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#include "private/qpathclipper_p.h"
#include "paths.h"
#include "pathcompare.h"
#include <QtTest/QtTest>
#include <qpainterpath.h>
#include <qpolygon.h>
#include <qdebug.h>
#include <qpainter.h>
#include <math.h>
class tst_QPathClipper : public QObject
{
Q_OBJECT
public:
tst_QPathClipper();
virtual ~tst_QPathClipper();
private:
void clipTest(int subjectIndex, int clipIndex, QPathClipper::Operation op);
QList<QPainterPath> paths;
public slots:
void initTestCase();
private slots:
void testWingedEdge();
void testComparePaths();
void clip_data();
void clip();
void clip2();
void clip3();
void testIntersections();
void testIntersections2();
void testIntersections3();
void testIntersections4();
void testIntersections5();
void testIntersections6();
void testIntersections7();
void testIntersections8();
void testIntersections9();
void zeroDerivativeCurves();
void task204301_data();
void task204301();
void task209056();
void task251909();
void qtbug3778();
};
Q_DECLARE_METATYPE(QPainterPath)
Q_DECLARE_METATYPE(QPathClipper::Operation)
tst_QPathClipper::tst_QPathClipper()
{
}
tst_QPathClipper::~tst_QPathClipper()
{
}
void tst_QPathClipper::initTestCase()
{
paths << Paths::rect();
paths << Paths::heart();
paths << Paths::body();
paths << Paths::mailbox();
paths << Paths::deer();
paths << Paths::fire();
paths << Paths::random1();
paths << Paths::random2();
paths << Paths::heart2();
paths << Paths::rect2();
paths << Paths::rect3();
paths << Paths::rect4();
paths << Paths::rect5();
paths << Paths::rect6();
paths << Paths::frame1();
paths << Paths::frame2();
paths << Paths::frame3();
paths << Paths::frame4();
paths << Paths::triangle1();
paths << Paths::triangle2();
paths << Paths::node();
paths << Paths::interRect();
paths << Paths::simpleCurve();
paths << Paths::simpleCurve2();
paths << Paths::simpleCurve3();
paths << Paths::bezier1();
paths << Paths::bezier2();
paths << Paths::bezier3();
paths << Paths::bezier4();
paths << Paths::bezierFlower();
paths << Paths::lips();
paths << Paths::clover();
paths << Paths::ellipses();
paths << Paths::windingFill();
paths << Paths::oddEvenFill();
paths << Paths::squareWithHole();
paths << Paths::circleWithHole();
paths << Paths::bezierQuadrant();
// make sure all the bounding rects are centered at the origin
for (int i = 0; i < paths.size(); ++i) {
QRectF bounds = paths[i].boundingRect();
QMatrix m(1, 0,
0, 1,
-bounds.center().x(), -bounds.center().y());
paths[i] = m.map(paths[i]);
}
}
static QPainterPath samplePath1()
{
QPainterPath path;
path.moveTo(QPointF(200, 246.64789));
path.lineTo(QPointF(200, 206.64789));
path.lineTo(QPointF(231.42858, 206.64789));
path.lineTo(QPointF(231.42858, 246.64789));
path.lineTo(QPointF(200, 246.64789));
return path;
}
static QPainterPath samplePath2()
{
QPainterPath path;
path.moveTo(QPointF(200, 146.64789));
path.lineTo(QPointF(200, 106.64789));
path.lineTo(QPointF(231.42858, 106.64789));
path.lineTo(QPointF(231.42858, 146.64789));
path.lineTo(QPointF(200, 146.64789));
return path;
}
static QPainterPath samplePath3()
{
QPainterPath path;
path.moveTo(QPointF(231.42858, 80.933609));
path.lineTo(QPointF(200, 80.933609));
path.lineTo(QPointF(200, 96.64788999999999));
path.lineTo(QPointF(231.42858, 96.64788999999999));
path.lineTo(QPointF(231.42858, 80.933609));
return path;
}
static QPainterPath samplePath4()
{
QPainterPath path;
path.moveTo(QPointF(288.571434, 80.933609));
path.lineTo(QPointF(431.42858, 80.933609));
path.lineTo(QPointF(431.42858, 96.64788999999999));
path.lineTo(QPointF(288.571434, 96.64788999999999));
