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

Change Terrain so that it subclassed from CoordinateSystemNode.

Browse Source 
Implemented new update scheme of GeometryTechnique to avoid potential threading issues.

Added Terrain support to .ive.
This commit is contained in:
Robert Osfield 2010-04-03 16:21:34 +00:00
parent 656efbf03f
commit c6c26d5d44
18 changed files with 165 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/osgTerrain/GeometryTechnique
View File

@ -34,7 +34,7 @@ class OSGTERRAIN_EXPORT GeometryTechnique : public TerrainTechnique
META_Object(osgTerrain, GeometryTechnique);
virtual void init();
virtual void init(int dirtyMask, bool assumeMultiThreaded);
virtual Locator* computeMasterLocator();

3
include/osgTerrain/Terrain
View File

@ -14,7 +14,6 @@
#ifndef OSGTerrain
#define OSGTerrain 1
#include <osg/Group>
#include <osg/CoordinateSystemNode>
#include <osgTerrain/TerrainTile>
@ -23,7 +22,7 @@ namespace osgTerrain {
/** Terrain provides a framework for loosely coupling height field data with height rendering algorithms.
* This allows TerrainTechniques to be plugged in at runtime.*/
class OSGTERRAIN_EXPORT Terrain : public osg::Group
class OSGTERRAIN_EXPORT Terrain : public osg::CoordinateSystemNode
{
public:

2
include/osgTerrain/TerrainTechnique
View File

@ -63,7 +63,7 @@ class OSGTERRAIN_EXPORT TerrainTechnique : public osg::Object, public osg::Obser
TerrainTile* getTerrainTile() { return _terrainTile; }
const TerrainTile* getTerrainTile() const { return _terrainTile; }
virtual void init();
virtual void init(int dirtyMask, bool assumeMultiThreaded);
virtual void update(osgUtil::UpdateVisitor* nv);

3
include/osgTerrain/TerrainTile
View File

@ -78,8 +78,7 @@ class OSGTERRAIN_EXPORT TerrainTile : public osg::Group
virtual void traverse(osg::NodeVisitor& nv);
/** Call init on any attached TerrainTechnique.*/
void init();
void init(int dirtyMask, bool assumeMultiThreaded);
/** Set the Terrain that this Terrain tile is a member of.*/
void setTerrain(Terrain* ts);

1
src/osgPlugins/ive/CMakeLists.txt
View File

@ -101,6 +101,7 @@ SET(TARGET_SRC
Stencil.cpp
Switch.cpp
SwitchLayer.cpp
Terrain.cpp
TerrainTile.cpp
TexEnvCombine.cpp
TexEnv.cpp

5
src/osgPlugins/ive/DataInputStream.cpp
View File

@ -112,6 +112,7 @@
#include "Text.h"
#include "Terrain.h"
#include "TerrainTile.h"
#include "Locator.h"
#include "ImageLayer.h"
@ -1836,6 +1837,10 @@ osg::Node* DataInputStream::readNode()
node = new osgTerrain::TerrainTile();
((ive::TerrainTile*)(node.get()))->read(this);
}
else if(nodeTypeID== IVETERRAIN){
node = new osgTerrain::Terrain();
((ive::Terrain*)(node.get()))->read(this);
}
else if(nodeTypeID== IVEVOLUME){
node = new osgVolume::Volume();
((ive::Volume*)(node.get()))->read(this);

12
src/osgPlugins/ive/DataOutputStream.cpp
View File

@ -103,6 +103,7 @@
#include "Text.h"
#include "Terrain.h"
#include "TerrainTile.h"
#include "Locator.h"
#include "ImageLayer.h"
@ -1333,9 +1334,6 @@ void DataOutputStream::writeNode(const osg::Node* node)
else if(dynamic_cast<const osg::Switch*>(node)){
((ive::Switch*)(node))->write(this);
}
else if(dynamic_cast<const osg::CoordinateSystemNode*>(node)){
((ive::CoordinateSystemNode*)(node))->write(this);
}
else if(dynamic_cast<const osgSim::MultiSwitch*>(node)){
((ive::MultiSwitch*)(node))->write(this);
}
@ -1378,9 +1376,17 @@ void DataOutputStream::writeNode(const osg::Node* node)
else if(dynamic_cast<const osgTerrain::TerrainTile*>(node)){
((ive::TerrainTile*)(node))->write(this);
}
else if(dynamic_cast<const osgTerrain::Terrain*>(node)){
((ive::Terrain*)(node))->write(this);
}
else if(dynamic_cast<const osgVolume::Volume*>(node)){
((ive::Volume*)(node))->write(this);
}
else if(dynamic_cast<const osg::CoordinateSystemNode*>(node)){
((ive::CoordinateSystemNode*)(node))->write(this);
}
else if(dynamic_cast<const osgVolume::VolumeTile*>(node)){
((ive::VolumeTile*)(node))->write(this);
}

