dd996a3289
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/trunk@15164 16af8721-9629-0410-8352-f15c8da7e697
797 lines
29 KiB
C++
797 lines
29 KiB
C++
/* OpenSceneGraph example, osgdistortion.
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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/GLExtensions>
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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/MatrixTransform>
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#include <osg/Texture2D>
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#include <osg/Stencil>
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#include <osg/ColorMask>
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#include <osg/Depth>
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#include <osg/Billboard>
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#include <osg/Material>
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#include <osg/Projection>
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#include <osg/TextureCubeMap>
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#include <osg/io_utils>
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#include <osgGA/TrackballManipulator>
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#include <osgGA/FlightManipulator>
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#include <osgGA/DriveManipulator>
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#include <osgGA/KeySwitchMatrixManipulator>
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#include <osgGA/StateSetManipulator>
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#include <osgGA/AnimationPathManipulator>
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#include <osgGA/TerrainManipulator>
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#include <osgUtil/SmoothingVisitor>
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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 <osgViewer/ViewerEventHandlers>
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#include <iostream>
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using namespace osg;
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struct CommandLineOptions
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{
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unsigned int width;
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unsigned int height;
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unsigned int tex_width;
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unsigned int tex_height;
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double sphere_radius;
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double collar_radius;
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double distance;
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CommandLineOptions():
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width(1024),
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height(1024),
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tex_width(1024),
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tex_height(1024),
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sphere_radius(1.0),
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collar_radius(0.45),
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distance(1.0)
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{
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osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
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if (!wsi)
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{
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osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
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return;
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}
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unsigned int width, height;
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wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
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distance = sqrt(sphere_radius*sphere_radius - collar_radius*collar_radius);
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}
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void read(osg::ArgumentParser& arguments)
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{
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while (arguments.read("--width",width)) {}
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while (arguments.read("--height",height)) {}
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while (arguments.read("--texture-width",tex_width) || arguments.read("--tx",tex_width) ) {}
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while (arguments.read("--texture-height",tex_height) || arguments.read("--ty",tex_height) ) {}
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while (arguments.read("--radius", sphere_radius)) {}
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while (arguments.read("--collar", collar_radius)) {}
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distance = sqrt(sphere_radius*sphere_radius - collar_radius*collar_radius);
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while (arguments.read("--distance", distance)) {}
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}
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};
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class WindowResizedHandler : public osgGA::GUIEventHandler
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{
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public:
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WindowResizedHandler()
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{
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}
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virtual bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa, osg::Object* object, osg::NodeVisitor* nv)
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{
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osg::Camera* camera = dynamic_cast<osg::Camera*>(object);
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if (!camera) return false;
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const osg::FrameStamp* fs = nv->getFrameStamp();
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if (ea.getEventType()==osgGA::GUIEventAdapter::RESIZE)
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{
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OSG_NOTICE<<"Window resized event context="<<ea.getGraphicsContext()<<" frameNumber = "<<fs->getFrameNumber()<<std::endl;
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OSG_NOTICE<<" WindowX="<<ea.getWindowX()<<std::endl;
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OSG_NOTICE<<" WindowY="<<ea.getWindowY()<<std::endl;
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OSG_NOTICE<<" WindowWidth="<<ea.getWindowWidth()<<std::endl;
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OSG_NOTICE<<" WindowHeight="<<ea.getWindowHeight()<<std::endl;
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// reset the Camera viewport and associated Texture's to make sure it tracks the new window size.
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camera->resize(ea.getWindowWidth(), ea.getWindowHeight());
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}
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return false;
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}
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};
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osg::Node* createDistortionSubgraph(CommandLineOptions& options, osg::Node* subgraph, const osg::Vec4& clearColour)
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{
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osg::Group* distortionNode = new osg::Group;
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osg::Texture2D* texture = new osg::Texture2D;
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texture->setTextureSize(options.tex_width, options.tex_height);
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texture->setInternalFormat(GL_RGBA);
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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_EDGE);
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texture->setWrap(osg::Texture2D::WRAP_T, osg::Texture2D::CLAMP_TO_EDGE);
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// set up the render to texture camera.
