Fix issue in tool cut spline.
Infinite loop while calculating a t parameter.
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11b8ba9e78
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e876a4d611
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@ -29,6 +29,7 @@
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- New path validation Invalid segment.
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- [smart-pattern/valentina#43] Background image.
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- Fix alias for tool Cut Arc.
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- Fix infinite loop in tool cut spline.
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# Valentina 0.7.49 July 1, 2021
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- Fix crash.
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@ -503,28 +503,38 @@ QString VAbstractCubicBezier::NameForHistory(const QString &toolName) const
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}
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//---------------------------------------------------------------------------------------------------------------------
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qreal VAbstractCubicBezier::GetParmT(qreal length) const
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auto VAbstractCubicBezier::GetParmT(qreal length) const -> qreal
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{
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const qreal base = GetRealLength();
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if (length < 0)
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{
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return 0;
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}
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else if (length > GetLength())
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if (length > base)
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{
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length = GetLength();
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length = base;
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}
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const qreal eps = 0.001 * length;
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constexpr qreal eps = UnitConvertor(0.001, Unit::Mm, Unit::Px);
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qreal parT = 0.5;
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qreal step = parT;
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qreal splLength = LengthT(parT);
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qreal splLength = 0;
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while (qAbs(splLength - length) > eps)
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do
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{
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splLength = RealLengthByT(parT);
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step /= 2.0;
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if (qFuzzyIsNull(step))
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{
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break;
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}
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splLength > length ? parT -= step : parT += step;
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splLength = LengthT(parT);
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}
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while (qAbs(splLength - length) > eps);
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return parT;
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}
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@ -591,7 +601,7 @@ qreal VAbstractCubicBezier::LengthBezier(const QPointF &p1, const QPointF &p2, c
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}
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//---------------------------------------------------------------------------------------------------------------------
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qreal VAbstractCubicBezier::LengthT(qreal t) const
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qreal VAbstractCubicBezier::RealLengthByT(qreal t) const
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{
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if (t < 0 || t > 1)
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{
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@ -622,5 +632,5 @@ qreal VAbstractCubicBezier::LengthT(qreal t) const
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seg123_234.setLength(seg123_234.length () * t);
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const QPointF p1234 = seg123_234.p2();
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return LengthBezier ( static_cast<QPointF>(GetP1()), p12, p123, p1234, GetApproximationScale());
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return LengthBezier ( static_cast<QPointF>(GetP1()), p12, p123, p1234, maxCurveApproximationScale);
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}
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@ -62,7 +62,7 @@ public:
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virtual QString NameForHistory(const QString &toolName) const override;
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qreal GetParmT(qreal length) const;
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qreal LengthT(qreal t) const;
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qreal RealLengthByT(qreal t) const;
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protected:
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virtual void CreateName() override;
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@ -75,6 +75,7 @@ protected:
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virtual QPointF GetControlPoint1() const =0;
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virtual QPointF GetControlPoint2() const =0;
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virtual auto GetRealLength() const -> qreal =0;
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};
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QT_WARNING_POP
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@ -252,3 +252,10 @@ QPointF VCubicBezier::GetControlPoint2() const
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{
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return static_cast<QPointF>(GetP3());
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}
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//---------------------------------------------------------------------------------------------------------------------
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qreal VCubicBezier::GetRealLength() const
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{
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return LengthBezier (static_cast<QPointF>(GetP1()), static_cast<QPointF>(GetP2()),
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static_cast<QPointF>(GetP3()), static_cast<QPointF>(GetP4()), maxCurveApproximationScale);
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}
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@ -84,6 +84,7 @@ public:
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protected:
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virtual QPointF GetControlPoint1() const override;
