116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
/*
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This file is part of Mitsuba, a physically based rendering system.
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Copyright (c) 2007-2014 by Wenzel Jakob and others.
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Mitsuba is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License Version 3
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as published by the Free Software Foundation.
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Mitsuba 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 for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#if !defined(__MITSUBA_HW_VIEWER_H_)
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#define __MITSUBA_HW_VIEWER_H_
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#include <mitsuba/render/util.h>
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#include <mitsuba/hw/renderer.h>
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#include <mitsuba/hw/font.h>
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MTS_NAMESPACE_BEGIN
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/**
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* \brief Template for simple GLUT-style viewer applications
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*
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* This class makes it possible to rapidly prototype simple OpenGL
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* applications, which can be started using the 'mtsutil' launcher.
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*
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* \ingroup libhw
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*/
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class MTS_EXPORT_HW Viewer : public Utility, public DeviceEventListener {
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public:
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/// Construct a new viewer
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Viewer();
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/**
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* \brief Program entry point
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*
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* The viewer is initialized by this method -- to add custom
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* initialization code, please override \ref init
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*/
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int run(int argc, char **argv);
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protected:
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/// Draw a heads-up display
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void drawHUD(const std::string &text);
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/// Request that the draw() routine be called
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inline void redraw() { m_leaveEventLoop = true; }
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/// To be overwritten by the subclass: main drawing routine
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virtual void draw() = 0;
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/**
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* \brief To be overwritten (optionally): perform any necessary
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* initializations
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*
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* The default implementation does nothing and returns \c true.
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*
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* \param argc Number of command line arguments
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* \param argv List of command line argument strings
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* \return \c true upon success. Otherwise, the viewer will quit.
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*/
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virtual bool init(int argc, char **argv);
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/// To be overwritten (optionally): perform any necessary cleanups
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virtual void shutdown();
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/// To be overwritten (optionally): handle a key press event
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virtual void keyPressed(const DeviceEvent &event);
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/// To be overwritten (optionally): handle a key release event
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virtual void keyReleased(const DeviceEvent &event);
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/// To be overwritten (optionally): handle a mouse button press event
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virtual void mouseButtonPressed(const DeviceEvent &event);
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/// To be overwritten (optionally): handle a mouse button release event
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virtual void mouseButtonReleased(const DeviceEvent &event);
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/// To be overwritten (optionally): handle a mouse motion event
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virtual void mouseMoved(const DeviceEvent &event);
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/// To be overwritten (optionally): handle a mouse begin drag event
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virtual void mouseBeginDrag(const DeviceEvent &event);
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/// To be overwritten (optionally): handle a mouse drag event
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virtual void mouseDragged(const DeviceEvent &event);
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/// To be overwritten (optionally): handle a mouse end drag event
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virtual void mouseEndDrag(const DeviceEvent &event);
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/// To be overwritten (optionally): handle a window resize event
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virtual void windowResized(const DeviceEvent &event);
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private:
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bool deviceEventOccurred(const DeviceEvent &event);
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MTS_DECLARE_UTILITY()
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protected:
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ref<Session> m_session;
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ref<Device> m_device;
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ref<Renderer> m_renderer;
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ref<Font> m_font;
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bool m_quit, m_leaveEventLoop;
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};
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MTS_NAMESPACE_END
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#endif /* __MITSUBA_HW_VIEWER_H_ */
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