
     }
 

diff --git a/src/org/joml/Matrix3x2f.java b/src/org/joml/Matrix3x2f.java
@@ -1400,8 +1400,8 @@ public Matrix3x2f scaleAround(float sx, float sy, float ox, float oy, Matrix3x2f
         dest.m01 = m01 * sx;
         dest.m10 = m10 * sy;
         dest.m11 = m11 * sy;
-        dest.m20 = -m00 * ox - m10 * oy + nm20;
-        dest.m21 = -m01 * ox - m11 * oy + nm21;
+        dest.m20 = dest.m00 * -ox + dest.m10 * -oy + nm20;
+        dest.m21 = dest.m01 * -ox + dest.m11 * -oy + nm21;
         return dest;
     }