FGFS-4.1/OpenSceneGraph
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Added --ortho command line option to toggle use of orthographic camera or default perspective one

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This commit is contained in:
Robert Osfield
2017-08-29 13:48:06 +01:00
parent c36e47188b
commit 37487b0c0b
1 changed files with 27 additions and 9 deletions
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36
examples/osgfont/osgfont.cpp
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@@ -3,6 +3,7 @@
#include <osg/io_utils>
#include <osg/ArgumentParser>
#include <osg/Geode>
#include <osg/MatrixTransform>
#include <osgViewer/Viewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgGA/StateSetManipulator>
@@ -56,12 +57,12 @@ osg::Camera* createOrthoCamera(double width, double height)
return camera;
}
osgText::Text* createLabel(const std::string& l, const char* f, unsigned int size)
osgText::Text* createLabel(const std::string& l, const std::string& fontfile, unsigned int size)
{
static osg::Vec3 pos(10.0f, 10.0f, 0.0f);
osgText::Text* label = new osgText::Text();
osg::ref_ptr<osgText::Font> font = osgText::readRefFontFile(f);
osg::ref_ptr<osgText::Font> font = osgText::readRefFontFile(fontfile);
label->setFont(font);
label->setCharacterSize(size);
@@ -100,8 +101,27 @@ int main(int argc, char** argv)
viewer.addEventHandler(new osgViewer::StatsHandler());
viewer.addEventHandler(new osgViewer::WindowSizeHandler());
osg::Group* group = new osg::Group();
osg::Camera* camera = createOrthoCamera(1280.0f, 1024.0f);
osg::ref_ptr<osg::Group> root = new osg::Group;
bool ortho = args.read("--ortho");
if (ortho)
{
osg::ref_ptr<osg::Camera> camera = createOrthoCamera(1280.0f, 1024.0f);
root->addChild(camera.get());
root = camera;
}
else
{
osg::ref_ptr<osg::MatrixTransform> transform = new osg::MatrixTransform;
transform->setMatrix(osg::Matrixd::rotate(osg::DegreesToRadians(90.0), 1.0, 0.0, 0.0));
root->addChild(transform.get());
root = transform;
}
std::string fontfile("arial.ttf");
fontfile = argv[1];
// Create the list of desired sizes.
Sizes sizes;
@@ -122,14 +142,12 @@ int main(int argc, char** argv)
ss << *i << " 1234567890 abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ";
geode->addDrawable(createLabel(ss.str(), args[1], *i));
geode->addDrawable(createLabel(ss.str(), fontfile, *i));
}
camera->addChild(geode);
root->addChild(geode);
group->addChild(camera);
viewer.setSceneData(group);
viewer.setSceneData(root.get());
return viewer.run();
}