From: Christophe CURIS <christophe.curis@free.fr>
Date: Sun, 16 Jun 2013 19:51:02 +0000 (+0200)
Subject: WRaster: Changed formula for reconverting angle to the (0-360) bounds
X-Git-Tag: wmaker-0.95.5~13
X-Git-Url: https://repo.or.cz/w/wmaker-crm.git/commitdiff_plain/7bf8efef5423a45f8cb3ffabeeb2754188460a44

WRaster: Changed formula for reconverting angle to the (0-360) bounds

There is a dedicaded floating point modulo operator that does a
better job (faster, no precision loss), so we use it instead of the
complicated formula that uses type conversions.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
---

diff --git a/wrlib/rotate.c b/wrlib/rotate.c
index d296815a..f04b95eb 100644
--- a/wrlib/rotate.c
+++ b/wrlib/rotate.c
@@ -52,7 +52,9 @@ RImage *RRotateImage(RImage * image, float angle)
 	 */
 	static const float min_usable_angle = 0.00699;
 
-	angle = ((int)angle % 360) + (angle - (int)angle);
+	angle = fmod(angle, 360.0);
+	if (angle < 0.0)
+		angle += 360.0;
 
 	if (angle < min_usable_angle) {
 		/* Rotate by 0 degree */