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{
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osg::Camera* camera = new osg::Camera;
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// set clear the color and depth buffer
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camera->setClearColor(clearColour);
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camera->setClearMask(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
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// just inherit the main cameras view
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camera->setReferenceFrame(osg::Transform::RELATIVE_RF);
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camera->setProjectionMatrix(osg::Matrixd::identity());
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camera->setViewMatrix(osg::Matrixd::identity());
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// set viewport
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camera->setViewport(0,0,options.tex_width,options.tex_height);
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// set the camera to render before the main camera.
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camera->setRenderOrder(osg::Camera::PRE_RENDER);
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// tell the camera to use OpenGL frame buffer object where supported.
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camera->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT);
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// attach the texture and use it as the color buffer.
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camera->attach(osg::Camera::COLOR_BUFFER, texture);
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// add subgraph to render
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camera->addChild(subgraph);
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distortionNode->addChild(camera);
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camera->addEventCallback(new WindowResizedHandler());
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}
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// set up the hud camera
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{
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// create the quad to visualize.
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osg::Geometry* polyGeom = new osg::Geometry();
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polyGeom->setSupportsDisplayList(false);
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osg::Vec3 origin(0.0f,0.0f,0.0f);
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osg::Vec3 xAxis(1.0f,0.0f,0.0f);
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osg::Vec3 yAxis(0.0f,1.0f,0.0f);
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float height = 1024.0f;
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float width = 1280.0f;
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int noSteps = 50;
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osg::Vec3Array* vertices = new osg::Vec3Array;
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osg::Vec2Array* texcoords = new osg::Vec2Array;
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osg::Vec4Array* colors = new osg::Vec4Array;
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osg::Vec3 bottom = origin;
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osg::Vec3 dx = xAxis*(width/((float)(noSteps-1)));
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osg::Vec3 dy = yAxis*(height/((float)(noSteps-1)));
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osg::Vec2 bottom_texcoord(0.0f,0.0f);
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osg::Vec2 dx_texcoord(1.0f/(float)(noSteps-1),0.0f);
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osg::Vec2 dy_texcoord(0.0f,1.0f/(float)(noSteps-1));
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int i,j;
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for(i=0;i<noSteps;++i)
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{
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osg::Vec3 cursor = bottom+dy*(float)i;
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osg::Vec2 texcoord = bottom_texcoord+dy_texcoord*(float)i;
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for(j=0;j<noSteps;++j)
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{
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vertices->push_back(cursor);
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texcoords->push_back(osg::Vec2((sin(texcoord.x()*osg::PI-osg::PI*0.5)+1.0f)*0.5f,(sin(texcoord.y()*osg::PI-osg::PI*0.5)+1.0f)*0.5f));
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colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
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cursor += dx;
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texcoord += dx_texcoord;
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}
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}
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// pass the created vertex array to the points geometry object.
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polyGeom->setVertexArray(vertices);
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polyGeom->setColorArray(colors, osg::Array::BIND_PER_VERTEX);
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polyGeom->setTexCoordArray(0,texcoords);
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for(i=0;i<noSteps-1;++i)
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{
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osg::DrawElementsUShort* elements = new osg::DrawElementsUShort(osg::PrimitiveSet::QUAD_STRIP);
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for(j=0;j<noSteps;++j)
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{
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elements->push_back(j+(i+1)*noSteps);
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elements->push_back(j+(i)*noSteps);
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}
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polyGeom->addPrimitiveSet(elements);
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}
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// new we need to add the texture to the Drawable, we do so by creating a
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// StateSet to contain the Texture StateAttribute.
