366 lines
16 KiB
C++
366 lines
16 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 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 OSG_GEOMETRY
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#define OSG_GEOMETRY 1
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#include <osg/Drawable>
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#include <osg/Vec2>
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#include <osg/Vec3>
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#include <osg/Vec4>
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#include <osg/Array>
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#include <osg/PrimitiveSet>
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namespace osg {
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class SG_EXPORT Geometry : public Drawable
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{
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public:
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Geometry();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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Geometry(const Geometry& geometry,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
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virtual Object* cloneType() const { return new Geometry(); }
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virtual Object* clone(const CopyOp& copyop) const { return new Geometry(*this,copyop); }
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virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const Geometry*>(obj)!=NULL; }
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virtual const char* libraryName() const { return "osg"; }
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virtual const char* className() const { return "Geometry"; }
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virtual Geometry* asGeometry() { return this; }
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virtual const Geometry* asGeometry() const { return this; }
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enum AttributeBinding
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{
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BIND_OFF=0,
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BIND_OVERALL,
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BIND_PER_PRIMITIVE_SET,
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BIND_PER_PRIMITIVE,
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BIND_PER_VERTEX
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};
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template<typename T>
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struct AttributeData
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{
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AttributeData():
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_normalize(GL_FALSE),
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_binding(BIND_OFF),
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_offset(0) {}
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ref_ptr<T> _array;
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ref_ptr<IndexArray> _indices;
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AttributeBinding _binding;
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// only used in vertex attributes
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GLboolean _normalize;
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unsigned int _offset;
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};
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void setVertexArray(Array* array) { _vertexArray = array; dirtyDisplayList(); dirtyBound(); }
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Array* getVertexArray() { return _vertexArray.get(); }
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const Array* getVertexArray() const { return _vertexArray.get(); }
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void setVertexIndices(IndexArray* array) { _vertexIndices = array; computeFastPathsUsed(); dirtyDisplayList(); dirtyBound(); }
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IndexArray* getVertexIndices() { return _vertexIndices.get(); }
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const IndexArray* getVertexIndices() const { return _vertexIndices.get(); }
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void setNormalBinding(AttributeBinding ab) { _normalBinding = ab; dirtyDisplayList(); computeFastPathsUsed(); }
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AttributeBinding getNormalBinding() const { return _normalBinding; }
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void setNormalArray(Vec3Array* array) { _normalArray = array; if (!_normalArray.valid()) _normalBinding=BIND_OFF; computeFastPathsUsed(); dirtyDisplayList(); }
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Vec3Array* getNormalArray() { return _normalArray.get(); }
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const Vec3Array* getNormalArray() const { return _normalArray.get(); }
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void setNormalIndices(IndexArray* array) { _normalIndices = array; computeFastPathsUsed(); dirtyDisplayList(); }
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IndexArray* getNormalIndices() { return _normalIndices.get(); }
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const IndexArray* getNormalIndices() const { return _normalIndices.get(); }
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void setColorBinding(AttributeBinding ab) { _colorBinding = ab; computeFastPathsUsed();}
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AttributeBinding getColorBinding() const { return _colorBinding; }
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void setColorArray(Array* array) { _colorArray = array; if (!_colorArray.valid()) _colorBinding=BIND_OFF; computeFastPathsUsed(); dirtyDisplayList(); }
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Array* getColorArray() { return _colorArray.get(); }
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const Array* getColorArray() const { return _colorArray.get(); }
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void setColorIndices(IndexArray* array) { _colorIndices = array; computeFastPathsUsed(); dirtyDisplayList(); }
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IndexArray* getColorIndices() { return _colorIndices.get(); }
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const IndexArray* getColorIndices() const { return _colorIndices.get(); }
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void setSecondaryColorBinding(AttributeBinding ab) { _secondaryColorBinding = ab; computeFastPathsUsed();}
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AttributeBinding getSecondaryColorBinding() const { return _secondaryColorBinding; }
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void setSecondaryColorArray(Array* array) { _secondaryColorArray = array; if (!_secondaryColorArray.valid()) _secondaryColorBinding=BIND_OFF; computeFastPathsUsed(); dirtyDisplayList(); }
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Array* getSecondaryColorArray() { return _secondaryColorArray.get(); }
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const Array* getSecondaryColorArray() const { return _secondaryColorArray.get(); }
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void setSecondaryColorIndices(IndexArray* array) { _secondaryColorIndices = array; computeFastPathsUsed(); dirtyDisplayList(); }
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IndexArray* getSecondaryColorIndices() { return _secondaryColorIndices.get(); }
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const IndexArray* getSecondaryColorIndices() const { return _secondaryColorIndices.get(); }
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void setFogCoordBinding(AttributeBinding ab) { _fogCoordBinding = ab; computeFastPathsUsed();}
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AttributeBinding getFogCoordBinding() const { return _fogCoordBinding; }
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void setFogCoordArray(Array* array) { _fogCoordArray = array; if (!_fogCoordArray.valid()) _fogCoordBinding=BIND_OFF; dirtyDisplayList(); }
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Array* getFogCoordArray() { return _fogCoordArray.get(); }
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const Array* getFogCoordArray() const { return _fogCoordArray.get(); }
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void setFogCoordIndices(IndexArray* array) { _fogCoordIndices = array; dirtyDisplayList(); }
