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

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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
This commit is contained in:
Mark Crichton 1999-07-20 19:30:08 +00:00
parent 8194b3483b
commit 276ec82df5
2 changed files with 10 additions and 3 deletions
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4
gdk-pixbuf/ChangeLog
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@ -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>

9
gdk-pixbuf/gdk-pixbuf.c
View File

@ -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);