dd996a3289
forcing users to use osgDB::readRef*File() methods. The later is preferable as it closes a potential threading bug when using paging databases in conjunction
with the osgDB::Registry Object Cache. This threading bug occurs when one thread gets an object from the Cache via an osgDB::read*File() call where only
a pointer to the object is passed back, so taking a reference to the object is delayed till it gets reassigned to a ref_ptr<>, but at the same time another
thread calls a flush of the Object Cache deleting this object as it's referenceCount is now zero. Using osgDB::readREf*File() makes sure the a ref_ptr<> is
passed back and the referenceCount never goes to zero.
To ensure the OSG builds when OSG_PROVIDE_READFILE is to OFF the many cases of osgDB::read*File() usage had to be replaced with a ref_ptr<> osgDB::readRef*File()
usage. The avoid this change causing lots of other client code to be rewritten to handle the use of ref_ptr<> in place of C pointer I introduced a serious of
templte methods in various class to adapt ref_ptr<> to the underly C pointer to be passed to old OSG API's, example of this is found in include/osg/Group:
bool addChild(Node* child); // old method which can only be used with a Node*
tempalte<class T> bool addChild(const osg::ref_ptr<T>& child) { return addChild(child.get()); } // adapter template method
These changes together cover 149 modified files, so it's a large submission. This extent of changes are warrent to make use of the Object Cache
and multi-threaded loaded more robust.
git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@15164 16af8721-9629-0410-8352-f15c8da7e697
630 lines
22 KiB
C++
630 lines
22 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGTERRAIN_LAYER
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#define OSGTERRAIN_LAYER 1
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#include <osg/Image>
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#include <osg/Shape>
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#include <osg/Array>
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#include <osg/TransferFunction>
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#include <osgTerrain/Locator>
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#include <osgTerrain/ValidDataOperator>
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namespace osgTerrain {
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#define MAXIMUM_NUMBER_OF_LEVELS 30
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/** Extact the setname and filename from a compound string in the from set:setname:filename".
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* Returns a setname of "" when non set:setname: entry is present.*/
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extern OSGTERRAIN_EXPORT void extractSetNameAndFileName(const std::string& compoundstring, std::string& setname, std::string& filename);
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/** Create a compound string in the form set:setname:filename, or just filename if setname is "".*/
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extern OSGTERRAIN_EXPORT std::string createCompoundSetNameAndFileName(const std::string& setname, const std::string& filename);
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class OSGTERRAIN_EXPORT Layer : public osg::Object
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{
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public:
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Layer();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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Layer(const Layer&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Object(osgTerrain, Layer);
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/** Set the name of this layer. */
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void setSetName(const std::string& setname) { setName(setname); }
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/** Get the name of this layer. */
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const std::string& getSetName() const { return getName(); }
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/** Set the file name of the data associated with this layer. */
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virtual void setFileName(const std::string& filename) { _filename = filename; }
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/** Get the file name of the layer. */
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virtual const std::string& getFileName() const { return _filename; }
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/** Return the compound name of the layer in the form set::name::filename string.*/
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std::string getCompoundName() const { return createCompoundSetNameAndFileName(getName(), getFileName()); }
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void setLocator(Locator* locator) { _locator = locator; }
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template<class T> void setLocator(const osg::ref_ptr<T>& locator) { setLocator(locator.get()); }
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Locator* getLocator() { return _locator.get(); }
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const Locator* getLocator() const { return _locator.get(); }
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void setMinLevel(unsigned int minLevel) { _minLevel = minLevel; }
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unsigned int getMinLevel() const { return _minLevel; }
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void setMaxLevel(unsigned int maxLevel) { _maxLevel = maxLevel; }
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unsigned int getMaxLevel() const { return _maxLevel; }
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/** Set the data validation operator. */
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void setValidDataOperator(ValidDataOperator* validDataOp) { _validDataOperator = validDataOp; }
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/** Get the data validation operator. */
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ValidDataOperator* getValidDataOperator() { return _validDataOperator.get(); }
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/** Get the const data validation operator. */
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const ValidDataOperator* getValidDataOperator() const { return _validDataOperator.get(); }
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/** Get the number of columns. */
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virtual unsigned int getNumColumns() const { return 0; }
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/** Get the number of rows. */
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virtual unsigned int getNumRows() const { return 0; }
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void setDefaultValue(const osg::Vec4& value) { _defaultValue = value; }
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const osg::Vec4& getDefaultValue() const { return _defaultValue; }
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/** Set the minification texture filter to use when a texture is associated with this layer.*/
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void setMinFilter(osg::Texture::FilterMode filter) { _minFilter = filter; }
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/** Get the minification texture filter to use when a texture is associated with this layer.*/
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osg::Texture::FilterMode getMinFilter() const { return _minFilter; }
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/** Set the magnification texture filter to use when a texture is associated with this layer.*/
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void setMagFilter(osg::Texture::FilterMode filter) { _magFilter = filter; }
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/** Get the magnification texture filter to use when a texture is associated with this layer.*/
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osg::Texture::FilterMode getMagFilter() const { return _magFilter; }
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/** Return image associated with layer if supported. */
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virtual osg::Image* getImage() { return 0; }
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/** Return const image associated with layer if supported. */
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virtual const osg::Image* getImage() const { return 0; }
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virtual bool transform(float /*offset*/, float /*scale*/) { return false; }
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/**
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* Get the layer value at position i,j.
