mirror of https://github.com/CGAL/cgal
Add (buggy) IO for circular arcs
This commit is contained in:
Andreas Fabri
parent
f1b56f9a11
commit
15ad06b081
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// Copyright (c) 2008 GeometryFactory Sarl (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you may redistribute it under
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// the terms of the Q Public License version 1.0.
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// See the file LICENSE.QPL distributed with CGAL.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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//
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// Author(s) : Andreas Fabri <Andreas.Fabri@geometryfactory.com>
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// Laurent Rineau <Laurent.Rineau@geometryfactory.com>
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#ifndef CGAL_QT_CIRCULAR_ARC_GRAPHICS_ITEM_H
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#define CGAL_QT_CIRCULAR_ARC_GRAPHICS_ITEM_H
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#include <CGAL/Bbox_2.h>
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#include <CGAL/Qt/PainterOstream.h>
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#include <CGAL/Qt/GraphicsItem.h>
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#include <CGAL/Qt/Converter.h>
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#include <QGraphicsScene>
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#include <QPainter>
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#include <QStyleOption>
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namespace CGAL {
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namespace Qt {
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template <typename CK>
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class CircularArcGraphicsItem : public GraphicsItem
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{
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typedef typename CK::Point_2 Point_2;
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typedef typename CK::Circle_2 Circle_2;
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typedef typename CK::Circular_arc_2 Circular_arc_2;
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public:
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CircularArcGraphicsItem();
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void modelChanged();
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public:
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QRectF boundingRect() const;
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
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const QPen& verticesPen() const
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{
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return vertices_pen;
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}
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const QPen& edgesPen() const
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{
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return edges_pen;
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}
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void setVerticesPen(const QPen& pen)
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{
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vertices_pen = pen;
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}
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void setEdgesPen(const QPen& pen)
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{
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edges_pen = pen;
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}
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void setArc(const Circular_arc_2& a);
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protected:
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void updateBoundingBox();
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QPainter* m_painter;
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PainterOstream<CK> painterostream;
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QRectF bounding_rect;
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QPen edges_pen;
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Circular_arc_2 arc;
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};
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template <typename CK>
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void
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CircularArcGraphicsItem<CK>::setArc(const Circular_arc_2& a)
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{
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arc = a;
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updateBoundingBox();
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update();
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}
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template <typename CK>
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CircularArcGraphicsItem<CK>::CircularArcGraphicsItem()
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: painterostream(0)
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{
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this->hide();
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setZValue(3);
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}
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template <typename CK>
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QRectF
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CircularArcGraphicsItem<CK>::boundingRect() const
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{
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return QRectF(-500,-500,1000,1000);
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Converter<CK> convert;
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return convert(arc.bbox());
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}
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template <typename CK>
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void
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CircularArcGraphicsItem<CK>::paint(QPainter *painter,
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const QStyleOptionGraphicsItem *option,
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QWidget * widget)
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{
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std::cout << "CircularArcGraphicsItem<CK>::paint" << std::endl;
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painter->setPen(this->edgesPen());
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painterostream = PainterOstream<CK>(painter);
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painterostream << arc;
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}
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// We let the bounding box only grow, so that when vertices get removed
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// the maximal bbox gets refreshed in the GraphicsView
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template <typename CK>
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void
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CircularArcGraphicsItem<CK>::updateBoundingBox()
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{
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Converter<CK> convert;
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prepareGeometryChange();
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bounding_rect = convert(arc.bbox());
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}
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template <typename CK>
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void
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CircularArcGraphicsItem<CK>::modelChanged()
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{
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updateBoundingBox();
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update();
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}
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} // namespace Qt
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} // namespace CGAL
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#endif // CGAL_QT_CIRCULAR_ARC_GRAPHICS_ITEM_H
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@ -37,7 +37,7 @@
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#include <CGAL/array.h>
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namespace CGAL {
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namespac Qt {
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namespace Qt {
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template <typename K>
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class GraphicsViewCircleInput : public GraphicsViewInput
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@ -199,6 +199,8 @@ GraphicsViewCircleInput<K>::eventFilter(QObject *obj, QEvent *event)
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}
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}
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} // namespace Qt
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} // namespace CGAL
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#endif // CGAL_QT_GRAPHICS_VIEW_CIRCLE_INPUT_H
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@ -0,0 +1,180 @@
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// Copyright (c) 2008 GeometryFactory Sarl (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you may redistribute it under
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// the terms of the Q Public License version 1.0.
