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Add support for 45° rotation.

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This commit is contained in:
Yoan Blanc 2016-08-25 15:28:15 +02:00
parent 66f3ccc217
commit 00fee003f7
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GPG key ID: 6058CF4574298812
4 changed files with 44 additions and 10 deletions
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20
vips.h
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@ -121,15 +121,31 @@ int
vips_rotate(VipsImage *in, VipsImage **out, int angle) {
int rotate = VIPS_ANGLE_D0;
if (angle == 90) {
angle %= 360;
if (angle == 45) {
rotate = VIPS_ANGLE45_D45;
} else if (angle == 90) {
rotate = VIPS_ANGLE_D90;
} else if (angle == 135) {
rotate = VIPS_ANGLE45_D135;
} else if (angle == 180) {
rotate = VIPS_ANGLE_D180;
} else if (angle == 225) {
rotate = VIPS_ANGLE45_D225;
} else if (angle == 270) {
rotate = VIPS_ANGLE_D270;
} else if (angle == 315) {
rotate = VIPS_ANGLE45_D315;
} else {
angle = 0;
}
return vips_rot(in, out, rotate, NULL);
if (angle > 0 && angle % 90 != 0) {
return vips_rot45(in, out, "angle", rotate, NULL);
} else {
return vips_rot(in, out, rotate, NULL);
}
}
int