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Absolute value for dot product in projected areas

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Thomas Krijnen
2018-11-02 16:37:54 +01:00
parent 66859c7140
commit e463dca0df
1 changed files with 3 additions and 3 deletions
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src/ifcgeom/IfcGeomRepresentation.cpp
+3 -3
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@@ -104,9 +104,9 @@ TopoDS_Compound IfcGeom::Representation::BRep::as_compound() const {
namespace { namespace {
void accumulate(const gp_Ax3& ax, const gp_Dir& normal, double area, double& along_x, double& along_y, double& along_z) { void accumulate(const gp_Ax3& ax, const gp_Dir& normal, double area, double& along_x, double& along_y, double& along_z) {
along_x += area * ax.XDirection().Dot(normal); along_x += area * fabs(ax.XDirection().Dot(normal));
along_y += area * ax.YDirection().Dot(normal); along_y += area * fabs(ax.YDirection().Dot(normal));
along_z += area * ax.Direction().Dot(normal); along_z += area * fabs(ax.Direction().Dot(normal));
} }
void surface_area_along_direction(double tol, const TopoDS_Shape& s, const gp_Ax3& ax, double& along_x, double& along_y, double& along_z) { void surface_area_along_direction(double tol, const TopoDS_Shape& s, const gp_Ax3& ax, double& along_x, double& along_y, double& along_z) {