150 lines
4.4 KiB
C++
150 lines
4.4 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
|
|
*
|
|
* This library is open source and may be redistributed and/or modified under
|
|
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
|
|
* (at your option) any later version. The full license is in LICENSE file
|
|
* included with this distribution, and on the openscenegraph.org website.
|
|
*
|
|
* 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
|
|
* OpenSceneGraph Public License for more details.
|
|
*/
|
|
|
|
|
|
#ifndef OSGVIEWER_Keystone
|
|
#define OSGVIEWER_Keystone 1
|
|
|
|
#include <osg/Geometry>
|
|
#include <osg/Geode>
|
|
#include <osg/DisplaySettings>
|
|
|
|
#include <osgGA/GUIEventHandler>
|
|
#include <osgViewer/Export>
|
|
|
|
namespace osgViewer
|
|
{
|
|
|
|
class OSGVIEWER_EXPORT Keystone : public osg::Object
|
|
{
|
|
public:
|
|
Keystone();
|
|
|
|
Keystone(const Keystone& rhs, const osg::CopyOp& copop=osg::CopyOp::SHALLOW_COPY);
|
|
|
|
META_Object(osgViewer, Keystone)
|
|
|
|
void reset();
|
|
|
|
Keystone& operator = (const Keystone& rhs);
|
|
|
|
void setKeystoneEditingEnabled(bool flag) { keystoneEditingEnabled = flag; }
|
|
bool getKeystoneEditingEnabled() const { return keystoneEditingEnabled; }
|
|
|
|
void setGridColor(const osg::Vec4& color) { gridColour = color; }
|
|
osg::Vec4& getGridColor() { return gridColour; }
|
|
const osg::Vec4& getGridColor() const { return gridColour; }
|
|
|
|
void setBottomLeft(const osg::Vec2d& v) { bottom_left = v; }
|
|
osg::Vec2d& getBottomLeft() { return bottom_left; }
|
|
const osg::Vec2d& getBottomLeft() const { return bottom_left; }
|
|
|
|
void setBottomRight(const osg::Vec2d& v) { bottom_right = v; }
|
|
osg::Vec2d& getBottomRight() { return bottom_right; }
|
|
const osg::Vec2d& getBottomRight() const { return bottom_right; }
|
|
|
|
void setTopLeft(const osg::Vec2d& v) { top_left = v; }
|
|
osg::Vec2d& getTopLeft() { return top_left; }
|
|
const osg::Vec2d& getTopLeft() const { return top_left; }
|
|
|
|
void setTopRight(const osg::Vec2d& v) { top_right = v; }
|
|
osg::Vec2d& getTopRight() { return top_right; }
|
|
const osg::Vec2d& getTopRight() const { return top_right; }
|
|
|
|
|
|
|
|
void compute3DPositions(osg::DisplaySettings* ds, osg::Vec3& tl, osg::Vec3& tr, osg::Vec3& br, osg::Vec3& bl) const;
|
|
|
|
osg::Geode* createKeystoneDistortionMesh();
|
|
|
|
osg::Node* createGrid();
|
|
|
|
/** Write the file specified by the "filename" user value field. Return true if file successfully written. */
|
|
bool writeToFile();
|
|
|
|
/** convinience function that loads and assigns any keystone files specified in the DisplaySettings::KeystoneFileNames list, return true if Keystone's assigned to DisplaySettings.*/
|
|
static bool loadKeystoneFiles(osg::DisplaySettings* ds);
|
|
|
|
|
|
protected:
|
|
|
|
bool keystoneEditingEnabled;
|
|
|
|
osg::Vec4 gridColour;
|
|
|
|
osg::Vec2d bottom_left;
|
|
osg::Vec2d bottom_right;
|
|
osg::Vec2d top_left;
|
|
osg::Vec2d top_right;
|
|
|
|
|
|
protected:
|
|
|
|
virtual ~Keystone() {}
|
|
|
|
|
|
};
|
|
|
|
class OSGVIEWER_EXPORT KeystoneHandler : public osgGA::GUIEventHandler
|
|
{
|
|
public:
|
|
|
|
KeystoneHandler(Keystone* keystone);
|
|
|
|
~KeystoneHandler() {}
|
|
|
|
bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa, osg::Object* obj, osg::NodeVisitor* nv);
|
|
|
|
void setKeystoneEditingEnabled(bool enabled) { if (_currentControlPoints.valid()) _currentControlPoints->setKeystoneEditingEnabled(enabled); }
|
|
bool getKeystoneEditingEnabled() const { return _currentControlPoints.valid() ? _currentControlPoints->getKeystoneEditingEnabled() : false; }
|
|
|
|
enum Region
|
|
{
|
|
NONE_SELECTED,
|
|
TOP_LEFT,
|
|
TOP,
|
|
TOP_RIGHT,
|
|
RIGHT,
|
|
BOTTOM_RIGHT,
|
|
BOTTOM,
|
|
BOTTOM_LEFT,
|
|
LEFT,
|
|
CENTER
|
|
};
|
|
|
|
osg::Vec2d incrementScale(const osgGA::GUIEventAdapter& ea) const;
|
|
Region computeRegion(const osgGA::GUIEventAdapter& ea) const;
|
|
void move(Region region, const osg::Vec2d& delta);
|
|
|
|
protected:
|
|
|
|
|
|
osg::ref_ptr<Keystone> _keystone;
|
|
|
|
osg::Vec2d _defaultIncrement;
|
|
osg::Vec2d _ctrlIncrement;
|
|
osg::Vec2d _shiftIncrement;
|
|
osg::Vec2d _keyIncrement;
|
|
|
|
osg::Vec2d _startPosition;
|
|
osg::ref_ptr<Keystone> _startControlPoints;
|
|
|
|
Region _selectedRegion;
|
|
osg::ref_ptr<Keystone> _currentControlPoints;
|
|
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|