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* @param[in] i X-axis (or column) index.
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* @param[in] j Y-axis (or row) index.
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* @param[out] value Returned layer value.
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* @return true if value is valid, else false
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*/
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virtual bool getValue(unsigned int /*i*/, unsigned int /*j*/, float& /*value*/) const { return false; }
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virtual bool getValue(unsigned int /*i*/, unsigned int /*j*/, osg::Vec2& /*value*/) const { return false; }
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virtual bool getValue(unsigned int /*i*/, unsigned int /*j*/, osg::Vec3& /*value*/) const { return false; }
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virtual bool getValue(unsigned int /*i*/, unsigned int /*j*/, osg::Vec4& /*value*/) const { return false; }
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inline bool getValidValue(unsigned int i, unsigned int j, float& value) const
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{
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if (getValue(i,j,value)) return _validDataOperator.valid() ? (*_validDataOperator)(value) : true;
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return false;
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}
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inline bool getValidValue(unsigned int i, unsigned int j, osg::Vec2& value) const
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{
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if (getValue(i,j,value)) return _validDataOperator.valid() ? (*_validDataOperator)(value) : true;
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return false;
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}
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inline bool getValidValue(unsigned int i, unsigned int j, osg::Vec3& value) const
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{
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if (getValue(i,j,value)) return _validDataOperator.valid() ? (*_validDataOperator)(value) : true;
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return false;
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}
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inline bool getValidValue(unsigned int i, unsigned int j, osg::Vec4& value) const
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{
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if (getValue(i,j,value)) return _validDataOperator.valid() ? (*_validDataOperator)(value) : true;
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return false;
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}
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/**
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* Compute column,row indices from normalized coordinates.
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* @param[in] ndc_x Normalized X-axis coordinate.
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* @param[in] ndc_y Normalized Y-axis coordinate.
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* @param[out] i Returned X-axis (or column) index.
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* @param[out] j Returned Y-axis (or row) index.
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* @param[out] ir Returned X-axis fraction.
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* @param[out] jr Returned Y-axis fraction.
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*/
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inline void computeIndices(double ndc_x, double ndc_y, unsigned int& i, unsigned int& j, double& ir, double& jr)
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{
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ndc_x *= double(getNumColumns()-1);
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ndc_y *= double(getNumRows()-1);
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i = (unsigned int)(ndc_x);
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j = (unsigned int)(ndc_y);
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ir = ndc_x - double(i);
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jr = ndc_y - double(j);
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}
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/**
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* Calculate the interpolated layer value at the given normalized coordinates.
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* @param[in] ndc_x Normalized X-axis coordinate.
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* @param[in] ndc_y Normalized Y-axis coordinate.
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* @param[out] value Returned layer value.
