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0033521: Visualization - possibility to redefine rotation persistence in Graphic3d_TransformPers

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Added virtual function to Graphic3d_TransformPers that allows overriding rotation persistence behavior on application level.
This commit is contained in:
rodrlyra 2023-11-03 15:25:49 +00:00
parent 588ee924e4
commit 6dbfade692
1 changed files with 29 additions and 10 deletions
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39
src/Graphic3d/Graphic3d_TransformPers.hxx
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@ -241,6 +241,24 @@ public:
return Abs(aViewDim.Y()) / Standard_Real(aVPSizeY);
}
//! Create orientation matrix based on camera and view dimensions.
//! Default implementation locks rotation by nullifying rotation component.
//! Camera and view dimensions are not used, by default.
//! @param theCamera [in] camera definition
//! @param theViewportWidth [in] the width of viewport
//! @param theViewportHeight [in] the height of viewport
virtual NCollection_Mat3<Standard_Real> persistentRotationMatrix (const Handle(Graphic3d_Camera)& theCamera,
const Standard_Integer theViewportWidth,
const Standard_Integer theViewportHeight) const
{
(void )theCamera;
(void )theViewportWidth;
(void )theViewportHeight;
NCollection_Mat3<Standard_Real> aRotMat;
return aRotMat;
}
//! Apply transformation to bounding box of presentation.
//! @param theCamera [in] camera definition
//! @param theProjection [in] the projection transformation matrix.
@ -467,18 +485,19 @@ void Graphic3d_TransformPers::Apply (const Handle(Graphic3d_Camera)& theCamera,
if ((myMode & Graphic3d_TMF_RotatePers) != 0)
{
// lock rotation by nullifying rotation component
aWorldView.SetValue (0, 0, 1.0);
aWorldView.SetValue (1, 0, 0.0);
aWorldView.SetValue (2, 0, 0.0);
NCollection_Mat3<Standard_Real> aRotMat = persistentRotationMatrix (theCamera, theViewportWidth, theViewportHeight);
aWorldView.SetValue (0, 1, 0.0);
aWorldView.SetValue (1, 1, 1.0);
aWorldView.SetValue (2, 1, 0.0);
aWorldView.SetValue (0, 0, aRotMat.GetColumn (0).x());
aWorldView.SetValue (1, 0, aRotMat.GetColumn (0).y());
aWorldView.SetValue (2, 0, aRotMat.GetColumn (0).z());
aWorldView.SetValue (0, 2, 0.0);
aWorldView.SetValue (1, 2, 0.0);
aWorldView.SetValue (2, 2, 1.0);
aWorldView.SetValue (0, 1, aRotMat.GetColumn (1).x());
aWorldView.SetValue (1, 1, aRotMat.GetColumn (1).y());
aWorldView.SetValue (2, 1, aRotMat.GetColumn (1).z());
aWorldView.SetValue (0, 2, aRotMat.GetColumn (2).x());
aWorldView.SetValue (1, 2, aRotMat.GetColumn (2).y());
aWorldView.SetValue (2, 2, aRotMat.GetColumn (2).z());
}
if ((myMode & Graphic3d_TMF_ZoomPers) != 0)