Hi,
Currently making my billboard node, I add an osgText on it. I need this text
to be in node's coordinate, but in constant pixel size on screen.
When the billboard move or rotate, the text will follow it. The only thing
the text can change is caracter size.
I use this code :
*
osg::ref_ptr<osgText::Text> d = new osgText::Text;
d->setRotation(osg::Quat(-osg::PI_2, osg::Vec3f(1,0,0)) *
osg::Quat(-osg::PI_2, osg::Vec3f(0,1,0)));
d->setPosition(decal*0.7);//to avoid collision between object and
osgText
d->setText("Test");
d->setAxisAlignment(osgText::Text::USER_DEFINED_ROTATION);
d->setAutoRotateToScreen(false);
d->setCharacterSizeMode(osgText::Text::SCREEN_COORDS);
d->setCharacterSize(30);
d->setAlignment(osgText::Text::CENTER_TOP);
// d->setDrawMode(1);
billboard->addDrawable(d.get());*
But the setRotation is making something bad.
Without the setRotation line node, everything is good for text size.
Rotation is bad but it is something expected.
So I apply a rotation on it, to obtain the text with the good orientation
relative to the billboard. After that, the text rotation is good, but when
the camera is aproaching, the text size do not update correctly : only the
width stay constant in pixel size... the hight stay constant in billboard
coordinates size. So the text is deformed, depending on camera distance from
it..
The question is : how to rotate the text without having this bad effect ?
Thanks.
Regards,
Vincent.
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