FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Moved Keystone class into osgViewer library.

Browse Source
This commit is contained in:
Robert Osfield 2013-05-09 15:18:14 +00:00
parent 046c3fca7a
commit e545627571
6 changed files with 772 additions and 596 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
examples/osgkeystone/CMakeLists.txt
View File

@ -1,4 +1,5 @@
SET(TARGET_SRC osgkeystone.cpp )
SET(TARGET_SRC
osgkeystone.cpp )
#### end var setup ###
SETUP_EXAMPLE(osgkeystone)

631
examples/osgkeystone/osgkeystone.cpp
View File

@ -22,583 +22,22 @@
#include <osg/TexMat>
#include <osg/Stencil>
#include <osg/PolygonStipple>
#include <osg/ValueObject>
#include <osgDB/ReadFile>
#include <osgDB/WriteFile>
#include <osgGA/StateSetManipulator>
#include <osgGA/TrackballManipulator>
#include <osgViewer/Viewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgViewer/Keystone>
namespace osg
{
class Keystone : public osg::Object
{
public:
Keystone():
keystoneEditingEnabled(false),
gridColour(1.0f,1.0f,1.0f,1.0f),
bottom_left(-1.0,-1.0),
bottom_right(1.0,-1.0),
top_left(-1.0,1.0),
top_right(1.0,1.0) {}
using namespace osgViewer;
Keystone(const Keystone& rhs, const osg::CopyOp&):
keystoneEditingEnabled(rhs.keystoneEditingEnabled),
gridColour(rhs.gridColour),
bottom_left(rhs.bottom_left),
bottom_right(rhs.bottom_right),
top_left(rhs.top_left),
top_right(rhs.top_right) {}
META_Object(osg, Keystone)
void reset()
{
bottom_left.set(-1.0,-1.0);
bottom_right.set(1.0,-1.0);
top_left.set(-1.0,1.0);
top_right.set(1.0,1.0);
}
Keystone& operator = (const Keystone& rhs)
{
if (&rhs==this) return *this;
keystoneEditingEnabled = rhs.keystoneEditingEnabled;
gridColour = rhs.gridColour;
bottom_left = rhs.bottom_left;
bottom_right = rhs.bottom_right;
top_left = rhs.top_left;
top_right = rhs.top_right;
return *this;
}
bool keystoneEditingEnabled;
osg::Vec4 gridColour;
osg::Vec2d bottom_left;
osg::Vec2d bottom_right;
osg::Vec2d top_left;
osg::Vec2d top_right;
void compute3DPositions(osg::DisplaySettings* ds, osg::Vec3& tl, osg::Vec3& tr, osg::Vec3& br, osg::Vec3& bl) const
{
double tr_x = ((top_right-bottom_right).length()) / ((top_left-bottom_left).length());
double r_left = sqrt(tr_x);
double r_right = r_left/tr_x;
double tr_y = ((top_right-top_left).length()) / ((bottom_right-bottom_left).length());
double r_bottom = sqrt(tr_y);
double r_top = r_bottom/tr_y;
double screenDistance = ds->getScreenDistance();
double screenWidth = ds->getScreenWidth();
double screenHeight = ds->getScreenHeight();
tl = osg::Vec3(screenWidth*0.5*top_left.x(), screenHeight*0.5*top_left.y(), -screenDistance)*r_left*r_top;
tr = osg::Vec3(screenWidth*0.5*top_right.x(), screenHeight*0.5*top_right.y(), -screenDistance)*r_right*r_top;
br = osg::Vec3(screenWidth*0.5*bottom_right.x(), screenHeight*0.5*bottom_right.y(), -screenDistance)*r_right*r_bottom;
bl = osg::Vec3(screenWidth*0.5*bottom_left.x(), screenHeight*0.5*bottom_left.y(), -screenDistance)*r_left*r_bottom;
}
protected:
virtual ~Keystone() {}
};
}
class KeystoneHandler : public osgGA::GUIEventHandler
{
public:
KeystoneHandler(osg::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->keystoneEditingEnabled = enabled; }
bool getKeystoneEditingEnabled() const { return _currentControlPoints.valid() ? _currentControlPoints->keystoneEditingEnabled : 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<osg::Keystone> _keystone;
osg::Vec2d _defaultIncrement;
osg::Vec2d _ctrlIncrement;
osg::Vec2d _shiftIncrement;
osg::Vec2d _keyIncrement;
osg::Vec2d _startPosition;
osg::ref_ptr<osg::Keystone> _startControlPoints;
Region _selectedRegion;
osg::ref_ptr<osg::Keystone> _currentControlPoints;
};
KeystoneHandler::KeystoneHandler(osg::Keystone* keystone):
_keystone(keystone),
_defaultIncrement(0.0,0.0),
_ctrlIncrement(1.0,1.0),
_shiftIncrement(0.1,0.1),
_keyIncrement(0.005, 0.005),
_selectedRegion(NONE_SELECTED)
{
_startControlPoints = new osg::Keystone;
_currentControlPoints = keystone; //new Keystone;
}
KeystoneHandler::Region KeystoneHandler::computeRegion(const osgGA::GUIEventAdapter& ea) const
{
float x = ea.getXnormalized();
float y = ea.getYnormalized();
if (x<-0.33)
{
// left side
if (y<-0.33) return BOTTOM_LEFT;
else if (y<0.33) return LEFT;
else return TOP_LEFT;
}
else if (x<0.33)
{
// center side
if (y<-0.33) return BOTTOM;
else if (y<0.33) return CENTER;
else return TOP;
}
else
{
// right side
if (y<-0.33) return BOTTOM_RIGHT;
else if (y<0.33) return RIGHT;
else return TOP_RIGHT;
}
return NONE_SELECTED;
}
void KeystoneHandler::move(Region region, const osg::Vec2d& delta)
{
switch(region)
{
case(TOP_LEFT):
_currentControlPoints->top_left += delta;
break;
case(TOP):
_currentControlPoints->top_left += delta;
_currentControlPoints->top_right += delta;
break;
case(TOP_RIGHT):
_currentControlPoints->top_right += delta;
break;
case(RIGHT):
_currentControlPoints->top_right += delta;
_currentControlPoints->bottom_right += delta;
break;
case(BOTTOM_RIGHT):
_currentControlPoints->bottom_right += delta;
break;
case(BOTTOM):
_currentControlPoints->bottom_right += delta;
_currentControlPoints->bottom_left += delta;
break;
case(BOTTOM_LEFT):
_currentControlPoints->bottom_left += delta;
break;
case(LEFT):
_currentControlPoints->bottom_left += delta;
_currentControlPoints->top_left += delta;
break;
case(CENTER):
_currentControlPoints->bottom_left += delta;
_currentControlPoints->top_left += delta;
_currentControlPoints->bottom_right += delta;
_currentControlPoints->top_right += delta;
break;
case(NONE_SELECTED):
break;
}
}
osg::Vec2d KeystoneHandler::incrementScale(const osgGA::GUIEventAdapter& ea) const
{
if (_ctrlIncrement!=osg::Vec2d(0.0,0.0) && (ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_LEFT_CTRL || ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_RIGHT_CTRL )) return _ctrlIncrement;
