ResInsight/Fwk/AppFwk/cafViewer/cafTrackBallBasedNavigation.h
Jacob Støren 5cdf307d4e WIP: Improved support for parallel projection. #168
Near plane negative to show everything
ZoomAlongRay now works for parallel projection (only implemented in
ceetron Plus)
2016-08-15 08:55:28 +02:00

99 lines
4.1 KiB
C++

//##################################################################################################
//
// Custom Visualization Core library
// Copyright (C) 2015 Ceetron Solutions AS
//
// This library may be used under the terms of either the GNU General Public License or
// the GNU Lesser General Public License as follows:
//
// GNU General Public License Usage
// This library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
// for more details.
//
// GNU Lesser General Public License Usage
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
// for more details.
//
//##################################################################################################
#pragma once
#include "cafNavigationPolicy.h"
namespace cvf {
class ManipulatorTrackball;
class Ray;
}
namespace caf
{
//--------------------------------------------------------------------------------------------------
/// This class is a work in progress to consolidate the different navigation policies that are similar.
/// It is not yet finished. We need to extract the Pan, Rotation, ... etc. codes from the
/// special input event handlers and invoke those general methods from the event handlers instead.
/// Some of the protected variables in this class is used by the
/// derived classes, and should rather be used from the general methods in this class and thus be private
///
//--------------------------------------------------------------------------------------------------
class TrackBallBasedNavigation: public NavigationPolicy
{
public:
TrackBallBasedNavigation();
virtual ~TrackBallBasedNavigation();
void enableEventEating(bool enable) { m_consumeEvents = enable; }
protected:
// General navigation policy overrides
virtual void init();
virtual void setView( const cvf::Vec3d& alongDirection, const cvf::Vec3d& upDirection );
virtual cvf::Vec3d pointOfInterest();
virtual void setPointOfInterest(cvf::Vec3d poi);
// Track ball navigation specific
void initializeRotationCenter();
cvf::ref<cvf::ManipulatorTrackball> m_trackball;
bool m_isRotCenterInitialized;
cvf::Vec3d m_pointOfInterest;
bool m_isNavigating;
bool m_hasMovedMouseDuringNavigation;
void cvfEventPos(int qtX, int qtY, int* x, int* y);
// Zooming towards cursor
cvf::ref<cvf::Ray> createZoomRay(int cvfXPos, int cvfYPos);
void zoomAlongRay( cvf::Ray* ray, int delta );
bool m_isZooming;
cvf::ref<cvf::Ray> m_zoomRay;
int m_lastPosX; /// Previous mouse position
int m_lastPosY;
bool isSupposedToConsumeEvents() { return m_consumeEvents; }
private:
bool m_consumeEvents;
};
} // End namespace caf