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IndexArray* getFogCoordIndices() { return _fogCoordIndices.get(); }
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const IndexArray* getFogCoordIndices() const { return _fogCoordIndices.get(); }
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struct ArrayPair
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{
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ArrayPair():
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offset(0) {}
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ArrayPair(const ArrayPair& rhs):
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first(rhs.first),
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second(rhs.second),
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offset(rhs.offset) {}
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ArrayPair& operator = (const ArrayPair& rhs)
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{
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first = rhs.first;
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second = rhs.second;
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offset = rhs.offset;
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return *this;
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}
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ref_ptr<Array> first;
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ref_ptr<IndexArray> second;
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mutable unsigned int offset;
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};
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typedef std::vector< ArrayPair > TexCoordArrayList;
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void setTexCoordArray(unsigned int unit,Array*);
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Array* getTexCoordArray(unsigned int unit);
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const Array* getTexCoordArray(unsigned int unit) const;
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void setTexCoordIndices(unsigned int unit,IndexArray*);
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IndexArray* getTexCoordIndices(unsigned int unit);
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const IndexArray* getTexCoordIndices(unsigned int unit) const;
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unsigned int getNumTexCoordArrays() const { return _texCoordList.size(); }
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TexCoordArrayList& getTexCoordArrayList() { return _texCoordList; }
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const TexCoordArrayList& getTexCoordArrayList() const { return _texCoordList; }
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#ifdef COMPILE_POSSIBLE_NEW_ARRAY_METHODS
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void setArray(AttributeType type, Array* array);
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Array* getArray(AttributeType type);
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const Array* getArray(AttributeType type) const;
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void setIndices(AttributeType type, IndexArray* indices);
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IndexArray* getIndices(AttributeType type);
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const IndexArray* getIndices(AttributeType type) const;
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void setNormalize(AttributeType type, GLboolean normalize);
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GLboolean getNormalize(AttributeType type) const;
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void setBinding(AttributeType type,AttributeBinding binding);
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AttributeBinding getBinding(AttributeType type) const;
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unsigned int getNumArrays() const { return _attributeList.size(); }
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AttributeData& getAttributeData(unsigned int type) { return _attributeList[type]; }
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const AttributeData& getAttributeData(unsigned int type) const { return _attributeList[type]; }
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typedef std::vector<AttributeData> AttributeList;
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void setAttributeList(AttributeList& al) { _attributeList = al; }
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AttributeList& getAttributeList() { return _attributeList; }
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const AttributeList& getAttributeList() const { return _attributeList; }
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#endif
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typedef std::pair< GLboolean, ArrayPair > VertexAttribNormArrayPair;
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typedef std::vector< VertexAttribNormArrayPair > VertexAttribArrayList;
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typedef std::vector< AttributeBinding > VertexAttribBindingList;
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void setVertexAttribArray(unsigned int index,bool normalize,Array* array,AttributeBinding ab=BIND_OFF);
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Array *getVertexAttribArray(unsigned int index);
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const Array *getVertexAttribArray(unsigned int index) const;
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bool getVertexAttribNormalize(unsigned int index, GLboolean &ret) const;
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bool getVertexAttribBinding(unsigned int index, AttributeBinding& ab) const;
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void setVertexAttribIndices(unsigned int index,IndexArray* array);
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IndexArray* getVertexAttribIndices(unsigned int index);
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const IndexArray* getVertexAttribIndices(unsigned int index) const;
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unsigned int getNumVertexAttribArrays() const { return _vertexAttribList.size(); }
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VertexAttribArrayList& getVertexAttribArrayList() { return _vertexAttribList; }
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const VertexAttribArrayList& getVertexAttribArrayList() const { return _vertexAttribList; }
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typedef std::vector< ref_ptr<PrimitiveSet> > PrimitiveSetList;
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void setPrimitiveSetList(const PrimitiveSetList& primitives) { _primitives = primitives; dirtyDisplayList(); dirtyBound(); }
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PrimitiveSetList& getPrimitiveSetList() { return _primitives; }
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const PrimitiveSetList& getPrimitiveSetList() const { return _primitives; }
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unsigned int getNumPrimitiveSets() const { return _primitives.size(); }
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PrimitiveSet* getPrimitiveSet(unsigned int pos) { return _primitives[pos].get(); }
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const PrimitiveSet* getPrimitiveSet(unsigned int pos) const { return _primitives[pos].get(); }
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/** Add a primitive set to the geometry.*/
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bool addPrimitiveSet(PrimitiveSet* primitiveset);
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/** Set a primitive set to the specified position in geometry's primitive set list.*/
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bool setPrimitiveSet(unsigned int i,PrimitiveSet* primitiveset);
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/** Insert a primitive set to the specified position in geometry's primitive set list.*/
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bool insertPrimitiveSet(unsigned int i,PrimitiveSet* primitiveset);
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/** Remove primitive set(s) from the specified position in geometry's primitive set list.*/
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bool removePrimitiveSet(unsigned int i,unsigned int numElementsToRemove=1);
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/** Get the index number of a primitive set, return a value between
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* 0 and getNumPrimitiveSet()-1 if found, if not found then return getNumPrimitiveSet().