path.lineTo(QPointF(288.571434, 80.933609));
return path;
}
static QPainterPath samplePath5()
{
QPainterPath path;
path.moveTo(QPointF(588.571434, 80.933609));
path.lineTo(QPointF(682.85715, 80.933609));
path.lineTo(QPointF(682.85715, 96.64788999999999));
path.lineTo(QPointF(588.571434, 96.64788999999999));
path.lineTo(QPointF(588.571434, 80.933609));
return path;
}
static QPainterPath samplePath6()
{
QPainterPath path;
path.moveTo(QPointF(588.571434, 80.933609));
path.lineTo(QPointF(200, 80.933609));
path.lineTo(QPointF(200, 446.6479));
path.lineTo(QPointF(682.85715, 446.6479));
path.lineTo(QPointF(682.85715, 96.64788999999999));
path.lineTo(QPointF(731.42858, 96.64788999999999));
path.lineTo(QPointF(731.42858, 56.64788999999999));
path.lineTo(QPointF(588.571434, 56.64788999999999));
path.lineTo(QPointF(588.571434, 80.933609));
return path;
}
static QPainterPath samplePath7()
{
QPainterPath path;
path.moveTo(QPointF(682.85715, 206.64789));
path.lineTo(QPointF(682.85715, 246.64789));
path.lineTo(QPointF(588.571434, 246.64789));
path.lineTo(QPointF(588.571434, 206.64789));
path.lineTo(QPointF(682.85715, 206.64789));
return path;
}
static QPainterPath samplePath8()
{
QPainterPath path;
path.moveTo(QPointF(682.85715, 406.64789));
path.lineTo(QPointF(682.85715, 446.64789));
path.lineTo(QPointF(588.571434, 446.64789));
path.lineTo(QPointF(588.571434, 406.64789));
path.lineTo(QPointF(682.85715, 406.64789));
return path;
}
static QPainterPath samplePath9()
{
QPainterPath path;
path.moveTo(QPointF(682.85715, 426.64789));
path.lineTo(QPointF(682.85715, 446.6479));
path.lineTo(QPointF(568.571434, 446.6479));
path.lineTo(QPointF(568.571434, 426.64789));
path.lineTo(QPointF(682.85715, 426.64789));
return path;
}
static QPainterPath samplePath10()
{
QPainterPath path;
path.moveTo(QPointF(511.42858, 446.6479));
path.lineTo(QPointF(368.571434, 446.6479));
path.lineTo(QPointF(368.571434, 426.64789));
path.lineTo(QPointF(511.42858, 426.64789));
path.lineTo(QPointF(511.42858, 446.6479));
return path;
}
static QPainterPath samplePath13()
{
QPainterPath path;
path.moveTo(QPointF(160, 200));
path.lineTo(QPointF(100, 200));
path.lineTo(QPointF(100, 130));
path.lineTo(QPointF(160, 130));
path.lineTo(QPointF(160, 200));
return path;
}
static QPainterPath samplePath14()
{
QPainterPath path;
path.moveTo(160, 80);
path.lineTo(160, 180);
path.lineTo(100, 180);
path.lineTo(100, 80);
path.lineTo(160, 80);
path.moveTo(160, 80);
path.lineTo(160, 100);
path.lineTo(120, 100);
path.lineTo(120, 80);
return path;
}
void tst_QPathClipper::clip_data()
{
//create the testtable instance and define the elements
QTest::addColumn<QPainterPath>("subject");
QTest::addColumn<QPainterPath>("clip");
QTest::addColumn<QPathClipper::Operation>("op");
QTest::addColumn<QPainterPath>("result");
//next we fill it with data
QTest::newRow( "simple1" ) << Paths::frame3()
<< Paths::frame4()
<< QPathClipper::BoolAnd
<< samplePath1();
QTest::newRow( "simple2" ) << Paths::frame3()
<< Paths::frame4() * QTransform().translate(0, -100)
<< QPathClipper::BoolAnd
<< samplePath2();
QTest::newRow( "simple3" ) << Paths::frame3()
<< Paths::frame4() * QTransform().translate(0, -150)
<< QPathClipper::BoolAnd
<< samplePath3();
QTest::newRow( "simple4" ) << Paths::frame3()
<< Paths::frame4() * QTransform().translate(200, -150)
<< QPathClipper::BoolAnd
<< samplePath4();
QTest::newRow( "simple5" ) << Paths::frame3()
<< Paths::frame4() * QTransform().translate(500, -150)
<< QPathClipper::BoolAnd
<< samplePath5();
QTest::newRow( "simple6" ) << Paths::frame3()
<< Paths::frame4() * QTransform().translate(500, -150)
<< QPathClipper::BoolOr
