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fix affine in a better way

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argh this time
This commit is contained in:
John Cupitt 2014-06-18 12:34:20 +01:00
parent d01beb5411
commit 5e57c13af7
1 changed files with 8 additions and 4 deletions
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12
libvips/resample/affine.c
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@ -355,7 +355,10 @@ vips_affine_gen( VipsRegion *or, void *seq, void *a, void *b, gboolean *stop )
/* Clipping!
*/
if( fx < ile || fx >= iri || fy < ito || fy >= ibo ) {
if( fx < ile ||
fx > iri ||
fy < ito ||
fy > ibo ) {
for( z = 0; z < ps; z++ )
q[z] = 0;
}
@ -416,8 +419,8 @@ vips_affine_build( VipsObject *object )
window_offset =
vips_interpolate_get_window_offset( affine->interpolate );
affine->trn.iarea.left = 0;
affine->trn.iarea.top = 0;
affine->trn.iarea.left = window_offset;
affine->trn.iarea.top = window_offset;
affine->trn.iarea.width = in->Xsize;
affine->trn.iarea.height = in->Ysize;
affine->trn.a = ((double *) affine->matrix->data)[0];
@ -457,7 +460,8 @@ vips_affine_build( VipsObject *object )
* output space inside INT_MAX / TRANSFORM_SCALE.
*/
edge = INT_MAX / VIPS_TRANSFORM_SCALE;
if( affine->trn.oarea.left < -edge || affine->trn.oarea.top < -edge ||
if( affine->trn.oarea.left < -edge ||
affine->trn.oarea.top < -edge ||
VIPS_RECT_RIGHT( &affine->trn.oarea ) > edge ||
VIPS_RECT_BOTTOM( &affine->trn.oarea ) > edge ) {
vips_error( class->nickname,