if (_shiftIncrement!=osg::Vec2d(0.0,0.0) && (ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_LEFT_SHIFT || ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_RIGHT_SHIFT )) return _shiftIncrement;
return _defaultIncrement;
}
bool KeystoneHandler::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa, osg::Object* obj, osg::NodeVisitor* nv)
{
osg::Camera* camera = dynamic_cast<osg::Camera*>(obj);
osg::Viewport* viewport = camera ? camera->getViewport() : 0;
if (!viewport) return false;
if (ea.getEventType()==osgGA::GUIEventAdapter::KEYDOWN)
{
if (ea.getUnmodifiedKey()=='g' && (ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_LEFT_CTRL || ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_RIGHT_CTRL))
{
setKeystoneEditingEnabled(!getKeystoneEditingEnabled());
return true;
}
}
bool haveCameraMatch = false;
float x = ea.getXnormalized();
float y = ea.getYnormalized();
for(unsigned int i=0; i<ea.getNumPointerData(); ++i)
{
const osgGA::PointerData* pd = ea.getPointerData(i);
if (pd->object==obj)
{
haveCameraMatch = true;
x = pd->getXnormalized();
y = pd->getYnormalized();
break;
}
}
if (!haveCameraMatch || !getKeystoneEditingEnabled()) return false;
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::PUSH):
{
osg::Vec2d scale = incrementScale(ea);
if (scale.length2()!=0.0)
{
_selectedRegion = computeRegion(ea);
(*_startControlPoints) = (*_currentControlPoints);
_startPosition.set(x,y);
}
else
{
_selectedRegion = NONE_SELECTED;
}
return false;
}
case(osgGA::GUIEventAdapter::DRAG):
{
if (_selectedRegion!=NONE_SELECTED)
{
(*_currentControlPoints) = (*_startControlPoints);
osg::Vec2d currentPosition(x, y);
osg::Vec2d delta(currentPosition-_startPosition);
osg::Vec2d scale = incrementScale(ea);
move(_selectedRegion, osg::Vec2d(delta.x()*scale.x(), delta.y()*scale.y()) );
return true;
}
return false;
}
case(osgGA::GUIEventAdapter::RELEASE):
{
_selectedRegion = NONE_SELECTED;
return false;
}
case(osgGA::GUIEventAdapter::KEYDOWN):
{
if (ea.getKey()=='r')
{
_selectedRegion = NONE_SELECTED;
_startControlPoints->reset();
_currentControlPoints->reset();
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Up)
{
move(computeRegion(ea), osg::Vec2d(0.0, _keyIncrement.y()*incrementScale(ea).y()) );
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Down)
{
move(computeRegion(ea), osg::Vec2d(0.0, -_keyIncrement.y()*incrementScale(ea).y()) );
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Left)
{
move(computeRegion(ea), osg::Vec2d(-_keyIncrement.x()*incrementScale(ea).x(), 0.0) );
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Right)
{
move(computeRegion(ea), osg::Vec2d(_keyIncrement.x()*incrementScale(ea).x(), 0.0) );
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_7 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Home)
{
_currentControlPoints->top_left.set(x, y);
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_9 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Page_Up)
{
_currentControlPoints->top_right.set(x, y);
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_3 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Page_Down)
{
_currentControlPoints->bottom_right.set(x, y);
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_1 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_End)
{
_currentControlPoints->bottom_left.set(x, y);
}
return false;
}
default:
return false;
}
}
struct KeystoneCullCallback : public osg::Drawable::CullCallback
{
KeystoneCullCallback(osg::Keystone* keystone=0):_keystone(keystone) {}
KeystoneCullCallback(const KeystoneCullCallback&, const osg::CopyOp&) {}
META_Object(osg,KeystoneCullCallback);
/** do customized cull code, return true if drawable should be culled.*/
virtual bool cull(osg::NodeVisitor* nv, osg::Drawable* drawable, osg::RenderInfo* renderInfo) const
{
return _keystone.valid() ? !_keystone->keystoneEditingEnabled : true;
}
osg::ref_ptr<osg::Keystone> _keystone;
};
struct KeystoneUpdateCallback : public osg::Drawable::UpdateCallback
{
KeystoneUpdateCallback(osg::Keystone* keystone=0):_keystone(keystone) {}
KeystoneUpdateCallback(const KeystoneUpdateCallback&, const osg::CopyOp&) {}
META_Object(osg,KeystoneUpdateCallback);
/** do customized update code.*/
virtual void update(osg::NodeVisitor*, osg::Drawable* drawable)
{
update(dynamic_cast<osg::Geometry*>(drawable));
}
void update(osg::Geometry* geometry)
{
if (!geometry) return;
osg::Vec3Array* vertices = dynamic_cast<osg::Vec3Array*>(geometry->getVertexArray());
if (!vertices) return;
osg::Vec2Array* texcoords = dynamic_cast<osg::Vec2Array*>(geometry->getTexCoordArray(0));
if (!texcoords) return;
osg::Vec3 tl, tr, br, bl;
_keystone->compute3DPositions(osg::DisplaySettings::instance().get(), tl, tr, br, bl);
for(unsigned int i=0; i<vertices->size(); ++i)
{
osg::Vec3& v = (*vertices)[i];
osg::Vec2& t = (*texcoords)[i];
v = bl * ((1.0f-t.x())*(1.0f-t.y())) +
br * ((t.x())*(1.0f-t.y())) +
tl * ((1.0f-t.x())*(t.y())) +
tr * ((t.x())*(t.y()));
}
geometry->dirtyBound();
}
osg::ref_ptr<osg::Keystone> _keystone;
};
osg::Geode* createKeystoneDistortionMesh(osg::Keystone* keystone)
{
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
osg::ref_ptr<osg::Geometry> geometry = new osg::Geometry;
geode->addDrawable(geometry.get());
geometry->setUseDisplayList(false);
osg::ref_ptr<KeystoneUpdateCallback> kuc = new KeystoneUpdateCallback(keystone);
geometry->setUpdateCallback(kuc.get());
osg::ref_ptr<osg::Vec4Array> colours = new osg::Vec4Array;
colours->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
geometry->setColorArray(colours.get());
geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array;
geometry->setVertexArray(vertices.get());