2
src/osgPlugins/ive/ReadWrite.h
View File

@ -138,7 +138,7 @@ namespace ive {
#define IVEVALIDRANGE 0x0020000B
#define IVENODATAVALUE 0x0020000C
#define IVESWITCHLAYER 0x0020000D
#define IVETERRAIN 0x0020000A
#define IVETERRAIN 0x0020000E
// osgVolume classes
#define IVEVOLUMETILE 0x00300001

63
src/osgPlugins/ive/Terrain.cpp Normal file
View File

@ -0,0 +1,63 @@
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 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 "Exception.h"
#include "Terrain.h"
#include "TerrainTile.h"
#include "CoordinateSystemNode.h"
#include <osgTerrain/GeometryTechnique>
using namespace ive;
void Terrain::write(DataOutputStream* out)
{
// Write Terrain's identification.
out->writeInt(IVETERRAIN);
// If the osg class is inherited by any other class we should also write this to file.
osg::CoordinateSystemNode* csn = dynamic_cast<osg::CoordinateSystemNode*>(this);
if(csn)
((ive::CoordinateSystemNode*)(csn))->write(out);
else
out_THROW_EXCEPTION("Terrain::write(): Could not cast this osgTerrain::Terrain to an osg::CoordinateSystemNode.");
out->writeFloat(getSampleRatio());
out->writeFloat(getVerticalScale());
out->writeInt(getBlendingPolicy());
TerrainTile::writeTerrainTechnique(out, getTerrainTechniquePrototype());
}
void Terrain::read(DataInputStream* in)
{
// Peek on Terrain's identification.
int id = in->peekInt();
if (id != IVETERRAIN) in_THROW_EXCEPTION("TerrainTile::read(): Expected Terrain identification.");
// Read Terrain's identification.
id = in->readInt();
osg::CoordinateSystemNode* csn = dynamic_cast<osg::CoordinateSystemNode*>(this);
if(csn)
((ive::CoordinateSystemNode*)(csn))->read(in);
else
in_THROW_EXCEPTION("Terrain::read(): Could not cast this osgTerran::Terrain to an osg::CoordinateSystemNode.");
setSampleRatio(in->readFloat());
setVerticalScale(in->readFloat());
setBlendingPolicy(static_cast<osgTerrain::TerrainTile::BlendingPolicy>(in->readInt()));
setTerrainTechniquePrototype(TerrainTile::readTerrainTechnique(in));
}

33
src/osgPlugins/ive/Terrain.h Normal file
View File

@ -0,0 +1,33 @@
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 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.
*/
#ifndef IVE_TERRAIN
#define IVE_TERRAIN 1
#include <osgTerrain/Terrain>
#include "ReadWrite.h"
namespace ive
{
class Terrain : public osgTerrain::Terrain, public ReadWrite
{
public:
void write(DataOutputStream* out);
void read(DataInputStream* in);
};
}
#endif

4
src/osgPlugins/ive/TerrainTile.h
View File

@ -27,8 +27,8 @@ public:
void write(DataOutputStream* out);
void read(DataInputStream* in);
void writeTerrainTechnique(DataOutputStream* out, osgTerrain::TerrainTechnique* technique);
osgTerrain::TerrainTechnique* readTerrainTechnique(DataInputStream* out);
static void writeTerrainTechnique(DataOutputStream* out, osgTerrain::TerrainTechnique* technique);
static osgTerrain::TerrainTechnique* readTerrainTechnique(DataInputStream* out);
};