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osg::StateSet* stateset = polyGeom->getOrCreateStateSet();
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stateset->setTextureAttributeAndModes(0, texture,osg::StateAttribute::ON);
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stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
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osg::Geode* geode = new osg::Geode();
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geode->addDrawable(polyGeom);
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// set up the camera to render the textured quad
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osg::Camera* camera = new osg::Camera;
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// just inherit the main cameras view
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camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
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camera->setViewMatrix(osg::Matrix::identity());
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camera->setProjectionMatrixAsOrtho2D(0,1280,0,1024);
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// set the camera to render before the main camera.
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camera->setRenderOrder(osg::Camera::NESTED_RENDER);
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// add subgraph to render
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camera->addChild(geode);
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distortionNode->addChild(camera);
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}
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return distortionNode;
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}
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void setDomeFaces(osgViewer::Viewer& viewer, CommandLineOptions& options)
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{
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osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
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traits->x = 0;
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traits->y = 0;
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traits->width = options.width;
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traits->height = options.height;
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traits->windowDecoration = true;
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traits->doubleBuffer = true;
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traits->sharedContext = 0;
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osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
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if (!gc)
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{
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osg::notify(osg::NOTICE)<<"GraphicsWindow has not been created successfully."<<std::endl;
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return;
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}
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int center_x = options.width/2;
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int center_y = options.height/2;
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int camera_width = 256;
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int camera_height = 256;
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// front face
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{
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y, camera_width, camera_height));
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd());
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}
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// top face
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{
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y+camera_height, camera_width, camera_height));
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-90.0f), 1.0,0.0,0.0));
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}
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// left face
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{
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(center_x-camera_width*3/2, center_y, camera_width, camera_height));
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-90.0f), 0.0,1.0,0.0));
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}
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// right face
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{
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(center_x+camera_width/2, center_y, camera_width, camera_height));
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(90.0f), 0.0,1.0,0.0));
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}
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// bottom face
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{
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y-camera_height, camera_width, camera_height));
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(90.0f), 1.0,0.0,0.0));
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}
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// back face
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{
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y-2*camera_height, camera_width, camera_height));
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-180.0f), 1.0,0.0,0.0));
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}
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viewer.getCamera()->setProjectionMatrixAsPerspective(90.0f, 1.0, 1, 1000.0);
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viewer.assignSceneDataToCameras();
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}
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osg::Geometry* createDomeDistortionMesh(const osg::Vec3& origin, const osg::Vec3& widthVector, const osg::Vec3& heightVector,
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CommandLineOptions& options)
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{
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osg::Vec3d center(0.0,0.0,0.0);
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osg::Vec3d eye(0.0,0.0,0.0);
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bool centerProjection = false;
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osg::Vec3d projector = eye - osg::Vec3d(0.0,0.0, options.distance);
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osg::notify(osg::NOTICE)<<"Projector position = "<<projector<<std::endl;
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osg::notify(osg::NOTICE)<<"distance = "<<options.distance<<std::endl;
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// create the quad to visualize.
