FGFS-4.1/OpenSceneGraph
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Refactored the command line setup to enable better control of set up.

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Added WindowSizeHandler to allow for adjustment of window size.


git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14791 16af8721-9629-0410-8352-f15c8da7e697
This commit is contained in:
Robert Osfield
2015-03-16 12:13:44 +00:00
parent 7165182e35
commit e6e39e7924
1 changed files with 87 additions and 75 deletions
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162
examples/osgdistortion/osgdistortion.cpp
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@@ -52,15 +52,60 @@
using namespace osg;
osg::Node* createDistortionSubgraph(osg::Node* subgraph, const osg::Vec4& clearColour)
struct CommandLineOptions
{
unsigned int width;
unsigned int height;
unsigned int tex_width;
unsigned int tex_height;
double sphere_radius;
double collar_radius;
double distance;
CommandLineOptions():
width(1024),
height(1024),
tex_width(1024),
tex_height(1024),
sphere_radius(1.0),
collar_radius(0.45),
distance(1.0)
{
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return;
}
unsigned int width, height;
wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
distance = sqrt(sphere_radius*sphere_radius - collar_radius*collar_radius);
}
void read(osg::ArgumentParser& arguments)
{
while (arguments.read("--width",width)) {}
while (arguments.read("--height",height)) {}
while (arguments.read("--texture-width",tex_width) || arguments.read("--tx",tex_width) ) {}
while (arguments.read("--texture-height",tex_height) || arguments.read("--ty",tex_height) ) {}
while (arguments.read("--radius", sphere_radius)) {}
while (arguments.read("--collar", collar_radius)) {}
distance = sqrt(sphere_radius*sphere_radius - collar_radius*collar_radius);
while (arguments.read("--distance", distance)) {}
}
};
osg::Node* createDistortionSubgraph(CommandLineOptions& options, osg::Node* subgraph, const osg::Vec4& clearColour)
{
osg::Group* distortionNode = new osg::Group;
unsigned int tex_width = 1024;
unsigned int tex_height = 1024;
osg::Texture2D* texture = new osg::Texture2D;
texture->setTextureSize(tex_width, tex_height);
texture->setTextureSize(options.tex_width, options.tex_height);
texture->setInternalFormat(GL_RGBA);
texture->setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
texture->setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
@@ -79,7 +124,7 @@ osg::Node* createDistortionSubgraph(osg::Node* subgraph, const osg::Vec4& clearC
camera->setViewMatrix(osg::Matrixd::identity());
// set viewport
camera->setViewport(0,0,tex_width,tex_height);
camera->setViewport(0,0,options.tex_width,options.tex_height);
// set the camera to render before the main camera.
camera->setRenderOrder(osg::Camera::PRE_RENDER);
@@ -186,27 +231,13 @@ osg::Node* createDistortionSubgraph(osg::Node* subgraph, const osg::Vec4& clearC
return distortionNode;
}
void setDomeFaces(osgViewer::Viewer& viewer, osg::ArgumentParser& arguments)
void setDomeFaces(osgViewer::Viewer& viewer, CommandLineOptions& options)
{
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return;
}
unsigned int width, height;
wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
while (arguments.read("--width",width)) {}
while (arguments.read("--height",height)) {}
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->x = 0;
traits->y = 0;
traits->width = width;
traits->height = height;
traits->width = options.width;
traits->height = options.height;
traits->windowDecoration = true;
traits->doubleBuffer = true;
traits->sharedContext = 0;
@@ -219,8 +250,8 @@ void setDomeFaces(osgViewer::Viewer& viewer, osg::ArgumentParser& arguments)
}
int center_x = width/2;
int center_y = height/2;
int center_x = options.width/2;
int center_y = options.height/2;
int camera_width = 256;
int camera_height = 256;
@@ -303,27 +334,18 @@ void setDomeFaces(osgViewer::Viewer& viewer, osg::ArgumentParser& arguments)
}
osg::Geometry* createDomeDistortionMesh(const osg::Vec3& origin, const osg::Vec3& widthVector, const osg::Vec3& heightVector,
osg::ArgumentParser& arguments)
CommandLineOptions& options)
{
double sphere_radius = 1.0;
if (arguments.read("--radius", sphere_radius)) {}
double collar_radius = 0.45;
if (arguments.read("--collar", collar_radius)) {}
osg::Vec3d center(0.0,0.0,0.0);
osg::Vec3d eye(0.0,0.0,0.0);
double distance = sqrt(sphere_radius*sphere_radius - collar_radius*collar_radius);
if (arguments.read("--distance", distance)) {}
bool centerProjection = false;
osg::Vec3d projector = eye - osg::Vec3d(0.0,0.0, distance);
osg::Vec3d projector = eye - osg::Vec3d(0.0,0.0, options.distance);
osg::notify(osg::NOTICE)<<"Projector position = "<<projector<<std::endl;
osg::notify(osg::NOTICE)<<"distance = "<<distance<<std::endl;
osg::notify(osg::NOTICE)<<"distance = "<<options.distance<<std::endl;
// create the quad to visualize.
