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0029975: Visualization - Graphic3d_ClipPlane::ProbeBox() returns Out for fully In box

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This commit is contained in:
kgv 2018-07-20 10:40:14 +03:00 committed by bugmaster
parent 321659b075
commit 6f26baa0fc
2 changed files with 18 additions and 32 deletions
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50
src/Graphic3d/Graphic3d_ClipPlane.hxx
View File

@ -255,58 +255,40 @@ public:
//! Check if the given point is outside / inside / on section. //! Check if the given point is outside / inside / on section.
Graphic3d_ClipState ProbePoint (const Graphic3d_Vec4d& thePoint) const Graphic3d_ClipState ProbePoint (const Graphic3d_Vec4d& thePoint) const
{ {
Graphic3d_ClipState aState = Graphic3d_ClipState_Out;
for (const Graphic3d_ClipPlane* aPlaneIter = this; aPlaneIter != NULL; aPlaneIter = aPlaneIter->myNextInChain.get()) for (const Graphic3d_ClipPlane* aPlaneIter = this; aPlaneIter != NULL; aPlaneIter = aPlaneIter->myNextInChain.get())
{ {
Graphic3d_ClipState aPlnState = aPlaneIter->ProbePointHalfspace (thePoint); Graphic3d_ClipState aPlnState = aPlaneIter->ProbePointHalfspace (thePoint);
if (aPlnState == Graphic3d_ClipState_On) if (aPlnState == Graphic3d_ClipState_In)
{ {
return Graphic3d_ClipState_On;
}
else if (aPlnState == Graphic3d_ClipState_Out
&& aPlaneIter->myNextInChain.IsNull())
{
return Graphic3d_ClipState_Out;
}
}
return Graphic3d_ClipState_In; return Graphic3d_ClipState_In;
} }
else if (aPlnState != Graphic3d_ClipState_Out)
{
aState = Graphic3d_ClipState_On;
}
}
return aState;
}
//! Check if the given bounding box is fully outside / fully inside. //! Check if the given bounding box is fully outside / fully inside.
Graphic3d_ClipState ProbeBox (const Graphic3d_BndBox3d& theBox) const Graphic3d_ClipState ProbeBox (const Graphic3d_BndBox3d& theBox) const
{ {
Graphic3d_ClipState aPrevState = Graphic3d_ClipState_On; Graphic3d_ClipState aState = Graphic3d_ClipState_Out;
for (const Graphic3d_ClipPlane* aPlaneIter = this; aPlaneIter != NULL; aPlaneIter = aPlaneIter->myNextInChain.get()) for (const Graphic3d_ClipPlane* aPlaneIter = this; aPlaneIter != NULL; aPlaneIter = aPlaneIter->myNextInChain.get())
{ {
if (aPlaneIter->IsBoxFullOutHalfspace (theBox)) if (aPlaneIter->IsBoxFullInHalfspace (theBox))
{
if (aPlaneIter->myNextInChain.IsNull())
{
return Graphic3d_ClipState_Out;
}
else if (aPrevState == Graphic3d_ClipState_In)
{
return Graphic3d_ClipState_On;
}
aPrevState = Graphic3d_ClipState_Out;
}
else if (aPlaneIter->IsBoxFullInHalfspace (theBox))
{
if (aPlaneIter->myNextInChain.IsNull())
{ {
// within union operation, if box is entirely inside at least one half-space, others can be ignored
return Graphic3d_ClipState_In; return Graphic3d_ClipState_In;
} }
else if (aPrevState == Graphic3d_ClipState_Out) else if (!aPlaneIter->IsBoxFullOutHalfspace (theBox))
{ {
return Graphic3d_ClipState_On; // if at least one full out test fail, clipping state is inconclusive (partially clipped)
} aState = Graphic3d_ClipState_On;
aPrevState = Graphic3d_ClipState_In;
}
else
{
return Graphic3d_ClipState_On;
} }
} }
return Graphic3d_ClipState_On; return aState;
} }
public: public:

4
tests/v3d/glsl/clipping1
View File

@ -19,6 +19,7 @@ box b2 20 40 0 20 10 70
box b3 0 40 0 20 10 70 box b3 0 40 0 20 10 70
box b4 0 10 0 10 30 70 box b4 0 10 0 10 30 70
box b5 0 0 0 30 10 70 box b5 0 0 0 30 10 70
box bb 10 -10 0 20 10 10
set aNbParts 6 set aNbParts 6
set aColors { RED YELLOW GREEN GRAY MAGENTA1 ORANGE } set aColors { RED YELLOW GREEN GRAY MAGENTA1 ORANGE }
@ -32,6 +33,8 @@ vinit name=View1 w=512 h=512
vviewparams -scale 4.66737 -proj 0.465292 -0.577133 0.671134 -up -0.46873 0.482524 0.739907 -at 15.807 37.1157 21.9799 vviewparams -scale 4.66737 -proj 0.465292 -0.577133 0.671134 -up -0.46873 0.482524 0.739907 -at 15.807 37.1157 21.9799
vpoint p0 0 0 0 vpoint p0 0 0 0
vdisplay -dispMode 1 bb
vaspects -noupdate bb -setColor CYAN1
vzbufftrihedron vzbufftrihedron
puts "Display the geometry as dedicated objects" puts "Display the geometry as dedicated objects"
@ -74,6 +77,7 @@ vfit
vdisplay pp1 pp2 vdisplay pp1 pp2
vclipplane pln -set {*}$aCapParams -equation1 0 0 -1 40 -equation2 0 1 0 -15 vclipplane pln -set {*}$aCapParams -equation1 0 0 -1 40 -equation2 0 1 0 -15
if { [vreadpixel 200 360 rgb name] != "DARKTURQUOISE" } { puts "Error: bb should NOT be clipped" }
vdump $::imagedir/${::casename}_2.png vdump $::imagedir/${::casename}_2.png
vclipplane pln -set {*}$aCapParams -equation1 0 0 -1 40 -equation2 0 1 0 -15 -equation3 -1 0 0 5 vclipplane pln -set {*}$aCapParams -equation1 0 0 -1 40 -equation2 0 1 0 -15 -equation3 -1 0 0 5