6a67be2e32
forcing users to use osgDB::readRef*File() methods. The later is preferable as it closes a potential threading bug when using paging databases in conjunction
with the osgDB::Registry Object Cache. This threading bug occurs when one thread gets an object from the Cache via an osgDB::read*File() call where only
a pointer to the object is passed back, so taking a reference to the object is delayed till it gets reassigned to a ref_ptr<>, but at the same time another
thread calls a flush of the Object Cache deleting this object as it's referenceCount is now zero. Using osgDB::readREf*File() makes sure the a ref_ptr<> is
passed back and the referenceCount never goes to zero.
To ensure the OSG builds when OSG_PROVIDE_READFILE is to OFF the many cases of osgDB::read*File() usage had to be replaced with a ref_ptr<> osgDB::readRef*File()
usage. The avoid this change causing lots of other client code to be rewritten to handle the use of ref_ptr<> in place of C pointer I introduced a serious of
templte methods in various class to adapt ref_ptr<> to the underly C pointer to be passed to old OSG API's, example of this is found in include/osg/Group:
bool addChild(Node* child); // old method which can only be used with a Node*
tempalte<class T> bool addChild(const osg::ref_ptr<T>& child) { return addChild(child.get()); } // adapter template method
These changes together cover 149 modified files, so it's a large submission. This extent of changes are warrent to make use of the Object Cache
and multi-threaded loaded more robust.
git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/branches/OpenSceneGraph-3.4@15165 16af8721-9629-0410-8352-f15c8da7e697
674 lines
23 KiB
C++
674 lines
23 KiB
C++
/* OpenSceneGraph example, osgstereoimage.
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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 <osgViewer/Viewer>
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#include <osgDB/fstream>
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#include <osgDB/ReadFile>
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#include <osgDB/WriteFile>
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#include <osgUtil/Optimizer>
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#include <osg/ImageStream>
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#include <osg/Geode>
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#include <osg/Notify>
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#include <osg/MatrixTransform>
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#include <osg/Switch>
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#include <osg/TexMat>
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#include <osg/Texture2D>
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#include <iostream>
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typedef std::vector<std::string> FileList;
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#include <osg/Program>
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#include <osg/Shader>
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osg::StateSet* createColorToGreyscaleStateSet()
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{
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osg::StateSet* stateset = new osg::StateSet;
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osg::Program* program = new osg::Program;
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stateset->setAttribute(program);
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const char* fragSource =
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{
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"uniform sampler2D baseTexture;\n"
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"uniform mat4 colorMatrix;\n"
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"void main(void)\n"
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"{\n"
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" vec4 color = texture2D( baseTexture, gl_TexCoord[0].st );\n"
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" gl_FragColor = colorMatrix * color;\n"
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"}\n"
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};
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program->addShader(new osg::Shader(osg::Shader::FRAGMENT, fragSource));
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stateset->addUniform(new osg::Uniform("baseTexture",0));
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osg::Matrixf colorMatrix(
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0.3f, 0.3f, 0.3f, 0.0f,
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0.59f, 0.59f, 0.59f, 0.0f,
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0.11f, 0.11f, 0.11f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f
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);
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stateset->addUniform(new osg::Uniform("colorMatrix",colorMatrix));
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return stateset;
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}
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osg::Geode* createSectorForImage(osg::Image* image, osg::TexMat* texmat, float s,float t, float radius, float height, float length)
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{
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bool flip = image->getOrigin()==osg::Image::TOP_LEFT;
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int numSegments = 20;
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float Theta = length/radius;
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float dTheta = Theta/(float)(numSegments-1);
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float ThetaZero = height*s/(t*radius);
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// set up the texture.
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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_S,osg::Texture2D::CLAMP_TO_BORDER);
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texture->setWrap(osg::Texture2D::WRAP_T,osg::Texture2D::CLAMP_TO_BORDER);
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texture->setResizeNonPowerOfTwoHint(false);
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texture->setImage(image);
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// set up the drawstate.
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osg::StateSet* dstate = new osg::StateSet;
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dstate->setMode(GL_CULL_FACE,osg::StateAttribute::OFF);
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dstate->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
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dstate->setTextureAttributeAndModes(0, texture,osg::StateAttribute::ON);
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dstate->setTextureAttribute(0, texmat);
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// set up the geoset.
