Hi David,
The osg::ShapeDrawable classes is only simply convenience classes, it
isn't able to map all the possible combinations of the way you might
want to apply. For fine control you have to use osg::Geometry to
build up the coordinates and texture coordinates yourself. See the
osggeometry example.
Robert.
On Fri, Feb 19, 2010 at 10:42 PM, David Cofer <dco...@mindcreators.com> wrote:
> Hi,
>
> I am new to OSG and I am attempting to port some work that was done in
> directX over to OSG. I am using some of the basic geometric objects like
> osg::box and osg::sphere. I got those working like I wanted, but when I tried
> to add texture mapping to them the results are very different than what I got
> in DirectX. For example, by default in directX when I mapped a texture to a
> box then each face got a full copy of the texture. However, when I map the
> same texture to the box in osg I get some weird stretched lines over the
> faces.
>
> Do the standard geometric objects not have texture coordinates already
> defined, or am I doing something simple wrong? I have listed a code snippet
> below. I have also tried using all of the different texture modes, and none
> of them really worked.
> Do I have to set the texture coords up manually? Seems to defeat the purpose
> of having simple objects predefined if I have to do a bunch of manual texture
> corrdinate code for each one.
>
> I have attached an image example showing the difference between the directx
> and osg versions.
>
>
> Code:
>
> osg::ref_ptr<osg::MatrixTransform> gNode = new
> osg::MatrixTransform(osg::Matrix::translate(osg::Vec3(0, 0,0)));
> osg::ref_ptr<osg::ShapeDrawable> boxDrawable = new
> osg::ShapeDrawable(new osg::Box(osg::Vec3(0,0,0), 10, 10, 10));
> osg::ref_ptr<osg::Geode> box = new osg::Geode;
> box->addDrawable(boxDrawable.get());
> gNode->addChild(box.get());
> root->addChild(gNode.get());
> osg::ref_ptr<osg::Image> image = osgDB::readImageFile("gravel.bmp");
> osg::StateSet* state = box->getOrCreateStateSet();
> state->setTextureAttributeAndModes(0, new osg::Texture2D(image.get()));
>
>
>
>
> Thank you!
>
> Cheers,
> David
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=24516#24516
>
>
>
>
> Attachments:
> http://forum.openscenegraph.org//files/textureexamples_200.jpg
>
>
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>
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