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0033056: Visualization - add front face culling option

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Added Graphic3d_TypeOfBackfacingModel_FrontCulled enumeration value.
OpenGl_Context::SetFaceCulling() now supports GL_FRONT in addition to GL_BACK.

Added -faceCulling option to vaspects Draw command.
This commit is contained in:
kgv
2022-07-06 23:39:14 +03:00
committed by smoskvin
parent e1d576bf31
commit 9db675b3d6
11 changed files with 183 additions and 42 deletions
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26
src/XmlMXCAFDoc/XmlMXCAFDoc_VisMaterialDriver.cxx
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@@ -256,11 +256,14 @@ Standard_Boolean XmlMXCAFDoc_VisMaterialDriver::Paste (const XmlObjMgt_Persisten
aDoubleSidedStr.GetInteger (aDoubleSidedInt);
Standard_ShortReal anAlphaCutOff = 0.5f;
readReal (theSource, ::AlphaCutOff(), anAlphaCutOff);
aMat->SetFaceCulling (aDoubleSidedInt == 1
? Graphic3d_TypeOfBackfacingModel_DoubleSided
: (aDoubleSidedInt == 2
? Graphic3d_TypeOfBackfacingModel_BackCulled
: Graphic3d_TypeOfBackfacingModel_Auto));
switch (aDoubleSidedInt)
{
case 1: aMat->SetFaceCulling (Graphic3d_TypeOfBackfacingModel_DoubleSided); break;
case 2: aMat->SetFaceCulling (Graphic3d_TypeOfBackfacingModel_BackCulled); break;
case 3: aMat->SetFaceCulling (Graphic3d_TypeOfBackfacingModel_FrontCulled); break;
case 0:
default: aMat->SetFaceCulling (Graphic3d_TypeOfBackfacingModel_Auto); break;
}
aMat->SetAlphaMode (alphaModeFromString (theSource.Element().getAttribute (::AlphaMode()).GetString()), anAlphaCutOff);
Quantity_ColorRGBA aBaseColor;
@@ -307,11 +310,14 @@ void XmlMXCAFDoc_VisMaterialDriver::Paste (const Handle(TDF_Attribute)& theSourc
XmlObjMgt_SRelocationTable& ) const
{
Handle(XCAFDoc_VisMaterial) aMat = Handle(XCAFDoc_VisMaterial)::DownCast(theSource);
Standard_Integer aDoubleSidedInt = aMat->FaceCulling() == Graphic3d_TypeOfBackfacingModel_DoubleSided
? 1
: (aMat->FaceCulling() == Graphic3d_TypeOfBackfacingModel_BackCulled
? 2
: 0);
Standard_Integer aDoubleSidedInt = 0;
switch (aMat->FaceCulling())
{
case Graphic3d_TypeOfBackfacingModel_DoubleSided: aDoubleSidedInt = 1; break;
case Graphic3d_TypeOfBackfacingModel_BackCulled: aDoubleSidedInt = 2; break;
case Graphic3d_TypeOfBackfacingModel_FrontCulled: aDoubleSidedInt = 3; break;
case Graphic3d_TypeOfBackfacingModel_Auto: aDoubleSidedInt = 0; break;
}
theTarget.Element().setAttribute (::IsDoubleSided(), aDoubleSidedInt);
theTarget.Element().setAttribute (::AlphaMode(), alphaModeToString (aMat->AlphaMode()));
writeReal (theTarget, ::AlphaCutOff(), aMat->AlphaCutOff());