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Added divide by zero check (Jon Perry). Remove dead vars. Fix indentation.

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This commit is contained in:
Brian Paul 2002-06-30 16:58:11 +00:00
parent c2fa38d5ae
commit 89f9cf8add
1 changed files with 16 additions and 16 deletions
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32
src/glu/sgi/libnurbs/internals/slicer.cc
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@ -35,8 +35,8 @@
/*
* slicer.c++
*
* $Date: 2001/05/01 14:56:00 $ $Revision: 1.2 $
* $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/slicer.cc,v 1.2 2001/05/01 14:56:00 brianp Exp $
* $Date: 2002/06/30 16:58:11 $ $Revision: 1.3 $
* $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/slicer.cc,v 1.3 2002/06/30 16:58:11 brianp Exp $
*/
#include <stdlib.h>
@ -309,7 +309,6 @@ static void triangulateRectAux(PwlArc* top, PwlArc* bot, PwlArc* left, PwlArc* r
static void triangulateRect(Arc_ptr loop, Backend& backend, int TB_or_LR, int ulinear, int vlinear)
{
int i;
//we know the loop is a rectangle, but not sure which is top
Arc_ptr top, bot, left, right;
if(loop->tail()[1] == loop->head()[1])
@ -572,8 +571,6 @@ static void triangulateRectCenter(int n_ulines, REAL* u_val,
int n_vlines, REAL* v_val,
Backend& backend)
{
TrimVertex trimVert;
trimVert.nuid = 0;//????
// XXX this code was patched by Diego Santa Cruz <Diego.SantaCruz@epfl.ch>
// to fix a problem in which glMapGrid2f() was called with bad parameters.
@ -1075,18 +1072,21 @@ void Slicer::slice_new(Arc_ptr loop)
mydu = (du>0)? du: -du;
mydv = (dv>0)? dv: -dv;
for(Arc_ptr jarc=loop->next; jarc != loop; jarc = jarc->next)
{
for(Arc_ptr jarc=loop->next; jarc != loop; jarc = jarc->next)
{
if(jarc->tail()[0] < uMin)
uMin = jarc->tail()[0];
if(jarc->tail()[0] > uMax)
uMax = jarc->tail()[0];
if(jarc->tail()[1] < vMin)
vMin = jarc->tail()[1];
if(jarc->tail()[1] > vMax)
vMax = jarc->tail()[1];
}
if(jarc->tail()[0] < uMin)
uMin = jarc->tail()[0];
if(jarc->tail()[0] > uMax)
uMax = jarc->tail()[0];
if(jarc->tail()[1] < vMin)
vMin = jarc->tail()[1];
if(jarc->tail()[1] > vMax)
vMax = jarc->tail()[1];
}
if (uMax == uMin)
return; // prevent divide-by-zero. Jon Perry. 17 June 2002
if(mydu > uMax - uMin)
num_ulines = 2;