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* @return true if value is valid, else false
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*/
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inline bool getInterpolatedValue(double ndc_x, double ndc_y, float& value)
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{
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unsigned int i,j;
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double ir, jr;
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computeIndices(ndc_x, ndc_y, i, j, ir, jr);
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value = 0.0f;
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double div = 0.0f;
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float v,r;
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r = (1.0f-ir)*(1.0f-jr);
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if (r>0.0 && getValue(i,j,v))
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{
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value += v*r;
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div += r;
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}
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r = (ir)*(1.0f-jr);
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if (r>0.0 && getValue(i+1,j,v))
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{
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value += v*r;
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div += r;
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}
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r = (ir)*(jr);
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if (r>0.0 && getValue(i+1,j+1,v))
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{
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value += v*r;
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div += r;
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}
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r = (1.0f-ir)*(jr);
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if (r>0.0 && getValue(i,j+1,v))
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{
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value += v*r;
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div += r;
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}
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if (div != 0.0)
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{
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value /= div;
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return true;
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}
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value = 0.0;
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return false;
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}
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inline bool getInterpolatedValidValue(double ndc_x, double ndc_y, float& value)
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{
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unsigned int i,j;
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double ir, jr;
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computeIndices(ndc_x, ndc_y, i, j, ir, jr);
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value = 0.0f;
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double div = 0.0f;
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float v,r;
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r = (1.0f-ir)*(1.0f-jr);
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if (r>0.0 && getValidValue(i,j,v))
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{
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value += v*r;
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div += r;
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}
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r = (ir)*(1.0f-jr);
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if (r>0.0 && getValidValue(i+1,j,v))
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{
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value += v*r;
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div += r;
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}
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r = (ir)*(jr);
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if (r>0.0 && getValidValue(i+1,j+1,v))
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{
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value += v*r;
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div += r;
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}
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r = (1.0f-ir)*(jr);
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if (r>0.0 && getValidValue(i,j+1,v))
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{
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value += v*r;
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div += r;
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}
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if (div != 0.0)
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{
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value /= div;
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return true;
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}
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value = 0.0;
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return false;
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}
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/** increment the modified count."*/
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virtual void dirty() {}
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/** Set the modified count value. */
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virtual void setModifiedCount(unsigned int /*value*/) {}
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/** Get modified count value. */
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virtual unsigned int getModifiedCount() const { return 0; }
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virtual osg::BoundingSphere computeBound(bool treatAsElevationLayer) const;
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protected:
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virtual ~Layer();
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std::string _filename;
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osg::ref_ptr<Locator> _locator;
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unsigned int _minLevel;
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unsigned int _maxLevel;
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osg::ref_ptr<ValidDataOperator> _validDataOperator;
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osg::Vec4 _defaultValue;
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osg::Texture::FilterMode _minFilter;
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osg::Texture::FilterMode _magFilter;
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};
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class OSGTERRAIN_EXPORT ImageLayer : public Layer
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{
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public:
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ImageLayer(osg::Image* image=0);
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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ImageLayer(const ImageLayer& imageLayer,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Object(osgTerrain, ImageLayer);
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void setFileName(const std::string& filename) { _filename = filename; if (_image.valid()) _image->setFileName(filename); }
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virtual const std::string& getFileName() const { return _image.get() ? _image->getFileName() : _filename; }
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virtual bool transform(float offset, float scale);
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void setImage(osg::Image* image);
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template<class T> void setImage(const osg::ref_ptr<T>& image) { return setImage(image.get()); }
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/** Return image associated with layer. */
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virtual osg::Image* getImage() { return _image.get(); }
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/** Return const image associated with layer. */