<< samplePath6();
QTest::newRow( "simple7" ) << Paths::frame3()
<< Paths::frame4() * QTransform().translate(500, 0)
<< QPathClipper::BoolAnd
<< samplePath7();
QTest::newRow( "simple8" ) << Paths::frame3()
<< Paths::frame4() * QTransform().translate(500, 200)
<< QPathClipper::BoolAnd
<< samplePath8();
QTest::newRow( "simple9" ) << Paths::frame3()
<< Paths::frame4() * QTransform().translate(480, 220)
<< QPathClipper::BoolAnd
<< samplePath9();
QTest::newRow( "simple10" ) << Paths::frame3()
<< Paths::frame4() * QTransform().translate(280, 220)
<< QPathClipper::BoolAnd
<< samplePath10();
QTest::newRow( "simple_move_to1" ) << Paths::rect4()
<< Paths::rect2() * QTransform().translate(-20, 50)
<< QPathClipper::BoolAnd
<< samplePath13();
QTest::newRow( "simple_move_to2" ) << Paths::rect4()
<< Paths::rect2() * QTransform().translate(-20, 0)
<< QPathClipper::BoolAnd
<< samplePath14();
}
// sanity check to make sure comparePaths declared above works
void tst_QPathClipper::testComparePaths()
{
QPainterPath a;
QPainterPath b;
a.addRect(0, 0, 10, 10);
b.addRect(0, 0, 10.00001, 10.00001);
QVERIFY(!QPathCompare::comparePaths(a, b));
b = QPainterPath();
b.addRect(0, 0, 10.00000000001, 10.00000000001);
QVERIFY(QPathCompare::comparePaths(a, b));
b = QPainterPath();
b.moveTo(10, 0);
b.lineTo(0, 0);
b.lineTo(0, 10);
b.lineTo(10, 10);
QVERIFY(QPathCompare::comparePaths(a, b));
b.lineTo(10, 0);
QVERIFY(QPathCompare::comparePaths(a, b));
b = QPainterPath();
b.moveTo(10, 0);
b.lineTo(0, 10);
b.lineTo(0, 0);
b.lineTo(10, 10);
QVERIFY(!QPathCompare::comparePaths(a, b));
}
void tst_QPathClipper::clip()
{
if (sizeof(double) != sizeof(qreal)) {
QSKIP("This test only works for qreal=double, otherwise ends in rounding errors", SkipAll);
}
QFETCH( QPainterPath, subject );
QFETCH( QPainterPath, clip );
QFETCH( QPathClipper::Operation, op );
QFETCH( QPainterPath, result);
QPathClipper clipper(subject, clip);
QPainterPath x = clipper.clip(op);
QVERIFY(QPathCompare::comparePaths(x, result));
}
static inline QPointF randomPointInRect(const QRectF &rect)
{
qreal rx = qrand() / (RAND_MAX + 1.);
qreal ry = qrand() / (RAND_MAX + 1.);
return QPointF(rect.left() + rx * rect.width(),
rect.top() + ry * rect.height());
}
void tst_QPathClipper::clipTest(int subjectIndex, int clipIndex, QPathClipper::Operation op)
{
const QPainterPath &subject = paths[subjectIndex];
const QPainterPath &clip = paths[clipIndex];
const int count = 40;
QRectF bounds = subject.boundingRect().united(clip.boundingRect());
const qreal adjustX = bounds.width() * 0.01;
const qreal adjustY = bounds.height() * 0.01;
// make sure we test some points that are outside both paths as well
bounds = bounds.adjusted(-adjustX, -adjustY, adjustX, adjustY);
const int dim = 256;
const qreal scale = qMin(dim / bounds.width(), dim / bounds.height());
QPathClipper clipper(subject, clip);
QPainterPath result = clipper.clip(op);
// using the image here is a bit of a hacky way to make sure we don't test points that
// are too close to the path edges to avoid test fails that are due to numerical errors
QImage img(dim, dim, QImage::Format_ARGB32_Premultiplied);
img.fill(0x0);
QPainter p(&img);
p.setRenderHint(QPainter::Antialiasing);
p.scale(scale, scale);
p.translate(-bounds.topLeft());
p.setPen(Qt::black);
p.drawPath(subject);
p.setPen(Qt::red);
p.drawPath(clip);
p.end();
for (int i = 0; i < count; ++i) {
QPointF point;
QRgb pixel;
do {
point = randomPointInRect(bounds);
const QPointF imagePoint = (point - bounds.topLeft()) * scale;
pixel = img.pixel(int(imagePoint.x()), int(imagePoint.y()));
} while (qAlpha(pixel) > 0);
