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Added osgmultiplecameras example and support for pre/post multiplaction.

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This commit is contained in:
Robert Osfield
2005-06-15 10:59:10 +00:00
parent 71122ff38f
commit dfaed083ea
9 changed files with 351 additions and 15 deletions
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1
Make/makedirdefs
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@@ -201,6 +201,7 @@ EXAMPLE_DIRS = \
osgmotionblur\
osgmovie\
osgmultitexture\
osgmultiplecameras\
osgoccluder\
osgpagedlod\
osgparticle\

27
VisualStudio/VisualStudio.dsw
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@@ -1074,6 +1074,33 @@ Package=<4>
###############################################################################
Project: "Example osgmultiplecameras"=.\examples\osgmultiplecameras\osgmultiplecameras.dsp - Package Owner=<4>
Package=<5>
{{{
}}}
Package=<4>
{{{
Begin Project Dependency
Project_Dep_Name Core osg
End Project Dependency
Begin Project Dependency
Project_Dep_Name Core osgDB
End Project Dependency
Begin Project Dependency
Project_Dep_Name Core osgGA
End Project Dependency
Begin Project Dependency
Project_Dep_Name Core osgProducer
End Project Dependency
Begin Project Dependency
Project_Dep_Name Core osgUtil
End Project Dependency
}}}
###############################################################################
Project: "Example osgoccluder"=.\examples\osgoccluder\osgoccluder.dsp - Package Owner=<4>
Package=<5>

97
VisualStudio/examples/osgmultiplecameras/osgmultiplecameras.dsp Normal file
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@@ -0,0 +1,97 @@
# Microsoft Developer Studio Project File - Name="Example osgmultiplecameras" - Package Owner=<4>
# Microsoft Developer Studio Generated Build File, Format Version 6.00
# ** DO NOT EDIT **
# TARGTYPE "Win32 (x86) Console Application" 0x0103
CFG=Example osgmultiplecameras - Win32 Release
!MESSAGE This is not a valid makefile. To build this project using NMAKE,
!MESSAGE use the Export Makefile command and run
!MESSAGE
!MESSAGE NMAKE /f "osgmultiplecameras.mak".
!MESSAGE
!MESSAGE You can specify a configuration when running NMAKE
!MESSAGE by defining the macro CFG on the command line. For example:
!MESSAGE
!MESSAGE NMAKE /f "osgmultiplecameras.mak" CFG="Example osgmultiplecameras - Win32 Release"
!MESSAGE
!MESSAGE Possible choices for configuration are:
!MESSAGE
!MESSAGE "Example osgmultiplecameras - Win32 Release" (based on "Win32 (x86) Console Application")
!MESSAGE "Example osgmultiplecameras - Win32 Debug" (based on "Win32 (x86) Console Application")
!MESSAGE
# Begin Project
# PROP AllowPerConfigDependencies 0
# PROP Scc_ProjName ""
# PROP Scc_LocalPath ""
CPP=cl.exe
RSC=rc.exe
!IF "$(CFG)" == "Example osgmultiplecameras - Win32 Release"
# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 0
# PROP BASE Output_Dir "Release"
# PROP BASE Intermediate_Dir "Release"
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 0
# PROP Output_Dir "Release"
# PROP Intermediate_Dir "Release"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
MTL=midl.exe
# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
# ADD CPP /nologo /MD /W3 /GR /GX /O2 /I "../../../include" /I "../../../../OpenThreads/include" /I "../../../../Producer/include" /I "../../../../3rdParty/include" /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /Zm200 /c
# ADD BASE RSC /l 0x809 /d "NDEBUG"
# ADD RSC /l 0x809 /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
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LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
# ADD LINK32 OpenThreadsWin32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"../../../bin/osgmultiplecameras.exe" /libpath:"../../../lib" /libpath:"../../../../OpenThreads/lib/win32" /libpath:"../../../../Producer/lib" /libpath:"../../../../3rdParty/lib"
!ELSEIF "$(CFG)" == "Example osgmultiplecameras - Win32 Debug"
# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 1
# PROP BASE Output_Dir "Debug"
# PROP BASE Intermediate_Dir "Debug"
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 1
# PROP Output_Dir "Debug"
# PROP Intermediate_Dir "Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
MTL=midl.exe
# ADD BASE CPP /nologo /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
# ADD CPP /nologo /MDd /W3 /Gm /GR /GX /Zi /Od /I "../../../include" /I "../../../../OpenThreads/include" /I "../../../../Producer/include" /I "../../../../3rdParty/include" /D "_CONSOLE" /D "_MBCS" /D "FL_DLL" /D "WIN32" /D "_DEBUG" /FR /YX /FD /Zm200 /c
# ADD BASE RSC /l 0x809 /d "_DEBUG"
# ADD RSC /l 0x809 /d "_DEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
# ADD LINK32 OpenThreadsWin32d.lib glu32.lib opengl32.lib /nologo /subsystem:console /debug /machine:I386 /nodefaultlib:"libcmt" /out:"../../../bin/osgmultiplecamerasd.exe" /pdbtype:sept /libpath:"../../../lib" /libpath:"../../../../OpenThreads/lib/win32" /libpath:"../../../../Producer/lib" /libpath:"../../../../3rdParty/lib"
# SUBTRACT LINK32 /incremental:no
!ENDIF
# Begin Target
# Name "Example osgmultiplecameras - Win32 Release"
# Name "Example osgmultiplecameras - Win32 Debug"
# Begin Source File
SOURCE=..\..\..\examples\osgmultiplecameras\osgmultiplecameras.cpp
# End Source File
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# Begin Group "Resource Files"
# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
# End Group
# End Project

