[gimp] app: Fix ceil/floor amplifying errors in transform size calculation

[Alexia Death <alexiade src gnome org>]

commit 9ed712ddc460c6b1b6b6169933a3d513bef8bf76
Author: Alexia Death <alexiadeath gmail com>
Date:   Thu Apr 8 00:29:09 2010 +0300

    app: Fix ceil/floor amplifying errors  in transform size calculation

 app/core/gimpbrush-transform.c |   14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)
---
diff --git a/app/core/gimpbrush-transform.c b/app/core/gimpbrush-transform.c
index d971f67..16a1726 100644
--- a/app/core/gimpbrush-transform.c
+++ b/app/core/gimpbrush-transform.c
@@ -682,21 +682,27 @@ gimp_brush_transform_bounding_box (TempBuf           *brush,
   const gdouble  h = brush->height;
   gdouble        x1, x2, x3, x4;
   gdouble        y1, y2, y3, y4;
+  gdouble        temp_x;
+  gdouble        temp_y;
 
   gimp_matrix3_transform_point (matrix, 0, 0, &x1, &y1);
   gimp_matrix3_transform_point (matrix, w, 0, &x2, &y2);
   gimp_matrix3_transform_point (matrix, 0, h, &x3, &y3);
   gimp_matrix3_transform_point (matrix, w, h, &x4, &y4);
 
-  *x = floor (MIN (MIN (x1, x2), MIN (x3, x4)));
-  *y = floor (MIN (MIN (y1, y2), MIN (y3, y4)));
+  temp_x = MIN (MIN (x1, x2), MIN (x3, x4));
+  temp_y = MIN (MIN (y1, y2), MIN (y3, y4));
 
-  *width  = (gint) (ceil  (MAX (MAX (x1, x2), MAX (x3, x4))) - *x);
-  *height = (gint) (ceil  (MAX (MAX (y1, y2), MAX (y3, y4))) - *y);
+  *width  = (gint) ceil (MAX (MAX (x1, x2), MAX (x3, x4)) - temp_x);
+  *height = (gint) ceil (MAX (MAX (y1, y2), MAX (y3, y4)) - temp_y);
+
+  *x = floor (temp_x);
+  *y = floor (temp_y);
 
   /* Transform size can not be less than 1 px */
   *width  = MAX(1, *width);
   *height = MAX(1, *height);
+
 }
 
 static gdouble