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Qhull_test.cpp
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Qhull_test.cpp
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/****************************************************************************
**
** Copyright (c) 2008-2015 C.B. Barber. All rights reserved.
** $Id: //main/2015/qhull/src/qhulltest/Qhull_test.cpp#2 $$Change: 2013 $
** $DateTime: 2015/10/20 23:04:17 $$Author: bbarber $
**
****************************************************************************/
//pre-compiled headers
#include <iostream>
#include "qhulltest/RoadTest.h" // QT_VERSION
#include "libqhullcpp/Qhull.h"
#include "libqhullcpp/QhullError.h"
#include "libqhullcpp/RboxPoints.h"
#include "libqhullcpp/QhullFacetList.h"
using std::cout;
using std::endl;
using std::string;
namespace orgQhull {
//! Test C++ interface to Qhull
//! See eg/q_test for tests of Qhull commands
class Qhull_test : public RoadTest
{
Q_OBJECT
#//!\name Test slots
private slots:
void cleanup();
void t_construct();
void t_attribute();
void t_message();
void t_getSet();
void t_getQh();
void t_getValue();
void t_foreach();
void t_modify();
};//Qhull_test
void
add_Qhull_test()
{
new Qhull_test();
}
//Executed after each testcase
void Qhull_test::
cleanup()
{
RoadTest::cleanup();
}
void Qhull_test::
t_construct()
{
{
Qhull q;
QCOMPARE(q.dimension(),0);
QVERIFY(q.qh()!=0);
QCOMPARE(QString(q.qhullCommand()),QString(""));
QCOMPARE(QString(q.rboxCommand()),QString(""));
try{
QCOMPARE(q.area(),0.0);
QFAIL("area() did not fail.");
}catch (const std::exception &e) {
cout << "INFO : Caught " << e.what();
}
q.checkAndFreeQhullMemory();
}
{
RboxPoints rbox("10000");
Qhull q(rbox, "QR0"); // Random points in a randomly rotated cube.
QCOMPARE(q.dimension(),3);
QVERIFY(q.volume() < 1.0);
QVERIFY(q.volume() > 0.99);
q.checkAndFreeQhullMemory();
}
{
double points[] = {
0, 0,
1, 0,
1, 1
};
Qhull q("triangle", 2, 3, points, "");
QCOMPARE(q.dimension(),2);
QCOMPARE(q.facetCount(),3);
QCOMPARE(q.vertexCount(),3);
QCOMPARE(q.dimension(),2);
QCOMPARE(q.area(), 2.0+sqrt(2.0)); // length of boundary
QCOMPARE(q.volume(), 0.5); // the 2-d area
q.checkAndFreeQhullMemory();
}
}//t_construct
void Qhull_test::
t_attribute()
{
RboxPoints rcube("c");
{
double normals[] = {
0, -1, -0.5,
-1, 0, -0.5,
1, 0, -0.5,
0, 1, -0.5
};
Qhull q;
Coordinates feasible;
feasible << 0.0 << 0.0;
q.setFeasiblePoint(feasible);
Coordinates c(std::vector<double>(2, 0.0));
QVERIFY(q.feasiblePoint()==c);
q.setOutputStream(&cout);
q.runQhull("normals of square", 3, 4, normals, "H"); // halfspace intersect
QVERIFY(q.feasiblePoint()==c); // from qh.feasible_point after runQhull()
QCOMPARE(q.facetList().count(), 4); // Vertices of square
cout << "Expecting summary of halfspace intersection\n";
q.outputQhull();
q.qh()->disableOutputStream(); // Same as q.disableOutputStream()
cout << "Expecting no output from qh_fprintf() in Qhull.cpp\n";
q.outputQhull();
q.checkAndFreeQhullMemory();
}
}//t_attribute
//! No QhullMessage for errors outside of qhull
void Qhull_test::
t_message()
{
RboxPoints rcube("c");
{
Qhull q;
QCOMPARE(q.qhullMessage(), string(""));
QCOMPARE(q.qhullStatus(), qh_ERRnone);
QVERIFY(!q.hasQhullMessage());
try{
