Fixed issue #458. Issue with segment of curve.

(grafted from 4d70b5b863bcad171e8185265cdcf4e177c5c90d)

--HG--
branch : develop

ChangeLog.txt

@@ -12,6 +12,7 @@
 - [#385] Add 'Open Recent' option in Tape.exe, 'File' dropdown menu.
 
 # Version 0.4.4
+- [#458] Issue with segment of curve.
 - Fixed disappearing curve if start and finish points of a segment are equal.
 - Fixed bug case where an open equidistant point is too far from a main path.
 - Fixed wrong handling with true darts points inside tool detail.

src/libs/vgeometry/vabstractcurve.cpp

@@ -58,12 +58,13 @@ VAbstractCurve::~VAbstractCurve()
 {}
 
 //---------------------------------------------------------------------------------------------------------------------
-QVector<QPointF> VAbstractCurve::GetSegmentPoints(const QPointF &begin, const QPointF &end, bool reverse) const
+QVector<QPointF> VAbstractCurve::GetSegmentPoints(const QVector<QPointF> &points, const QPointF &begin,
+                                                  const QPointF &end, bool reverse)
 {
-    QVector<QPointF> points = GetPoints();
+    QVector<QPointF> segment = points;
     if (reverse)
     {
-        points = GetReversePoints(points);
+        segment = GetReversePoints(segment);
     }
 
     QPointF start = begin;
@@ -71,13 +72,19 @@ QVector<QPointF> VAbstractCurve::GetSegmentPoints(const QPointF &begin, const QP
 
     if (begin == end)
     {
-        start = points.first();
+        start = segment.first();
-        finish = points.last();
+        finish = segment.last();
     }
 
-    points = FromBegin(points, start);
+    segment = FromBegin(segment, start);
-    points = ToEnd(points, finish);
+    segment = ToEnd(segment, finish);
-    return points;
+    return segment;
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QVector<QPointF> VAbstractCurve::GetSegmentPoints(const QPointF &begin, const QPointF &end, bool reverse) const
+{
+    return GetSegmentPoints(GetPoints(), begin, end, reverse);
 }
 
 

src/libs/vgeometry/vabstractcurve.h

@@ -49,6 +49,8 @@ public:
     virtual ~VAbstractCurve() Q_DECL_OVERRIDE;
 
     virtual QVector<QPointF> GetPoints() const =0;
+    static QVector<QPointF>  GetSegmentPoints(const QVector<QPointF> &points, const QPointF &begin, const QPointF &end,
+                                              bool reverse = false);
     QVector<QPointF>         GetSegmentPoints(const QPointF &begin, const QPointF &end, bool reverse = false) const;
 
     virtual QPainterPath     GetPath(PathDirection direction = PathDirection::Hide) const;

src/libs/vgeometry/vgobject.cpp

@@ -440,21 +440,28 @@ void VGObject::LineCoefficients(const QLineF &line, qreal *a, qreal *b, qreal *c
  */
 bool VGObject::IsPointOnLineSegment(const QPointF &t, const QPointF &p1, const QPointF &p2)
 {
+    // Round points. 1 mm now more than 3 pixels (96 dpi). So, no big reasons to work with float values.
+    // See bug issue #458 Issue with segment of curve.
+    // https://bitbucket.org/dismine/valentina/issues/458/issue-with-segment-of-curve
+    const QPoint tR = t.toPoint();
+    const QPoint p1R = p1.toPoint();
+    const QPoint p2R = p2.toPoint();
+
     // The test point must lie inside the bounding box spanned by the two line points.
-    if (not ( (p1.x() <= t.x() && t.x() <= p2.x()) || (p2.x() <= t.x() && t.x() <= p1.x()) ))
+    if (not ( (p1R.x() <= tR.x() && tR.x() <= p2R.x()) || (p2R.x() <= tR.x() && tR.x() <= p1R.x()) ))
     {
         // test point not in x-range
         return false;
     }
 
