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Added Image::g/setOrigin to help movie plugins tell applications that the imagery

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is not the usual OpenGL BOTTOM_LEFT orientation, but with the origin TOP_LEFT.  This
allows geometry setup code to flip the t tex coord to render the movie the correct way up.
This commit is contained in:
Robert Osfield
2007-06-12 16:55:44 +00:00
parent 26eb5672b9
commit a7a0e2c4d3
5 changed files with 31 additions and 3 deletions
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5
examples/osgmovie/osgmovie.cpp
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@@ -268,12 +268,13 @@ void MovieEventHandler::getUsage(osg::ApplicationUsage& usage) const
osg::Geometry* myCreateTexturedQuadGeometry(const osg::Vec3& pos,float width,float height, osg::Image* image, bool useTextureRectangle)
{
bool flip = image->getOrigin()==osg::Image::TOP_LEFT;
if (useTextureRectangle)
{
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(pos,
osg::Vec3(width,0.0f,0.0f),
osg::Vec3(0.0f,0.0f,height),
0.0f,image->t(), image->s(),0.0f);
0.0f, flip ? image->t() : 0.0, image->s(), flip ? 0.0 : image->t());
osg::TextureRectangle* texture = new osg::TextureRectangle(image);
texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
@@ -291,7 +292,7 @@ osg::Geometry* myCreateTexturedQuadGeometry(const osg::Vec3& pos,float width,flo
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(pos,
osg::Vec3(width,0.0f,0.0f),
osg::Vec3(0.0f,0.0f,height),
0.0f,1.0f, 1.0f,0.0f);
0.0f, flip ? 1.0f : 0.0f , 1.0f, flip ? 0.0f : 1.0f);
osg::Texture2D* texture = new osg::Texture2D(image);
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);