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osg::Geometry* geom = new osg::Geometry;
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geom->setStateSet(dstate);
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osg::Vec3Array* coords = new osg::Vec3Array();
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osg::Vec2Array* tcoords = new osg::Vec2Array();
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int i;
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float angle = -Theta/2.0f;
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for(i=0;
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i<numSegments;
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++i, angle+=dTheta)
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{
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coords->push_back(osg::Vec3(sinf(angle)*radius,cosf(angle)*radius,height*0.5f)); // top
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coords->push_back(osg::Vec3(sinf(angle)*radius,cosf(angle)*radius,-height*0.5f)); // bottom.
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tcoords->push_back(osg::Vec2(angle/ThetaZero+0.5f, flip ? 0.0f : 1.0f)); // top
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tcoords->push_back(osg::Vec2(angle/ThetaZero+0.5f, flip ? 1.0f : 0.0f)); // bottom.
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}
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osg::Vec4Array* colors = new osg::Vec4Array();
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colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
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osg::DrawArrays* elements = new osg::DrawArrays(osg::PrimitiveSet::QUAD_STRIP,0,coords->size());
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geom->setVertexArray(coords);
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geom->setTexCoordArray(0,tcoords);
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geom->setColorArray(colors, osg::Array::BIND_OVERALL);
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geom->addPrimitiveSet(elements);
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// set up the geode.
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osg::Geode* geode = new osg::Geode;
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geode->addDrawable(geom);
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return geode;
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}
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osg::Group * loadImages(std::string image1, std::string image2, osg::TexMat* texmatLeft, osg::TexMat* texmatRight, float radius, float height, float length)
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{
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osg::ref_ptr<osg::Image> imageLeft = osgDB::readRefImageFile(image1);
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osg::ref_ptr<osg::Image> imageRight = osgDB::readRefImageFile(image2);
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if (imageLeft.valid() && imageRight.valid())
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{
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osg::ImageStream* streamLeft = dynamic_cast<osg::ImageStream*>(imageLeft.get());
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if (streamLeft) streamLeft->play();
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osg::ImageStream* streamRight = dynamic_cast<osg::ImageStream*>(imageRight.get());
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if (streamRight) streamRight->play();
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float average_s = (imageLeft->s()+imageRight->s())*0.5f;
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float average_t = (imageLeft->t()+imageRight->t())*0.5f;
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osg::Geode* geodeLeft = createSectorForImage(imageLeft.get(),texmatLeft,average_s,average_t, radius, height, length);
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geodeLeft->setNodeMask(0x01);
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osg::Geode* geodeRight = createSectorForImage(imageRight.get(),texmatRight,average_s,average_t, radius, height, length);
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geodeRight->setNodeMask(0x02);
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osg::Group * imageGroup = new osg::Group;
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imageGroup->addChild(geodeLeft);
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imageGroup->addChild(geodeRight);
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return imageGroup;
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}
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else
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{
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std::cout << "Warning: Unable to load both image files, '"<<image1<<"' & '"<<image2<<"', required for stereo imaging."<<std::endl;
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return 0;
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}
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}
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// create a switch containing a set of child each containing a
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// stereo image pair.
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osg::Switch* createScene(FileList fileList, osg::TexMat* texmatLeft, osg::TexMat* texmatRight, float radius, float height, float length)
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{
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osg::Switch* sw = new osg::Switch;
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// load the images.
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for(unsigned int i=0;i+1<fileList.size();i+=2)
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{
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osg::Group * imageGroup = loadImages(fileList[i],fileList[i+1],texmatLeft,texmatRight, radius, height, length);
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if (imageGroup) sw->addChild(imageGroup);
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}
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if (sw->getNumChildren()>0)
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{
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// select first child.
