108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
/* OpenSceneGraph example, osgtexture3D.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <osg/Node>
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#include <osg/Geometry>
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#include <osg/Notify>
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#include <osg/Texture2D>
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#include <osg/ImageSequence>
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#include <osg/Geode>
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#include <osgDB/Registry>
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#include <osgDB/ReadFile>
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#include <osgViewer/Viewer>
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#include <iostream>
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//
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// A simple demo demonstrating different texturing modes,
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// including using of texture extensions.
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//
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struct ImageUpdateCallback : public osg::StateAttribute::Callback
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{
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/** do customized update code.*/
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virtual void operator () (osg::StateAttribute* attr, osg::NodeVisitor* nv)
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{
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const osg::FrameStamp* fs = nv!=0 ? nv->getFrameStamp() : 0;
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osg::Texture2D* texture2D = dynamic_cast<osg::Texture2D*>(attr);
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if (texture2D && texture2D->getImage() && fs)
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{
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texture2D->getImage()->update(fs);
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}
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}
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};
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osg::StateSet* createState()
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{
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// read 4 2d images
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osg::ref_ptr<osg::Image> image_0 = osgDB::readImageFile("Images/lz.rgb");
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osg::ref_ptr<osg::Image> image_1 = osgDB::readImageFile("Images/reflect.rgb");
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osg::ref_ptr<osg::Image> image_2 = osgDB::readImageFile("Images/tank.rgb");
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osg::ref_ptr<osg::Image> image_3 = osgDB::readImageFile("Images/skymap.jpg");
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osg::ref_ptr<osg::ImageSequence> imageSequence = new osg::ImageSequence;
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imageSequence->addImage(image_0.get(), 0.25);
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imageSequence->addImage(image_1.get(), 0.25);
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imageSequence->addImage(image_2.get(), 0.25);
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imageSequence->addImage(image_3.get(), 0.25);
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osg::Texture2D* texture = new osg::Texture2D;
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texture->setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
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texture->setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
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texture->setWrap(osg::Texture2D::WRAP_R,osg::Texture2D::REPEAT);
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texture->setResizeNonPowerOfTwoHint(false);
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texture->setImage(imageSequence.get());
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//texture->setTextureSize(512,512);
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texture->setUpdateCallback(new ImageUpdateCallback);
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// create the StateSet to store the texture data
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osg::StateSet* stateset = new osg::StateSet;
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stateset->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
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return stateset;
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}
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osg::Node* createModel()
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{
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// create the geometry of the model, just a simple 2d quad right now.
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osg::Geode* geode = new osg::Geode;
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geode->addDrawable(osg::createTexturedQuadGeometry(osg::Vec3(0.0f,0.0f,0.0), osg::Vec3(1.0f,0.0f,0.0), osg::Vec3(0.0f,0.0f,1.0f)));
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geode->setStateSet(createState());
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return geode;
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}
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int main(int , char **)
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{
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// construct the viewer.
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osgViewer::Viewer viewer;
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// create a model from the images and pass it to the viewer.
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viewer.setSceneData(createModel());
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return viewer.run();
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}
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