Beefy2D updates

BeefLibs/Beefy2D/src/Utils.bf

@@ -481,6 +481,7 @@ namespace Beefy
 		public static Image GetAnimFrame(Image[] images, float pct)
 		{
 			int frameNum = (int)(images.Count * (pct - 0.000001f));
+			frameNum %= images.Count;
 			return images[frameNum];
 		}
     }        

BeefLibs/Beefy2D/src/geom/Vector2.bf

@@ -109,6 +109,11 @@ namespace Beefy.geom
             return Vector2((float)Math.Cos(angle) * length, (float)Math.Sin(angle) * length);
         }
 
+		public static Vector2 operator -(Vector2 vec1)
+		{
+		    return Vector2(-vec1.mX, -vec1.mY);
+		}
+
         public static Vector2 operator +(Vector2 vec1, Vector2 vec2)
         {
             return Vector2(vec1.mX + vec2.mX, vec1.mY + vec2.mY);

BeefLibs/Beefy2D/src/gfx/Matrix.bf

@@ -168,6 +168,11 @@ namespace Beefy.gfx
             return Point(tx + a * point.x + c * point.y, ty + b * point.x + d * point.y);
         }
 
+		public Vector2 Multiply(Vector2 point)
+		{
+		    return Vector2(tx + a * point.mX + c * point.mY, ty + b * point.mX + d * point.mY);
+		}
+
         public void Invert() mut
         {
             float _a = a;

BeefLibs/Beefy2D/src/widgets/Widget.bf

@@ -633,7 +633,7 @@ namespace Beefy.widgets
 
             if (targetWidget.mParent == mParent)
             {
-                mParent.ParentToSelfTranslate(transX, transY, out transX, out transY);
+                targetWidget.ParentToSelfTranslate(transX, transY, out transX, out transY);
                 return;
             }