18
examples/osgmultiplecameras/GNUmakefile Normal file
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@@ -0,0 +1,18 @@
TOPDIR = ../..
include $(TOPDIR)/Make/makedefs
CXXFILES =\
osgmultiplecameras.cpp\
LIBS += -losgProducer -lProducer -losgText -losgProducer -lProducer -losgGA -losgDB -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
INSTFILES = \
$(CXXFILES)\
GNUmakefile.inst=GNUmakefile
EXEC = osgmultiplecameras
INC += $(X_INC)
include $(TOPDIR)/Make/makerules

14
examples/osgmultiplecameras/GNUmakefile.inst Normal file
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@@ -0,0 +1,14 @@
TOPDIR = ../..
include $(TOPDIR)/Make/makedefs
CXXFILES =\
osgmultiplecameras.cpp\
LIBS += -losgProducer -lProducer -losgText -losgProducer -lProducer -losgDB -losgText -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
EXEC = osgmultiplecameras
INC += $(PRODUCER_INCLUDE_DIR) $(X_INC)
LDFLAGS += $(PRODUCER_LIB_DIR)
include $(TOPDIR)/Make/makerules

132
examples/osgmultiplecameras/osgmultiplecameras.cpp Normal file
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@@ -0,0 +1,132 @@
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#include <osgUtil/Optimizer>
#include <osgDB/ReadFile>
#include <osgProducer/Viewer>
#include <osg/Material>
#include <osg/Geode>
#include <osg/BlendFunc>
#include <osg/Depth>
#include <osg/Projection>
#include <osg/PolygonOffset>
#include <osg/MatrixTransform>
#include <osg/CameraNode>
#include <osgText/Text>
osg::Node* createRearView(osg::Node* subgraph)
{
osg::CameraNode* camera = new osg::CameraNode;
// set the projection matrix
camera->setProjectionMatrix(osg::Matrix::ortho2D(0,1280,0,1024));
camera->setViewport(420,800,400,200);
camera->getOrCreateStateSet()->setAttribute(camera->getViewport());
// set the view matrix
camera->setCullingActive(false);
camera->setReferenceFrame(osg::Transform::RELATIVE_RF);
camera->setTransformOrder(osg::CameraNode::POST_MULTIPLE);
camera->setProjectionMatrix(osg::Matrixd::identity());
camera->setViewMatrix(osg::Matrixd::rotate(osg::inDegrees(180.0f),0.0f,1.0f,0.0f));
// only clear the depth buffer
camera->setClearMask(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
// draw subgraph after main camera view.
camera->setRenderOrder(osg::CameraNode::POST_RENDER);
camera->addChild(subgraph);
return camera;
}
int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the example which demonstrates how to do Head Up Displays.");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] [filename] ...");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
// construct the viewer.
osgProducer::Viewer viewer(arguments);
// set up the value with sensible default event handlers.
viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS);
// get details on keyboard and mouse bindings used by the viewer.
viewer.getUsage(*arguments.getApplicationUsage());
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
// any option left unread are converted into errors to write out later.
arguments.reportRemainingOptionsAsUnrecognized();
// report any errors if they have occured when parsing the program aguments.
if (arguments.errors())
{
arguments.writeErrorMessages(std::cout);
return 1;
}
// read the scene from the list of file specified commandline args.
osg::ref_ptr<osg::Node> scene = osgDB::readNodeFiles(arguments);
osg::ref_ptr<osg::Group> group = new osg::Group;
// add the HUD subgraph.
if (scene.valid()) group->addChild(scene.get());
group->addChild(createRearView(scene.get()));
// set the scene to render
viewer.setSceneData(group.get());
// create the windows and run the threads.
viewer.realize();
while( !viewer.done() )
{
// wait for all cull and draw threads to complete.
viewer.sync();
// update the scene by traversing it with the the update visitor which will
// call all node update callbacks and animations.
viewer.update();
// fire off the cull and draw traversals of the scene.
viewer.frame();
}
// wait for all cull and draw threads to complete before exit.
viewer.sync();
return 0;
}

13
include/osg/CameraNode
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@@ -64,6 +64,17 @@ class OSG_EXPORT CameraNode : public Transform, public CullSettings
}
enum TransformOrder
{
PRE_MULTIPLE,
POST_MULTIPLE
};
void setTransformOrder(TransformOrder order) { _transformOrder = order; }
TransformOrder getTransformOrder() const { return _transformOrder; }
/** Set the projection matrix. Can be thought of as setting the lens of a camera. */
inline void setProjectionMatrix(const osg::Matrixf& matrix) { _projectionMatrix.set(matrix); }
@@ -225,6 +236,8 @@ class OSG_EXPORT CameraNode : public Transform, public CullSettings
Vec4 _clearColor;
GLbitfield _clearMask;
ref_ptr<Viewport> _viewport;
TransformOrder _transformOrder;
Matrixd _projectionMatrix;
Matrixd _viewMatrix;