osg::ref_ptr<osg::Vec2Array> texcoords = new osg::Vec2Array;
geometry->setTexCoordArray(0, texcoords.get());
unsigned int numRows = 7;
unsigned int numColumns = 7;
unsigned int numVertices = numRows*numColumns;
vertices->resize(numVertices);
texcoords->resize(numVertices);
for(unsigned j=0; j<numRows; j++)
{
for(unsigned i=0; i<numColumns; i++)
{
osg::Vec2& t = (*texcoords)[j*numColumns+i];
t.set(static_cast<float>(i)/static_cast<float>(numColumns-1), static_cast<float>(j)/static_cast<float>(numRows-1));
}
}
osg::ref_ptr<osg::DrawElementsUShort> elements = new osg::DrawElementsUShort(GL_TRIANGLES);
geometry->addPrimitiveSet(elements.get());
for(unsigned j=0; j<numRows-1; j++)
{
for(unsigned i=0; i<numColumns-1; i++)
{
unsigned int vi = j*numColumns+i;
elements->push_back(vi+numColumns);
elements->push_back(vi);
elements->push_back(vi+1);
elements->push_back(vi+numColumns);
elements->push_back(vi+1);
elements->push_back(vi+1+numColumns);
}
}
geometry->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
geometry->getOrCreateStateSet()->setRenderBinDetails(0, "RenderBin");
kuc->update(geometry.get());
return geode.release();
}
osg::Node* createGrid(osg::Keystone* keystone, const osg::Vec4& colour)
{
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
osg::ref_ptr<osg::Geometry> geometry = new osg::Geometry;
geode->addDrawable(geometry.get());
geometry->setUseDisplayList(false);
osg::ref_ptr<KeystoneUpdateCallback> kuc = new KeystoneUpdateCallback(keystone);
geometry->setUpdateCallback(kuc.get());
geometry->setCullCallback(new KeystoneCullCallback(keystone));
osg::ref_ptr<osg::Vec4Array> colours = new osg::Vec4Array;
colours->push_back(keystone->gridColour);
geometry->setColorArray(colours.get());
geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array;
geometry->setVertexArray(vertices.get());
osg::ref_ptr<osg::Vec2Array> texcoords = new osg::Vec2Array;
geometry->setTexCoordArray(0, texcoords.get());
osg::Vec2 origin(0.0f, 0.0f);
osg::Vec2 widthVector(1.0f, 0.0f);
osg::Vec2 heightVector(0.0f, 1.0f);
unsigned int numIntervals = 7;
// border line
{
unsigned int vi = texcoords->size();
texcoords->push_back(origin);
texcoords->push_back(origin+widthVector);
texcoords->push_back(origin+widthVector+heightVector);
texcoords->push_back(origin+heightVector);
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINE_LOOP, vi, 4));
}
// cross lines
{
unsigned int vi = texcoords->size();
osg::Vec2 v = origin;
osg::Vec2 dv = (widthVector+heightVector)/static_cast<float>(numIntervals-1);
for(unsigned int i=0; i<numIntervals; ++i)
{
texcoords->push_back(v);
v += dv;
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP, vi, numIntervals));
vi = texcoords->size();
v = origin+heightVector;
dv = (widthVector-heightVector)/static_cast<float>(numIntervals-1);
for(unsigned int i=0; i<numIntervals; ++i)
{
texcoords->push_back(v);
v += dv;
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP, vi, numIntervals));
}
// vertices lines
{
unsigned int vi = texcoords->size();
osg::Vec2 dv = widthVector/6.0;
osg::Vec2 bv = origin+dv;
osg::Vec2 tv = bv+heightVector;
for(unsigned int i=0; i<5; ++i)
{
texcoords->push_back(bv);
texcoords->push_back(tv);
bv += dv;
tv += dv;
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINES, vi, 10));
}
// horizontal lines
{
unsigned int vi = texcoords->size();
osg::Vec2 dv = heightVector/6.0;
osg::Vec2 bv = origin+dv;
osg::Vec2 tv = bv+widthVector;
for(unsigned int i=0; i<5; ++i)
{
texcoords->push_back(bv);
texcoords->push_back(tv);
bv += dv;
tv += dv;
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINES, vi, 10));
}
vertices->resize(texcoords->size());
geometry->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
geometry->getOrCreateStateSet()->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
geometry->getOrCreateStateSet()->setRenderBinDetails(1, "RenderBin");
kuc->update(geometry.get());
return geode.release();
}
osg::Texture* createKestoneDistortionTexture(int width, int height)
osg::Texture* createDistortionTexture(int width, int height)
{
osg::ref_ptr<osg::TextureRectangle> texture = new osg::TextureRectangle;
@ -612,7 +51,7 @@ osg::Texture* createKestoneDistortionTexture(int width, int height)
return texture.release();
}
osg::Camera* assignKeystoneRenderToTextureCamera(osgViewer::View* view, osg::GraphicsContext* gc, int width, int height, osg::Texture* texture)
osg::Camera* assignRenderToTextureCamera(osgViewer::View* view, osg::GraphicsContext* gc, int width, int height, osg::Texture* texture)
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setName("Render to texture camera");
@ -631,7 +70,7 @@ osg::Camera* assignKeystoneRenderToTextureCamera(osgViewer::View* view, osg::Gra
return camera.release();
}
osg::Camera* assignKeystoneDistortionCamera(osgViewer::View* view, osg::DisplaySettings* ds, osg::GraphicsContext* gc, int x, int y, int width, int height, GLenum buffer, osg::Texture* texture, osg::Keystone* keystone)
osg::Camera* assignKeystoneDistortionCamera(osgViewer::View* view, osg::DisplaySettings* ds, osg::GraphicsContext* gc, int x, int y, int width, int height, GLenum buffer, osg::Texture* texture, Keystone* keystone)
{
double screenDistance = ds->getScreenDistance();
double screenWidth = ds->getScreenWidth();
@ -639,7 +78,7 @@ osg::Camera* assignKeystoneDistortionCamera(osgViewer::View* view, osg::DisplayS
double fovy = osg::RadiansToDegrees(2.0*atan2(screenHeight/2.0,screenDistance));
double aspectRatio = screenWidth/screenHeight;
osg::Geode* geode = createKeystoneDistortionMesh(keystone);
osg::Geode* geode = keystone->createKeystoneDistortionMesh();
// new we need to add the texture to the mesh, we do so by creating a
// StateSet to contain the Texture StateAttribute.