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sw->setSingleChildOn(0);
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}
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return sw;
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}
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class SlideEventHandler : public osgGA::GUIEventHandler
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{
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public:
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SlideEventHandler();
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META_Object(osgStereImageApp,SlideEventHandler);
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void set(osg::Switch* sw, float offsetX, float offsetY, osg::TexMat* texmatLeft, osg::TexMat* texmatRight, float timePerSlide, bool autoSteppingActive);
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void set(FileList fileList, osg::Switch* sw, float offsetX, float offsetY, osg::TexMat* texmatLeft, osg::TexMat* texmatRight, float radius, float height, float length, float timePerSlide, bool autoSteppingActive);
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virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&);
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virtual void getUsage(osg::ApplicationUsage& usage) const;
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virtual void operator()(osg::Node* node, osg::NodeVisitor* nv);
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void nextSlide();
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void previousSlide();
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void scaleImage(float s);
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void offsetImage(float ds,float dt);
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void rotateImage(float rx,float ry);
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void initTexMatrices();
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protected:
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~SlideEventHandler() {}
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SlideEventHandler(const SlideEventHandler&,const osg::CopyOp&) {}
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osg::ref_ptr<osg::Switch> _switch;
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osg::ref_ptr<osg::TexMat> _texmatLeft;
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osg::ref_ptr<osg::TexMat> _texmatRight;
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float _radius;
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float _height;
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float _length;
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bool _firstTraversal;
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unsigned int _activeSlide;
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double _previousTime;
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double _timePerSlide;
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bool _autoSteppingActive;
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float _initSeperationX;
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float _currentSeperationX;
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float _initSeperationY;
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float _currentSeperationY;
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FileList _fileList;
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};
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SlideEventHandler::SlideEventHandler():
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_switch(0),
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_texmatLeft(0),
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_texmatRight(0),
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_firstTraversal(true),
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_activeSlide(0),
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_previousTime(-1.0f),
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_timePerSlide(5.0),
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_autoSteppingActive(false)
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{
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}
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void SlideEventHandler::set(osg::Switch* sw, float offsetX, float offsetY, osg::TexMat* texmatLeft, osg::TexMat* texmatRight, float timePerSlide, bool autoSteppingActive)
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{
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_switch = sw;
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_switch->setUpdateCallback(this);
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_texmatLeft = texmatLeft;
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_texmatRight = texmatRight;
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_timePerSlide = timePerSlide;
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_autoSteppingActive = autoSteppingActive;
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_initSeperationX = offsetX;
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_currentSeperationX = _initSeperationX;
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_initSeperationY = offsetY;
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_currentSeperationY = _initSeperationY;
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initTexMatrices();
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}
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void SlideEventHandler::set(FileList fileList, osg::Switch* sw, float offsetX, float offsetY, osg::TexMat* texmatLeft, osg::TexMat* texmatRight, float radius, float height, float length, float timePerSlide, bool autoSteppingActive)
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{
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_switch = sw;
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_switch->setUpdateCallback(this);
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_fileList=FileList(fileList);
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osg::ref_ptr<osg::Group> imageGroup = loadImages(fileList[0],fileList[1],texmatLeft,texmatRight, radius, height, length);
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if (imageGroup.get())_switch->addChild(imageGroup.get());
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_texmatLeft = texmatLeft;
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_texmatRight = texmatRight;
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_radius=radius;
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_height=height;
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_length=length;
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_timePerSlide = timePerSlide;
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_autoSteppingActive = autoSteppingActive;
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_initSeperationX = offsetX;
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_currentSeperationX = _initSeperationX;
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_initSeperationY = offsetY;
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_currentSeperationY = _initSeperationY;
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initTexMatrices();
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}
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bool SlideEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&)
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{
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switch(ea.getEventType())
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{
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case(osgGA::GUIEventAdapter::KEYDOWN):
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{
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if (ea.getKey()=='a')
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{
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_autoSteppingActive = !_autoSteppingActive;
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_previousTime = ea.getTime();
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return true;
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}
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else if ((ea.getKey()=='n') || (ea.getKey()==osgGA::GUIEventAdapter::KEY_Right))
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{
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nextSlide();
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return true;
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}
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else if ((ea.getKey()=='p') || (ea.getKey()==osgGA::GUIEventAdapter::KEY_Left))
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{
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previousSlide();
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return true;
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}
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else if ((ea.getKey()=='w') || (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Add))
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{
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scaleImage(0.99f);
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return true;
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}
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else if ((ea.getKey()=='s') || (ea.getKey()==osgGA::GUIEventAdapter::KEY_KP_Subtract))
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{
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scaleImage(1.01f);
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return true;
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}
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else if (ea.getKey()=='j')
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{
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offsetImage(-0.001f,0.0f);
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return true;
