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Improved the handling of osgManipulator::Constraint, DraggerCallbacks and Command so that they now use a Visitor Pattern

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to ensure the correct methods on constraints and callbaks are called for each Command.  Also fixed the handling of
Constraints when applied to composite Draggers.
This commit is contained in:
Robert Osfield
2012-01-31 10:56:52 +00:00
parent 0381914b42
commit 7664d90504
6 changed files with 107 additions and 30 deletions
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37
examples/osgmanipulator/osgmanipulator.cpp
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@@ -38,9 +38,45 @@
#include <osg/MatrixTransform>
#include <osg/Geometry>
#include <osg/Material>
#include <osg/io_utils>
#include <iostream>
class PlaneConstraint : public osgManipulator::Constraint
{
public:
PlaneConstraint() {}
virtual bool constrain(osgManipulator::TranslateInLineCommand& command) const
{
OSG_NOTICE<<"TranslateInLineCommand "<<command.getTranslation()<<std::endl;
return true;
}
virtual bool constrain(osgManipulator::TranslateInPlaneCommand& command) const
{
//command.setTranslation(osg::Vec3(0.0f,0.0f,0.0f));
OSG_NOTICE<<"TranslateInPlaneCommand "<<command.getTranslation()<<std::endl;
return true;
}
virtual bool constrain(osgManipulator::Scale1DCommand& command) const
{
//command.setScale(1.0f);
OSG_NOTICE<<"Scale1DCommand"<<command.getScale()<<std::endl;
return true;
}
virtual bool constrain(osgManipulator::Scale2DCommand& command) const
{
//command.setScale(osg::Vec2d(1.0,1.0));
OSG_NOTICE<<"Scale2DCommand "<<command.getScale()<<std::endl;
return true;
}
virtual bool constrain(osgManipulator::ScaleUniformCommand& command) const
{
OSG_NOTICE<<"ScaleUniformCommand"<<command.getScale()<<std::endl;
return true;
}
};
osgManipulator::Dragger* createDragger(const std::string& name)
{
osgManipulator::Dragger* dragger = 0;
@@ -48,6 +84,7 @@ osgManipulator::Dragger* createDragger(const std::string& name)
{
osgManipulator::TabPlaneDragger* d = new osgManipulator::TabPlaneDragger();
d->setupDefaultGeometry();
d->addConstraint(new PlaneConstraint());
dragger = d;
}
else if ("TabPlaneTrackballDragger" == name)