Tue, 06/20/2000 - 09:50
Forums:
Hye, I want to find in a solid the axis of symmetry if it (they) exist. The Cascade function GProp_PrincipalProps:: HasSymmetryAxis() allow to know if an axis of symmetry exist but not determine the axis of symmetry. I don't remember properties of inertial matrice which allow to answer this question. Can you help me.
I try the cascade function GProp_PrincipalProps:: HasSymmetryPoint() in case of spherical solid and the answer is no? has this function a problem (I use the Cascade version 2.1).
Thanks
Wed, 06/21/2000 - 08:11
Hello, Karine
to get axes of symmetry there are methods FirstAxisOfInertia(), SecondAxisOfInertia(0 ... of class GProp_PrincipalProps. But to use them you need do something like that:
//Define GProp_GProps
GProp_Gprops G;
//calculate appropriate properties, e. g volume properties for solid
BRepGProp::VolumeProperties(Solid, G);
//define associated GProp_PrincipalProps
GProp_PrincipalProps Pr = G.PrincipalProperties();
if(!Pr.HasSymmetryPoint() ) {
gp_Vec FirstAxis = Pr.FirstAxisOfInertia(); ....
Best regards, Igor