@@ -396,15 +418,15 @@ osg::Geometry* createDomeDistortionMesh(const osg::Vec3& origin, const osg::Vec3
// osg::notify(osg::NOTICE)<<"theta = "<<theta<< "phi="<<phi<<std::endl;
double f = distance * sin(phi);
double e = distance * cos(phi) + sqrt( sphere_radius*sphere_radius - f*f);
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 - distance;
double z = l - options.distance;
osg::Vec3 texcoord(h * cos(theta) / sphere_radius,
h * sin(theta) / sphere_radius,
z / sphere_radius);
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));
@@ -437,33 +459,17 @@ osg::Geometry* createDomeDistortionMesh(const osg::Vec3& origin, const osg::Vec3
return geometry;
}
void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& arguments)
void setDomeCorrection(osgViewer::Viewer& viewer, CommandLineOptions& options)
{
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return;
}
unsigned int width, height;
wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
while (arguments.read("--width",width)) {}
while (arguments.read("--height",height)) {}
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->x = 0;
traits->y = 0;
traits->width = width;
traits->height = height;
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)
{
@@ -471,18 +477,18 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& arguments
return;
}
int tex_width = 512;
int tex_height = 512;
int camera_width = tex_width;
int camera_height = tex_height;
int camera_width = options.tex_width;
int camera_height = options.tex_height;
osg::TextureCubeMap* texture = new osg::TextureCubeMap;
texture->setTextureSize(tex_width, tex_height);
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;
@@ -614,7 +620,7 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& arguments
// distortion correction set up.
{
osg::Geode* geode = new osg::Geode();
geode->addDrawable(createDomeDistortionMesh(osg::Vec3(0.0f,0.0f,0.0f), osg::Vec3(width,0.0f,0.0f), osg::Vec3(0.0f,height,0.0f), arguments));
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.
@@ -626,7 +632,7 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& arguments
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, height));
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);
@@ -635,7 +641,7 @@ void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& arguments
//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,width,0,height);
camera->setProjectionMatrixAsOrtho2D(0,options.width,0,options.height);
camera->setViewMatrix(osg::Matrix::identity());
// add subgraph to render
@@ -655,8 +661,11 @@ 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;
osgViewer::Viewer viewer(arguments);
// load the nodes from the commandline arguments.
osg::Node* loadedModel = osgDB::readNodeFiles(arguments);
@@ -674,20 +683,20 @@ int main(int argc, char** argv)
if (arguments.read("--dome") || arguments.read("--puffer") )
{
setDomeCorrection(viewer, arguments);
setDomeCorrection(viewer, options);
viewer.setSceneData( loadedModel );
}
else if (arguments.read("--faces"))
{
setDomeFaces(viewer, arguments);
setDomeFaces(viewer, options);
viewer.setSceneData( loadedModel );
}
else
{
osg::Node* distortionNode = createDistortionSubgraph( loadedModel, viewer.getCamera()->getClearColor());
osg::Node* distortionNode = createDistortionSubgraph( options, loadedModel, viewer.getCamera()->getClearColor());
viewer.setSceneData( distortionNode );
}
@@ -738,6 +747,9 @@ int main(int argc, char** argv)
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()) );