#include <osg/Camera>
#include <osg/GraphicsContext>
+#include <osg/io_utils>
#include <osg/Math>
#include <osg/Matrix>
+#include <osg/Notify>
+#include <osg/Program>
#include <osg/Quat>
+#include <osg/TexMat>
#include <osg/Vec3d>
#include <osg/Viewport>
// resized; if the the viewport isn't copied here, it gets updated
// twice and ends up with the wrong value.
farCamera->setViewport(simgear::clone(camera->getViewport()));
- _viewer->addSlave(farCamera, view, projection, useMasterSceneData);
+ farCamera->setDrawBuffer(camera->getDrawBuffer());
+ farCamera->setReadBuffer(camera->getReadBuffer());
+ farCamera->setRenderTargetImplementation(
+ camera->getRenderTargetImplementation());
+ const Camera::BufferAttachmentMap& bufferMap
+ = camera->getBufferAttachmentMap();
+ if (bufferMap.count(Camera::COLOR_BUFFER) != 0) {
+ farCamera->attach(
+ Camera::COLOR_BUFFER,
+ bufferMap.find(Camera::COLOR_BUFFER)->second._texture);
+ }
+ _viewer->addSlave(farCamera, projection, view, useMasterSceneData);
installCullVisitor(farCamera);
info->farCamera = farCamera;
info->farSlaveIndex = _viewer->getNumSlaves() - 1;
camera->setCullMask(camera->getCullMask() & ~simgear::BACKGROUND_BIT);
camera->setClearMask(GL_DEPTH_BUFFER_BIT);
}
- _viewer->addSlave(camera, view, projection, useMasterSceneData);
+ _viewer->addSlave(camera, projection, view, useMasterSceneData);
installCullVisitor(camera);
info->camera = camera;
info->slaveIndex = _viewer->getNumSlaves() - 1;
namespace flightgear
{
+// Mostly copied from osg's osgViewer/View.cpp
+
+static osg::Geometry* createParoramicSphericalDisplayDistortionMesh(
+ const Vec3& origin, const Vec3& widthVector, const Vec3& heightVector,
+ double sphere_radius, double collar_radius,
+ Image* intensityMap = 0, const Matrix& projectorMatrix = Matrix())
+{
+ 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);
+ bool flip = false;
+ bool texcoord_flip = false;
+
+ osg::Vec3d projector = eye - osg::Vec3d(0.0,0.0, distance);
+
+
+ OSG_INFO<<"createParoramicSphericalDisplayDistortionMesh : Projector position = "<<projector<<std::endl;
+ OSG_INFO<<"createParoramicSphericalDisplayDistortionMesh : distance = "<<distance<<std::endl;
+
+ // create the quad to visualize.
+ osg::Geometry* geometry = new osg::Geometry();
+
+ geometry->setSupportsDisplayList(false);
+
+ osg::Vec3 xAxis(widthVector);
+ float width = widthVector.length();
+ xAxis /= width;
+
+ osg::Vec3 yAxis(heightVector);
+ float height = heightVector.length();
+ yAxis /= height;
+
+ int noSteps = 160;
+
+ osg::Vec3Array* vertices = new osg::Vec3Array;
+ osg::Vec2Array* texcoords0 = new osg::Vec2Array;
+ osg::Vec2Array* texcoords1 = intensityMap==0 ? new osg::Vec2Array : 0;
+ osg::Vec4Array* colors = new osg::Vec4Array;
+
+ osg::Vec3 bottom = origin;
+ osg::Vec3 dx = xAxis*(width/((float)(noSteps-2)));
+ osg::Vec3 dy = yAxis*(height/((float)(noSteps-1)));
+
+ osg::Vec3 top = origin + yAxis*height;
+
+ osg::Vec3 screenCenter = origin + widthVector*0.5f + heightVector*0.5f;
+ float screenRadius = heightVector.length() * 0.5f;
+
+ geometry->getOrCreateStateSet()->setMode(GL_CULL_FACE, osg::StateAttribute::OFF | osg::StateAttribute::PROTECTED);
+
+ for(int i=0;i<noSteps;++i)
+ {
+ osg::Vec3 cursor = bottom+dy*(float)i;
+ for(int j=0;j<noSteps;++j)
+ {
+ osg::Vec2 texcoord(double(i)/double(noSteps-1), double(j)/double(noSteps-1));
