Hi,
Thx Robert!
I use one of osgEarth fuction to rendering my text.
Code:
osg::ref_ptr<osgText::Text> PowerPlaceNode::createPlaceNodeTextDrawable(const
std::string& text,
const TextSymbol* symbol, const osg::Vec3& positionOffset)
{
osg::ref_ptr < osgText::Text > t = new osgText::Text();
osgText::String::Encoding text_encoding =
osgText::String::ENCODING_UNDEFINED;
if (symbol && symbol->encoding().isSet())
{
switch (symbol->encoding().value())
{
case TextSymbol::ENCODING_ASCII:
text_encoding = osgText::String::ENCODING_ASCII;
break;
case TextSymbol::ENCODING_UTF8:
text_encoding = osgText::String::ENCODING_UTF8;
break;
case TextSymbol::ENCODING_UTF16:
text_encoding = osgText::String::ENCODING_UTF16;
break;
case TextSymbol::ENCODING_UTF32:
text_encoding = osgText::String::ENCODING_UTF32;
break;
default:
text_encoding = osgText::String::ENCODING_UTF8;
break; //editby lvqing 20140509
}
}
t->setText(text, osgText::String::ENCODING_UTF8);
if (symbol && symbol->pixelOffset().isSet())
{
t->setPosition(
osg::Vec3(positionOffset.x() +
symbol->pixelOffset()->x(),
positionOffset.y() +
symbol->pixelOffset()->y(), positionOffset.z()));
}
else
{
t->setPosition(positionOffset);
}
osgText::Font* font = 0L;
if (symbol && symbol->font().isSet())
{
font = osgText::readFontFile(*symbol->font()); // read font*/
}
t->setFontResolution(256,256);
t->setAutoRotateToScreen(false);
t->setCharacterSizeMode(osgText::Text::OBJECT_COORDS);
if (symbol != NULL)
{
if (symbol->size() != NULL)
{
t->setCharacterSize( symbol && symbol->size().isSet() ?
*symbol->size() : 20.0f );
}
else
{
t->setCharacterSize( 20.0f );
}
}
if (!font)
font = Registry::instance()->getDefaultFont();
if (font)
{
t->setFont(font);
}
t->setColor(symbol && symbol->fill().isSet() ? symbol->fill()->color()
: Color::White);
if (symbol)
{
// they're the same enum.
osgText::Text::AlignmentType at =
(osgText::Text::AlignmentType) symbol->alignment().value();
t->setAlignment(at);
}
if (symbol && symbol->halo().isSet())
{
t->setBackdropColor(symbol->halo()->color());
t->setBackdropType(osgText::Text::OUTLINE);
if (symbol->haloOffset() != NULL)
{
if (symbol->haloOffset().isSet())
{
t->setBackdropOffset(*symbol->haloOffset(),
*symbol->haloOffset());
}
}
}
else if (!symbol)
{
// if no symbol at all is provided, default to using a black
halo.
t->setBackdropColor(osg::Vec4(.3, .3, .3, 1));
t->setBackdropType(osgText::Text::OUTLINE);
}
// this disables the default rendering bin set by osgText::Font.
Necessary if we're
// going to do decluttering.
// TODO: verify that it's still OK to share the font stateset (think
so) or does it
// need to be marked DYNAMIC
if (t->getStateSet())
t->getStateSet()->setRenderBinToInherit();
//osg::StateSet* stateSet = new osg::StateSet();
//t->setStateSet( stateSet );
//#if 0 // OBE: the decluttering bin is now set higher up (in OrthoNode)
osg::StateSet* stateSet = t->getOrCreateStateSet();
if ( symbol && symbol->declutter().isSet() )
{
Decluttering::setEnabled( stateSet, *symbol->declutter() );
}
else
{
// stateSet->setRenderBinToInherit();
stateSet->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
}
t->setStateSet( stateSet );
#if 0 // OBE: shadergenerator now takes care of all this
// add the static "isText=true" uniform; this is a hint for the
annotation shaders
// if they get installed.
static osg::ref_ptr<osg::Uniform> s_isTextUniform = new
osg::Uniform(osg::Uniform::BOOL, UNIFORM_IS_TEXT());
s_isTextUniform->set( true );
stateSet->addUniform( s_isTextUniform.get() );
#endif
return t;
}
...
Thank you!
Cheers,
Lv
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=70488#70488
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