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virtual const osg::Image* getImage() const { return _image.get(); }
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virtual unsigned int getNumColumns() const { return _image.valid() ? _image->s() : 0; }
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virtual unsigned int getNumRows() const { return _image.valid() ? _image->t() : 0; }
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virtual bool getValue(unsigned int i, unsigned int j, float& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec2& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec3& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec4& value) const;
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virtual void dirty();
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virtual void setModifiedCount(unsigned int value);
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virtual unsigned int getModifiedCount() const;
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protected:
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virtual ~ImageLayer() {}
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osg::ref_ptr<osg::Image> _image;
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};
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class OSGTERRAIN_EXPORT ContourLayer : public Layer
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{
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public:
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ContourLayer(osg::TransferFunction1D* tf=0);
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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ContourLayer(const ContourLayer& tfLayer,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Object(osgTerrain, ContourLayer);
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virtual bool transform(float offset, float scale);
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void setTransferFunction(osg::TransferFunction1D* tf);
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template<class T> void setTransferFunction(const osg::ref_ptr<T>& tf) { return setTransferFunction(tf.get()); }
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osg::TransferFunction1D* getTransferFunction() { return _tf.get(); }
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const osg::TransferFunction1D* getTransferFunction() const { return _tf.get(); }
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/** Return image associated with layer. */
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virtual osg::Image* getImage() { return _tf.valid() ? _tf->getImage() : 0; }
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/** Return const image associated with layer. */
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virtual const osg::Image* getImage() const { return _tf.valid() ? _tf->getImage() : 0; }
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virtual unsigned int getNumColumns() const { return _tf.valid() ? _tf->getNumberImageCells() : 0; }
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virtual unsigned int getNumRows() const { return _tf.valid() ? 1 : 0; }
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virtual bool getValue(unsigned int i, unsigned int j, float& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec2& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec3& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec4& value) const;
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virtual void dirty();
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virtual void setModifiedCount(unsigned int value);
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virtual unsigned int getModifiedCount() const;
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protected:
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virtual ~ContourLayer() {}
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osg::ref_ptr<osg::TransferFunction1D> _tf;
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};
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class OSGTERRAIN_EXPORT HeightFieldLayer : public Layer
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{
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public:
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HeightFieldLayer(osg::HeightField* hf=0);
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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HeightFieldLayer(const HeightFieldLayer& hfLayer,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Object(osgTerrain, HeightFieldLayer);
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void setFileName(const std::string& filename) { _filename = filename; }
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virtual const std::string& getFileName() const { return _filename; }
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virtual bool transform(float offset, float scale);
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void setHeightField(osg::HeightField* hf);
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template<class T> void setHeightField(const osg::ref_ptr<T>& hf) { return setHeightField(hf.get()); }
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osg::HeightField* getHeightField() { return _heightField.get(); }
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const osg::HeightField* getHeightField() const { return _heightField.get(); }
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virtual unsigned int getNumColumns() const { return _heightField.valid() ? _heightField->getNumColumns() : 0; }
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virtual unsigned int getNumRows() const { return _heightField.valid() ? _heightField->getNumRows() : 0; }
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virtual bool getValue(unsigned int i, unsigned int j, float& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec2& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec3& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec4& value) const;
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virtual void dirty();
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virtual void setModifiedCount(unsigned int value);
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virtual unsigned int getModifiedCount() const;
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protected:
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virtual ~HeightFieldLayer() {}
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unsigned int _modifiedCount;
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osg::ref_ptr<osg::HeightField> _heightField;
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};
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class OSGTERRAIN_EXPORT ProxyLayer : public Layer
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{
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public:
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ProxyLayer();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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ProxyLayer(const ProxyLayer& proxyLayer,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Object(osgTerrain, ProxyLayer);
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/** Return image associated with layer if supported. */
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virtual osg::Image* getImage()
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{
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return _implementation.valid() ? _implementation->getImage() : 0;
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}
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/** Return const image associated with layer if supported. */
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virtual const osg::Image* getImage() const
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{
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return _implementation.valid() ? _implementation->getImage() : 0;
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}
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/** Set the implementation layer that does the actual work.*/
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void setImplementation(Layer* layer) { _implementation = layer; }
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/** Get the implementation layer that does the actual work.*/
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Layer* getImplementation() { return _implementation.get(); }
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/** Get the const implementation layer that does the actual work.*/