+ double theta = texcoord.x() * 2.0 * osg::PI;
+ double phi = (1.0-texcoord.y()) * osg::PI;
+
+ if (texcoord_flip) texcoord.y() = 1.0f - texcoord.y();
+
+ osg::Vec3 pos(sin(phi)*sin(theta), sin(phi)*cos(theta), cos(phi));
+ pos = pos*projectorMatrix;
+
+ double alpha = atan2(pos.x(), pos.y());
+ if (alpha<0.0) alpha += 2.0*osg::PI;
+
+ double beta = atan2(sqrt(pos.x()*pos.x() + pos.y()*pos.y()), pos.z());
+ if (beta<0.0) beta += 2.0*osg::PI;
+
+ double gamma = atan2(sqrt(double(pos.x()*pos.x() + pos.y()*pos.y())), double(pos.z()+distance));
+ if (gamma<0.0) gamma += 2.0*osg::PI;
+
+
+ osg::Vec3 v = screenCenter + osg::Vec3(sin(alpha)*gamma*2.0/osg::PI, -cos(alpha)*gamma*2.0/osg::PI, 0.0f)*screenRadius;
+
+ if (flip)
+ vertices->push_back(osg::Vec3(v.x(), top.y()-(v.y()-origin.y()),v.z()));
+ else
+ vertices->push_back(v);
+
+ texcoords0->push_back( texcoord );
+
+ osg::Vec2 texcoord1(alpha/(2.0*osg::PI), 1.0f - beta/osg::PI);
+ if (intensityMap)
+ {
+ colors->push_back(intensityMap->getColor(texcoord1));
+ }
+ else
+ {
+ colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
+ if (texcoords1) texcoords1->push_back( texcoord1 );
+ }
+
+
+ }
+ }
+
+
+ // pass the created vertex array to the points geometry object.
+ geometry->setVertexArray(vertices);
+
+ geometry->setColorArray(colors);
+ geometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
+
+ geometry->setTexCoordArray(0,texcoords0);
+ if (texcoords1) geometry->setTexCoordArray(1,texcoords1);
+
+ osg::DrawElementsUShort* elements = new osg::DrawElementsUShort(osg::PrimitiveSet::TRIANGLES);
+ geometry->addPrimitiveSet(elements);
+
+ for(int i=0;i<noSteps-1;++i)
+ {
+ for(int j=0;j<noSteps-1;++j)
+ {
+ int i1 = j+(i+1)*noSteps;
+ int i2 = j+(i)*noSteps;
+ int i3 = j+1+(i)*noSteps;
+ int i4 = j+1+(i+1)*noSteps;
+
+ osg::Vec3& v1 = (*vertices)[i1];
+ osg::Vec3& v2 = (*vertices)[i2];
+ osg::Vec3& v3 = (*vertices)[i3];
+ osg::Vec3& v4 = (*vertices)[i4];
+
+ if ((v1-screenCenter).length()>screenRadius) continue;
+ if ((v2-screenCenter).length()>screenRadius) continue;
+ if ((v3-screenCenter).length()>screenRadius) continue;
+ if ((v4-screenCenter).length()>screenRadius) continue;
+
+ elements->push_back(i1);
+ elements->push_back(i2);
+ elements->push_back(i3);
+
+ elements->push_back(i1);
+ elements->push_back(i3);
+ elements->push_back(i4);
+ }
+ }
+
+ return geometry;
+}
+
+void CameraGroup::buildDistortionCamera(const SGPropertyNode* psNode,
+ Camera* camera)
+{
+ const SGPropertyNode* texNode = psNode->getNode("texture");
+ if (!texNode) {
+ // error
+ return;
+ }
+ string texName = texNode->getStringValue();
+ TextureMap::iterator itr = _textureTargets.find(texName);
+ if (itr == _textureTargets.end()) {
+ // error
+ return;
+ }
+ Viewport* viewport = camera->getViewport();
+ float width = viewport->width();
+ float height = viewport->height();
+ TextureRectangle* texRect = itr->second.get();
+ double radius = psNode->getDoubleValue("radius", 1.0);
+ double collar = psNode->getDoubleValue("collar", 0.45);
+ Geode* geode = new Geode();
+ geode->addDrawable(createParoramicSphericalDisplayDistortionMesh(
+ Vec3(0.0f,0.0f,0.0f), Vec3(width,0.0f,0.0f),
+ Vec3(0.0f,height,0.0f), radius, collar));
+
+ // new we need to add the texture to the mesh, we do so by creating a
+ // StateSet to contain the Texture StateAttribute.
