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Fixed GetPoints function in VEllipticalArc

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branch : feature
This commit is contained in:
Valentina Zhuravska 2016-02-19 11:47:42 +02:00
parent 03086c946e
commit da2c6d3242
1 changed files with 13 additions and 9 deletions
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22
src/libs/vgeometry/vellipticalarc.cpp
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@ -288,9 +288,6 @@ QVector<QPointF> VEllipticalArc::GetPoints() const
QVector<QPointF> points; QVector<QPointF> points;
QVector<qreal> sectionAngle = GetAngles(); QVector<qreal> sectionAngle = GetAngles();
QPointF pStart;
d->isFlipped ? pStart = GetP2() : pStart = GetP1();
// if angle1 == angle2 and we have just one point of arc // if angle1 == angle2 and we have just one point of arc
if(sectionAngle.size() == 1) if(sectionAngle.size() == 1)
{ {
@ -298,14 +295,20 @@ QVector<QPointF> VEllipticalArc::GetPoints() const
} }
else else
{ {
for (int i = 0; i < sectionAngle.size()-1; ++i) qreal currentAngle;
d->isFlipped ? currentAngle = GetEndAngle() : currentAngle = GetStartAngle();
for (int i = 0; i < sectionAngle.size(); ++i)
{ {
QPointF firstPoint = GetPoint(sectionAngle.at(i)); QPointF startPoint = GetPoint(currentAngle);
QPointF point2 = GetPoint((2*sectionAngle.at(i) + sectionAngle.at(i+1))/3); QPointF ellipsePoint2 = GetPoint(currentAngle + sectionAngle.at(i)/3);
QPointF point3 = GetPoint((sectionAngle.at(i) + 2*sectionAngle.at(i+1))/3); QPointF ellipsePoint3 = GetPoint(currentAngle + 2*sectionAngle.at(i)/3);
QPointF lastPoint = GetPoint(sectionAngle.at(i+1)); QPointF lastPoint = GetPoint(currentAngle + sectionAngle.at(i));
// four points that are on ellipse
VSpline spl(VPointF(firstPoint), point2, point3, VPointF(lastPoint), 1.0); QPointF bezierPoint1 = ( -5*startPoint + 18*ellipsePoint2 -9*ellipsePoint3 + 2*lastPoint )/6;
QPointF bezierPoint2 = ( 2*startPoint - 9*ellipsePoint2 + 18*ellipsePoint3 - 5*lastPoint )/6;
VSpline spl(VPointF(startPoint), bezierPoint1, bezierPoint2, VPointF(lastPoint), 1.0);
QVector<QPointF> splPoints = spl.GetPoints(); QVector<QPointF> splPoints = spl.GetPoints();
@ -314,6 +317,7 @@ QVector<QPointF> VEllipticalArc::GetPoints() const
splPoints.removeLast(); splPoints.removeLast();
} }
points << splPoints; points << splPoints;
currentAngle += sectionAngle.at(i);
} }
} }
return points; return points;