const bool inSubject = subject.contains(point);
const bool inClip = clip.contains(point);
const bool inResult = result.contains(point);
bool expected = false;
switch (op) {
case QPathClipper::BoolAnd:
expected = inSubject && inClip;
break;
case QPathClipper::BoolOr:
expected = inSubject || inClip;
break;
case QPathClipper::BoolSub:
expected = inSubject && !inClip;
break;
default:
break;
}
if (expected != inResult) {
char str[256];
const char *opStr =
op == QPathClipper::BoolAnd ? "and" :
op == QPathClipper::BoolOr ? "or" : "sub";
sprintf(str, "Expected: %d, actual: %d, subject: %d, clip: %d, op: %s\n",
int(expected), int(inResult), subjectIndex, clipIndex, opStr);
// debugging
#if 0
QRect rect = bounds.toAlignedRect();
QPainter p(&img);
p.scale(scale, scale);
p.translate(-bounds.topLeft());
p.setPen(Qt::NoPen);
p.setBrush(QColor(0x700ff00));
p.drawPath(result);
p.setPen(Qt::blue);
p.drawPoint(point);
p.end();
char str2[256];
sprintf(str2, "fail-%d-%d-%s.png", subjectIndex, clipIndex, opStr);
img.save(str2);
#endif
QFAIL(str);
}
}
}
void tst_QPathClipper::clip2()
{
if (sizeof(double) != sizeof(qreal))
QSKIP("This test only works for qreal=double, otherwise ends in rounding errors", SkipAll);
int operation = 0;
for (int i = 0; i < paths.size(); ++i) {
for (int j = 0; j <= i; ++j) {
QPathClipper::Operation op = QPathClipper::Operation((operation++) % 3);
clipTest(i, j, op);
}
}
}
void tst_QPathClipper::clip3()
{
int operation = 0;
// this subset should work correctly for qreal = float
for (int i = 0; i < 20; ++i) {
for (int j = 0; j <= i; ++j) {
QPathClipper::Operation op = QPathClipper::Operation((operation++) % 3);
clipTest(i, j, op);
}
}
}
void tst_QPathClipper::testIntersections()
{
QPainterPath path1;
QPainterPath path2;
path1.addRect(0, 0, 100, 100);
path2.addRect(20, 20, 20, 20);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
QVERIFY(path1.contains(path2));
QVERIFY(!path2.contains(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addEllipse(0, 0, 100, 100);
path2.addEllipse(200, 200, 100, 100);
QVERIFY(!path1.intersects(path2));
QVERIFY(!path2.intersects(path1));
QVERIFY(!path1.contains(path2));
QVERIFY(!path2.contains(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addEllipse(0, 0, 100, 100);
path2.addEllipse(50, 50, 100, 100);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
QVERIFY(!path1.contains(path2));
QVERIFY(!path2.contains(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(100, 100, 100, 100);
path2.addRect(50, 100, 100, 20);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
QVERIFY(!path1.contains(path2));
QVERIFY(!path2.contains(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(100, 100, 100, 100);
path2.addRect(110, 201, 100, 20);
QVERIFY(!path1.intersects(path2));
QVERIFY(!path2.intersects(path1));
QVERIFY(!path1.contains(path2));
QVERIFY(!path2.contains(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(0, 0, 100, 100);
path2.addRect(20, 20, 20, 20);
path2.addRect(25, 25, 5, 5);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
QVERIFY(path1.contains(path2));
QVERIFY(!path2.contains(path1));
}
void tst_QPathClipper::testIntersections2()
{
QPainterPath path1;
QPainterPath path2;
path1 = QPainterPath();
path2 = QPainterPath();
path1.moveTo(-8,-8);
path1.lineTo(107,-8);
path1.lineTo(107,107);
path1.lineTo(-8,107);
path2.moveTo(0,0);
path2.lineTo(100,0);
path2.lineTo(100,100);
path2.lineTo(0,100);
path2.lineTo(0,0);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
QVERIFY(path1.contains(path2));
QVERIFY(!path2.contains(path1));
path1.closeSubpath();
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