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osg::Geometry* geometry = new osg::Geometry();
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geometry->setSupportsDisplayList(false);
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osg::Vec3 xAxis(widthVector);
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float width = widthVector.length();
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xAxis /= width;
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osg::Vec3 yAxis(heightVector);
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float height = heightVector.length();
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yAxis /= height;
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int noSteps = 50;
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osg::Vec3Array* vertices = new osg::Vec3Array;
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osg::Vec3Array* texcoords = new osg::Vec3Array;
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osg::Vec4Array* colors = new osg::Vec4Array;
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osg::Vec3 bottom = origin;
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osg::Vec3 dx = xAxis*(width/((float)(noSteps-1)));
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osg::Vec3 dy = yAxis*(height/((float)(noSteps-1)));
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osg::Vec3d screenCenter = origin + widthVector*0.5f + heightVector*0.5f;
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float screenRadius = heightVector.length() * 0.5f;
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int i,j;
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if (centerProjection)
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{
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for(i=0;i<noSteps;++i)
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{
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osg::Vec3 cursor = bottom+dy*(float)i;
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for(j=0;j<noSteps;++j)
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{
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osg::Vec2 delta(cursor.x() - screenCenter.x(), cursor.y() - screenCenter.y());
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double theta = atan2(-delta.y(), delta.x());
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double phi = osg::PI_2 * delta.length() / screenRadius;
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if (phi > osg::PI_2) phi = osg::PI_2;
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phi *= 2.0;
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// osg::notify(osg::NOTICE)<<"theta = "<<theta<< "phi="<<phi<<std::endl;
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osg::Vec3 texcoord(sin(phi) * cos(theta),
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sin(phi) * sin(theta),
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cos(phi));
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vertices->push_back(cursor);
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colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
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texcoords->push_back(texcoord);
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cursor += dx;
|
|
}
|
|
// osg::notify(osg::NOTICE)<<std::endl;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for(i=0;i<noSteps;++i)
|
|
{
|
|
osg::Vec3 cursor = bottom+dy*(float)i;
|
|
for(j=0;j<noSteps;++j)
|
|
{
|
|
osg::Vec2 delta(cursor.x() - screenCenter.x(), cursor.y() - screenCenter.y());
|
|
double theta = atan2(-delta.y(), delta.x());
|
|
double phi = osg::PI_2 * delta.length() / screenRadius;
|
|
if (phi > osg::PI_2) phi = osg::PI_2;
|
|
|
|
// osg::notify(osg::NOTICE)<<"theta = "<<theta<< "phi="<<phi<<std::endl;
|
|
|
|
double f = options.distance * sin(phi);
|
|
double e = options.distance * cos(phi) + sqrt( options.sphere_radius*options.sphere_radius - f*f);
|
|
double l = e * cos(phi);
|
|
double h = e * sin(phi);
|
|
double z = l - options.distance;
|
|
|
|
osg::Vec3 texcoord(h * cos(theta) / options.sphere_radius,
|
|
h * sin(theta) / options.sphere_radius,
|
|
z / options.sphere_radius);
|
|
|
|
vertices->push_back(cursor);
|
|
colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
|
|
texcoords->push_back(texcoord);
|
|
|
|
cursor += dx;
|
|
}
|
|
// osg::notify(osg::NOTICE)<<std::endl;
|
|
}
|
|
}
|
|
|
|
// pass the created vertex array to the points geometry object.
|
|
geometry->setVertexArray(vertices);
|
|
|
|
geometry->setColorArray(colors, osg::Array::BIND_PER_VERTEX);
|
|
|
|
