maspack.geometry

Class TriFaceClipperTest

java.lang.Object

maspack.util.UnitTest

maspack.geometry.TriFaceClipperTest

public class TriFaceClipperTest
extends UnitTest

Test class for TriFaceClipper.

Clipping results are checked against an independent reference implementation (RefRegion), which finds the parameter interval of a segment lying within the region by intersecting [0,1] with the four half spaces that bound the region. The reference implementation is itself anchored by a sampling test which classifies points along the segment directly, and by explicit tests on a canonical triangle for which the region is known by inspection.

Constructor Summary

Constructors

Constructor and Description
TriFaceClipperTest()

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] args)
void	test()
void	testAdjacency() Tests the coordinate reuse optimization of maxClippedDistance(Face,int,boolean).
void	testAreaClipping() Tests the triangle based maxClippedDistance() on triangles which are large enough to span the region without any of their edges entering it.
void	testErrors() Tests error handling.
void	testFaceMethods() Tests the methods which take Face and HalfEdge arguments, including the use of world coordinates.
void	testRandom() Tests clipping for randomly generated triangles and segments.
void	testRegionPredicate() Tests the region predicate used by the reference implementation against points whose location is known by inspection, and checks that the clipper agrees about whether or not a point lies inside the region.
void	testSpecificCases() Tests clipping for cases whose results are known by inspection.

Methods inherited from class maspack.util.UnitTest

check, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkNormedEquals, checkNormedEquals, getSilent, printUsageAndExit, runtest, setSilent

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TriFaceClipperTest

public TriFaceClipperTest()

Method Detail

testRegionPredicate

public void testRegionPredicate()

Tests the region predicate used by the reference implementation against points whose location is known by inspection, and checks that the clipper agrees about whether or not a point lies inside the region.

testSpecificCases

public void testSpecificCases()

Tests clipping for cases whose results are known by inspection.

testRandom

public void testRandom()

Tests clipping for randomly generated triangles and segments.

testErrors

public void testErrors()

Tests error handling.

testFaceMethods

public void testFaceMethods()

Tests the methods which take Face and HalfEdge arguments, including the use of world coordinates.

testAdjacency

public void testAdjacency()

Tests the coordinate reuse optimization of maxClippedDistance(Face,int,boolean).

testAreaClipping

public void testAreaClipping()

Tests the triangle based maxClippedDistance() on triangles which are large enough to span the region without any of their edges entering it. These are the cases which an edge based estimate misses, and so they are checked explicitly here in addition to being covered by the random tests.

test

public void test()

Overrides:

test in class UnitTest

main

public static void main(java.lang.String[] args)