QVERIFY(path1.contains(path2));
QVERIFY(!path2.contains(path1));
}
void tst_QPathClipper::testIntersections3()
{
QPainterPath path1 = Paths::node();
QPainterPath path2 = Paths::interRect();
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
}
void tst_QPathClipper::testIntersections4()
{
QPainterPath path1;
QPainterPath path2;
path1.moveTo(-5, 0);
path1.lineTo(5, 0);
path2.moveTo(0, -5);
path2.lineTo(0, 5);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
}
void tst_QPathClipper::testIntersections5()
{
QPainterPath path1;
QPainterPath path2;
path1.addRect(0, 0, 4, 4);
path1.addRect(2, 1, 1, 1);
path2.addRect(0.5, 2, 1, 1);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
}
void tst_QPathClipper::testIntersections6()
{
QPainterPath path1;
QPainterPath path2;
path1.moveTo(QPointF(-115.567, -98.3254));
path1.lineTo(QPointF(-45.9007, -98.3254));
path1.lineTo(QPointF(-45.9007, -28.6588));
path1.lineTo(QPointF(-115.567, -28.6588));
path2.moveTo(QPointF(-110, -110));
path2.lineTo(QPointF(110, -110));
path2.lineTo(QPointF(110, 110));
path2.lineTo(QPointF(-110, 110));
path2.lineTo(QPointF(-110, -110));
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
}
void tst_QPathClipper::testIntersections7()
{
QPainterPath path1;
QPainterPath path2;
path1.addRect(0, 0, 10, 10);
path2.addRect(5, 0, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(0, 0, 10, 10);
path2.addRect(0, 5, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(0, 0, 10, 10);
path2.addRect(0, 0, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
///
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(1, 1, 10, 10);
path2.addRect(5, 1, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(1, 1, 10, 10);
path2.addRect(1, 5, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(1, 1, 10, 10);
path2.addRect(1, 1, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(1, 1, 10, 10);
path2.addRect(5, 5, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(1, 1, 10, 10);
path2.addRect(9, 9, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(1, 1, 10, 10);
path2.addRect(10, 10, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(1, 1, 9, 9);
path2.addRect(11, 11, 10, 10);
QVERIFY(!path1.intersects(path2));
QVERIFY(!path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(1, 1, 10, 10);
path2.addRect(12, 12, 10, 10);
QVERIFY(!path1.intersects(path2));
QVERIFY(!path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(11, 11, 10, 10);
path2.addRect(12, 12, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();
path2 = QPainterPath();
path1.addRect(11, 11, 10, 10);
path2.addRect(10, 10, 10, 10);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
}
void tst_QPathClipper::testIntersections8()
{
QPainterPath path1 = Paths::node() * QTransform().translate(100, 50);
QPainterPath path2 = Paths::node() * QTransform().translate(150, 50);;
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = Paths::node();
path2 = Paths::node();
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = Paths::node();
path2 = Paths::node() * QTransform().translate(0, 30);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = Paths::node();
path2 = Paths::node() * QTransform().translate(30, 0);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = Paths::node();
path2 = Paths::node() * QTransform().translate(30, 30);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = Paths::node();
path2 = Paths::node() * QTransform().translate(1, 1);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
}
void tst_QPathClipper::testIntersections9()
{
QPainterPath path1;
QPainterPath path2;
path1.addRect(QRectF(-1,143, 146, 106));