-    if (not ( (p1.y() <= t.y() && t.y() <= p2.y()) || (p2.y() <= t.y() && t.y() <= p1.y()) ))
+    if (not ( (p1R.y() <= tR.y() && tR.y() <= p2R.y()) || (p2R.y() <= tR.y() && tR.y() <= p1R.y()) ))
     {
         // test point not in y-range
         return false;
     }
 
     // Test via the perp dot product (PDP)
-    return IsPointOnLineviaPDP(t, p1, p2);
+    return IsPointOnLineviaPDP(tR, p1R, p2R);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -474,7 +481,7 @@ bool VGObject::IsPointOnLineviaPDP(const QPointF &t, const QPointF &p1, const QP
  * This is actually the same as the area of the triangle defined by the three points, multiplied by 2.
  * @return 2 * triangleArea(a,b,c)
  */
-double VGObject::PerpDotProduct(const QPointF &t, const QPointF &p1, const QPointF &p2)
+double VGObject::PerpDotProduct(const QPointF &p1, const QPointF &p2, const QPointF &t)
 {
     return (p1.x() - t.x()) * (p2.y() - t.y()) - (p1.y() - t.y()) * (p2.x() - t.x());
 }

src/libs/vgeometry/vgobject.h

@@ -92,7 +92,7 @@ private:
     QSharedDataPointer<VGObjectData> d;
 
     static bool    IsPointOnLineviaPDP(const QPointF &t, const QPointF &p1, const QPointF &p2);
-    static double  PerpDotProduct(const QPointF &t, const QPointF &p1, const QPointF &p2);
+    static double  PerpDotProduct(const QPointF &p1, const QPointF &p2, const QPointF &t);
     static double  GetEpsilon(const QPointF &p1, const QPointF &p2);
 
     static int     PointInCircle (const QPointF &p, const QPointF &center, qreal radius);

src/test/ValentinaTest/ValentinaTest.pro

@@ -54,6 +54,7 @@ SOURCES += \
     tst_vcommandline.cpp \
     tst_tstranslation.cpp \
     tst_vdetail.cpp \
+    tst_vabstractcurve.cpp \
     tst_findpoint.cpp \
     tst_vellipticalarc.cpp
 
@@ -77,6 +78,7 @@ HEADERS += \
     tst_vcommandline.h \
     tst_tstranslation.h \
     tst_vdetail.h \
+    tst_vabstractcurve.h \
     tst_findpoint.h \
     tst_vellipticalarc.h
 

src/test/ValentinaTest/qttestmainlambda.cpp

@@ -47,6 +47,7 @@
 #include "tst_tstranslation.h"
 #include "tst_vdetail.h"
 #include "tst_findpoint.h"
+#include "tst_vabstractcurve.h"
 
 int main(int argc, char** argv)
 {
@@ -80,6 +81,7 @@ int main(int argc, char** argv)
     ASSERT_TEST(new TST_Misc());
     ASSERT_TEST(new TST_VCommandLine());
     ASSERT_TEST(new TST_TSTranslation());
+    ASSERT_TEST(new TST_VAbstractCurve());
 