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// See the file LICENSE.QPL distributed with CGAL.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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//
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// Author(s) : Andreas Fabri <Andreas.Fabri@geometryfactory.com>
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// Laurent Rineau <Laurent.Rineau@geometryfactory.com>
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#ifndef CGAL_QT_GRAPHICS_VIEW_CIRCULAR_ARC_INPUT_H
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#define CGAL_QT_GRAPHICS_VIEW_CIRCULAR_ARC_INPUT_H
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#include <QGraphicsView>
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#include <QRectF>
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#include <QPointF>
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#include <QGraphicsItem>
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#include <QGraphicsEllipseItem>
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#include <QGraphicsLineItem>
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#include <QGraphicsScene>
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#include <QGraphicsSceneMouseEvent>
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#include <QPainter>
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#include <QStyleOption>
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#include <CGAL/Qt/Converter.h>
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#include <CGAL/Qt/GraphicsViewInput.h>
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#include <CGAL/Qt/CircularArcGraphicsItem.h>
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#include <CGAL/array.h>
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namespace CGAL {
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namespace Qt {
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template <typename K>
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class GraphicsViewCircularArcInput : public GraphicsViewInput
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{
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public:
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GraphicsViewCircularArcInput(QObject *parent, QGraphicsScene* s);
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protected:
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virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
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virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
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virtual void keyPressEvent(QKeyEvent *event);
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bool eventFilter(QObject *obj, QEvent *event);
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private:
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typedef typename K::Circular_arc_2 Circular_arc_2;
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typedef typename K::Point_2 Point_2;
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int count;
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QGraphicsLineItem *qline;
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CircularArcGraphicsItem<K> *qcarc;
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QPointF qp, qq, qr;
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Point_2 p, q, r;
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QGraphicsScene *scene_;
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Converter<K> convert;
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};
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template <typename K>
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GraphicsViewCircularArcInput<K>::GraphicsViewCircularArcInput(QObject *parent, QGraphicsScene* s)
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: GraphicsViewInput(parent), qline(new QGraphicsLineItem()), qcarc(new CircularArcGraphicsItem<K>()), scene_(s), count(0)
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{
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qline->hide();
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qcarc->hide();
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s->addItem(qline);
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s->addItem(qcarc);
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}
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template <typename K>
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void
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GraphicsViewCircularArcInput<K>::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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if(count == 0){
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qp = event->scenePos();
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p = convert(qp);
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qline->setLine(QLineF(qp, qp));
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qline->show();
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count = 1;
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} else if(count == 1){
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qq = event->scenePos();
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qline->setLine(QLineF(qp, qq));
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q = convert(qq);
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count = 2;
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} else if(count == 2){
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qr = event->scenePos();
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r = convert(qr);
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typename K::Collinear_2 collinear;
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if(! collinear(p,q,r)){
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qcarc->hide();
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emit generate(CGAL::make_object(Circular_arc_2(p,q,r)));
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count = 0;
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}
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}
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}
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template <typename K>
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void
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GraphicsViewCircularArcInput<K>::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
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{
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if(count == 0){
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qcarc->hide();
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qline->hide();
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return;
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} else if(count == 1) {
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qq = event->scenePos();
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q = convert(qq);
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qline->setLine(QLineF(qp, qq));
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} else if(count == 2){
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qline->hide();
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qr = event->scenePos();
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r = convert(qr);
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typename K::Collinear_2 collinear;
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if(collinear(p,q,r)){
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qcarc->hide();
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return;
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} else {
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if(CGAL::orientation(p, q, r) != CGAL::COUNTERCLOCKWISE) std::swap(p, r);
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qcarc->setArc(Circular_arc_2(p,q,r));
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qcarc->show();
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}
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}
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}
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template <typename K>
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void
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GraphicsViewCircularArcInput<K>::keyPressEvent ( QKeyEvent * event )
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{
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if(event->key() == ::Qt::Key_Delete){
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if(count>0){
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--count;
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}
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}
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}
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template <typename K>
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bool
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GraphicsViewCircularArcInput<K>::eventFilter(QObject *obj, QEvent *event)
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{
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if (event->type() == QEvent::GraphicsSceneMousePress) {
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QGraphicsSceneMouseEvent *mouseEvent = static_cast<QGraphicsSceneMouseEvent *>(event);
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mousePressEvent(mouseEvent);
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return true;
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} else if (event->type() == QEvent::GraphicsSceneMouseMove) {
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QGraphicsSceneMouseEvent *mouseEvent = static_cast<QGraphicsSceneMouseEvent *>(event);
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mouseMoveEvent(mouseEvent);
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return true;
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} else if (event->type() == QEvent::KeyPress) {
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QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
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keyPressEvent(keyEvent);
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return true;
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} else{
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// standard event processing
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return QObject::eventFilter(obj, event);
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}
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}
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} // namespace Qt
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} // namespace CGAL
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#endif // CGAL_QT_GRAPHICS_VIEW_CIRCULAR_ARC_INPUT_H
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@ -82,9 +82,42 @@ public:
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PainterOstream& operator<<(const Circle_2<K>& c)
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{
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qp->drawRect(convert(c.bbox()));
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qp->drawEllipse(convert(c.bbox()));
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return *this;
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}
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PainterOstream& operator<<(const Circular_arc_2<K>& arc)
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{
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const typename K::Circle_2 & circ = arc.supporting_circle();
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const typename K::Point_2 & center = circ.center();
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const typename K::Circular_arc_point_2 & source = arc.source();
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const typename K::Circular_arc_point_2 & target = arc.target();
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double radius = std::sqrt(CGAL::to_double(circ.squared_radius()));
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double a = std::atan2( to_double(source.y() - center.y()),
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to_double(source.x() - center.x()));
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double a2p = std::atan2( to_double(target.y() - center.y()),
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to_double(target.x() - center.x()));
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std::cout << "a = " << a << " a2p = " << a2p << std::endl;
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if (a2p <= a)
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a2p += 2 * CGAL_PI;
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double alen2 = a - a2p;
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double diff = 180/CGAL_PI*16;
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std::cout << "start " << (int)(a * diff) << std::endl;
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std::cout << "angle " << (int)(alen2 * diff) << std::endl;
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// qp->drawEllipse(convert(circ.bbox()));
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qp->drawArc(convert(circ.bbox()),
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(int)(a * diff),
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(int)(alen2 * diff));
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return *this;
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}
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};
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} // namespace Qt
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