[osg-users] animated moving of a MatrixTransform

[Andrew Kanter]

Hi,

i want to move a MatrixTransform (mt) with animation.
I dont want to generate an new pat or something like this under the mt.
When i directly animate the mt with

Code:

osg::Vec3d startAnimationVec = mt-getBound().center();
osg::Vec3d endAnimationVec = startAnimationVec + osg::Vec3f(0.0f,2.0f,5.0f);
osg::ref_ptrosg::AnimationPath animationPath = new osg::AnimationPath();

animationPath-setLoopMode(osg::AnimationPath::NO_LOOPING);
animationPath-insert(0, startAnimationVec);
animationPath-insert(1, endAnimationVec);

osg::ref_ptrosg::AnimationPathCallback animationPathCB = new 
osg::AnimationPathCallback(animationPath.get(), 0.0, 2.0);
animationPathCB-setAnimationPath(animationPath.get());
mt-setUpdateCallback(animationPathCB.get());




the movement is correct but the the other values in the mt are erased.
So before the animation the Matrixd of the mt look like 

Code:
(a,b,c,x,
d,e,f,y,
g,h,i,z)


and afterwards 

Code:
(1,0,0,x,
0,1,0,y,
0,0,1,z)



How can i animate without losing the matrix?
Thank you!

Cheers,
Andrew

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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=35507#35507





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[osg-users] Disappearing Text

[Andrew Kanter]

Hi,

with 


Code:

osg::ref_ptrosgText::Text label = new osgText::Text();
osg::ref_ptrosg::Geode labelGeode = new osg::Geode();
labelGeode-setName(TEXT_TOP);
labelGeode-addDrawable(label.get());
label-setCharacterSize(1.3);
label-setFont(arial.ttf);
label-setText(fileName);
label-setAxisAlignment(osgText::Text::XY_PLANE);
label-setDrawMode(osgText::Text::TEXT);
label-setAlignment(osgText::Text::CENTER_TOP);
label-setPosition( osg::Vec3(0.0f, 0.5f,6.05f) );
label-setColor(_textColorTop);
shapeGroup-addChild(labelGeode.get());




i write text on a geode. But when the geode is ovelayed with a transparent 
geode the text disappears.


Code:

osg::ref_ptrosg::Material shapeMaterial = new osg::Material;  
//rote Einfärbung

shapeMaterial-setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4(1.0f, 0.0f, 
0.0f, 1.0f)); 

shapeMaterial-setTransparency(osg::Material::FRONT_AND_BACK, 0.8f);
osg::ref_ptrosg::StateSet stateSet = new 
osg::StateSet();
stateSet-setMode(GL_BLEND, 
osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON );
stateSet-setAttribute(shapeMaterial.get(), 
osg::StateAttribute::OVERRIDE);

stateSet-setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
shapeGeodeRZ-setStateSet(stateSet.get());




How can i stop the text from disappearing?

Thank you!

Cheers,
Andrew

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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=35545#35545





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