Initial revision

source/blender/imbuf/intern/rotate.c

@@ -0,0 +1,71 @@
+/**
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ * rotate.c
+ *
+ * $Id$
+ */
+
+#ifdef WIN32
+#include "BLI_winstuff.h"
+#endif
+#include "BLI_blenlib.h"
+
+#include "imbuf.h"
+#include "imbuf_patch.h"
+#include "IMB_imbuf_types.h"
+#include "IMB_imbuf.h"
+
+#include "IMB_allocimbuf.h"
+
+void IMB_flipy(struct ImBuf * ibuf)
+{
+	short x,y,backx;
+	unsigned int *top,*bottom,temp;
+
+	if (ibuf == 0) return;
+	if (ibuf->rect == 0) return;
+
+	x = ibuf->x;
+	y = ibuf->y;
+	backx = x<<1;
+
+	top = ibuf->rect;
+	bottom = top + ((y-1) * x);
+	y >>= 1;
+
+	for(;y>0;y--){
+		for(x = ibuf->x; x > 0; x--){
+			temp = *top;
+			*(top++) = *bottom;
+			*(bottom++) = temp;
+		}
+		bottom -= backx;
+	}
+}