path2.addRect(QRectF(-9,145, 150, 100));
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();;
path2 = QPainterPath();
path1.addRect(QRectF(-1,191, 136, 106));
path2.addRect(QRectF(-19,194, 150, 100));
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
path1 = QPainterPath();;
path2 = QPainterPath();
path1.moveTo(-1 , 143);
path1.lineTo(148 , 143);
path1.lineTo(148 , 250);
path1.lineTo(-1 , 250);
path2.moveTo(-5 , 146);
path2.lineTo(145 , 146);
path2.lineTo(145 , 246);
path2.lineTo(-5 , 246);
path2.lineTo(-5 , 146);
QVERIFY(path1.intersects(path2));
QVERIFY(path2.intersects(path1));
}
QPainterPath pathFromRect(qreal x, qreal y, qreal w, qreal h)
{
QPainterPath path;
path.addRect(QRectF(x, y, w, h));
return path;
}
QPainterPath pathFromLine(qreal x1, qreal y1, qreal x2, qreal y2)
{
QPainterPath path;
path.moveTo(x1, y1);
path.lineTo(x2, y2);
return path;
}
static int loopLength(const QWingedEdge &list, QWingedEdge::TraversalStatus status)
{
int start = status.edge;
int length = 0;
do {
++length;
status = list.next(status);
} while (status.edge != start);
return length;
}
void tst_QPathClipper::testWingedEdge()
{
{
QWingedEdge list;
int e1 = list.addEdge(QPointF(0, 0), QPointF(10, 0));
int e2 = list.addEdge(QPointF(0, 0), QPointF(0, 10));
int e3 = list.addEdge(QPointF(0, 0), QPointF(-10, 0));
int e4 = list.addEdge(QPointF(0, 0), QPointF(0, -10));
QCOMPARE(list.edgeCount(), 4);
QCOMPARE(list.vertexCount(), 5);
QWingedEdge::TraversalStatus status = { e1, QPathEdge::RightTraversal, QPathEdge::Forward };
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(status.edge, e1);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Forward);
QCOMPARE(status.traversal, QPathEdge::RightTraversal);
QCOMPARE(status.edge, e4);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(status.edge, e4);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Forward);
QCOMPARE(status.traversal, QPathEdge::RightTraversal);
QCOMPARE(status.edge, e3);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(status.edge, e3);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Forward);
QCOMPARE(status.traversal, QPathEdge::RightTraversal);
QCOMPARE(status.edge, e2);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(status.edge, e2);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Forward);
QCOMPARE(status.traversal, QPathEdge::RightTraversal);
QCOMPARE(status.edge, e1);
}
{
QWingedEdge list;
int e1 = list.addEdge(QPointF(5, 0), QPointF(5, 10));
int e2 = list.addEdge(QPointF(5, 0), QPointF(10, 5));
int e3 = list.addEdge(QPointF(10, 5), QPointF(5, 10));
int e4 = list.addEdge(QPointF(5, 0), QPointF(0, 5));
int e5 = list.addEdge(QPointF(0, 5), QPointF(5, 10));
QCOMPARE(list.edgeCount(), 5);
QCOMPARE(list.vertexCount(), 4);
QWingedEdge::TraversalStatus status = { e1, QPathEdge::RightTraversal, QPathEdge::Forward };
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(status.edge, e5);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(status.edge, e4);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Forward);
QCOMPARE(status.traversal, QPathEdge::RightTraversal);
QCOMPARE(status.edge, e1);
QCOMPARE(loopLength(list, status), 3);
status.flip();
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(loopLength(list, status), 3);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Forward);
QCOMPARE(status.traversal, QPathEdge::RightTraversal);
QCOMPARE(status.edge, e2);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Forward);
QCOMPARE(status.traversal, QPathEdge::RightTraversal);
QCOMPARE(status.edge, e3);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(status.edge, e1);
