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0030695: Visualization - selection by box should use clipping planes set for viewer - moving check on touching the clipping plane in selection only.

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This commit is contained in:
nds
2019-08-07 09:42:33 +03:00
committed by bugmaster
parent 87bda9d805
commit 8996b4490a
4 changed files with 150 additions and 9 deletions
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32
src/Graphic3d/Graphic3d_ClipPlane.hxx
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@@ -291,6 +291,28 @@ public:
return aState;
}
//! Check if the given bounding box is In and touch the clipping planes
Standard_Boolean ProbeBoxTouch (const Graphic3d_BndBox3d& theBox) const
{
for (const Graphic3d_ClipPlane* aPlaneIter = this; aPlaneIter != NULL; aPlaneIter = aPlaneIter->myNextInChain.get())
{
if (aPlaneIter->IsBoxFullInHalfspace (theBox))
{
// within union operation, if box is entirely inside at least one half-space, others can be ignored
return Standard_False;
}
else if (!aPlaneIter->IsBoxFullOutHalfspace (theBox))
{
// the box is not fully out, and not fully in, check is it on (but not intersect)
if (ProbeBoxMaxPointHalfspace (theBox) != Graphic3d_ClipState_Out)
{
return Standard_True;
}
}
}
return Standard_False;
}
public:
//! Check if the given point is outside of the half-space (e.g. should be discarded by clipping plane).
@@ -329,6 +351,16 @@ public:
return IsPointOutHalfspace (aMaxPnt);
}
//! Check if the given bounding box is fully outside of the half-space (e.g. should be discarded by clipping plane).
Graphic3d_ClipState ProbeBoxMaxPointHalfspace (const Graphic3d_BndBox3d& theBox) const
{
const Graphic3d_Vec4d aMaxPnt (myEquation.x() > 0.0 ? theBox.CornerMax().x() : theBox.CornerMin().x(),
myEquation.y() > 0.0 ? theBox.CornerMax().y() : theBox.CornerMin().y(),
myEquation.z() > 0.0 ? theBox.CornerMax().z() : theBox.CornerMin().z(),
1.0);
return ProbePointHalfspace (aMaxPnt);
}
//! Check if the given bounding box is fully inside (or touches from inside) the half-space (e.g. NOT discarded by clipping plane).
bool IsBoxFullInHalfspace (const Graphic3d_BndBox3d& theBox) const
{