@ -668,7 +107,7 @@ osg::Camera* assignKeystoneDistortionCamera(osgViewer::View* view, osg::DisplayS
// add subgraph to render
camera->addChild(geode);
camera->addChild(createGrid(keystone, osg::Vec4(1.0,1.0,1.0,1.0)));
camera->addChild(keystone->createGrid());
camera->setName("DistortionCorrectionCamera");
@ -853,7 +292,13 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
ds->setUseSceneViewForStereoHint(false);
osg::ref_ptr<osg::Keystone> keystone = new osg::Keystone;
std::string filename("keystone.osgt");
osg::ref_ptr<Keystone> keystone = osgDB::readFile<Keystone>(filename);
keystone->setUserValue("filename",filename);
OSG_NOTICE<<"Keystone "<<keystone.get()<<std::endl;
if (!keystone) keystone = new Keystone;
// set up view's main camera
@ -944,7 +389,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// two keystone, one for each of the left and right viewports/windows
// create distortion texture
osg::ref_ptr<osg::Texture> left_texture = createKestoneDistortionTexture(traits->width, traits->height);
osg::ref_ptr<osg::Texture> left_texture = createDistortionTexture(traits->width, traits->height);
// convert to RTT Camera
left_camera->setViewport(0, 0, traits->width, traits->height);
@ -958,7 +403,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// create distortion texture
osg::ref_ptr<osg::Texture> right_texture = createKestoneDistortionTexture(traits->width, traits->height);
osg::ref_ptr<osg::Texture> right_texture = createDistortionTexture(traits->width, traits->height);
// convert to RTT Camera
right_camera->setViewport(0, 0, traits->width, traits->height);
@ -972,7 +417,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// create Keystone left distortion camera
keystone->gridColour.set(1.0f,0.0f,0.0,1.0);
keystone->setGridColor(osg::Vec4(1.0f,0.0f,0.0,1.0));
osg::ref_ptr<osg::Camera> left_keystone_camera = assignKeystoneDistortionCamera(view, ds, gc.get(),
0, 0, traits->width, traits->height,
traits->doubleBuffer ? GL_BACK_LEFT : GL_FRONT_LEFT,
@ -1020,7 +465,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// one keystone and editing for the one window
// create distortion texture
osg::ref_ptr<osg::Texture> texture = createKestoneDistortionTexture(traits->width, traits->height);
osg::ref_ptr<osg::Texture> texture = createDistortionTexture(traits->width, traits->height);
// convert to RTT Camera
left_camera->setDrawBuffer(GL_FRONT);
@ -1080,9 +525,11 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// left keystone camera to render to left viewport/window
// right keystone camera to render to right viewport/window
// two keystone, one for each of the left and right viewports/windows
keystone->setName("left");
// create distortion texture
osg::ref_ptr<osg::Texture> left_texture = createKestoneDistortionTexture(traits->width/2, traits->height);
osg::ref_ptr<osg::Texture> left_texture = createDistortionTexture(traits->width/2, traits->height);
// convert to RTT Camera
left_camera->setViewport(0, 0, traits->width/2, traits->height);
@ -1096,7 +543,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// create distortion texture
osg::ref_ptr<osg::Texture> right_texture = createKestoneDistortionTexture(traits->width/2, traits->height);
osg::ref_ptr<osg::Texture> right_texture = createDistortionTexture(traits->width/2, traits->height);
// convert to RTT Camera
right_camera->setViewport(0, 0, traits->width/2, traits->height);
@ -1110,7 +557,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// create Keystone left distortion camera
keystone->gridColour.set(1.0f,0.0f,0.0,1.0);
keystone->setGridColor(osg::Vec4(1.0f,0.0f,0.0,1.0));
osg::ref_ptr<osg::Camera> left_keystone_camera = assignKeystoneDistortionCamera(view, ds, gc.get(),
left_start, 0, traits->width/2, traits->height,
traits->doubleBuffer ? GL_BACK : GL_FRONT,
@ -1122,9 +569,11 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
left_keystone_camera->addEventCallback(new KeystoneHandler(keystone.get()));
osg::ref_ptr<osg::Keystone> right_keystone = new osg::Keystone;
right_keystone->gridColour.set(0.0f,1.0f,0.0,1.0);
osg::ref_ptr<Keystone> right_keystone = new Keystone;
right_keystone->setGridColor(osg::Vec4(0.0f,1.0f,0.0,1.0));
right_keystone->setName("right");
// create Keystone right distortion camera
osg::ref_ptr<osg::Camera> right_keystone_camera = assignKeystoneDistortionCamera(view, ds, gc.get(),
right_start, 0, traits->width/2, traits->height,
@ -1175,7 +624,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// two keystone, one for each of the left and right viewports/windows
// create distortion texture
osg::ref_ptr<osg::Texture> left_texture = createKestoneDistortionTexture(traits->width, traits->height/2);
osg::ref_ptr<osg::Texture> left_texture = createDistortionTexture(traits->width, traits->height/2);
// convert to RTT Camera
left_camera->setViewport(0, 0, traits->width, traits->height/2);
@ -1189,7 +638,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// create distortion texture
osg::ref_ptr<osg::Texture> right_texture = createKestoneDistortionTexture(traits->width, traits->height/2);
