FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Improved the UpdateCameraAndTexGenCallback so it properly handles rotation and

Browse Source 
translations within the reflector nodepath.
This commit is contained in:
Robert Osfield
2005-10-06 20:02:18 +00:00
parent 808511468b
commit 18d680d01f
1 changed files with 16 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
examples/osgprerendercubemap/osgprerendercubemap.cpp
View File

@@ -17,6 +17,7 @@
#include <osg/CullFace>
#include <osg/Material>
#include <osg/RefNodePath>
#include <osg/PositionAttitudeTransform>
#include <osgUtil/TransformCallback>
@@ -88,9 +89,12 @@ ref_ptr<Group> _create_scene()
osg::RefNodePath createReflector()
{
ref_ptr<Group> scene = new Group;
ref_ptr<osg::PositionAttitudeTransform> pat = new osg::PositionAttitudeTransform;
pat->setPosition(osg::Vec3(0.0f,0.0f,0.0f));
pat->setAttitude(osg::Quat(osg::inDegrees(0.0f),osg::Vec3(0.0f,0.0f,1.0f)));
ref_ptr<Geode> geode_1 = new Geode;
scene->addChild(geode_1.get());
pat->addChild(geode_1.get());
const float radius = 0.8f;
ref_ptr<TessellationHints> hints = new TessellationHints;
@@ -100,7 +104,7 @@ osg::RefNodePath createReflector()
geode_1->addDrawable(shape.get());
osg::RefNodePath refNodeList;
refNodeList.push_back(scene.get());
refNodeList.push_back(pat.get());
refNodeList.push_back(geode_1.get());
return refNodeList;
@@ -122,11 +126,11 @@ class UpdateCameraAndTexGenCallback : public osg::NodeCallback
{
// first update subgraph to make sure objects are all moved into postion
traverse(node,nv);
// compute the position of the center of the reflector subgraph
osg::Matrixd matrix = osg::computeLocalToWorld(_reflectorNodePath);
osg::Matrixd worldToLocal = osg::computeWorldToLocal(_reflectorNodePath);
osg::BoundingSphere bs = _reflectorNodePath.back()->getBound();
osg::Vec3 position = bs.center() * matrix;
osg::Vec3 position = bs.center();
typedef std::pair<osg::Vec3, osg::Vec3> ImageData;
const ImageData id[] =
@@ -143,11 +147,15 @@ class UpdateCameraAndTexGenCallback : public osg::NodeCallback
i<6 && i<_cameraNodes.size();
++i)
{
osg::Matrix localOffset;
localOffset.makeLookAt(position,position+id[i].first,id[i].second);
osg::Matrix viewMatrix = worldToLocal*localOffset;
_cameraNodes[i]->setReferenceFrame(osg::CameraNode::ABSOLUTE_RF);
_cameraNodes[i]->setProjectionMatrixAsFrustum(-1.0,1.0,-1.0,1.0,1.0,10000.0);
_cameraNodes[i]->setViewMatrixAsLookAt(position,position+id[i].first,id[i].second);
_cameraNodes[i]->setViewMatrix(viewMatrix);
}
}
protected:
@@ -203,7 +211,6 @@ osg::Group* createShadowedScene(osg::Node* reflectedSubgraph, osg::RefNodePath r
UpdateCameraAndTexGenCallback::CameraList cameraNodes;
for(unsigned int i=0; i<6; ++i)
{
// create the camera
osg::CameraNode* camera = new osg::CameraNode;