// create text which sits in 3D space such as would be inserted into a normal model
osg::Group* create3DText(const osg::Vec3& center,float radius)
{
osg::Geode* geode = new osg::Geode;
////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Examples of how to set up axis/orientation alignments
//
float characterSize=radius*0.2f;
osg::Vec3 pos(center.x()-radius*.5f,center.y()-radius*.5f,center.z()-radius*.5f);
osgText::Text* text1 = new osgText::Text;
text1->setFont(new osgText::Font(new osgQt::QFontImplementation(QFont("Times"))));
text1->setCharacterSize(characterSize);
text1->setPosition(pos);
text1->setAxisAlignment(osgText::Text::XY_PLANE);
text1->setText("XY_PLANE");
geode->addDrawable(text1);
osgText::Text* text2 = new osgText::Text;
text2->setFont(new osgText::Font(new osgQt::QFontImplementation(QFont("Times"))));
text2->setCharacterSize(characterSize);
text2->setPosition(pos);
text2->setAxisAlignment(osgText::Text::YZ_PLANE);
text2->setText("YZ_PLANE");
geode->addDrawable(text2);
osgText::Text* text3 = new osgText::Text;
text3->setFont(new osgText::Font(new osgQt::QFontImplementation(QFont("Times"))));
text3->setCharacterSize(characterSize);
text3->setPosition(pos);
text3->setAxisAlignment(osgText::Text::XZ_PLANE);
text3->setText("XZ_PLANE");
geode->addDrawable(text3);
osgText::Text* text4 = new osgText::Text;
text4->setFont(new osgText::Font(new osgQt::QFontImplementation(QFont("Times"))));
text4->setCharacterSize(characterSize);
text4->setPosition(center);
text4->setAxisAlignment(osgText::Text::SCREEN);
osg::Vec4 characterSizeModeColor(1.0f,0.0f,0.5f,1.0f);
osgText::Text* text5 = new osgText::Text;
text5->setColor(characterSizeModeColor);
text5->setFont(new osgText::Font(new osgQt::QFontImplementation(QFont("Times"))));
//text5->setCharacterSize(characterSize);
text5->setCharacterSize(32.0f); // medium
text5->setPosition(center - osg::Vec3(0.0, 0.0, 0.2));
text5->setAxisAlignment(osgText::Text::SCREEN);
text5->setCharacterSizeMode(osgText::Text::SCREEN_COORDS);
text5->setText("CharacterSizeMode SCREEN_COORDS(size 32.0)");
geode->addDrawable(text5);
osgText::Text* text6 = new osgText::Text;
text6->setColor(characterSizeModeColor);
text6->setFont(new osgText::Font(new osgQt::QFontImplementation(QFont("Times"))));
text6->setCharacterSize(characterSize);
text6->setPosition(center - osg::Vec3(0.0, 0.0, 0.4));
text6->setAxisAlignment(osgText::Text::SCREEN);
text6->setCharacterSizeMode(osgText::Text::OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT);
text6->setText("CharacterSizeMode OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT");
geode->addDrawable(text6);
osgText::Text* text7 = new osgText::Text;
text7->setColor(characterSizeModeColor);
text7->setFont(new osgText::Font(new osgQt::QFontImplementation(QFont("Times"))));
text7->setCharacterSize(characterSize);
text7->setPosition(center - osg::Vec3(0.0, 0.0, 0.6));
text7->setAxisAlignment(osgText::Text::SCREEN);
text7->setCharacterSizeMode(osgText::Text::OBJECT_COORDS);
text7->setText("CharacterSizeMode OBJECT_COORDS (default)");
geode->addDrawable(text7);
#if 1
// reproduce outline bounding box compute problem with backdrop on.