osg::ref_ptr<osg::Texture> right_texture = createDistortionTexture(traits->width, traits->height/2);
// convert to RTT Camera
right_camera->setViewport(0, 0, traits->width, traits->height/2);
@ -1203,7 +652,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// create Keystone left distortion camera
keystone->gridColour.set(1.0f,0.0f,0.0,1.0);
keystone->setGridColor(osg::Vec4(1.0f,0.0f,0.0,1.0));
osg::ref_ptr<osg::Camera> left_keystone_camera = assignKeystoneDistortionCamera(view, ds, gc.get(),
0, left_start, traits->width, traits->height/2,
traits->doubleBuffer ? GL_BACK : GL_FRONT,
@ -1215,8 +664,8 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
left_keystone_camera->addEventCallback(new KeystoneHandler(keystone.get()));
osg::ref_ptr<osg::Keystone> right_keystone = new osg::Keystone;
right_keystone->gridColour.set(0.0f,1.0f,0.0,1.0);
osg::ref_ptr<Keystone> right_keystone = new Keystone;
right_keystone->setGridColor(osg::Vec4(0.0f,1.0f,0.0,1.0));
// create Keystone right distortion camera
osg::ref_ptr<osg::Camera> right_keystone_camera = assignKeystoneDistortionCamera(view, ds, gc.get(),
@ -1255,7 +704,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// one keystone and editing for the one window
// create distortion texture
osg::ref_ptr<osg::Texture> texture = createKestoneDistortionTexture(traits->width, traits->height);
osg::ref_ptr<osg::Texture> texture = createDistortionTexture(traits->width, traits->height);
// convert to RTT Camera
left_camera->setDrawBuffer(GL_FRONT);
@ -1300,7 +749,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
// one keystone and editing for the one window
// create distortion texture
osg::ref_ptr<osg::Texture> texture = createKestoneDistortionTexture(traits->width, traits->height);
osg::ref_ptr<osg::Texture> texture = createDistortionTexture(traits->width, traits->height);
// convert to RTT Camera
right_camera->setDrawBuffer(GL_FRONT);
@ -1407,7 +856,7 @@ void setUpViewForStereo(osgViewer::View* view, osg::DisplaySettings* ds)
}
void setUpViewForKeystone(osgViewer::View* view, osg::Keystone* keystone)
void setUpViewForKeystone(osgViewer::View* view, Keystone* keystone)
{
int screenNum = 0;
@ -1455,10 +904,10 @@ void setUpViewForKeystone(osgViewer::View* view, osg::Keystone* keystone)
// create distortion texture
osg::ref_ptr<osg::Texture> texture = createKestoneDistortionTexture(width, height);
osg::ref_ptr<osg::Texture> texture = createDistortionTexture(width, height);
// create RTT Camera
assignKeystoneRenderToTextureCamera(view, gc.get(), width, height, texture);
assignRenderToTextureCamera(view, gc.get(), width, height, texture);
// create Keystone distortion camera
osg::ref_ptr<osg::Camera> camera = assignKeystoneDistortionCamera(view, ds, gc.get(),
@ -1509,7 +958,7 @@ int main( int argc, char **argv )
}
else
{
setUpViewForKeystone(&viewer, new osg::Keystone);
setUpViewForKeystone(&viewer, new Keystone);
}
viewer.realize();

21
include/osg/DisplaySettings
View File

@ -283,9 +283,17 @@ class OSG_EXPORT DisplaySettings : public osg::Referenced
/** Get the hint of the profile mask to use in when creating graphic contexts.*/
unsigned int getGLContextProfileMask() const { return _glContextProfileMask; }
typedef std::vector<std::string> FileNames;
void setKeystoneFileNames(const FileNames& filenames) { _keystoneFileNames = filenames; }
FileNames& getKeystoneFileNames() { return _keystoneFileNames; }
const FileNames& getKeystoneFileNames() const { return _keystoneFileNames; }
typedef std::vector< osg::ref_ptr<osg::Object> > Objects;
void setKeystones(const Objects& objects) { _keystones = objects; }
Objects& getKeystones() { return _keystones; }
const Objects& getKeystones() const { return _keystones; }
/** helper function for computing the left eye projection matrix.*/
@ -298,7 +306,7 @@ class OSG_EXPORT DisplaySettings : public osg::Referenced
virtual osg::Matrixd computeRightEyeProjectionImplementation(const osg::Matrixd& projection) const;
/** helper function for computing the right eye view matrix.*/
virtual osg::Matrixd computeRightEyeViewImplementation(const osg::Matrixd& view, double eyeSeperationScale=1.0) const;
virtual osg::Matrixd computeRightEyeViewImplementation(const osg::Matrixd& view, double eyeSeperationScale=1.0) const;
protected:
@ -353,6 +361,11 @@ class OSG_EXPORT DisplaySettings : public osg::Referenced
unsigned int _glContextProfileMask;
SwapMethod _swapMethod;
FileNames _keystoneFileNames;
Objects _keystones;
};
}

143
include/osgViewer/Keystone Normal file
View File

@ -0,0 +1,143 @@
/* -*-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(osg, 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();
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

2
src/osgViewer/CMakeLists.txt
View File

@ -12,6 +12,7 @@ SET(TARGET_H
${HEADER_PATH}/CompositeViewer
${HEADER_PATH}/Export
${HEADER_PATH}/GraphicsWindow
${HEADER_PATH}/Keystone
${HEADER_PATH}/Renderer
${HEADER_PATH}/Scene
${HEADER_PATH}/Version
@ -25,6 +26,7 @@ SET(LIB_COMMON_FILES
CompositeViewer.cpp
GraphicsWindow.cpp
HelpHandler.cpp