+ StateSet* stateset = geode->getOrCreateStateSet();
+ stateset->setTextureAttributeAndModes(0, texRect, StateAttribute::ON);
+ stateset->setMode(GL_LIGHTING, StateAttribute::OFF);
+
+ TexMat* texmat = new TexMat;
+ texmat->setScaleByTextureRectangleSize(true);
+ stateset->setTextureAttributeAndModes(0, texmat, osg::StateAttribute::ON);
+#if 0
+ if (!applyIntensityMapAsColours && intensityMap)
+ {
+ stateset->setTextureAttributeAndModes(1, new osg::Texture2D(intensityMap), osg::StateAttribute::ON);
+ }
+#endif
+ // add subgraph to render
+ camera->addChild(geode);
+ camera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
+ camera->setClearColor(osg::Vec4(0.0, 0.0, 0.0, 1.0));
+ camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
+ camera->setCullingMode(osg::CullSettings::NO_CULLING);
+ camera->setName("DistortionCorrectionCamera");
+}
+
CameraInfo* CameraGroup::buildCamera(SGPropertyNode* cameraNode)
{
WindowBuilder *wBuild = WindowBuilder::getWindowBuilder();
double sheary = cameraNode->getDoubleValue("shear-y", 0);
pOff.makeTranslate(-shearx, -sheary, 0);
}
- CameraInfo* info = addCamera(cameraFlags, camera, pOff, vOff);
+ const SGPropertyNode* textureNode = cameraNode->getNode("texture");
+ if (textureNode) {
+ string texName = textureNode->getStringValue("name");
+ int tex_width = textureNode->getIntValue("width");
+ int tex_height = textureNode->getIntValue("height");
+ TextureRectangle* texture = new TextureRectangle;
+
+ texture->setTextureSize(tex_width, tex_height);
+ texture->setInternalFormat(GL_RGB);
+ texture->setFilter(Texture::MIN_FILTER, Texture::LINEAR);
+ texture->setFilter(Texture::MAG_FILTER, Texture::LINEAR);
+ texture->setWrap(Texture::WRAP_S, Texture::CLAMP_TO_EDGE);
+ texture->setWrap(Texture::WRAP_T, Texture::CLAMP_TO_EDGE);
+ camera->setDrawBuffer(GL_FRONT);
+ camera->setReadBuffer(GL_FRONT);
+ camera->setRenderTargetImplementation(Camera::FRAME_BUFFER_OBJECT);
+ camera->attach(Camera::COLOR_BUFFER, texture);
+ _textureTargets[texName] = texture;
+ } else {
+ camera->setDrawBuffer(GL_BACK);
+ camera->setReadBuffer(GL_BACK);
+ }
+ const SGPropertyNode* psNode = cameraNode->getNode("panoramic-spherical");
+ bool useMasterSceneGraph = !psNode;
+ CameraInfo* info = addCamera(cameraFlags, camera, vOff, pOff,
+ useMasterSceneGraph);
// If a viewport isn't set on the camera, then it's hard to dig it
// out of the SceneView objects in the viewer, and the coordinates
// of mouse events are somewhat bizzare.
SGPropertyNode* viewportNode = cameraNode->getNode("viewport", true);
buildViewport(info, viewportNode, window->gc->getTraits());
updateCameras(info);
+ // Distortion camera needs the viewport which is created by addCamera().
+ if (psNode) {
+ info->flags = info->flags | VIEW_ABSOLUTE;
+ buildDistortionCamera(psNode, camera);
+ }
return info;
}
projects / flightgear.git / commitdiff