     return status;
 }

src/test/ValentinaTest/tst_vabstractcurve.cpp

@@ -0,0 +1,97 @@
+/************************************************************************
+ **
+ **  @file   tst_vabstractcurve.cpp
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   15 3, 2016
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentine project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2016 Valentina project
+ **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#include "tst_vabstractcurve.h"
+#include "../vgeometry/vabstractcurve.h"
+
+#include <QtTest>
+
+//---------------------------------------------------------------------------------------------------------------------
+TST_VAbstractCurve::TST_VAbstractCurve(QObject *parent)
+    : AbstractTest(parent)
+{
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void TST_VAbstractCurve::GetSegmentPoints_issue458()
+{
+    // Real case. Issue #458. https://bitbucket.org/dismine/valentina/issues/458/issue-with-segment-of-curve
+    // See file AnalyzeStrangeIssueBug_isotated.val
+
+    QVector<QPointF> curve;
+    curve.append(QPointF(-11.267867716535433, -621.9401574803151));
+    curve.append(QPointF(28.929492484925593, -621.8607845421614));
+    curve.append(QPointF(111.02420124017556, -621.0204613872887));
+    curve.append(QPointF(192.81663506084445, -619.5641192834869));
+    curve.append(QPointF(271.7042817720716, -617.7160624366999));
+    curve.append(QPointF(380.07266406952584, -614.6790467524394));
+    curve.append(QPointF(489.18908873700275, -611.324295072277));
+    curve.append(QPointF(520.2546519685039, -610.6015748031497));
+    curve.append(QPointF(520.2546519685039, -610.6015748031497));
+    curve.append(QPointF(533.2501074340664, -610.4104062194663));
+    curve.append(QPointF(558.2116609090922, -610.3912171914401));
+    curve.append(QPointF(581.9682255886432, -610.7865804010944));
+    curve.append(QPointF(604.5534016414362, -611.572911926731));
+    curve.append(QPointF(626.0007892361873, -612.7266278466516));
+    curve.append(QPointF(646.343988541613, -614.224144239158));
+    curve.append(QPointF(665.6165997264297, -616.0418771825518));
+    curve.append(QPointF(683.8522229593539, -618.1562427551349));
+    curve.append(QPointF(701.0844584091014, -620.543657035209));
+    curve.append(QPointF(717.3469062443893, -623.1805361010756));
+    curve.append(QPointF(740.1064499883596, -627.5281982218287));
+    curve.append(QPointF(767.2158219967725, -634.0157380079388));
+    curve.append(QPointF(791.0508465842408, -641.0766263466508));
+    curve.append(QPointF(811.8803251004954, -648.5221918643786));
+    curve.append(QPointF(829.9730588952673, -656.1637631875356));
+    curve.append(QPointF(845.5978493182879, -663.8126689425358));
+    curve.append(QPointF(859.0234977192879, -671.2802377557932));
+    curve.append(QPointF(875.8174743129977, -681.8104925021551));
+    curve.append(QPointF(892.6995351796473, -693.3935519951781));
+    curve.append(QPointF(899.4017385826772, -697.5307086614174));
+
+    QPointF begin (541.621890489816, -610.374541985993);
+    QPointF end	(660.2625170532651, -735.7793605757131);
+
+    const QVector<QPointF> points = VAbstractCurve::GetSegmentPoints(curve, begin, end, true);
+
+    QVector<QPointF> origPoints;
+    origPoints.append(QPointF(541.621890489816, -610.374541985993));
+    origPoints.append(QPointF(533.2501074340664, -610.4104062194663));
+    origPoints.append(QPointF(520.2546519685039, -610.6015748031497));
+    origPoints.append(QPointF(520.2546519685039, -610.6015748031497));
+    origPoints.append(QPointF(489.18908873700275, -611.324295072277));
+    origPoints.append(QPointF(380.07266406952584, -614.6790467524394));
+    origPoints.append(QPointF(271.7042817720716, -617.7160624366999));
+    origPoints.append(QPointF(192.81663506084445, -619.5641192834869));
+    origPoints.append(QPointF(111.02420124017556, -621.0204613872887));
+    origPoints.append(QPointF(28.929492484925593, -621.8607845421614));
+    origPoints.append(QPointF(-11.267867716535433, -621.9401574803151));
+
+    // Begin comparison
+    Comparison(points, origPoints);
+}

src/test/ValentinaTest/tst_vabstractcurve.h

@@ -0,0 +1,45 @@
+/************************************************************************
+ **
+ **  @file   tst_vabstractcurve.h
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   15 3, 2016
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentine project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2016 Valentina project
+ **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#ifndef TST_VABSTRACTCURVE_H
+#define TST_VABSTRACTCURVE_H
+
+#include "abstracttest.h"
+
+class TST_VAbstractCurve : public AbstractTest
+{
+    Q_OBJECT
+public:
+    explicit TST_VAbstractCurve(QObject *parent = nullptr);
+
+private slots:
+    void GetSegmentPoints_issue458();
+
+};
+
+#endif // TST_VABSTRACTCURVE_H