Curved path can move by mouse.

--HG--
branch : feature
This commit is contained in:
Roman Telezhynskyi 2015-02-12 17:42:44 +02:00
parent d6069c9201
commit f16cccd89f
4 changed files with 151 additions and 1 deletions

View File

@ -236,6 +236,30 @@ void VSplinePath::setMaxCountPoints(const qint32 &value)
d->maxCountPoints = value;
}
//---------------------------------------------------------------------------------------------------------------------
int VSplinePath::Segment(const QPointF &p) const
{
int index = -1;
for (qint32 i = 1; i <= Count(); ++i)
{
VSpline spl = VSpline(d->path.at(i-1).P(), d->path.at(i).P(), d->path.at(i-1).Angle2(), d->path.at(i).Angle1(),
d->path.at(i-1).KAsm2(), d->path.at(i).KAsm1(), d->kCurve);
const qreal t = spl.ParamT(p);
if (qFloor(t) == -1)
{
continue;
}
else
{
index = i;
break;
}
}
return index;
}
//---------------------------------------------------------------------------------------------------------------------
qint32 VSplinePath::CountPoint() const
{

View File

@ -185,6 +185,8 @@ public:
* @param value max count.
*/
void setMaxCountPoints(const qint32 &value);
int Segment(const QPointF &p) const;
private:
QSharedDataPointer<VSplinePathData> d;
};