22
src/osg/CameraNode.cpp
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@@ -19,6 +19,7 @@ using namespace osg;
CameraNode::CameraNode():
_clearColor(osg::Vec4(0.0f,0.0f,0.0f,1.0f)),
_clearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT),
_transformOrder(PRE_MULTIPLE),
_renderOrder(POST_RENDER),
_renderTargetImplementation(FRAME_BUFFER)
{
@@ -30,6 +31,7 @@ CameraNode::CameraNode(const CameraNode& camera,const CopyOp& copyop):
_clearColor(camera._clearColor),
_clearMask(camera._clearMask),
_viewport(camera._viewport),
_transformOrder(camera._transformOrder),
_projectionMatrix(camera._projectionMatrix),
_viewMatrix(camera._viewMatrix),
_renderOrder(camera._renderOrder),
@@ -143,7 +145,14 @@ bool CameraNode::computeLocalToWorldMatrix(Matrix& matrix,NodeVisitor*) const
{
if (_referenceFrame==RELATIVE_RF)
{
matrix.preMult(_viewMatrix);
if (_transformOrder==PRE_MULTIPLE)
{
matrix.preMult(_viewMatrix);
}
else
{
matrix.postMult(_viewMatrix);
}
}
else // absolute
{
@@ -158,7 +167,16 @@ bool CameraNode::computeWorldToLocalMatrix(Matrix& matrix,NodeVisitor*) const
if (_referenceFrame==RELATIVE_RF)
{
matrix.postMult(inverse);
if (_transformOrder==PRE_MULTIPLE)
{
// note doing inverse so pre becomes post.
matrix.postMult(inverse);
}
else
{
// note doing inverse so post becomes pre.
matrix.preMult(inverse);
}
}
else // absolute
{

42
src/osgUtil/CullVisitor.cpp
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@@ -1029,8 +1029,29 @@ void CullVisitor::apply(osg::CameraNode& camera)
StateSet* node_state = camera.getStateSet();
if (node_state) pushStateSet(node_state);
// use render to texture stage.
if (camera.getReferenceFrame()==osg::Transform::ABSOLUTE_RF)
{
pushProjectionMatrix(createOrReuseMatrix(camera.getProjectionMatrix()));
pushModelViewMatrix(createOrReuseMatrix(camera.getViewMatrix()));
}
else if (camera.getTransformOrder()==osg::CameraNode::POST_MULTIPLE)
{
pushProjectionMatrix(createOrReuseMatrix(getProjectionMatrix()*camera.getProjectionMatrix()));
pushModelViewMatrix(createOrReuseMatrix(getModelViewMatrix()*camera.getViewMatrix()));
}
else // pre multiple
{
pushProjectionMatrix(createOrReuseMatrix(camera.getProjectionMatrix()*getProjectionMatrix()));
pushModelViewMatrix(createOrReuseMatrix(camera.getViewMatrix()*getModelViewMatrix()));
}
if (camera.getRenderOrder()==osg::CameraNode::NESTED_RENDER)
{
handle_cull_callbacks_and_traverse(camera);
}
else
{
// use render to texture stage.
// create the render to texture stage.
osg::ref_ptr<osgUtil::RenderToTextureStage> rtts = new osgUtil::RenderToTextureStage;
@@ -1056,20 +1077,12 @@ void CullVisitor::apply(osg::CameraNode& camera)
// set the current renderbin to be the newly created stage.
setCurrentRenderBin(rtts.get());
pushProjectionMatrix(new osg::RefMatrix(camera.getProjectionMatrix()));
pushModelViewMatrix(new osg::RefMatrix(camera.getViewMatrix()));
// traverse the subgraph
{
handle_cull_callbacks_and_traverse(camera);
}
// restore the previous model view matrix.
popModelViewMatrix();
// restore the previous model view matrix.
popProjectionMatrix();
// restore the previous renderbin.
setCurrentRenderBin(previousRenderBin);
@@ -1088,10 +1101,7 @@ void CullVisitor::apply(osg::CameraNode& camera)
case osg::CameraNode::PRE_RENDER :
getCurrentRenderBin()->getStage()->addPreRenderStage(rtts.get());
break;
case osg::CameraNode::NESTED_RENDER :
getCurrentRenderBin()->getStage()->addPostRenderStage(rtts.get());
break;
case osg::CameraNode::POST_RENDER :
default :
getCurrentRenderBin()->getStage()->addPostRenderStage(rtts.get());
break;
}
@@ -1112,6 +1122,12 @@ void CullVisitor::apply(osg::CameraNode& camera)
}
// restore the previous model view matrix.
popModelViewMatrix();
// restore the previous model view matrix.
popProjectionMatrix();
// pop the node's state off the render graph stack.
if (node_state) popStateSet();