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Very slightly loosen some asserts by adding FLT_MIN tolerance #81

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Merged
memononen merged 1 commit into from
Oct 7, 2025
Merged

Very slightly loosen some asserts by adding FLT_MIN tolerance #81

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14 changes: 9 additions & 5 deletions Source/sweep.c
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
*/

#include <assert.h>
#include <float.h>
#include <stddef.h>
#include <setjmp.h> /* longjmp */

Expand Down Expand Up @@ -605,11 +606,14 @@ static int CheckForIntersect( TESStesselator *tess, ActiveRegion *regUp )
DebugEvent( tess );

tesedgeIntersect( dstUp, orgUp, dstLo, orgLo, &isect );
/* The following properties are guaranteed: */
assert( MIN( orgUp->t, dstUp->t ) <= isect.t );
assert( isect.t <= MAX( orgLo->t, dstLo->t ));
assert( MIN( dstLo->s, dstUp->s ) <= isect.s );
assert( isect.s <= MAX( orgLo->s, orgUp->s ));
/*
* The following properties are guaranteed (with a little wiggle-room to
* account for loss of precision if the values are subnormal.)
*/
assert( MIN( orgUp->t, dstUp->t ) <= isect.t + FLT_MIN);
assert( isect.t <= MAX( orgLo->t, dstLo->t ) + FLT_MIN);
assert( MIN( dstLo->s, dstUp->s ) <= isect.s + FLT_MIN);
assert( isect.s <= MAX( orgLo->s, orgUp->s ) + FLT_MIN);

if( VertLeq( &isect, tess->event )) {
/* The intersection point lies slightly to the left of the sweep line,
Expand Down