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Posted to user@commons.apache.org by Sven Rathgeber <sv...@web.de> on 2019/01/22 09:05:02 UTC
[math] PolyhedronsSets - intersecting a cube diagonally
Hi,
I'm working with PolyhedronsSets. To get a basic understanding
I set up a cube and tried to intersect it diagonally. (apache.commons.math 3.6.1)
When debugging the following test, it looks to me, that Vector(0,0,0) is
ignored, since it is on the border.
Hmm, any ideas.
Regards. Sven
class PolyhedronsSetTest
{
public static final double DEFAULT_TOLERANCE = 1.0e-10;
private PolyhedronsSet cube;
@BeforeEach
void setup()
{
Vector3D[] verts = new Vector3D[8];
// setting up a cube. length edge 1
verts[0] = new Vector3D( 1, 0, 0 );
verts[1] = new Vector3D( 1, 1, 0 );
verts[2] = new Vector3D( 1, 1, 1 );
verts[3] = new Vector3D( 1, 0, 1 );
verts[4] = new Vector3D( 0, 0, 0 );
verts[5] = new Vector3D( 0, 1, 0 );
verts[6] = new Vector3D( 0, 1, 1 );
verts[7] = new Vector3D( 0, 0, 1 );
int[][] faces = new int[6][];
faces[0] = new int[] { 0, 4, 5, 1 }; // bottom
faces[1] = new int[] { 3, 2, 6, 7 }; // top
faces[2] = new int[] { 1, 5, 6, 2 }; // right
faces[3] = new int[] { 5, 4, 7, 6 }; // back
faces[4] = new int[] { 0, 3, 7, 4 }; // left
faces[5] = new int[] { 0, 1, 2, 3 }; // front
cube = new PolyhedronsSet( Arrays.asList( verts ), Arrays.asList( faces ), DEFAULT_TOLERANCE );
}
@Test
void intersectCubeDiagonally()
{
Vector3D start = new Vector3D( -1, -1, -1 );
Vector3D end = new Vector3D( 1, 1, 1 );
Line line = new Line( start, end, DEFAULT_TOLERANCE );
Vector3D origin = new Vector3D( 0.0, 0.0, 0.0 );
SubHyperplane< Euclidean3D > r = cube.firstIntersection( start, line );
assertTrue( r != null );
Plane plane = (Plane) r.getHyperplane();
Vector3D firstIntersection = plane.intersection( line );
assertVectorEquals( origin, firstIntersection );
}
public void assertVectorEquals(
Vector3D lhs,
Vector3D rhs )
{
assertEquals( lhs.getX(), rhs.getX(), DEFAULT_TOLERANCE );
assertEquals( lhs.getY(), rhs.getY(), DEFAULT_TOLERANCE );
assertEquals( lhs.getZ(), rhs.getZ(), DEFAULT_TOLERANCE );
}
}
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Re: [math] PolyhedronsSets - intersecting a cube diagonally
Posted by Sven Rathgeber <sv...@web.de>.
> Please have a look at the fix (in "master" now).
> Thanks a lot for the report,
> Gilles
Hi Gilles and Matt,
the fix works !!! Thanks a lot.
Cheers.
Sven
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Re: [math] PolyhedronsSets - intersecting a cube diagonally
Posted by Gilles Sadowski <gi...@gmail.com>.
Hi Sven.
Le jeu. 24 janv. 2019 à 09:21, Sven Rathgeber <sv...@web.de> a écrit :
>
> > Matt Juntunen leads the development of "Commons Geometry".
> > Hopefully, he'll have a look at your example.
Please have a look at the fix (in "master" now).
Thanks a lot for the report,
Gilles
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Re: [math] PolyhedronsSets - intersecting a cube diagonally
Posted by Sven Rathgeber <sv...@web.de>.
> Matt Juntunen leads the development of "Commons Geometry".
> Hopefully, he'll have a look at your example.
> Best would be to file a report on the bug-tracking system[1] and
> attach a patch (or a git pull request) to it.
> Thanks,
> Gilles
> [1] https://issues.apache.org/jira/projects/GEOMETRY
Done.
Issue: https://issues.apache.org/jira/browse/GEOMETRY-38
Pull request: https://github.com/apache/commons-geometry/pull/19
Cheers,
Sven
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Re: Re: [math] PolyhedronsSets - intersecting a cube diagonally
Posted by Gilles Sadowski <gi...@gmail.com>.
Hi.
Le mer. 23 janv. 2019 à 13:16, Sven Rathgeber <sv...@web.de> a écrit :
>
> > Codes in package "o.a.c.m.geometry" of Commons Math are being superseded
> > by a new component.[1]
> > It is currently in development and we hope to release a beta version soon; you
> > are most welcome to help with testing.[2]
>
> > Please try the new project's code, and let us know how it goes.
>
> Thanks for the quick reply.
>
> I checked out the new geometry repo and added my test to
>
> org/apache/commons/geometry/euclidean/threed/PolyhedronsSetTest.java
>
> -> same result. The SubHyperplane is null.
>
> hmm, I'm not sure, if I use the library correctly or if this is a corner case ?
Matt Juntunen leads the development of "Commons Geometry".
Hopefully, he'll have a look at your example.
Best would be to file a report on the bug-tracking system[1] and
attach a patch (or a git pull request) to it.
Thanks,
Gilles
[1] https://issues.apache.org/jira/projects/GEOMETRY
>
> Regards. Sven
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Aw: Re: [math] PolyhedronsSets - intersecting a cube diagonally
Posted by Sven Rathgeber <sv...@web.de>.
> Codes in package "o.a.c.m.geometry" of Commons Math are being superseded
> by a new component.[1]
> It is currently in development and we hope to release a beta version soon; you
> are most welcome to help with testing.[2]
> Please try the new project's code, and let us know how it goes.
Thanks for the quick reply.
I checked out the new geometry repo and added my test to
org/apache/commons/geometry/euclidean/threed/PolyhedronsSetTest.java
-> same result. The SubHyperplane is null.
hmm, I'm not sure, if I use the library correctly or if this is a corner case ?
Regards. Sven
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Re: [math] PolyhedronsSets - intersecting a cube diagonally
Posted by Gilles Sadowski <gi...@gmail.com>.
Hello.
Le mar. 22 janv. 2019 à 11:06, Sven Rathgeber <sv...@web.de> a écrit :
>
> Hi,
>
> I'm working with PolyhedronsSets. To get a basic understanding
> I set up a cube and tried to intersect it diagonally. (apache.commons.math 3.6.1)
Codes in package "o.a.c.m.geometry" of Commons Math are being superseded
by a new component.[1]
It is currently in development and we hope to release a beta version soon; you
are most welcome to help with testing.[2]
> When debugging the following test, it looks to me, that Vector(0,0,0) is
> ignored, since it is on the border.
>
> Hmm, any ideas.
Please try the new project's code, and let us know how it goes.
Best regards,
Gilles
[1] https://commons.apache.org/geometry
[2] Source repository is here:
https://gitbox.apache.org/repos/asf?p=commons-geometry.git
> [...]
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