138 lines
4.8 KiB
C++
138 lines
4.8 KiB
C++
/* OpenSceneGraph example, osgtext.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <osgViewer/Viewer>
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#include <osgViewer/ViewerEventHandlers>
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#include <osgDB/ReadFile>
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#include <osgGA/TrackballManipulator>
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#include <osgGA/StateSetManipulator>
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#include <osg/Geode>
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#include <osg/Geometry>
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#include <osg/Material>
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#include <osg/Shape>
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#include <osg/ShapeDrawable>
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#include <osgText/Text3D>
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#include <iostream>
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#include <sstream>
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// create text which sits in 3D space such as would be inserted into a normal model
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osg::Group* create3DText(const osg::Vec3& center,float radius)
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{
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osg::Geode* geode = new osg::Geode;
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////////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// Examples of how to set up axis/orientation alignments
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//
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float characterSize=radius*0.2f;
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float characterDepth=characterSize*0.2f;
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osg::Vec3 pos(center.x()-radius*.5f,center.y()-radius*.5f,center.z()-radius*.5f);
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osgText::Text3D* text1 = new osgText::Text3D;
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text1->setFont("fonts/arial.ttf");
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text1->setCharacterSize(characterSize);
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text1->setCharacterDepth(characterDepth);
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text1->setPosition(pos);
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text1->setDrawMode(osgText::Text3D::TEXT | osgText::Text3D::BOUNDINGBOX);
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text1->setAxisAlignment(osgText::Text3D::XY_PLANE);
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text1->setText("XY_PLANE");
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geode->addDrawable(text1);
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osgText::Text3D* text2 = new osgText::Text3D;
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text2->setFont("fonts/times.ttf");
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text2->setCharacterSize(characterSize);
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text2->setCharacterDepth(characterDepth);
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text2->setPosition(pos);
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text2->setDrawMode(osgText::Text3D::TEXT | osgText::Text3D::BOUNDINGBOX);
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text2->setAxisAlignment(osgText::Text3D::YZ_PLANE);
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text2->setText("YZ_PLANE");
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geode->addDrawable(text2);
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osgText::Text3D* text3 = new osgText::Text3D;
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text3->setFont("fonts/dirtydoz.ttf");
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text3->setCharacterSize(characterSize);
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text3->setCharacterDepth(characterDepth);
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text3->setPosition(pos);
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text3->setDrawMode(osgText::Text3D::TEXT | osgText::Text3D::BOUNDINGBOX);
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text3->setAxisAlignment(osgText::Text3D::XZ_PLANE);
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text3->setText("XZ_PLANE");
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geode->addDrawable(text3);
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osgText::Text3D* text7 = new osgText::Text3D;
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text7->setFont("fonts/times.ttf");
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text7->setCharacterSize(characterSize);
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text7->setCharacterDepth(characterSize*0.2f);
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text7->setPosition(center - osg::Vec3(0.0, 0.0, 0.6));
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text7->setDrawMode(osgText::Text3D::TEXT | osgText::Text3D::BOUNDINGBOX);
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text7->setAxisAlignment(osgText::Text3D::SCREEN);
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text7->setCharacterSizeMode(osgText::Text3D::OBJECT_COORDS);
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text7->setText("CharacterSizeMode OBJECT_COORDS (default)");
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geode->addDrawable(text7);
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osg::ShapeDrawable* shape = new osg::ShapeDrawable(new osg::Sphere(center,characterSize*0.2f));
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shape->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::ON);
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geode->addDrawable(shape);
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osg::Group* rootNode = new osg::Group;
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rootNode->addChild(geode);
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osg::Material* front = new osg::Material;
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front->setAlpha(osg::Material::FRONT_AND_BACK,1);
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front->setAmbient(osg::Material::FRONT_AND_BACK,osg::Vec4(0.2,0.2,0.2,1.0));
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front->setDiffuse(osg::Material::FRONT_AND_BACK,osg::Vec4(.0,.0,1.0,1.0));
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rootNode->getOrCreateStateSet()->setAttributeAndModes(front);
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return rootNode;
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}
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int main(int, char**)
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{
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osgViewer::Viewer viewer;
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osg::Vec3 center(0.0f,0.0f,0.0f);
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float radius = 1.0f;
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osg::Group* root = new osg::Group;
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root->addChild(create3DText(center, radius));
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viewer.setSceneData(root);
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viewer.setCameraManipulator(new osgGA::TrackballManipulator());
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viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
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viewer.addEventHandler(new osgViewer::ThreadingHandler);
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viewer.addEventHandler(new osgViewer::WindowSizeHandler);
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viewer.addEventHandler(new osgViewer::StatsHandler);
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viewer.run();
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return 0;
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}
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