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}
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else if (ea.getKey()=='k')
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{
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offsetImage(0.001f,0.0f);
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return true;
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}
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else if (ea.getKey()=='i')
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{
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offsetImage(0.0f,-0.001f);
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return true;
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}
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else if (ea.getKey()=='m')
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{
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offsetImage(0.0f,0.001f);
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return true;
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}
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else if (ea.getKey()==' ')
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{
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initTexMatrices();
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return true;
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}
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return false;
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}
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case(osgGA::GUIEventAdapter::DRAG):
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case(osgGA::GUIEventAdapter::MOVE):
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{
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static float px = ea.getXnormalized();
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static float py = ea.getYnormalized();
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float dx = ea.getXnormalized()-px;
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float dy = ea.getYnormalized()-py;
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px = ea.getXnormalized();
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py = ea.getYnormalized();
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rotateImage(dx,dy);
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return true;
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}
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default:
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return false;
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}
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}
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void SlideEventHandler::getUsage(osg::ApplicationUsage& usage) const
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{
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usage.addKeyboardMouseBinding("Space","Reset the image position to center");
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usage.addKeyboardMouseBinding("a","Toggle on/off the automatic advancement for image to image");
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usage.addKeyboardMouseBinding("n","Advance to next image");
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usage.addKeyboardMouseBinding("p","Move to previous image");
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usage.addKeyboardMouseBinding("q","Zoom into the image");
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usage.addKeyboardMouseBinding("a","Zoom out of the image");
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usage.addKeyboardMouseBinding("j","Reduce horizontal offset");
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usage.addKeyboardMouseBinding("k","Increase horizontal offset");
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usage.addKeyboardMouseBinding("m","Reduce vertical offset");
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usage.addKeyboardMouseBinding("i","Increase vertical offset");
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}
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void SlideEventHandler::operator()(osg::Node* node, osg::NodeVisitor* nv)
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{
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if (_autoSteppingActive && nv->getFrameStamp())
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{
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double time = nv->getFrameStamp()->getSimulationTime();
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if (_firstTraversal)
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{
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_firstTraversal = false;
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_previousTime = time;
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}
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else if (time-_previousTime>_timePerSlide)
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{
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_previousTime = time;
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nextSlide();
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}
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}
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traverse(node,nv);
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}
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void SlideEventHandler::nextSlide()
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{
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if (_switch->getNumChildren()==0) return;
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++_activeSlide;
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if (_fileList.size()>0) {
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if (_activeSlide>= _fileList.size()/2 ) _activeSlide = 0;
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osg::ref_ptr<osg::Group> images = loadImages(_fileList[2*_activeSlide],_fileList[2*_activeSlide+1],_texmatLeft.get(),_texmatRight.get(),_radius,_height,_length);
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if (images.valid()) _switch->replaceChild(_switch->getChild(0),images.get());
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} else {
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if (_activeSlide>=_switch->getNumChildren()) _activeSlide = 0;
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_switch->setSingleChildOn(_activeSlide);
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}
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}
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void SlideEventHandler::previousSlide()
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{
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if (_switch->getNumChildren()==0) return;
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if (_fileList.size()>0) {
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if (_activeSlide==0) _activeSlide = _fileList.size()/2-1;
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else --_activeSlide;
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osg::ref_ptr<osg::Group> images = loadImages(_fileList[2*_activeSlide],_fileList[2*_activeSlide+1],_texmatLeft.get(),_texmatRight.get(),_radius,_height,_length);
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if (images.valid()) _switch->replaceChild(_switch->getChild(0),images.get());
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} else {
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if (_activeSlide==0) _activeSlide = _switch->getNumChildren()-1;
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else --_activeSlide;
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_switch->setSingleChildOn(_activeSlide);
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}
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}
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|
|
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void SlideEventHandler::scaleImage(float s)
|
|
{
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|
_texmatLeft->setMatrix(_texmatLeft->getMatrix()*osg::Matrix::translate(-0.5f,-0.5f,0.0f)*osg::Matrix::scale(s,s,1.0f)*osg::Matrix::translate(0.5f,0.5f,0.0f));
|
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_texmatRight->setMatrix(_texmatRight->getMatrix()*osg::Matrix::translate(-0.5f,-0.5f,0.0f)*osg::Matrix::scale(s,s,1.0f)*osg::Matrix::translate(0.5f,0.5f,0.0f));
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}
|
|
|
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void SlideEventHandler::offsetImage(float ds,float dt)
|
|
{
|
|
_currentSeperationX+=ds;
|
|
_currentSeperationY+=dt;
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|
osg::notify(osg::NOTICE)<<"image offset x = "<<_currentSeperationX<<" y ="<<_currentSeperationY<<std::endl;
|
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_texmatLeft->setMatrix(_texmatLeft->getMatrix()*osg::Matrix::translate(ds,dt,0.0f));
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_texmatRight->setMatrix(_texmatRight->getMatrix()*osg::Matrix::translate(-ds,-dt,0.0f));
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|
}
|
|
|
|
void SlideEventHandler::rotateImage(float rx,float ry)
|
|
{
|
|
const float scale = 0.5f;
|
|
_texmatLeft->setMatrix(_texmatLeft->getMatrix()*osg::Matrix::translate(-rx*scale,-ry*scale,0.0f));
|
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_texmatRight->setMatrix(_texmatRight->getMatrix()*osg::Matrix::translate(-rx*scale,-ry*scale,0.0f));
|
|
}
|
|
|
|
void SlideEventHandler::initTexMatrices()
|
|
{
|
|
_texmatLeft->setMatrix(osg::Matrix::translate(_initSeperationX,_initSeperationY,0.0f));
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_texmatRight->setMatrix(osg::Matrix::translate(-_initSeperationX,-_initSeperationY,0.0f));
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|
}
|
|
|
|
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
// use an ArgumentParser object to manage the program arguments.