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const Layer* getImplementation() const { return _implementation.get(); }
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virtual void setFileName(const std::string& filename);
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virtual const std::string& getFileName() const { return _filename; }
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virtual unsigned int getNumColumns() const;
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virtual unsigned int getNumRows() const;
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virtual bool transform(float offset, float scale);
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virtual bool getValue(unsigned int i, unsigned int j, float& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec2& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec3& value) const;
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virtual bool getValue(unsigned int i, unsigned int j, osg::Vec4& value) const;
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virtual void dirty();
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virtual void setModifiedCount(unsigned int value);
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virtual unsigned int getModifiedCount() const;
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virtual osg::BoundingSphere computeBound(bool treatAsElevationLayer) const;
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protected:
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virtual ~ProxyLayer();
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osg::ref_ptr<Layer> _implementation;
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};
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class OSGTERRAIN_EXPORT CompositeLayer : public Layer
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{
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public:
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CompositeLayer();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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CompositeLayer(const CompositeLayer& compositeLayer,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Object(osgTerrain, CompositeLayer);
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void clear();
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/** Set the set name of layer 'i'. */
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void setSetName(unsigned int i, const std::string& setname) { _layers[i].setname = setname; if (_layers[i].layer.valid()) _layers[i].layer->setName(setname); }
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/** Get the set name of layer 'i'. */
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const std::string& getSetName(unsigned int i) const { return _layers[i].layer.valid() ? _layers[i].layer->getName() : _layers[i].setname; }
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/** Set the file name of the data associated with layer 'i'. */
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void setFileName(unsigned int i, const std::string& filename) { _layers[i].filename = filename; if (_layers[i].layer.valid()) _layers[i].layer->setFileName(filename); }
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/** Get the file name of the data associated with layer 'i'. */
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const std::string& getFileName(unsigned int i) const { return _layers[i].layer.valid() ? _layers[i].layer->getFileName() : _layers[i].filename; }
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void setCompoundName(unsigned int i, const std::string& compoundname);
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std::string getCompoundName(unsigned int i) const;
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void setLayer(unsigned int i, Layer* layer) { if (i>=_layers.size()) _layers.resize(i+1); _layers[i].layer = layer; }
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template<class T> void setLayer(unsigned int i, const osg::ref_ptr<T>& layer) { setLayer(i, layer.get()); }
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Layer* getLayer(unsigned int i) { return i<_layers.size() ? _layers[i].layer.get() : 0; }
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const Layer* getLayer(unsigned int i) const { return i<_layers.size() ? _layers[i].layer.get() : 0; }
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void addLayer(const std::string& compoundname);
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void addLayer(const std::string& setname, const std::string& filename);
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void addLayer(Layer* layer) { _layers.push_back(CompoundNameLayer(layer->getName(),layer->getFileName(),layer)); }
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template<class T> void addLayer(const osg::ref_ptr<T>& layer) { return addLayer(layer.get()); }
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void removeLayer(unsigned int i) { _layers.erase(_layers.begin()+i); }
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unsigned int getNumLayers() const { return static_cast<unsigned int>(_layers.size()); }
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protected:
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virtual ~CompositeLayer() {}
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struct CompoundNameLayer
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{
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CompoundNameLayer() {}
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CompoundNameLayer(const CompoundNameLayer& cnl):
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setname(cnl.setname),
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filename(cnl.filename),
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layer(cnl.layer) {}
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CompoundNameLayer(const std::string& sn, const std::string& fn, Layer* l):
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setname(sn),
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filename(fn),
|
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layer(l) {}
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|
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CompoundNameLayer& operator = (const CompoundNameLayer& cnl)
|
|
{
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if (&cnl==this) return *this;
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|
|
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setname = cnl.setname;
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|
filename = cnl.filename;
|
|
layer = cnl.layer;
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return *this;
|
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}
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|
|
|
std::string setname;
|
|
std::string filename;
|
|
osg::ref_ptr<Layer> layer;
|
|
};
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|
|
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typedef std::vector< CompoundNameLayer > Layers;
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|
|
|
Layers _layers;
|
|
};
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|
|
|
|
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class OSGTERRAIN_EXPORT SwitchLayer : public CompositeLayer
|
|
{
|
|
public:
|
|
|
|
SwitchLayer();
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
|
|
SwitchLayer(const SwitchLayer& switchLayer,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
|
|
|
|
META_Object(osgTerrain, SwitchLayer);
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|
|
|
void setActiveLayer(int i) { _activeLayer = i; }
|
|
int getActiveLayer() const { return _activeLayer; }
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|
|
|
/** Return image associated with layer if supported. */
|
|
virtual osg::Image* getImage()
|
|
{
|
|
if (_activeLayer < 0) return 0;
|
|
if (_activeLayer >= static_cast<int>(getNumLayers())) return 0;
|
|
return _layers[_activeLayer].layer->getImage();
|
|
}
|
|
|
|
/** Return const image associated with layer if supported. */
|
|
virtual const osg::Image* getImage() const
|
|
{
|
|
if (_activeLayer < 0) return 0;
|
|
if (_activeLayer >= static_cast<int>(getNumLayers())) return 0;
|
|
return _layers[_activeLayer].layer->getImage();
|
|
}
|
|
|
|
protected:
|
|
|
|
virtual ~SwitchLayer() {}
|
|
|
|
int _activeLayer;
|
|
};
|
|
|
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|
|
|
|
}
|
|
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|
#endif
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