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Resolves IfcSegmentCurve parent curve parameterization for line and clothoid

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This commit is contained in:
Richard Brice
2024-05-04 18:07:09 -07:00
parent 6cb511b681
commit 648ca4d477
1 changed files with 6 additions and 6 deletions
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src/ifcgeom/mapping/IfcCurveSegment.cpp
+6 -6
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@@ -47,12 +47,12 @@ static const double PI = boost::math::constants::pi<double>();
double translate_to_length_measure(const IfcSchema::IfcCurve* crv, double param_value) {
if (std::abs(param_value) < 1.e-7) {
return param_value;
} else if (crv->as<IfcSchema::IfcLine>()) {
// @todo we should actually check magnitude of the vector
return param_value;
} else if (crv->as<IfcSchema::IfcClothoid>()) {
// @todo this is wrong.
return param_value;
} else if (auto line = crv->as<IfcSchema::IfcLine>()) {
return line->Dir()->Magnitude() * param_value;
} else if (auto clothoid = crv->as<IfcSchema::IfcClothoid>()) {
// param_value = 1.0, corresponds to tangent direction = PI/2
// param_value = (arc length)/fabs(A*PI)
return fabs(clothoid->ClothoidConstant()*sqrt(PI))*param_value;
} else if (auto circ = crv->as<IfcSchema::IfcCircle>()) {
return circ->Radius() * param_value;
} else {