|
|
osg::ArgumentParser arguments(&argc,argv);
|
|
|
|
// set up the usage document, in case we need to print out how to use this program.
|
|
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the example which demonstrates use node masks to create stereo images.");
|
|
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] image_file_left_eye image_file_right_eye");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-d <float>","Time delay in seconds between the display of successive image pairs when in auto advance mode.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-a","Enter auto advance of image pairs on start up.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-x <float>","Horizontal offset of left and right images.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-y <float>","Vertical offset of left and right images.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--disk","Keep images on disk");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-files <filename>","Load filenames from a file");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--SingleThreaded","Select SingleThreaded threading model for viewer.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--CullDrawThreadPerContext","Select CullDrawThreadPerContext threading model for viewer.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--DrawThreadPerContext","Select DrawThreadPerContext threading model for viewer.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--CullThreadPerCameraDrawThreadPerContext","Select CullThreadPerCameraDrawThreadPerContext threading model for viewer.");
|
|
|
|
|
|
// construct the viewer.
|
|
osgViewer::Viewer viewer(arguments);
|
|
|
|
// register the handler to add keyboard and mouse handling.
|
|
SlideEventHandler* seh = new SlideEventHandler();
|
|
viewer.addEventHandler(seh);
|
|
|
|
// read any time delay argument.
|
|
float timeDelayBetweenSlides = 5.0f;
|
|
while (arguments.read("-d",timeDelayBetweenSlides)) {}
|
|
|
|
bool autoSteppingActive = false;
|
|
while (arguments.read("-a")) autoSteppingActive = true;
|
|
|
|
float offsetX=0.0f;
|
|
while (arguments.read("-x",offsetX)) {}
|
|
|
|
float offsetY=0.0f;
|
|
while (arguments.read("-y",offsetY)) {}
|
|
|
|
bool onDisk=false;
|
|
while (arguments.read("--disk")) { onDisk=true;}
|
|
|
|
std::string filename="";
|
|
FileList fileList;
|
|
// extract the filenames from the a file, one filename per line.
|
|
while (arguments.read("-files",filename)) {
|
|
osgDB::ifstream is(filename.c_str());
|
|
if (is) {
|
|
std::string line;
|
|
while (std::getline(is,line,'\n')) fileList.push_back(line);
|
|
is.close();
|
|
}
|
|
|
|
}
|
|
|
|
// if user request help write it out to cout.
|
|
if (arguments.read("-h") || arguments.read("--help"))
|
|
{
|
|
arguments.getApplicationUsage()->write(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
osgViewer::Viewer::ThreadingModel threading = osgViewer::Viewer::SingleThreaded;
|
|
while (arguments.read("--SingleThreaded")) threading = osgViewer::Viewer::SingleThreaded;
|
|
while (arguments.read("--CullDrawThreadPerContext")) threading = osgViewer::Viewer::CullDrawThreadPerContext;
|
|
while (arguments.read("--DrawThreadPerContext")) threading = osgViewer::Viewer::DrawThreadPerContext;
|
|
while (arguments.read("--CullThreadPerCameraDrawThreadPerContext")) threading = osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext;
|
|
|
|
viewer.setThreadingModel(threading);
|
|
|
|
// any option left unread are converted into errors to write out later.