text4->setBackdropType(osgText::Text::OUTLINE);
text4->setDrawMode(osgText::Text::TEXT | osgText::Text::BOUNDINGBOX);
#endif
text4->setText("SCREEN");
geode->addDrawable(text4);
osg::ShapeDrawable* shape = new osg::ShapeDrawable(new osg::Sphere(center,characterSize*0.2f));
shape->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::ON);
geode->addDrawable(shape);
osg::Group* rootNode = new osg::Group;
rootNode->addChild(geode);
return rootNode;
}
// create text which sits in 3D space such as would be inserted into a normal model
osg::Group* create3DText(const osg::Vec3& center,float radius)
{
osg::Geode* geode = new osg::Geode;
bool useVBOs = false;
#if defined(OSG_GL3_AVAILABLE) && !defined(OSG_GL2_AVAILABLE) && !defined(OSG_GL1_AVAILABLE)
useVBOs = true;
osg::Program* program = new osg::Program;
program->addShader(new osg::Shader(osg::Shader::VERTEX, gl3TextVertexShader));
program->addShader(new osg::Shader(osg::Shader::FRAGMENT, gl3TextFragmentShader));
geode->getOrCreateStateSet()->setAttributeAndModes(program, osg::StateAttribute::ON);
#endif
////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Examples of how to set up axis/orientation alignments
//
float characterSize=radius*0.2f;
osg::Vec3 pos(center.x()-radius*.5f,center.y()-radius*.5f,center.z()-radius*.5f);
osgText::Text* text1 = new osgText::Text;
text1->setUseVertexBufferObjects(useVBOs);
text1->setFont("fonts/times.ttf");
text1->setCharacterSize(characterSize);
text1->setPosition(pos);
text1->setAxisAlignment(osgText::Text::XY_PLANE);
text1->setText("XY_PLANE");
geode->addDrawable(text1);
osgText::Text* text2 = new osgText::Text;
text2->setUseVertexBufferObjects(useVBOs);
text2->setFont("fonts/times.ttf");
text2->setCharacterSize(characterSize);
text2->setPosition(pos);
text2->setAxisAlignment(osgText::Text::YZ_PLANE);
text2->setText("YZ_PLANE");
geode->addDrawable(text2);
osgText::Text* text3 = new osgText::Text;
text3->setUseVertexBufferObjects(useVBOs);
text3->setFont("fonts/times.ttf");
text3->setCharacterSize(characterSize);
text3->setPosition(pos);
text3->setAxisAlignment(osgText::Text::XZ_PLANE);
text3->setText("XZ_PLANE");
geode->addDrawable(text3);
osg::Vec4 characterSizeModeColor(1.0f,0.0f,0.5f,1.0f);
osgText::Text* text4 = new osgText::Text;
text4->setUseVertexBufferObjects(useVBOs);
text4->setFont("fonts/times.ttf");
text4->setCharacterSize(characterSize);
text4->setPosition(center);
text4->setAxisAlignment(osgText::Text::SCREEN);
// reproduce outline bounding box compute problem with backdrop on.
text4->setBackdropType(osgText::Text::OUTLINE);
text4->setDrawMode(osgText::Text::TEXT | osgText::Text::BOUNDINGBOX);
text4->setText("SCREEN");
geode->addDrawable(text4);
osgText::Text* text5 = new osgText::Text;
text5->setUseVertexBufferObjects(useVBOs);
text5->setColor(characterSizeModeColor);
text5->setFont("fonts/times.ttf");
//text5->setCharacterSize(characterSize);
text5->setCharacterSize(32.0f); // medium
text5->setPosition(center - osg::Vec3(0.0, 0.0, 0.2));
text5->setAxisAlignment(osgText::Text::SCREEN);
text5->setCharacterSizeMode(osgText::Text::SCREEN_COORDS);
text5->setDrawMode(osgText::Text::TEXT | osgText::Text::BOUNDINGBOX);
text5->setText("CharacterSizeMode SCREEN_COORDS(size 32.0)");
geode->addDrawable(text5);
osgText::Text* text6 = new osgText::Text;
text6->setUseVertexBufferObjects(useVBOs);
text6->setColor(characterSizeModeColor);
text6->setFont("fonts/times.ttf");
text6->setCharacterSize(characterSize);
text6->setPosition(center - osg::Vec3(0.0, 0.0, 0.4));
text6->setAxisAlignment(osgText::Text::SCREEN);
text6->setCharacterSizeMode(osgText::Text::OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT);
text6->setText("CharacterSizeMode OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT");
geode->addDrawable(text6);
osgText::Text* text7 = new osgText::Text;
text7->setUseVertexBufferObjects(useVBOs);
text7->setColor(characterSizeModeColor);
text7->setFont("fonts/times.ttf");
text7->setCharacterSize(characterSize);
text7->setPosition(center - osg::Vec3(0.0, 0.0, 0.6));
text7->setAxisAlignment(osgText::Text::SCREEN);
text7->setCharacterSizeMode(osgText::Text::OBJECT_COORDS);
text7->setText("CharacterSizeMode OBJECT_COORDS (default)");
geode->addDrawable(text7);
osg::ShapeDrawable* shape = new osg::ShapeDrawable(new osg::Sphere(center,characterSize*0.2f));
shape->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::ON);
geode->addDrawable(shape);
osg::Group* rootNode = new osg::Group;
rootNode->addChild(geode);
return rootNode;
}