156 lines
4.5 KiB
C++
156 lines
4.5 KiB
C++
/****************************************************************************
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* MeshLab o o *
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* A versatile mesh processing toolbox o o *
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* _ O _ *
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* Copyright(C) 2008 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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Revision 1.1 2008/02/16 12:00:34 benedetti
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first version, adapted from meshlab's editmeasure plugin
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****************************************************************************/
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#ifndef RUBBERBAND_H
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#define RUBBERBAND_H
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#include <vcg/space/color4.h>
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#include <QGLWidget>
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namespace vcg {
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/*!
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@brief The Rubberband class.
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This class is useful for interactively draw a straight line between 2 pickable points in a GL widget.
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*/
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class Rubberband
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{
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public:
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//data:
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/// The color of the rubberband
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Color4b color;
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// functions:
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/*!
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@brief The constructor.
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Initialize the rubberband data.
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*/
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Rubberband(Color4b);
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/*!
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@brief The destructor.
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The destructor.
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*/
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virtual ~Rubberband() {}
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/*!
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@brief Render the rubberband and do the picking.
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Is important that this function is called in order to apply the Drag and Pin commands.
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@param glw the GL widget.
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*/
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void Render(QGLWidget* glw);
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/*!
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@brief RenderLine draws a line from two points.
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@param glw the GL widget.
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@param AA the start point.
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@param BB the end point.
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*/
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void RenderLine(QGLWidget* gla, Point3f AA, Point3f BB);
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/*!
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@brief Set the current rubberband endpoint.
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This function should be called after MouseMove events.
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@param cursor the cursor position.
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*/
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void Drag(QPoint cursor);
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/*!
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@brief Ask for picking.
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This function should be called after MouseRelease events.
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The first time is called, if the picking is successful, sets the startpoint.
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The second time sets, if the picking is successful, the endpoint.
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After the second time this has no effect.
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@param cursor the cursor position.
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*/
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void Pin(QPoint cursor);
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/*!
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@brief Reset the rubberband.
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*/
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void Reset();
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/*!
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@brief Return true if the rubberband has been drawn.
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@return true if the line has been drawn, false otherwise.
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*/
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bool IsReady();
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/*!
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@brief Get the rubberband start and end points.
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@param startpoint is set to the rubberband start point.
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@param endpoint is set to the rubberband end point.
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@warning Don't call this function until IsReady() returns true!
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*/
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void GetPoints(Point3f &startpoint,Point3f &endpoint);
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/*!
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@brief Render a text label near the endpoint (if it exists).
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@param text the text to render.
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@param glw the GL widget.
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*/
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private:
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// types:
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typedef enum { RUBBER_BEGIN = 0,
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RUBBER_DRAGGING = 1,
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RUBBER_DRAGGED = 2,
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} RubberPhase;
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// data:
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RubberPhase currentphase;
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QPoint qt_cursor;
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Point3f start, end;
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bool have_to_pick;
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// QFont font;
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// functions:
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vcg::Point2f DevicePixelConvert(const Point3f);
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};
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}//namespace
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#endif /*RUBBERBAND_H*/
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