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Fix egs_circle_perpendicular critical bug #1072

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Sep 4, 2024
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Original file line number Diff line number Diff line change
Expand Up @@ -149,9 +149,8 @@ class EGS_CIRCLE_PERPENDICULAR_EXPORT EGS_CirclePerpendicularShape : public EGS_
EGS_Float angleBetween = std::acos(u * perpToCircle / (perpToCircle.length() * u.length()));

// We will rotate about a vector perpendicular to u and the target surface normal
// Check against fabs(u.z) to account for both parallel and anti-parallel cases
EGS_Vector rotateAbout;
if ((fabs(u.z) - perpToCircle.z) < epsilon) {
if (fabs(fabs(u.z) - perpToCircle.z) < epsilon) {
rotateAbout = perpToCircle;
}
else {
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