geometry->setTexCoordArray(0,texcoords);
|
|
|
|
for(i=0;i<noSteps-1;++i)
|
|
{
|
|
osg::DrawElementsUShort* elements = new osg::DrawElementsUShort(osg::PrimitiveSet::QUAD_STRIP);
|
|
for(j=0;j<noSteps;++j)
|
|
{
|
|
elements->push_back(j+(i+1)*noSteps);
|
|
elements->push_back(j+(i)*noSteps);
|
|
}
|
|
geometry->addPrimitiveSet(elements);
|
|
}
|
|
|
|
return geometry;
|
|
}
|
|
|
|
void setDomeCorrection(osgViewer::Viewer& viewer, CommandLineOptions& options)
|
|
{
|
|
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
|
|
traits->x = 0;
|
|
traits->y = 0;
|
|
traits->width = options.width;
|
|
traits->height = options.height;
|
|
traits->windowDecoration = false;
|
|
traits->doubleBuffer = true;
|
|
traits->sharedContext = 0;
|
|
|
|
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
|
|
if (!gc)
|
|
{
|
|
osg::notify(osg::NOTICE)<<"GraphicsWindow has not been created successfully."<<std::endl;
|
|
return;
|
|
}
|
|
|
|
int camera_width = options.tex_width;
|
|
int camera_height = options.tex_height;
|
|
|
|
osg::TextureCubeMap* texture = new osg::TextureCubeMap;
|
|
|
|
texture->setTextureSize(options.tex_width, options.tex_height);
|
|
texture->setInternalFormat(GL_RGB);
|
|
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
|
|
texture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR);
|
|
texture->setWrap(osg::Texture::WRAP_S,osg::Texture::CLAMP_TO_EDGE);
|
|
texture->setWrap(osg::Texture::WRAP_T,osg::Texture::CLAMP_TO_EDGE);
|
|
texture->setWrap(osg::Texture::WRAP_R,osg::Texture::CLAMP_TO_EDGE);
|
|
|
|
#if 0
|
|
osg::Camera::RenderTargetImplementation renderTargetImplementation = osg::Camera::SEPERATE_WINDOW;
|
|
GLenum buffer = GL_FRONT;
|
|
#else
|
|
osg::Camera::RenderTargetImplementation renderTargetImplementation = osg::Camera::FRAME_BUFFER_OBJECT;
|
|
GLenum buffer = GL_FRONT;
|
|
#endif
|
|
|
|
// front face
|
|
{
|
|
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
|
|
camera->setName("Front face camera");
|
|
camera->setGraphicsContext(gc.get());
|
|
camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height));
|
|
camera->setDrawBuffer(buffer);
|
|
camera->setReadBuffer(buffer);
|
|
camera->setAllowEventFocus(false);
|
|
// tell the camera to use OpenGL frame buffer object where supported.
|
|
camera->setRenderTargetImplementation(renderTargetImplementation);
|
|
|
|
// attach the texture and use it as the color buffer.
|
|
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::POSITIVE_Y);
|
|
|
|
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd());
|
|
}
|
|
|
|
|
|
// top face
|
|
{
|
|
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
|
|
camera->setName("Top face camera");
|
|
camera->setGraphicsContext(gc.get());
|
|
camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height));
|
|
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
|
|
camera->setDrawBuffer(buffer);
|
|
camera->setReadBuffer(buffer);
|
|
camera->setAllowEventFocus(false);
|
|
|
|
// tell the camera to use OpenGL frame buffer object where supported.
|
|
camera->setRenderTargetImplementation(renderTargetImplementation);
|
|
|
|
// attach the texture and use it as the color buffer.
|
|
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::POSITIVE_Z);
|
|
|
|
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-90.0f), 1.0,0.0,0.0));
|
|
}
|
|
|
|
// left face
|
|
{
|
|
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
|
|
camera->setName("Left face camera");
|
|
camera->setGraphicsContext(gc.get());
|
|
camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height));
|
|
camera->setDrawBuffer(buffer);
|
|
camera->setReadBuffer(buffer);
|
|
camera->setAllowEventFocus(false);
|
|
|
|
// tell the camera to use OpenGL frame buffer object where supported.
|
|
camera->setRenderTargetImplementation(renderTargetImplementation);
|
|
|
|
// attach the texture and use it as the color buffer.
|
|
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::NEGATIVE_X);
|
|
|
|
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-90.0f), 0.0,1.0,0.0) * osg::Matrixd::rotate(osg::inDegrees(-90.0f), 0.0,0.0,1.0));
|
|
}
|
|
|
|
// right face
|
|
{
|
|
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
|
|
camera->setName("Right face camera");
|
|
camera->setGraphicsContext(gc.get());
|
|
camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height));
|
|
camera->setDrawBuffer(buffer);
|
|
camera->setReadBuffer(buffer);
|
|
camera->setAllowEventFocus(false);
|
|
|
|
// tell the camera to use OpenGL frame buffer object where supported.
|
|
camera->setRenderTargetImplementation(renderTargetImplementation);
|
|
|
|
// attach the texture and use it as the color buffer.