39
src/osgTerrain/GeometryTechnique.cpp
View File

@ -95,7 +95,7 @@ void GeometryTechnique::setFilterMatrixAs(FilterType filterType)
};
}
void GeometryTechnique::init()
void GeometryTechnique::init(int dirtyMask, bool assumeMultiThreaded)
{
OSG_INFO<<"Doing GeometryTechnique::init()"<<std::endl;
@ -106,7 +106,7 @@ void GeometryTechnique::init()
// take a temporary referecen
osg::ref_ptr<TerrainTile> tile = _terrainTile;
if (_terrainTile->getDirtyMask()==0) return;
if (dirtyMask==0) return;
osg::ref_ptr<BufferData> buffer = new BufferData;
@ -114,7 +114,7 @@ void GeometryTechnique::init()
osg::Vec3d centerModel = computeCenterModel(*buffer, masterLocator);
if ((_terrainTile->getDirtyMask() & TerrainTile::IMAGERY_DIRTY)==0)
if ((dirtyMask & TerrainTile::IMAGERY_DIRTY)==0)
{
generateGeometry(*buffer, masterLocator, centerModel);
@ -141,12 +141,14 @@ void GeometryTechnique::init()
if (buffer->_transform.valid()) buffer->_transform->setThreadSafeRefUnref(true);
if (!_currentBufferData)
if (!_currentBufferData || !assumeMultiThreaded)
{
// no currentBufferData so we must be the first init to be applied
_currentBufferData = buffer;
}
else
{
// there is already an active _currentBufferData so we'll request that this gets swapped on next frame.
_newBufferData = buffer;
if (_terrainTile->getTerrain()) _terrainTile->getTerrain()->updateTerrainTileOnNextFrame(_terrainTile);
}
@ -259,7 +261,7 @@ class VertexNormalGenerator
{
if (r<0 || r>=_numRows || c<0 || c>=_numColumns)
{
i = -(1+_boundaryVertices->size());
i = -(1+static_cast<int>(_boundaryVertices->size()));
_boundaryVertices->push_back(v);
// OSG_NOTICE<<"setVertex("<<c<<", "<<r<<", ["<<v<<"], ["<<n<<"]), i="<<i<<" _boundaryVertices["<<-i-1<<"]="<<(*_boundaryVertices)[-i-1]<<"]"<<std::endl;
}
@ -817,27 +819,27 @@ void GeometryTechnique::generateGeometry(BufferData& buffer, Locator* masterLoca
{
if (!(left_tile->getTerrainTechnique()->containsNeighbour(_terrainTile)))
{
left_tile->setDirtyMask(left_tile->getDirtyMask() | TerrainTile::LEFT_EDGE_DIRTY);
if (updateNeighboursImmediately)
{
left_tile->init();
}
int dirtyMask = left_tile->getDirtyMask() | TerrainTile::LEFT_EDGE_DIRTY;
if (updateNeighboursImmediately) left_tile->init(dirtyMask, true);
else left_tile->setDirtyMask(dirtyMask);
}
}
if (right_tile.valid())
{
if (!(right_tile->getTerrainTechnique()->containsNeighbour(_terrainTile)))
{
right_tile->setDirtyMask(right_tile->getDirtyMask() | TerrainTile::RIGHT_EDGE_DIRTY);
if (updateNeighboursImmediately) right_tile->init();
int dirtyMask = right_tile->getDirtyMask() | TerrainTile::RIGHT_EDGE_DIRTY;
if (updateNeighboursImmediately) right_tile->init(dirtyMask, true);
else right_tile->setDirtyMask(dirtyMask);
}
}
if (top_tile.valid())
{
if (!(top_tile->getTerrainTechnique()->containsNeighbour(_terrainTile)))
{
top_tile->setDirtyMask(top_tile->getDirtyMask() | TerrainTile::TOP_EDGE_DIRTY);
if (updateNeighboursImmediately) top_tile->init();
int dirtyMask = top_tile->getDirtyMask() | TerrainTile::TOP_EDGE_DIRTY;
if (updateNeighboursImmediately) top_tile->init(dirtyMask, true);
else top_tile->setDirtyMask(dirtyMask);
}
}
@ -845,8 +847,9 @@ void GeometryTechnique::generateGeometry(BufferData& buffer, Locator* masterLoca
{
if (!(bottom_tile->getTerrainTechnique()->containsNeighbour(_terrainTile)))
{
bottom_tile->setDirtyMask(bottom_tile->getDirtyMask() | TerrainTile::BOTTOM_EDGE_DIRTY);
if (updateNeighboursImmediately) bottom_tile->init();
int dirtyMask = bottom_tile->getDirtyMask() | TerrainTile::BOTTOM_EDGE_DIRTY;
if (updateNeighboursImmediately) bottom_tile->init(dirtyMask, true);
else bottom_tile->setDirtyMask(dirtyMask);
}
}
}
@ -1322,7 +1325,7 @@ void GeometryTechnique::traverse(osg::NodeVisitor& nv)
// if app traversal update the frame count.
if (nv.getVisitorType()==osg::NodeVisitor::UPDATE_VISITOR)
{
if (_terrainTile->getDirty()) _terrainTile->init();
if (_terrainTile->getDirty()) _terrainTile->init(_terrainTile->getDirtyMask(), false);
osgUtil::UpdateVisitor* uv = dynamic_cast<osgUtil::UpdateVisitor*>(&nv);
if (uv)
@ -1345,7 +1348,7 @@ void GeometryTechnique::traverse(osg::NodeVisitor& nv)
if (_terrainTile->getDirty())
{
OSG_INFO<<"******* Doing init ***********"<<std::endl;
_terrainTile->init();
_terrainTile->init(_terrainTile->getDirtyMask(), false);
}
if (_currentBufferData.valid())