Keystone.cpp
Renderer.cpp
Scene.cpp
ScreenCaptureHandler.cpp

568
src/osgViewer/Keystone.cpp Normal file
View File

@ -0,0 +1,568 @@
/* OpenSceneGraph example, osgkeystone.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <osg/Notify>
#include <osg/io_utils>
#include <osg/DisplaySettings>
#include <osg/ValueObject>
#include <osgDB/WriteFile>
#include <osgViewer/Keystone>
using namespace osgViewer;
Keystone::Keystone():
keystoneEditingEnabled(false),
gridColour(1.0f,1.0f,1.0f,1.0f),
bottom_left(-1.0,-1.0),
bottom_right(1.0,-1.0),
top_left(-1.0,1.0),
top_right(1.0,1.0) {}
Keystone::Keystone(const Keystone& rhs, const osg::CopyOp&):
keystoneEditingEnabled(rhs.keystoneEditingEnabled),
gridColour(rhs.gridColour),
bottom_left(rhs.bottom_left),
bottom_right(rhs.bottom_right),
top_left(rhs.top_left),
top_right(rhs.top_right) {}
void Keystone::reset()
{
bottom_left.set(-1.0,-1.0);
bottom_right.set(1.0,-1.0);
top_left.set(-1.0,1.0);
top_right.set(1.0,1.0);
}
Keystone& Keystone::operator = (const Keystone& rhs)
{
if (&rhs==this) return *this;
keystoneEditingEnabled = rhs.keystoneEditingEnabled;
gridColour = rhs.gridColour;
bottom_left = rhs.bottom_left;
bottom_right = rhs.bottom_right;
top_left = rhs.top_left;
top_right = rhs.top_right;
return *this;
}
void Keystone::compute3DPositions(osg::DisplaySettings* ds, osg::Vec3& tl, osg::Vec3& tr, osg::Vec3& br, osg::Vec3& bl) const
{
double tr_x = ((top_right-bottom_right).length()) / ((top_left-bottom_left).length());
double r_left = sqrt(tr_x);
double r_right = r_left/tr_x;
double tr_y = ((top_right-top_left).length()) / ((bottom_right-bottom_left).length());
double r_bottom = sqrt(tr_y);
double r_top = r_bottom/tr_y;
double screenDistance = ds->getScreenDistance();
double screenWidth = ds->getScreenWidth();
double screenHeight = ds->getScreenHeight();
tl = osg::Vec3(screenWidth*0.5*top_left.x(), screenHeight*0.5*top_left.y(), -screenDistance)*r_left*r_top;
tr = osg::Vec3(screenWidth*0.5*top_right.x(), screenHeight*0.5*top_right.y(), -screenDistance)*r_right*r_top;
br = osg::Vec3(screenWidth*0.5*bottom_right.x(), screenHeight*0.5*bottom_right.y(), -screenDistance)*r_right*r_bottom;
bl = osg::Vec3(screenWidth*0.5*bottom_left.x(), screenHeight*0.5*bottom_left.y(), -screenDistance)*r_left*r_bottom;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Keystone helper functions
//
struct KeystoneCullCallback : public osg::Drawable::CullCallback
{
KeystoneCullCallback(Keystone* keystone=0):_keystone(keystone) {}
KeystoneCullCallback(const KeystoneCullCallback&, const osg::CopyOp&) {}
META_Object(osg,KeystoneCullCallback);
/** do customized cull code, return true if drawable should be culled.*/
virtual bool cull(osg::NodeVisitor* nv, osg::Drawable* drawable, osg::RenderInfo* renderInfo) const
{
return _keystone.valid() ? !_keystone->getKeystoneEditingEnabled() : true;
}
osg::ref_ptr<Keystone> _keystone;
};
struct KeystoneUpdateCallback : public osg::Drawable::UpdateCallback
{
KeystoneUpdateCallback(Keystone* keystone=0):_keystone(keystone) {}
KeystoneUpdateCallback(const KeystoneUpdateCallback&, const osg::CopyOp&) {}
META_Object(osg,KeystoneUpdateCallback);
/** do customized update code.*/
virtual void update(osg::NodeVisitor*, osg::Drawable* drawable)
{
update(dynamic_cast<osg::Geometry*>(drawable));
}
void update(osg::Geometry* geometry)
{
if (!geometry) return;
osg::Vec3Array* vertices = dynamic_cast<osg::Vec3Array*>(geometry->getVertexArray());
if (!vertices) return;
osg::Vec2Array* texcoords = dynamic_cast<osg::Vec2Array*>(geometry->getTexCoordArray(0));
if (!texcoords) return;
osg::Vec3 tl, tr, br, bl;
_keystone->compute3DPositions(osg::DisplaySettings::instance().get(), tl, tr, br, bl);
for(unsigned int i=0; i<vertices->size(); ++i)
{
osg::Vec3& v = (*vertices)[i];
osg::Vec2& t = (*texcoords)[i];
v = bl * ((1.0f-t.x())*(1.0f-t.y())) +
br * ((t.x())*(1.0f-t.y())) +
tl * ((1.0f-t.x())*(t.y())) +
tr * ((t.x())*(t.y()));
}
geometry->dirtyBound();
}
osg::ref_ptr<Keystone> _keystone;
};
osg::Geode* Keystone::createKeystoneDistortionMesh()
{
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
osg::ref_ptr<osg::Geometry> geometry = new osg::Geometry;
geode->addDrawable(geometry.get());
geometry->setUseDisplayList(false);
osg::ref_ptr<KeystoneUpdateCallback> kuc = new KeystoneUpdateCallback(this);
geometry->setUpdateCallback(kuc.get());
osg::ref_ptr<osg::Vec4Array> colours = new osg::Vec4Array;
colours->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
geometry->setColorArray(colours.get());
geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array;
geometry->setVertexArray(vertices.get());
osg::ref_ptr<osg::Vec2Array> texcoords = new osg::Vec2Array;
geometry->setTexCoordArray(0, texcoords.get());
unsigned int numRows = 7;
unsigned int numColumns = 7;
unsigned int numVertices = numRows*numColumns;
vertices->resize(numVertices);
texcoords->resize(numVertices);
for(unsigned j=0; j<numRows; j++)
{
for(unsigned i=0; i<numColumns; i++)
{
osg::Vec2& t = (*texcoords)[j*numColumns+i];
