FGFS-4.1/OpenSceneGraph
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Added command line parsing to aid with testing of osgText by allowing osgText::FadeText to be created with various options

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This commit is contained in:
Robert Osfield 2017-10-26 12:02:56 +01:00
parent fa58d01644
commit 671ea7ae74
1 changed files with 68 additions and 2 deletions
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70
examples/osgfadetext/osgfadetext.cpp
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@ -121,10 +121,70 @@ osg::Node* createFadeText(osg::EllipsoidModel* ellipsoid)
}
int main(int, char**)
class TextSettings : public osg::NodeVisitor
{
public:
TextSettings(osg::ArgumentParser& arguments):
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
_backdropTypeSet(false),
_backdropType(osgText::Text::NONE),
_shaderTechniqueSet(false),
_shaderTechnique(osgText::GREYSCALE)
{
if (arguments.read("--outline"))
{
_backdropTypeSet = true;
_backdropType = osgText::Text::OUTLINE;
}
if (arguments.read("--sdf"))
{
_shaderTechniqueSet = true;
_shaderTechnique = osgText::SIGNED_DISTANCE_FIELD;
}
if (arguments.read("--all"))
{
_shaderTechniqueSet = true;
_shaderTechnique = osgText::ALL_FEATURES;
}
if (arguments.read("--greyscale"))
{
_shaderTechniqueSet = true;
_shaderTechnique = osgText::GREYSCALE;
}
if (arguments.read("--no-shader"))
{
_shaderTechniqueSet = true;
_shaderTechnique = osgText::NO_TEXT_SHADER;
}
}
void apply(osg::Drawable& drawable)
{
osgText::Text* text = dynamic_cast<osgText::Text*>(&drawable);
if (text)
{
if (_backdropTypeSet)
{
text->setBackdropType(_backdropType);
text->setBackdropOffset(0.1f);
text->setBackdropColor(osg::Vec4(1.0f, 0.0f, 0.0f, 1.0f));
}
if (_shaderTechniqueSet) text->setShaderTechnique(_shaderTechnique);
}
}
bool _backdropTypeSet;
osgText::Text::BackdropType _backdropType;
bool _shaderTechniqueSet;
osgText::ShaderTechnique _shaderTechnique;
};
int main(int argc, char** argv)
{
osg::ArgumentParser arguments(&argc, argv);
// construct the viewer.
osgViewer::Viewer viewer;
osgViewer::Viewer viewer(arguments);
viewer.getCamera()->setComputeNearFarMode(osg::CullSettings::COMPUTE_NEAR_FAR_USING_PRIMITIVES);
viewer.getCamera()->setNearFarRatio(0.00001f);
@ -144,6 +204,12 @@ int main(int, char**)
csn->addChild(createFadeText(csn->getEllipsoidModel()));
}
if (arguments.argc()>1)
{
TextSettings textSettings(arguments);
root->accept(textSettings);
}
viewer.setCameraManipulator(new osgGA::TerrainManipulator);
return viewer.run();