Chaning material color in global illumination - Forum Open Cascade Technology

Daniel Duesentrieb
Fri, 12/16/2022 - 20:08

Forums:

Visualization and 3D Viewer

doesn't work. It does in raytracing.

what am I doing wrong?

Thank you all!

gkv311 n
Fri, 12/16/2022 - 21:13

And how exactly you change material (code short l snippet)?

Daniel Duesentrieb
Sat, 12/17/2022 - 20:58

of course - sorry, I forgot:

Graphic3d_MaterialAspect material = Graphic3d_NameOfMaterial_Glass;
material.SetColor(Quantity_NOC_RED);
m_aisDisplay->SetMaterial(material);

As stated before it works with Raytrace but not in Global Illumination.

My goal is to make different color glass

gkv311 n
Sat, 12/17/2022 - 22:35

Path-Tracing engine uses special material model Graphic3d_BSDF (see Graphic3d_MaterialAspect::BSDF(), ::SetBSDF). Current implementation of Graphic3d_MaterialAspect::SetColor() doesn't alter BSDF definition as it might be non-trivial to apply. Consider defining BSDF property on your own.

Daniel Duesentrieb
Sat, 12/17/2022 - 23:21

Great - it works! I made the detour over

Graphic3d_PBRMaterial m;
Graphic3d_BSDF glass = Graphic3d_BSDF::CreateGlass(Graphic3d_Vec3(1,0.1,1), Graphic3d_Vec3(1,1,0.5), 0.5,0.5);
m.SetBSDF(glass);
material.SetPBRMaterial(m);
material.SetAmbientColor(color);
material.SetDiffuseColor(Quantity_NOC_RED);

what didn't work.

Do it direct works just fine!

material.SetBSDF(glass);

Thanks!!