q.runQhull(rcube, "Fd");
QFAIL("runQhull Fd did not fail.");
}catch (const std::exception &e) {
const char *s= e.what();
cout << "INFO : Caught " << s;
QCOMPARE(QString::fromStdString(s).left(6), QString("QH6029"));
// FIXUP QH11025 -- review decision to clearQhullMessage at QhullError() // Cleared when copied to QhullError
QVERIFY(!q.hasQhullMessage());
// QCOMPARE(q.qhullMessage(), QString::fromStdString(s).remove(0, 7));
// QCOMPARE(q.qhullStatus(), 6029);
q.clearQhullMessage();
QVERIFY(!q.hasQhullMessage());
}
q.appendQhullMessage("Append 1");
QVERIFY(q.hasQhullMessage());
QCOMPARE(QString::fromStdString(q.qhullMessage()), QString("Append 1"));
q.appendQhullMessage("\nAppend 2\n");
QCOMPARE(QString::fromStdString(q.qhullMessage()), QString("Append 1\nAppend 2\n"));
q.clearQhullMessage();
QVERIFY(!q.hasQhullMessage());
QCOMPARE(QString::fromStdString(q.qhullMessage()), QString(""));
q.checkAndFreeQhullMemory();
}
{
cout << "INFO : Error stream without output stream\n";
Qhull q;
q.setErrorStream(&cout);
q.setOutputStream(0);
try{
q.runQhull(rcube, "Fd");
QFAIL("runQhull Fd did not fail.");
}catch (const QhullError &e) {
cout << "INFO : Caught " << e;
QCOMPARE(e.errorCode(), 6029);
}
//FIXUP QH11025 Qhullmessage cleared when QhullError thrown. Switched to e
//QVERIFY(q.hasQhullMessage());
//QCOMPARE(QString::fromStdString(q.qhullMessage()).left(6), QString("QH6029"));
q.clearQhullMessage();
QVERIFY(!q.hasQhullMessage());
q.checkAndFreeQhullMemory();
}
{
cout << "INFO : Error output sent to output stream without error stream\n";
Qhull q;
q.setErrorStream(0);
q.setOutputStream(&cout);
try{
q.runQhull(rcube, "Tz H0");
QFAIL("runQhull TZ did not fail.");
}catch (const std::exception &e) {
const char *s= e.what();
cout << "INFO : Caught " << s;
QCOMPARE(QString::fromLatin1(s).left(6), QString("QH6023"));
}
//FIXUP QH11025 Qhullmessage cleared when QhullError thrown. Switched to e
//QVERIFY(q.hasQhullMessage());
//QCOMPARE(QString::fromStdString(q.qhullMessage()).left(17), QString("qhull: no message"));
//QCOMPARE(q.qhullStatus(), 6023);
q.clearQhullMessage();
QVERIFY(!q.hasQhullMessage());
q.checkAndFreeQhullMemory();
}
{
cout << "INFO : No error stream or output stream\n";
Qhull q;
q.setErrorStream(0);
q.setOutputStream(0);
try{
q.runQhull(rcube, "Fd");
QFAIL("outputQhull did not fail.");
}catch (const std::exception &e) {
const char *s= e.what();
cout << "INFO : Caught " << s;
QCOMPARE(QString::fromLatin1(s).left(6), QString("QH6029"));
}
//FIXUP QH11025 Qhullmessage cleared when QhullError thrown. Switched to e
//QVERIFY(q.hasQhullMessage());
//QCOMPARE(QString::fromStdString(q.qhullMessage()).left(9), QString("qhull err"));
//QCOMPARE(q.qhullStatus(), 6029);
q.clearQhullMessage();
QVERIFY(!q.hasQhullMessage());
q.checkAndFreeQhullMemory();
}
}//t_message
void Qhull_test::
t_getSet()
{
RboxPoints rcube("c");
{
Qhull q;
QVERIFY(!q.initialized());
q.runQhull(rcube, "s");
QVERIFY(q.initialized());
QCOMPARE(q.dimension(), 3);
QhullPoint p= q.origin();
QCOMPARE(p.dimension(), 3);
QCOMPARE(p[0]+p[1]+p[2], 0.0);
q.setErrorStream(&cout);
q.outputQhull();
q.checkAndFreeQhullMemory();
}
{
Qhull q;
q.runQhull(rcube, "");
q.setOutputStream(&cout);
q.outputQhull();
q.checkAndFreeQhullMemory();
}
}//t_getSet
