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Wired up RTT cubemap cameras and simple distortion mesh.

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This commit is contained in:
Robert Osfield
2007-02-21 19:41:03 +00:00
parent ee9440d155
commit 9a1ce56ce5
1 changed files with 116 additions and 52 deletions
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168
examples/osgdistortion/osgdistortion.cpp
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@@ -13,10 +13,14 @@
#include <osg/TextureCubeMap>
#include <osg/io_utils>
#include <osgGA/TrackballManipulator>
#include <osgGA/FlightManipulator>
#include <osgGA/DriveManipulator>
#include <osgGA/KeySwitchMatrixManipulator>
#include <osgGA/StateSetManipulator>
#include <osgGA/AnimationPathManipulator>
#include <osgGA/TerrainManipulator>
#include <osgUtil/SmoothingVisitor>
@@ -207,6 +211,7 @@ void setDomeFaces(osgViewer::Viewer& viewer, osg::ArgumentParser& /*arguments*/)
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
@@ -279,22 +284,6 @@ void setDomeFaces(osgViewer::Viewer& viewer, osg::ArgumentParser& /*arguments*/)
viewer.assignSceneDataToCameras();
}
struct DrawCallback : public osg::Drawable::DrawCallback
{
DrawCallback() {}
virtual void drawImplementation(osg::State& state,const osg::Drawable* drawable) const
{
osg::notify(osg::NOTICE)<<"I am here"<<std::endl;
osg::notify(osg::NOTICE)<<" Projection matrix "<<state.getProjectionMatrix()<<std::endl;
osg::notify(osg::NOTICE)<<" ModelView matrix "<<state.getModelViewMatrix()<<std::endl;
drawable->drawImplementation(state);
}
};
void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& /*arguments*/)
{
@@ -330,49 +319,76 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& /*argumen
int center_x = width/2;
int center_y = height/2;
int camera_width = 256;
int camera_height = 256;
int tex_width = 256;
int tex_height = 256;
int camera_width = 512;
int camera_height = 512;
int tex_width = 512;
int tex_height = 512;
#define CUBE_MAP
#ifdef CUBE_MAP
osg::TextureCubeMap* texture = new osg::TextureCubeMap;
#else
osg::Texture2D* texture = new osg::Texture2D;
#endif
texture->setTextureSize(tex_width, tex_height);
texture->setInternalFormat(GL_RGB);
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);
texture->setFilter(osg::TextureCubeMap::MIN_FILTER,osg::TextureCubeMap::LINEAR);
texture->setFilter(osg::TextureCubeMap::MAG_FILTER,osg::TextureCubeMap::LINEAR);
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
texture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR);
#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(center_x-camera_width/2, center_y, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height));
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
// attach the texture and use it as the color buffer.
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::POSITIVE_Z);
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.
#ifdef CUBE_MAP
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::POSITIVE_Z);
#else
camera->attach(osg::Camera::COLOR_BUFFER, texture);
#endif
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(center_x-camera_width/2, center_y+camera_height, camera_width, camera_height));
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.
#ifdef CUBE_MAP
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::POSITIVE_Y);
#else
camera->attach(osg::Camera::COLOR_BUFFER, texture);
#endif
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-90.0f), 1.0,0.0,0.0));
}
@@ -382,13 +398,20 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& /*argumen
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setName("Left face camera");
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(center_x-camera_width*3/2, center_y, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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.
#ifdef CUBE_MAP
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::NEGATIVE_X);
#else
camera->attach(osg::Camera::COLOR_BUFFER, texture);
#endif
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-90.0f), 0.0,1.0,0.0));
}
@@ -398,13 +421,20 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& /*argumen
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setName("Right face camera");
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(center_x+camera_width/2, center_y, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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.
#ifdef CUBE_MAP
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::NEGATIVE_X);
#else
camera->attach(osg::Camera::COLOR_BUFFER, texture);
#endif
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(90.0f), 0.0,1.0,0.0));
}
@@ -414,13 +444,20 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& /*argumen
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setName("Bottom face camera");
camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y-camera_height, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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.
#ifdef CUBE_MAP
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::NEGATIVE_Y);
#else
camera->attach(osg::Camera::COLOR_BUFFER, texture);
#endif
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(90.0f), 1.0,0.0,0.0));
}
@@ -430,13 +467,20 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& /*argumen
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setName("Back face camera");
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y-2*camera_height, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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.
#ifdef CUBE_MAP
camera->attach(osg::Camera::COLOR_BUFFER, texture, 0, osg::TextureCubeMap::NEGATIVE_Z);
#else
camera->attach(osg::Camera::COLOR_BUFFER, texture);
#endif
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-180.0f), 1.0,0.0,0.0));
}
@@ -464,28 +508,28 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& /*argumen
int noSteps = 50;
osg::Vec3Array* vertices = new osg::Vec3Array;
osg::Vec2Array* texcoords = new osg::Vec2Array;
osg::Vec3Array* texcoords = new osg::Vec3Array;
osg::Vec4Array* colors = new osg::Vec4Array;
osg::Vec3 bottom = origin;
osg::Vec3 dx = xAxis*(width/((float)(noSteps-1)));
osg::Vec3 dy = yAxis*(height/((float)(noSteps-1)));
osg::Vec2 bottom_texcoord(0.0f,0.0f);
osg::Vec2 dx_texcoord(1.0f/(float)(noSteps-1),0.0f);
osg::Vec2 dy_texcoord(0.0f,1.0f/(float)(noSteps-1));
osg::Vec3 bottom_texcoord(0.0f,0.0f,0.0f);
osg::Vec3 dx_texcoord(1.0f/(float)(noSteps-1),0.0f,0.0f);
osg::Vec3 dy_texcoord(0.0f,1.0f/(float)(noSteps-1),0.0f);
osg::Vec3 cursor = bottom;
osg::Vec2 texcoord = bottom_texcoord;
osg::Vec3 texcoord = bottom_texcoord;
int i,j;
for(i=0;i<noSteps;++i)
{
osg::Vec3 cursor = bottom+dy*(float)i;
osg::Vec2 texcoord = bottom_texcoord+dy_texcoord*(float)i;
osg::Vec3 texcoord = bottom_texcoord+dy_texcoord*(float)i;
for(j=0;j<noSteps;++j)
{
vertices->push_back(cursor);
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));
texcoords->push_back(osg::Vec3((sin(texcoord.x()*osg::PI-osg::PI*0.5)+1.0f)*0.5f,(1.0-sin(texcoord.y()*osg::PI-osg::PI*0.5))*0.5f,1.0));
colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
cursor += dx;
@@ -500,9 +544,6 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& /*argumen
polyGeom->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
polyGeom->setTexCoordArray(0,texcoords);
polyGeom->setDrawCallback(new DrawCallback);
for(i=0;i<noSteps-1;++i)
{
@@ -529,11 +570,12 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& /*argumen
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, width/2, height/2));
camera->setViewport(new osg::Viewport(0, 0, width, 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);
@@ -545,10 +587,6 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& /*argumen
camera->setName("DistortionCorrectionCamera");
osg::notify(osg::NOTICE)<<"Original Projection matrix "<<camera->getProjectionMatrix()<<std::endl;
osg::notify(osg::NOTICE)<<" View matrix "<<camera->getViewMatrix()<<std::endl;
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd());
}
}
@@ -592,6 +630,32 @@ int main(int argc, char** argv)
viewer.setSceneData( distortionNode );
}
// 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 the state manipulator