View File

@ -44,7 +44,7 @@ const QString VToolSplinePath::ToolType = QStringLiteral("path");
*/
VToolSplinePath::VToolSplinePath(VPattern *doc, VContainer *data, quint32 id, const QString &color,
const Source &typeCreation, QGraphicsItem *parent)
:VAbstractSpline(doc, data, id, parent)
:VAbstractSpline(doc, data, id, parent), oldPosition()
{
sceneType = SceneObject::SplinePath;
@ -52,6 +52,7 @@ VToolSplinePath::VToolSplinePath(VPattern *doc, VContainer *data, quint32 id, co
this->setPen(QPen(Qt::black, qApp->toPixel(qApp->widthHairLine())/factor));
this->setFlag(QGraphicsItem::ItemIsSelectable, true);
this->setFlag(QGraphicsItem::ItemIsFocusable, true);
this->setFlag(QGraphicsItem::ItemIsMovable, true);
this->setAcceptHoverEvents(true);
const QSharedPointer<VSplinePath> splPath = data->GeometricObject<VSplinePath>(id);
@ -167,6 +168,7 @@ VToolSplinePath* VToolSplinePath::Create(const quint32 _id, VSplinePath *path, c
connect(spl, &VToolSplinePath::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
connect(scene, &VMainGraphicsScene::NewFactor, spl, &VToolSplinePath::SetFactor);
connect(scene, &VMainGraphicsScene::DisableItem, spl, &VToolSplinePath::Disable);
connect(scene, &VMainGraphicsScene::EnableToolMove, spl, &VToolSplinePath::EnableToolMove);
doc->AddTool(id, spl);
return spl;
}
@ -414,6 +416,121 @@ void VToolSplinePath::SaveOptions(QDomElement &tag, QSharedPointer<VGObject> &ob
}
}
//---------------------------------------------------------------------------------------------------------------------
void VToolSplinePath::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
if (flags() & QGraphicsItem::ItemIsMovable)
{
if (event->button() == Qt::LeftButton && event->type() != QEvent::GraphicsSceneMouseDoubleClick)
{
VApplication::setOverrideCursor(cursorArrowCloseHand, 1, 1);
oldPosition = event->scenePos();
event->accept();
}
}
VAbstractSpline::mousePressEvent(event);
}
//---------------------------------------------------------------------------------------------------------------------
void VToolSplinePath::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
if (flags() & QGraphicsItem::ItemIsMovable)
{
if (event->button() == Qt::LeftButton && event->type() != QEvent::GraphicsSceneMouseDoubleClick)
{
//Disable cursor-arrow-closehand
VApplication::restoreOverrideCursor(cursorArrowCloseHand);
}
}
VAbstractSpline::mouseReleaseEvent(event);
}
//---------------------------------------------------------------------------------------------------------------------
void VToolSplinePath::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
// Don't need check if left mouse button was pressed. According to the Qt documentation "If you do receive this
// event, you can be certain that this item also received a mouse press event, and that this item is the current
// mouse grabber.".
VSplinePath oldSplPath = *VAbstractTool::data.GeometricObject<VSplinePath>(id);
VSplinePath newSplPath = oldSplPath;
int indexSpline = oldSplPath.Segment(oldPosition);
if (indexSpline == -1)
{
return;
}
VSpline spline = newSplPath.GetSpline(indexSpline);
const qreal t = spline.ParamT(oldPosition);
if (qFloor(t) == -1)
{
return;
}
// Magic Bezier Drag Equations follow!
// "weight" describes how the influence of the drag should be distributed
// among the handles; 0 = front handle only, 1 = back handle only.
double weight;
if (t <= 1.0 / 6.0)
{
weight = 0;
}
else if (t <= 0.5)
{
weight = (pow((6 * t - 1) / 2.0, 3)) / 2;
}
else if (t <= 5.0 / 6.0)
{
weight = (1 - pow((6 * (1-t) - 1) / 2.0, 3)) / 2 + 0.5;
}
else
{
weight = 1;
}
const QPointF delta = event->scenePos() - oldPosition;
const QPointF offset0 = ((1-weight)/(3*t*(1-t)*(1-t))) * delta;
const QPointF offset1 = (weight/(3*t*t*(1-t))) * delta;
const QPointF p2 = spline.GetP2() + offset0;
const QPointF p3 = spline.GetP3() + offset1;
oldPosition = event->scenePos(); // Now mouse here
const VSpline spl = VSpline(spline.GetP1(), p2, p3, spline.GetP4(), spline.GetKcurve());
UpdateControlPoints(spl, newSplPath, indexSpline);
MoveSplinePath *moveSplPath = new MoveSplinePath(doc, oldSplPath, newSplPath, id, this->scene());
connect(moveSplPath, &VUndoCommand::NeedLiteParsing, doc, &VPattern::LiteParseTree);
qApp->getUndoStack()->push(moveSplPath);
}
//---------------------------------------------------------------------------------------------------------------------
void VToolSplinePath::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
if (flags() & QGraphicsItem::ItemIsMovable)
{
VApplication::setOverrideCursor(cursorArrowOpenHand, 1, 1);
}
VAbstractSpline::hoverEnterEvent(event);
}
//---------------------------------------------------------------------------------------------------------------------
void VToolSplinePath::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
if (flags() & QGraphicsItem::ItemIsMovable)
{
//Disable cursor-arrow-openhand
VApplication::restoreOverrideCursor(cursorArrowOpenHand);
}
VAbstractSpline::hoverLeaveEvent(event);
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief RefreshGeometry refresh item on scene.

View File

@ -79,7 +79,14 @@ protected:
virtual void RemoveReferens();
virtual void SaveDialog(QDomElement &domElement);
virtual void SaveOptions(QDomElement &tag, QSharedPointer<VGObject> &obj);
virtual void mousePressEvent(QGraphicsSceneMouseEvent * event);
virtual void mouseReleaseEvent ( QGraphicsSceneMouseEvent * event );
virtual void mouseMoveEvent(QGraphicsSceneMouseEvent * event);
virtual void hoverEnterEvent ( QGraphicsSceneHoverEvent * event );
virtual void hoverLeaveEvent ( QGraphicsSceneHoverEvent * event );
private:
QPointF oldPosition;
void RefreshGeometry();
static void AddPathPoint(VPattern *doc, QDomElement &domElement, const VSplinePoint &splPoint);
void UpdateControlPoints(const VSpline &spl, VSplinePath &splPath, const qint32 &indexSpline) const;