status = list.next(status);
status.flip();
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(status.edge, e2);
QCOMPARE(loopLength(list, status), 4);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Forward);
QCOMPARE(status.traversal, QPathEdge::RightTraversal);
QCOMPARE(status.edge, e4);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Forward);
QCOMPARE(status.traversal, QPathEdge::RightTraversal);
QCOMPARE(status.edge, e5);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(status.edge, e3);
status = list.next(status);
QCOMPARE(status.direction, QPathEdge::Backward);
QCOMPARE(status.traversal, QPathEdge::LeftTraversal);
QCOMPARE(status.edge, e2);
}
{
QPainterPath path = pathFromRect(0, 0, 20, 20);
QWingedEdge list(path, QPainterPath());
QCOMPARE(list.edgeCount(), 4);
QCOMPARE(list.vertexCount(), 4);
QWingedEdge::TraversalStatus status = { 0, QPathEdge::RightTraversal, QPathEdge::Forward };
QPathEdge *edge = list.edge(status.edge);
QCOMPARE(QPointF(*list.vertex(edge->first)), QPointF(0, 0));
QCOMPARE(QPointF(*list.vertex(edge->second)), QPointF(20, 0));
status = list.next(status);
QCOMPARE(status.edge, 1);
status = list.next(status);
QCOMPARE(status.edge, 2);
status = list.next(status);
QCOMPARE(status.edge, 3);
status = list.next(status);
QCOMPARE(status.edge, 0);
status.flipDirection();
status = list.next(status);
QCOMPARE(status.edge, 3);
status = list.next(status);
QCOMPARE(status.edge, 2);
status = list.next(status);
QCOMPARE(status.edge, 1);
status = list.next(status);
QCOMPARE(status.edge, 0);
QWingedEdge list2(path, pathFromRect(10, 5, 20, 10));
QCOMPARE(list2.edgeCount(), 12);
QCOMPARE(list2.vertexCount(), 10);
status.flipDirection();
QCOMPARE(loopLength(list2, status), 8);
status = list2.next(status);
edge = list2.edge(status.edge);
QCOMPARE(QPointF(*list2.vertex(edge->first)), QPointF(20, 0));
QCOMPARE(QPointF(*list2.vertex(edge->second)), QPointF(20, 5));
status = list2.next(status);
status.flipTraversal();
edge = list2.edge(status.edge);
QCOMPARE(QPointF(*list2.vertex(edge->first)), QPointF(10, 5));
QCOMPARE(QPointF(*list2.vertex(edge->second)), QPointF(20, 5));
QCOMPARE(loopLength(list2, status), 4);
status.flipDirection();
status = list2.next(status);
status.flipTraversal();
edge = list2.edge(status.edge);
QCOMPARE(QPointF(*list2.vertex(edge->first)), QPointF(20, 5));
QCOMPARE(QPointF(*list2.vertex(edge->second)), QPointF(20, 15));
QCOMPARE(loopLength(list2, status), 4);
status = list2.next(status);
status = list2.next(status);
edge = list2.edge(status.edge);
QCOMPARE(QPointF(*list2.vertex(edge->first)), QPointF(30, 5));
QCOMPARE(QPointF(*list2.vertex(edge->second)), QPointF(30, 15));
}
}
void tst_QPathClipper::zeroDerivativeCurves()
{
// zero derivative at end
{
QPainterPath a;
a.cubicTo(100, 0, 100, 100, 100, 100);
a.lineTo(100, 200);
a.lineTo(0, 200);
QPainterPath b;
b.moveTo(50, 100);
b.lineTo(150, 100);
b.lineTo(150, 150);
b.lineTo(50, 150);
QPainterPath c = a.united(b);
QVERIFY(c.contains(QPointF(25, 125)));
QVERIFY(c.contains(QPointF(75, 125)));
QVERIFY(c.contains(QPointF(125, 125)));
}
// zero derivative at start
{
QPainterPath a;
a.cubicTo(100, 0, 100, 100, 100, 100);
a.lineTo(100, 200);
a.lineTo(0, 200);
QPainterPath b;
b.moveTo(50, 100);
b.lineTo(150, 100);
b.lineTo(150, 150);
b.lineTo(50, 150);
QPainterPath c = a.united(b);
QVERIFY(c.contains(QPointF(25, 125)));
QVERIFY(c.contains(QPointF(75, 125)));
QVERIFY(c.contains(QPointF(125, 125)));
}
}
static bool strictContains(const QPainterPath &a, const QPainterPath &b)
{
return b.subtracted(a) == QPainterPath();
}