|
|
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::POSITIVE_X);
|
|
|
|
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(90.0f), 0.0,1.0,0.0 ) * osg::Matrixd::rotate(osg::inDegrees(90.0f), 0.0,0.0,1.0));
|
|
}
|
|
|
|
// bottom face
|
|
{
|
|
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
|
|
camera->setGraphicsContext(gc.get());
|
|
camera->setName("Bottom face camera");
|
|
camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height));
|
|
camera->setDrawBuffer(buffer);
|
|
camera->setReadBuffer(buffer);
|
|
camera->setAllowEventFocus(false);
|
|
|
|
// tell the camera to use OpenGL frame buffer object where supported.
|
|
camera->setRenderTargetImplementation(renderTargetImplementation);
|
|
|
|
// attach the texture and use it as the color buffer.
|
|
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::NEGATIVE_Z);
|
|
|
|
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(90.0f), 1.0,0.0,0.0) * osg::Matrixd::rotate(osg::inDegrees(180.0f), 0.0,0.0,1.0));
|
|
}
|
|
|
|
// back face
|
|
{
|
|
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
|
|
camera->setName("Back face camera");
|
|
camera->setGraphicsContext(gc.get());
|
|
camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height));
|
|
camera->setDrawBuffer(buffer);
|
|
camera->setReadBuffer(buffer);
|
|
camera->setAllowEventFocus(false);
|
|
|
|
// tell the camera to use OpenGL frame buffer object where supported.
|
|
camera->setRenderTargetImplementation(renderTargetImplementation);
|
|
|
|
// attach the texture and use it as the color buffer.
|
|
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::NEGATIVE_Y);
|
|
|
|
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(180.0f), 1.0,0.0,0.0));
|
|
}
|
|
|
|
viewer.getCamera()->setProjectionMatrixAsPerspective(90.0f, 1.0, 1, 1000.0);
|
|
|
|
|
|
|
|
// distortion correction set up.
|
|
{
|
|
osg::Geode* geode = new osg::Geode();
|
|
geode->addDrawable(createDomeDistortionMesh(osg::Vec3(0.0f,0.0f,0.0f), osg::Vec3(options.width,0.0f,0.0f), osg::Vec3(0.0f,options.height,0.0f), options));
|
|
|
|
// new we need to add the texture to the mesh, we do so by creating a
|
|
// StateSet to contain the Texture StateAttribute.
|
|
osg::StateSet* stateset = geode->getOrCreateStateSet();
|
|
stateset->setTextureAttributeAndModes(0, texture,osg::StateAttribute::ON);
|
|
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
|
|
|
|
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
|
|
camera->setGraphicsContext(gc.get());
|
|
camera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
|
|
camera->setClearColor( osg::Vec4(0.1,0.1,1.0,1.0) );
|
|
camera->setViewport(new osg::Viewport(0, 0, options.width, options.height));
|
|
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
|
|
camera->setDrawBuffer(buffer);
|
|
camera->setReadBuffer(buffer);
|
|
camera->setReferenceFrame(osg::Camera::ABSOLUTE_RF);
|
|
camera->setAllowEventFocus(false);
|
|
//camera->setInheritanceMask(camera->getInheritanceMask() & ~osg::CullSettings::CLEAR_COLOR & ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE);
|
|
//camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
|
|
|
|
camera->setProjectionMatrixAsOrtho2D(0,options.width,0,options.height);
|
|
camera->setViewMatrix(osg::Matrix::identity());
|
|
|
|
// add subgraph to render
|
|
camera->addChild(geode);
|
|
|
|
camera->setName("DistortionCorrectionCamera");
|
|
|
|
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd(), false);
|
|
}
|
|
|
|
viewer.getCamera()->setNearFarRatio(0.0001f);
|
|
}
|
|
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
// use an ArgumentParser object to manage the program arguments.
|
|
osg::ArgumentParser arguments(&argc,argv);
|
|
|
|
CommandLineOptions options;
|
|
options.read(arguments);
|
|
|
|
// construct the viewer.
