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Fix division by zero case in dualcon.

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This commit is contained in:
Nicholas Bishop 2012-05-08 22:11:16 +00:00
parent 56342f222f
commit d93a935965
1 changed files with 8 additions and 10 deletions
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18
intern/dualcon/intern/Projections.h
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@ -783,19 +783,17 @@ float getIntersectionPrimary(int edgeInd)
LONG proj0 = cubeProj[i][0];
LONG proj1 = cubeProj[i][0] + cubeProj[i][edgeInd + 1];
LONG proj2 = inherit->trigProj[i][1];
LONG d = proj1 - proj0;
double alpha;
// double alpha = (double)( ( proj2 - proj0 ) * cubeProj[edgeInd][edgeInd + 1] ) / (double)( proj1 - proj0 ) ;
double alpha = (double)( (proj2 - proj0) ) / (double)(proj1 - proj0);
if (alpha < 0)
{
if (d == 0)
alpha = 0.5;
}
else if (alpha > 1)
{
alpha = 0.5;
}
else {
alpha = (double)((proj2 - proj0)) / (double)d;
if (alpha < 0 || alpha > 1)
alpha = 0.5;
}
return (float)alpha;
};