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virtual QPointF GetControlPoint2() const override;
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auto GetRealLength() const -> qreal override;
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private:
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QSharedDataPointer<VCubicBezierData> d;
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@ -611,3 +611,10 @@ QPointF VSpline::GetControlPoint2() const
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{
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return static_cast<QPointF>(GetP3 ());
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::GetRealLength() const -> qreal
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{
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return LengthBezier(static_cast<QPointF>(GetP1()), static_cast<QPointF>(GetP2()), static_cast<QPointF>(GetP3()),
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static_cast<QPointF>(GetP4()), maxCurveApproximationScale);
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}
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@ -117,6 +117,7 @@ public:
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protected:
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virtual QPointF GetControlPoint1() const override;
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virtual QPointF GetControlPoint2() const override;
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auto GetRealLength () const -> qreal override;
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private:
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QSharedDataPointer<VSplineData> d;
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QVector<qreal> CalcT(qreal curveCoord1, qreal curveCoord2, qreal curveCoord3, qreal curveCoord4,
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@ -28,6 +28,7 @@
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#include "tst_vspline.h"
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#include "../vgeometry/vspline.h"
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#include "def.h"
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#include <QtTest>
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@ -717,18 +718,56 @@ void TST_VSpline::CompareThreeWays()
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CompareSplines(spl3, spl1);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void TST_VSpline::TestParametrT_data()
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{
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QTest::addColumn<VSpline>("spl");
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QTest::addColumn<qreal>("length");
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VPointF p1(30, 39.999874015748034, QStringLiteral("p1"), 15, 30);
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VPointF p4(2883.86674323853821, 805.33182541168674, QStringLiteral("p4"), 9.9999874015748045, 15);
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VSpline spl(p1, p4, 240.60499999999999, QStringLiteral("240.605"), 260.36399999999998, QStringLiteral("260.364"),
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6614.8535433070883, QStringLiteral("175.018"), 10695.382677165355, QStringLiteral("282.982"));
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qreal base = spl.GetLength();
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qreal step = 0;
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do
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{
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QTest::newRow(qUtf8Printable(QStringLiteral("Curve 1. Step = %1").arg(step))) << spl << base * step;
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step += 0.001;
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}
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while(step <= 1);
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p1 = VPointF(3476.6410658375944, 334.08136371135333, QStringLiteral("p1"), -141.34148031496062, 109.00951181102363);
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p4 = VPointF(3483.5141183177025, 333.72231804361377, QStringLiteral("p4"), 48, 102.99930708661418);
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spl = VSpline(p1, p4, 3.1976200000000001, QStringLiteral("3.19762"), 175.24700000000001, QStringLiteral("175.247"),
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7.5076913385826796, QStringLiteral("0.198641"), 9.7351181102362219, QStringLiteral("0.257575"));
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base = spl.GetLength();
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step = 0;
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do
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{
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QTest::newRow(qUtf8Printable(QStringLiteral("Curve 2. Step = %1").arg(step))) << spl << base * step;
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step += 0.001;
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}
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while(step <= 1);
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QTest::newRow(qUtf8Printable(QStringLiteral("Curve 2. Bug.").arg(step))) << spl << 4.7813492845686536;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void TST_VSpline::TestParametrT()
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{
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VPointF p1(1168.8582803149607, 39.999874015748034, "p1", 5.0000125984251973, 9.9999874015748045);
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VPointF p4(681.33729132409951, 1815.7969526662778, "p4", 5.0000125984251973, 9.9999874015748045);
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QFETCH(VSpline, spl);
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QFETCH(qreal, length);
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VSpline spl(p1, p4, 229.381, 41.6325, 0.96294100000000005, 1.00054, 1);
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const qreal resLength = spl.RealLengthByT(spl.GetParmT(length));
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const qreal halfLength = spl.GetLength()/2.0;
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const qreal resLength = spl.LengthT(spl.GetParmT(halfLength));
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QVERIFY(qAbs(halfLength - resLength) < UnitConvertor(0.5, Unit::Mm, Unit::Px));
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QVERIFY(qAbs(length - resLength) < UnitConvertor(1, Unit::Mm, Unit::Px));
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}
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//---------------------------------------------------------------------------------------------------------------------
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@ -49,6 +49,7 @@ private slots:
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void GetSegmentPoints_RotateTool();
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void GetSegmentPoints_issue767();
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void CompareThreeWays();
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void TestParametrT_data();
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void TestParametrT();
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void TestLengthByPoint_data();
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void TestLengthByPoint();
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