void Qhull_test::
t_getQh()
{
RboxPoints rcube("c");
{
Qhull q;
q.runQhull(rcube, "s");
QCOMPARE(QString(q.qhullCommand()), QString("qhull s"));
QCOMPARE(QString(q.rboxCommand()), QString("rbox \"c\""));
QCOMPARE(q.facetCount(), 6);
QCOMPARE(q.vertexCount(), 8);
// Sample fields from Qhull's qhT [libqhull.h]
QCOMPARE(q.qh()->ALLpoints, 0u);
QCOMPARE(q.qh()->GOODpoint, 0);
QCOMPARE(q.qh()->IStracing, 0);
QCOMPARE(q.qh()->MAXcoplanar+1.0, 1.0); // fuzzy compare
QCOMPARE(q.qh()->MERGING, 1u);
QCOMPARE(q.qh()->input_dim, 3);
QCOMPARE(QString(q.qh()->qhull_options).left(8), QString(" run-id"));
QCOMPARE(q.qh()->num_facets, 6);
QCOMPARE(q.qh()->hasTriangulation, 0u);
QCOMPARE(q.qh()->max_outside - q.qh()->min_vertex + 1.0, 1.0); // fuzzy compare
QCOMPARE(*q.qh()->gm_matrix+1.0, 1.0); // fuzzy compare
q.checkAndFreeQhullMemory();
}
}//t_getQh
void Qhull_test::
t_getValue()
{
RboxPoints rcube("c");
{
Qhull q;
q.runQhull(rcube, "");
QCOMPARE(q.area(), 6.0);
QCOMPARE(q.volume(), 1.0);
q.checkAndFreeQhullMemory();
}
}//t_getValue
void Qhull_test::
t_foreach()
{
RboxPoints rcube("c");
{
Qhull q;
QCOMPARE(q.beginFacet(),q.endFacet());
QCOMPARE(q.beginVertex(),q.endVertex());
q.runQhull(rcube, "");
QCOMPARE(q.facetList().count(), 6);
// defineVertexNeighborFacets() tested in QhullVertex_test::t_io()
QhullFacetList facets(q.beginFacet(), q.endFacet());
QCOMPARE(facets.count(), 6);
QCOMPARE(q.firstFacet(), q.beginFacet());
QhullVertexList vertices(q.beginVertex(), q.endVertex());
QCOMPARE(vertices.count(), 8);
QCOMPARE(q.firstVertex(), q.beginVertex());
QhullPoints ps= q.points();
QCOMPARE(ps.count(), 8);
QhullPointSet ps2= q.otherPoints();
QCOMPARE(ps2.count(), 0);
// ps2= q.otherPoints(); //disabled, would not copy the points
QCOMPARE(q.facetCount(), 6);
QCOMPARE(q.vertexCount(), 8);
coordT *c= q.pointCoordinateBegin(); // of q.points()
QVERIFY(*c==0.5 || *c==-0.5);
coordT *c3= q.pointCoordinateEnd();
QVERIFY(c3[-1]==0.5 || c3[-1]==-0.5);
QCOMPARE(c3-c, 8*3);
QCOMPARE(q.vertexList().count(), 8);
q.checkAndFreeQhullMemory();
}
}//t_foreach
void Qhull_test::
t_modify()
{
//addPoint() tested in t_foreach
RboxPoints diamond("d");
Qhull q(diamond, "o");
q.setOutputStream(&cout);
cout << "Expecting vertexList and facetList of a 3-d diamond.\n";
q.outputQhull();
cout << "Expecting normals of a 3-d diamond.\n";
q.outputQhull("n");
// runQhull tested in t_attribute(), t_message(), etc.
q.checkAndFreeQhullMemory();
}//t_modify
}//orgQhull
// Redefine Qhull's usermem_r.c in order to report erroneous calls to qh_exit
void qh_exit(int exitcode) {
cout << "FAIL! : Qhull called qh_exit(). Qhull's error handling not available.\n.. See the corresponding Qhull:qhull_message or setErrorStream().\n";
exit(exitcode);
}
void qh_fprintf_stderr(int msgcode, const char *fmt, ... ) {
va_list args;
va_start(args, fmt);
if(msgcode)
fprintf(stderr, "QH%.4d ", msgcode);
vfprintf(stderr, fmt, args);
va_end(args);
} /* fprintf_stderr */
void qh_free(void *mem) {
free(mem);
}
void *qh_malloc(size_t size) {
return malloc(size);
}
#if 0
template<> char * QTest::
toString(const std::string &s)
{
QByteArray ba = s.c_str();
return qstrdup(ba.data());
}
#endif
#include "moc/Qhull_test.moc"

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