4
src/osgTerrain/Terrain.cpp
View File

@ -30,7 +30,7 @@ Terrain::Terrain():
}
Terrain::Terrain(const Terrain& ts, const osg::CopyOp& copyop):
osg::Group(ts,copyop),
osg::CoordinateSystemNode(ts,copyop),
_sampleRatio(ts._sampleRatio),
_verticalScale(ts._verticalScale),
_blendingPolicy(ts._blendingPolicy),
@ -69,7 +69,7 @@ void Terrain::traverse(osg::NodeVisitor& nv)
++itr)
{
TerrainTile* tile = *itr;
if (tile->getTerrainTechnique()) tile->getTerrainTechnique()->update(uv);
tile->traverse(nv);
}
_updateTerrainTileSet.clear();
}

11
src/osgTerrain/TerrainTechnique.cpp
View File

@ -83,9 +83,9 @@ void TerrainTechnique::setTerrainTile(TerrainTile* tile)
_terrainTile = tile;
}
void TerrainTechnique::init()
void TerrainTechnique::init(int dirtyMask, bool assumeMultiThreaded)
{
OSG_NOTIFY(osg::NOTICE)<<className()<<"::initialize(..) not implementated yet"<<std::endl;
OSG_NOTIFY(osg::NOTICE)<<className()<<"::init(..) not implementated yet"<<std::endl;
}
void TerrainTechnique::update(osgUtil::UpdateVisitor* uv)
@ -112,7 +112,7 @@ void TerrainTechnique::traverse(osg::NodeVisitor& nv)
// if app traversal update the frame count.
if (nv.getVisitorType()==osg::NodeVisitor::UPDATE_VISITOR)
{
if (_terrainTile->getDirty()) _terrainTile->init();
if (_terrainTile->getDirty()) _terrainTile->init(_terrainTile->getDirtyMask(), false);
osgUtil::UpdateVisitor* uv = dynamic_cast<osgUtil::UpdateVisitor*>(&nv);
if (uv)
@ -132,7 +132,10 @@ void TerrainTechnique::traverse(osg::NodeVisitor& nv)
}
}
if (_terrainTile->getDirty()) _terrainTile->init();
if (_terrainTile->getDirty())
{
_terrainTile->init(_terrainTile->getDirtyMask(), false);
}
// otherwise fallback to the Group::traverse()
_terrainTile->osg::Group::traverse(nv);

18
src/osgTerrain/TerrainTile.cpp
View File

@ -140,7 +140,7 @@ void TerrainTile::traverse(osg::NodeVisitor& nv)
}
}
init();
init(getDirtyMask(), false);
_hasBeenTraversal = true;
}
@ -164,7 +164,7 @@ void TerrainTile::traverse(osg::NodeVisitor& nv)
}
}
void TerrainTile::init()
void TerrainTile::init(int dirtyMask, bool assumeMultiThreaded)
{
if (!_terrainTechnique)
{
@ -179,9 +179,9 @@ void TerrainTile::init()
}
}
if (_terrainTechnique.valid() && getDirty())
if (_terrainTechnique.valid())
{
_terrainTechnique->init();
_terrainTechnique->init(dirtyMask, assumeMultiThreaded);
}
}
@ -218,6 +218,15 @@ void TerrainTile::setDirtyMask(int dirtyMask)
if (_dirtyMask!=NOT_DIRTY) dirtyDelta += 1;
#if 1
if (dirtyDelta>0)
{
// need to signal that we need an update
if (_terrain) _terrain->updateTerrainTileOnNextFrame(this);
}
#else
// setNumChildrenRequeingUpdateTraversal() isn't thread safe so should avoid using it.
if (dirtyDelta>0)
{
setNumChildrenRequiringUpdateTraversal(getNumChildrenRequiringUpdateTraversal()+1);
@ -226,6 +235,7 @@ void TerrainTile::setDirtyMask(int dirtyMask)
{
setNumChildrenRequiringUpdateTraversal(getNumChildrenRequiringUpdateTraversal()-1);
}
#endif
}

2
src/osgWrappers/deprecated-dotosg/osgTerrain/Terrain.cpp
View File

@ -13,7 +13,7 @@ REGISTER_DOTOSGWRAPPER(Terrain)
(
new osgTerrain::Terrain,
"Terrain",
"Object Node Terrain Group",
"Object Node Terrain CoordinateSystemNode Group",
&Terrain_readLocalData,
&Terrain_writeLocalData
);

2
src/osgWrappers/serializers/osgTerrain/Terrain.cpp
View File

@ -6,7 +6,7 @@
REGISTER_OBJECT_WRAPPER( osgTerrain_Terrain,
new osgTerrain::Terrain,
osgTerrain::Terrain,
"osg::Object osg::Node osg::Group osgTerrain::Terrain" )
"osg::Object osg::Node osg::CoordinateSystemNode osgTerrain::Terrain" )
{
ADD_FLOAT_SERIALIZER( SampleRatio, 1.0f ); // _sampleRatio
ADD_FLOAT_SERIALIZER( VerticalScale, 1.0f ); // _verticalScale