On Tuesday 09 April 2002 4:24 pm, Herbert Voss wrote:
> Angus Leeming wrote:
> > Alternatively, rotate it by 270.1 degs.
>
> this is not possible yet, only 4 characters. I'll send a
> fix together with some other more or less small changes
>
>
> Herbert
and just to show we really are nice people, this patch should fix your xforms
library!
Not tested of course...
Angus
--- image_rotate.c Mon Apr 1 18:51:21 2002
+++ image_rotate.c_new Tue Apr 9 15:31:03 2002
@@ -226,7 +226,8 @@
int nrow = row, ncol = col;
void *mm;
- if (deg == 90 || deg == -90)
+ /* deg lies in the range 0 <= deg < 360 */
+ if (deg == 90 || deg == 270)
{
nrow = col;
ncol = row;
@@ -235,29 +236,29 @@
if (!(mm = fl_get_matrix(nrow, ncol, e)))
return 0;
- if (deg == 90)
- {
+ switch (deg) {
+ case 90:
if (e == 2)
DO_90(unsigned short, mm, m);
else
DO_90(unsigned char, mm, m);
- }
- else if (deg == -90)
- {
- if (e == 2)
- DO_M90(unsigned short, mm, m);
- else
- DO_M90(unsigned char, mm, m);
- }
- else if (deg == 180 || deg == -180)
- {
+ break;
+
+ case 180:
if (e == 2)
DO_180(unsigned short, mm, m);
else
DO_180(unsigned char, mm, m);
- }
- else
- {
+ break;
+
+ case 270:
+ if (e == 2)
+ DO_M90(unsigned short, mm, m);
+ else
+ DO_M90(unsigned char, mm, m);
+ break;
+
+ default:
M_err("RotateMatrix", "InternalError: bad special angle\n");
return 0;
}
