More fixes to the rotation code. It really works well now. Now we need to

More fixes to the rotation code.  It really works well now.  Now we need
to fix the "clipping when rotating" problem if it is a real issue.

Mark

diff --git a/gdk-pixbuf/ChangeLog b/gdk-pixbuf/ChangeLog
index fbff919043eb92c06ae7ef420c20fa7a03af6a37..a798f6c44b7b0c3178ad403b61fa279236a87810 100644 (file)
--- a/gdk-pixbuf/ChangeLog
+++ b/gdk-pixbuf/ChangeLog
@@ -1,7 +1,7 @@
 1999-07-20  Mark Crichton  <crichton@gimp.org>
 
-       * src/gdk-pixbuf.c (gdk_pixbuf_rotate): Added translation to recenter
-       the pixbuf.  Unfortunately, it doesn't work right yet.
+       * src/gdk-pixbuf.c (gdk_pixbuf_rotate): Fixed rotation.  Now a bbox
+       calculation needs to be done.
 
 1999-07-18  Larry Ewing  <lewing@gimp.org>
 

diff --git a/gdk-pixbuf/gdk-pixbuf.c b/gdk-pixbuf/gdk-pixbuf.c
index 589d72fcba906f9b406fda0e31885b0c37c0f5c0..c786c1ddf7a1e29ce7ee2bb582833198bf8a67a5 100644 (file)
--- a/gdk-pixbuf/gdk-pixbuf.c
+++ b/gdk-pixbuf/gdk-pixbuf.c
@@ -100,10 +100,17 @@ gdk_pixbuf_rotate (GdkPixBuf *pixbuf, gdouble angle)
      rot[3] = cos(rad);
      rot[4] = rot[5] = 0;
 
+     trans[0] = trans[3] = 1;
+     trans[1] = trans[2] = 0;
+     trans[4] = -(double)w / 2.0;
+     trans[5] = -(double)h / 2.0;
+
+     art_affine_multiply(rot, trans, rot);
+
      trans[0] = trans[3] = 1;
      trans[1] = trans[2] = 0;
      trans[4] = (double)w / 2.0;
-     trans[5] = 0;
+     trans[5] = (double)h / 2.0;
 
      art_affine_multiply(affine, rot, trans);