|
|
osgViewer::Viewer viewer(arguments);
|
|
|
|
// load the nodes from the commandline arguments.
|
|
osg::ref_ptr<osg::Node> loadedModel = osgDB::readRefNodeFiles(arguments);
|
|
|
|
// if not loaded assume no arguments passed in, try use default mode instead.
|
|
if (!loadedModel) loadedModel = osgDB::readRefNodeFile("cow.osgt");
|
|
|
|
if (!loadedModel)
|
|
{
|
|
std::cout << arguments.getApplicationName() <<": No data loaded" << std::endl;
|
|
return 1;
|
|
}
|
|
|
|
|
|
if (arguments.read("--dome") || arguments.read("--puffer") )
|
|
{
|
|
|
|
setDomeCorrection(viewer, options);
|
|
|
|
viewer.setSceneData( loadedModel );
|
|
}
|
|
else if (arguments.read("--faces"))
|
|
{
|
|
|
|
setDomeFaces(viewer, options);
|
|
|
|
viewer.setSceneData( loadedModel );
|
|
}
|
|
else
|
|
{
|
|
osg::Node* distortionNode = createDistortionSubgraph( options, loadedModel.get(), viewer.getCamera()->getClearColor());
|
|
viewer.setSceneData( distortionNode );
|
|
}
|
|
|
|
while (arguments.read("--sky-light"))
|
|
{
|
|
viewer.setLightingMode(osg::View::SKY_LIGHT);
|
|
}
|
|
|
|
if (viewer.getLightingMode()==osg::View::HEADLIGHT)
|
|
{
|
|
viewer.getLight()->setPosition(osg::Vec4(0.0f,0.0f,0.0f,1.0f));
|
|
}
|
|
|
|
|
|
// load the nodes from the commandline arguments.
|
|
if (!viewer.getSceneData())
|
|
{
|
|
osg::notify(osg::NOTICE)<<"Please specify a model filename on the command line."<<std::endl;
|
|
return 1;
|
|
}
|
|
|
|
|
|
// set up the camera manipulators.
|
|
{
|
|
osg::ref_ptr<osgGA::KeySwitchMatrixManipulator> keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;
|
|
|
|
keyswitchManipulator->addMatrixManipulator( '1', "Trackball", new osgGA::TrackballManipulator() );
|
|
keyswitchManipulator->addMatrixManipulator( '2', "Flight", new osgGA::FlightManipulator() );
|
|
keyswitchManipulator->addMatrixManipulator( '3', "Drive", new osgGA::DriveManipulator() );
|
|
keyswitchManipulator->addMatrixManipulator( '4', "Terrain", new osgGA::TerrainManipulator() );
|
|
|
|
std::string pathfile;
|
|
char keyForAnimationPath = '5';
|
|
while (arguments.read("-p",pathfile))
|
|
{
|
|
osgGA::AnimationPathManipulator* apm = new osgGA::AnimationPathManipulator(pathfile);
|
|
if (apm || !apm->valid())
|
|
{
|
|
unsigned int num = keyswitchManipulator->getNumMatrixManipulators();
|
|
keyswitchManipulator->addMatrixManipulator( keyForAnimationPath, "Path", apm );
|
|
keyswitchManipulator->selectMatrixManipulator(num);
|
|
++keyForAnimationPath;
|
|
}
|
|
}
|
|
|
|
viewer.setCameraManipulator( keyswitchManipulator.get() );
|
|
}
|
|
|
|
viewer.setThreadingModel(osgViewer::Viewer::SingleThreaded);
|
|
|
|
// add window resize handler
|
|
viewer.addEventHandler(new osgViewer::WindowSizeHandler);
|
|
|
|
// add the state manipulator
|
|
viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
|
|
|
|
// add the stats handler
|
|
viewer.addEventHandler(new osgViewer::StatsHandler);
|
|
|
|
return viewer.run();
|
|
}
|
|
|