t.set(static_cast<float>(i)/static_cast<float>(numColumns-1), static_cast<float>(j)/static_cast<float>(numRows-1));
}
}
osg::ref_ptr<osg::DrawElementsUShort> elements = new osg::DrawElementsUShort(GL_TRIANGLES);
geometry->addPrimitiveSet(elements.get());
for(unsigned j=0; j<numRows-1; j++)
{
for(unsigned i=0; i<numColumns-1; i++)
{
unsigned int vi = j*numColumns+i;
elements->push_back(vi+numColumns);
elements->push_back(vi);
elements->push_back(vi+1);
elements->push_back(vi+numColumns);
elements->push_back(vi+1);
elements->push_back(vi+1+numColumns);
}
}
geometry->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
geometry->getOrCreateStateSet()->setRenderBinDetails(0, "RenderBin");
kuc->update(geometry.get());
return geode.release();
}
osg::Node* Keystone::createGrid()
{
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
osg::ref_ptr<osg::Geometry> geometry = new osg::Geometry;
geode->addDrawable(geometry.get());
geometry->setUseDisplayList(false);
osg::ref_ptr<KeystoneUpdateCallback> kuc = new KeystoneUpdateCallback(this);
geometry->setUpdateCallback(kuc.get());
geometry->setCullCallback(new KeystoneCullCallback(this));
osg::ref_ptr<osg::Vec4Array> colours = new osg::Vec4Array;
colours->push_back(getGridColor());
geometry->setColorArray(colours.get());
geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array;
geometry->setVertexArray(vertices.get());
osg::ref_ptr<osg::Vec2Array> texcoords = new osg::Vec2Array;
geometry->setTexCoordArray(0, texcoords.get());
osg::Vec2 origin(0.0f, 0.0f);
osg::Vec2 widthVector(1.0f, 0.0f);
osg::Vec2 heightVector(0.0f, 1.0f);
unsigned int numIntervals = 7;
// border line
{
unsigned int vi = texcoords->size();
texcoords->push_back(origin);
texcoords->push_back(origin+widthVector);
texcoords->push_back(origin+widthVector+heightVector);
texcoords->push_back(origin+heightVector);
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINE_LOOP, vi, 4));
}
// cross lines
{
unsigned int vi = texcoords->size();
osg::Vec2 v = origin;
osg::Vec2 dv = (widthVector+heightVector)/static_cast<float>(numIntervals-1);
for(unsigned int i=0; i<numIntervals; ++i)
{
texcoords->push_back(v);
v += dv;
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP, vi, numIntervals));
vi = texcoords->size();
v = origin+heightVector;
dv = (widthVector-heightVector)/static_cast<float>(numIntervals-1);
for(unsigned int i=0; i<numIntervals; ++i)
{
texcoords->push_back(v);
v += dv;
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP, vi, numIntervals));
}
// vertices lines
{
unsigned int vi = texcoords->size();
osg::Vec2 dv = widthVector/6.0;
osg::Vec2 bv = origin+dv;
osg::Vec2 tv = bv+heightVector;
for(unsigned int i=0; i<5; ++i)
{
texcoords->push_back(bv);
texcoords->push_back(tv);
bv += dv;
tv += dv;
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINES, vi, 10));
}
// horizontal lines
{
unsigned int vi = texcoords->size();
osg::Vec2 dv = heightVector/6.0;
osg::Vec2 bv = origin+dv;
osg::Vec2 tv = bv+widthVector;
for(unsigned int i=0; i<5; ++i)
{
texcoords->push_back(bv);
texcoords->push_back(tv);
bv += dv;
tv += dv;
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_LINES, vi, 10));
}
vertices->resize(texcoords->size());
geometry->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
geometry->getOrCreateStateSet()->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
geometry->getOrCreateStateSet()->setRenderBinDetails(1, "RenderBin");
kuc->update(geometry.get());
return geode.release();
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// KeystoneHandler
//
KeystoneHandler::KeystoneHandler(Keystone* keystone):
_keystone(keystone),
_defaultIncrement(0.0,0.0),
_ctrlIncrement(1.0,1.0),
_shiftIncrement(0.1,0.1),
_keyIncrement(0.005, 0.005),
_selectedRegion(NONE_SELECTED)
{
_startControlPoints = new Keystone;
_currentControlPoints = keystone; //new Keystone;
}
KeystoneHandler::Region KeystoneHandler::computeRegion(const osgGA::GUIEventAdapter& ea) const
{
float x = ea.getXnormalized();
float y = ea.getYnormalized();
if (x<-0.33)
{
// left side
if (y<-0.33) return BOTTOM_LEFT;
else if (y<0.33) return LEFT;
else return TOP_LEFT;
}
else if (x<0.33)
{
// center side
if (y<-0.33) return BOTTOM;
else if (y<0.33) return CENTER;
else return TOP;
}
else
{
// right side
if (y<-0.33) return BOTTOM_RIGHT;
else if (y<0.33) return RIGHT;
else return TOP_RIGHT;
}
return NONE_SELECTED;
}
void KeystoneHandler::move(Region region, const osg::Vec2d& delta)
{
switch(region)
{
case(TOP_LEFT):
_currentControlPoints->getTopLeft() += delta;
break;
case(TOP):
_currentControlPoints->getTopLeft() += delta;
_currentControlPoints->getTopRight() += delta;
break;
case(TOP_RIGHT):
_currentControlPoints->getTopRight() += delta;
break;
case(RIGHT):
_currentControlPoints->getTopRight() += delta;
_currentControlPoints->getBottomRight() += delta;
break;
case(BOTTOM_RIGHT):
_currentControlPoints->getBottomRight() += delta;
break;
case(BOTTOM):
_currentControlPoints->getBottomRight() += delta;
_currentControlPoints->getBottomLeft() += delta;
break;
case(BOTTOM_LEFT):
_currentControlPoints->getBottomLeft() += delta;
break;
case(LEFT):