|
|
arguments.reportRemainingOptionsAsUnrecognized();
|
|
|
|
// report any errors if they have occurred when parsing the program arguments.
|
|
if (arguments.errors())
|
|
{
|
|
arguments.writeErrorMessages(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
// extract the filenames from the arguments list.
|
|
for(int pos=1;pos<arguments.argc();++pos)
|
|
{
|
|
if (arguments.isString(pos)) fileList.push_back(arguments[pos]);
|
|
}
|
|
|
|
if (fileList.empty())
|
|
{
|
|
fileList.push_back("Images/dog_left_eye.jpg");
|
|
fileList.push_back("Images/dog_right_eye.jpg");
|
|
}
|
|
else if (fileList.size()<2)
|
|
{
|
|
arguments.getApplicationUsage()->write(std::cout,osg::ApplicationUsage::COMMAND_LINE_OPTION);
|
|
return 1;
|
|
}
|
|
|
|
// now the windows have been realized we switch off the cursor to prevent it
|
|
// distracting the people seeing the stereo images.
|
|
double fovy, aspectRatio, zNear, zFar;
|
|
viewer.getCamera()->getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar);
|
|
|
|
float radius = 1.0f;
|
|
float height = 2*radius*tan(osg::DegreesToRadians(fovy)*0.5f);
|
|
float length = osg::PI*radius; // half a cylinder.
|
|
|
|
// use a texture matrix to control the placement of the image.
|
|
osg::TexMat* texmatLeft = new osg::TexMat;
|
|
osg::TexMat* texmatRight = new osg::TexMat;
|
|
|
|
// creat the scene from the file list.
|
|
osg::ref_ptr<osg::Switch> rootNode;
|
|
if (!onDisk) rootNode = createScene(fileList,texmatLeft,texmatRight,radius,height,length);
|
|
else rootNode=new osg::Switch();
|
|
|
|
//osgDB::writeNodeFile(*rootNode,"test.osgt");
|
|
|
|
|
|
|
|
viewer.getCamera()->setCullMask(0xffffffff);
|
|
viewer.getCamera()->setCullMaskLeft(0x00000001);
|
|
viewer.getCamera()->setCullMaskRight(0x00000002);
|
|
|
|
// set up the use of stereo by default.
|
|
osg::DisplaySettings::instance()->setStereo(true);
|
|
|
|
if (osg::DisplaySettings::instance()->getStereoMode()==osg::DisplaySettings::ANAGLYPHIC)
|
|
{
|
|
rootNode->setStateSet(createColorToGreyscaleStateSet());
|
|
}
|
|
|
|
|
|
// set the scene to render
|
|
viewer.setSceneData(rootNode.get());
|
|
|
|
|
|
// create the windows and run the threads.
|
|
viewer.realize();
|
|
|
|
|
|
// switch off the cursor
|
|
osgViewer::Viewer::Windows windows;
|
|
viewer.getWindows(windows);
|
|
for(osgViewer::Viewer::Windows::iterator itr = windows.begin();
|
|
itr != windows.end();
|
|
++itr)
|
|
{
|
|
(*itr)->useCursor(false);
|
|
}
|
|
|
|
viewer.setFusionDistance(osgUtil::SceneView::USE_FUSION_DISTANCE_VALUE,radius);
|
|
|
|
// set up the SlideEventHandler.
|
|
if (onDisk) seh->set(fileList,rootNode.get(),offsetX,offsetY,texmatLeft,texmatRight,radius,height,length,timeDelayBetweenSlides,autoSteppingActive);
|
|
else seh->set(rootNode.get(),offsetX,offsetY,texmatLeft,texmatRight,timeDelayBetweenSlides,autoSteppingActive);
|
|
|
|
osg::Matrix homePosition;
|
|
homePosition.makeLookAt(osg::Vec3(0.0f,0.0f,0.0f),osg::Vec3(0.0f,1.0f,0.0f),osg::Vec3(0.0f,0.0f,1.0f));
|
|
|
|
while( !viewer.done() )
|
|
{
|
|
viewer.getCamera()->setViewMatrix(homePosition);
|
|
|
|
// fire off the cull and draw traversals of the scene.
|
|
viewer.frame();
|
|
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|