Q_DECLARE_METATYPE(QPolygonF)
void tst_QPathClipper::task204301_data()
{
QTest::addColumn<QPolygonF>("points");
{
QPointF a(51.09013255685567855835, 31.30814891308546066284);
QPointF b(98.39898971840739250183, 11.02079074829816818237);
QPointF c(91.23911846894770860672, 45.86981737054884433746);
QPointF d(66.58616356085985898972, 63.10526528395712375641);
QPointF e(82.08219456479714892794, 94.90238165489137145414);
QPointF f(16.09013040543221251255, 105.66263409332729850121);
QPointF g(10.62811442650854587555, 65.09154842235147953033);
QPointF h(5.16609844751656055450, 24.52046275138854980469);
QPolygonF v;
v << a << b << c << d << e << f << g << h;
QTest::newRow("failed_on_linux") << v;
}
{
QPointF a(50.014648437500000, 24.392089843750000);
QPointF b(92.836303710937500, 5.548706054687500);
QPointF c(92.145690917968750, 54.390258789062500);
QPointF d(65.402221679687500, 74.345092773437500);
QPointF e(80.789794921787347, 124.298095703129690);
QPointF f(34.961242675812954, 87.621459960852135);
QPointF g(18.305969238281250, 57.426757812500000);
QPointF h(1.650695800781250, 27.232055664062500);
QPolygonF v;
v << a << b << c << d << e << f << g << h;
QTest::newRow("failed_on_windows") << v;
}
}
void tst_QPathClipper::task204301()
{
QFETCH(QPolygonF, points);
QPointF a = points[0];
QPointF b = points[1];
QPointF c = points[2];
QPointF d = points[3];
QPointF e = points[4];
QPointF f = points[5];
QPointF g = points[6];
QPointF h = points[7];
QPainterPath subA;
subA.addPolygon(QPolygonF() << a << b << c << d);
subA.closeSubpath();
QPainterPath subB;
subB.addPolygon(QPolygonF() << f << e << d << g);
subB.closeSubpath();
QPainterPath subC;
subC.addPolygon(QPolygonF() << h << a << d << g);
subC.closeSubpath();
QPainterPath path;
path.addPath(subA);
path.addPath(subB);
path.addPath(subC);
QPainterPath simplified = path.simplified();
QVERIFY(strictContains(simplified, subA));
QVERIFY(strictContains(simplified, subB));
QVERIFY(strictContains(simplified, subC));
}
void tst_QPathClipper::task209056()
{
QPainterPath p1;
p1.moveTo( QPointF(188.506, 287.793) );
p1.lineTo( QPointF(288.506, 287.793) );
p1.lineTo( QPointF(288.506, 387.793) );
p1.lineTo( QPointF(188.506, 387.793) );
p1.lineTo( QPointF(188.506, 287.793) );
QPainterPath p2;
p2.moveTo( QPointF(419.447, 164.383) );
p2.cubicTo( QPointF(419.447, 69.5486), QPointF(419.447, 259.218),QPointF(419.447, 164.383) );
p2.cubicTo( QPointF(48.9378, 259.218), QPointF(131.879, 336.097),QPointF(234.192, 336.097) );
p2.cubicTo( QPointF(336.506, 336.097), QPointF(419.447, 259.218),QPointF(419.447, 164.383) );
QPainterPath p3 = p1.intersected(p2);
QVERIFY(p3 != QPainterPath());
}
void tst_QPathClipper::task251909()
{
QPainterPath p1;
p1.moveTo(0, -10);
p1.lineTo(10, -10);
p1.lineTo(10, 0);
p1.lineTo(0, 0);
QPainterPath p2;
p2.moveTo(0, 8e-14);
p2.lineTo(10, -8e-14);
p2.lineTo(10, 10);
p2.lineTo(0, 10);
QPainterPath result = p1.united(p2);
QVERIFY(result.elementCount() <= 5);
}
void tst_QPathClipper::qtbug3778()
{
QPainterPath path1;
path1.moveTo(200, 3.22409e-5);
// e-5 and higher leads to a bug
// Using 3.22409e-4 starts to work correctly
path1.lineTo(0, 0);
path1.lineTo(1.07025e-13, 1450);
path1.lineTo(750, 950);
path1.lineTo(950, 750);
path1.lineTo(200, 3.22409e-13);
QPainterPath path2;
path2.moveTo(0, 0);
path2.lineTo(200, 800);
path2.lineTo(600, 1500);
path2.lineTo(1500, 1400);
path2.lineTo(1900, 1200);
path2.lineTo(2000, 1000);
path2.lineTo(1400, 0);
path2.lineTo(0, 0);
QPainterPath p12 = path1.intersected(path2);
QVERIFY(p12.contains(QPointF(100, 100)));
}
QTEST_APPLESS_MAIN(tst_QPathClipper)
#include "tst_qpathclipper.moc"