_currentControlPoints->getBottomLeft() += delta;
_currentControlPoints->getTopLeft() += delta;
break;
case(CENTER):
_currentControlPoints->getBottomLeft() += delta;
_currentControlPoints->getTopLeft() += delta;
_currentControlPoints->getBottomRight() += delta;
_currentControlPoints->getTopRight() += delta;
break;
case(NONE_SELECTED):
break;
}
}
osg::Vec2d KeystoneHandler::incrementScale(const osgGA::GUIEventAdapter& ea) const
{
if (_ctrlIncrement!=osg::Vec2d(0.0,0.0) && (ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_LEFT_CTRL || ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_RIGHT_CTRL )) return _ctrlIncrement;
if (_shiftIncrement!=osg::Vec2d(0.0,0.0) && (ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_LEFT_SHIFT || ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_RIGHT_SHIFT )) return _shiftIncrement;
return _defaultIncrement;
}
bool KeystoneHandler::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa, osg::Object* obj, osg::NodeVisitor* nv)
{
osg::Camera* camera = dynamic_cast<osg::Camera*>(obj);
osg::Viewport* viewport = camera ? camera->getViewport() : 0;
if (!viewport) return false;
if (ea.getEventType()==osgGA::GUIEventAdapter::KEYDOWN)
{
if (ea.getUnmodifiedKey()=='g' && (ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_LEFT_CTRL || ea.getModKeyMask()==osgGA::GUIEventAdapter::MODKEY_RIGHT_CTRL))
{
setKeystoneEditingEnabled(!getKeystoneEditingEnabled());
return true;
}
}
bool haveCameraMatch = false;
float x = ea.getXnormalized();
float y = ea.getYnormalized();
for(unsigned int i=0; i<ea.getNumPointerData(); ++i)
{
const osgGA::PointerData* pd = ea.getPointerData(i);
if (pd->object==obj)
{
haveCameraMatch = true;
x = pd->getXnormalized();
y = pd->getYnormalized();
break;
}
}
if (!haveCameraMatch || !getKeystoneEditingEnabled()) return false;
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::PUSH):
{
osg::Vec2d scale = incrementScale(ea);
if (scale.length2()!=0.0)
{
_selectedRegion = computeRegion(ea);
(*_startControlPoints) = (*_currentControlPoints);
_startPosition.set(x,y);
}
else
{
_selectedRegion = NONE_SELECTED;
}
return false;
}
case(osgGA::GUIEventAdapter::DRAG):
{
if (_selectedRegion!=NONE_SELECTED)
{
(*_currentControlPoints) = (*_startControlPoints);
osg::Vec2d currentPosition(x, y);
osg::Vec2d delta(currentPosition-_startPosition);
osg::Vec2d scale = incrementScale(ea);
move(_selectedRegion, osg::Vec2d(delta.x()*scale.x(), delta.y()*scale.y()) );
return true;
}
return false;
}
case(osgGA::GUIEventAdapter::RELEASE):
{
_selectedRegion = NONE_SELECTED;
return false;
}
case(osgGA::GUIEventAdapter::KEYDOWN):
{
if (ea.getKey()=='r')
{
_selectedRegion = NONE_SELECTED;
_startControlPoints->reset();
_currentControlPoints->reset();
}
else if (ea.getKey()=='s')
{
std::string filename("keystone_new.osgt");
if (_keystone->getUserValue("filename",filename))
{
OSG_NOTICE<<"Got filename field "<<filename<<std::endl;
// remove the user data container so that it isn't written out to file.
_keystone->setUserDataContainer(0);
}
OSG_NOTICE<<"Writing file "<<filename<<std::endl;
osgDB::writeObjectFile(*_keystone, filename);
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Up)
{
move(computeRegion(ea), osg::Vec2d(0.0, _keyIncrement.y()*incrementScale(ea).y()) );
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Down)
{
move(computeRegion(ea), osg::Vec2d(0.0, -_keyIncrement.y()*incrementScale(ea).y()) );
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Left)
{
move(computeRegion(ea), osg::Vec2d(-_keyIncrement.x()*incrementScale(ea).x(), 0.0) );
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Right)
{
move(computeRegion(ea), osg::Vec2d(_keyIncrement.x()*incrementScale(ea).x(), 0.0) );
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_7 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Home)
{
_currentControlPoints->setTopLeft(osg::Vec2d(x, y));
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_9 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Page_Up)
{
_currentControlPoints->setTopRight(osg::Vec2d(x, y));
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_3 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Page_Down)
{
_currentControlPoints->setBottomRight(osg::Vec2d(x, y));
}
else if (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_1 || ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_End)
{
_currentControlPoints->setBottomLeft(osg::Vec2d(x, y));
}
return false;
}
default:
return false;
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Serialization support
//
#include <osgDB/ObjectWrapper>
#include <osgDB/InputStream>
#include <osgDB/OutputStream>
REGISTER_OBJECT_WRAPPER( Keystone,
new osgViewer::Keystone,
osgViewer::Keystone,
"osg::Object osgViewer::Keystone" )
{
ADD_BOOL_SERIALIZER( KeystoneEditingEnabled, true );
ADD_VEC4_SERIALIZER( GridColor, osg::Vec4(1.0,1.0,1.0,1.0) );
ADD_VEC2D_SERIALIZER( BottomLeft, osg::Vec2d(0.0,0.0) );
ADD_VEC2D_SERIALIZER( BottomRight, osg::Vec2d(0.0,0.0) );
ADD_VEC2D_SERIALIZER( TopLeft, osg::Vec2d(0.0,0.0) );
ADD_VEC2D_SERIALIZER( TopRight, osg::Vec2d(0.0,0.0) );
}