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* When checking for a valid find value use if ((value=geoemtry->getPrimitiveSetIndex(primitive))!=geometry.getNumPrimitiveSet()) as*/
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unsigned int getPrimitiveSetIndex(const PrimitiveSet* primitiveset) const;
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/** Set whether fast paths should be used when supported.*/
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void setFastPathHint(bool on) { _fastPathHint = on; }
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/** Get whether fast paths should be used when supported.*/
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bool getFastPathHint() const { return _fastPathHint; }
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/** return true if OpenGL fast paths will be used with drawing this Geometry.
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* Fast paths use vertex arrays, and glDrawArrays/glDrawElements. Slow paths
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* use glBegin()/glVertex.../glEnd(). Use of per primitive bindings or per vertex indexed
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* arrays will drop the rendering path off the fast path.*/
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inline bool areFastPathsUsed() const { return _fastPath && _fastPathHint; }
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bool computeFastPathsUsed();
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bool verifyBindings() const;
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void computeCorrectBindingsAndArraySizes();
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bool suitableForOptimization() const;
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void copyToAndOptimize(Geometry& target);
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void computeInternalOptimizedGeometry();
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void removeInternalOptimizedGeometry() { _internalOptimizedGeometry = 0; }
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void setInternalOptimizedGeometry(osg::Geometry* geometry) { _internalOptimizedGeometry = geometry; }
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osg::Geometry* getInternalOptimizedGeometry() { return _internalOptimizedGeometry.get(); }
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const osg::Geometry* getInternalOptimizedGeometry() const { return _internalOptimizedGeometry.get(); }
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/** draw Geometry directly ignoring an OpenGL display list which could be attached.
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* This is the internal draw method which does the drawing itself,
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* and is the method to override when deriving from Geometry for user-drawn objects.
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*/
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virtual void drawImplementation(State& state) const;
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/** return true, osg::Geometry does support accept(AttributeFunctor&).*/
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virtual bool supports(AttributeFunctor&) const { return true; }
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/** accept an AttributeFunctor and call its methods to tell it about the interal attributes that this Drawable has.*/
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virtual void accept(AttributeFunctor& af);
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/** return true, osg::Geometry does support accept(ConstAttributeFunctor&).*/
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virtual bool supports(ConstAttributeFunctor&) const { return true; }
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/** accept an ConstAttributeFunctor and call its methods to tell it about the interal attributes that this Drawable has.*/
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virtual void accept(ConstAttributeFunctor& af) const;
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/** return true, osg::Geometry does support accept(PrimitiveFunctor&) .*/
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virtual bool supports(PrimitiveFunctor&) const { return true; }
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/** accept a PrimitiveFunctor and call its methods to tell it about the interal primitives that this Drawable has.*/
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virtual void accept(PrimitiveFunctor& pf) const;
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protected:
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Geometry& operator = (const Geometry&) { return *this;}
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virtual ~Geometry();
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PrimitiveSetList _primitives;
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#ifdef COMPILE_POSSIBLE_NEW_ARRAY_METHODS
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AttributeList _attributeList;
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#endif
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ref_ptr<Array> _vertexArray;
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ref_ptr<IndexArray> _vertexIndices;
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mutable unsigned int _vertexOffset;
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mutable AttributeBinding _normalBinding;
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ref_ptr<Vec3Array> _normalArray;
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ref_ptr<IndexArray> _normalIndices;
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mutable unsigned int _normalOffset;
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mutable AttributeBinding _colorBinding;
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ref_ptr<Array> _colorArray;
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ref_ptr<IndexArray> _colorIndices;
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mutable unsigned int _colorOffset;
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mutable AttributeBinding _secondaryColorBinding;
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ref_ptr<Array> _secondaryColorArray;
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ref_ptr<IndexArray> _secondaryColorIndices;
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mutable unsigned int _secondaryColorOffset;
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mutable AttributeBinding _fogCoordBinding;
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ref_ptr<Array> _fogCoordArray;
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ref_ptr<IndexArray> _fogCoordIndices;
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mutable unsigned int _fogCoordOffset;
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TexCoordArrayList _texCoordList;
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VertexAttribArrayList _vertexAttribList;
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mutable VertexAttribBindingList _vertexAttribBindingList;
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mutable bool _fastPath;
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bool _fastPathHint;
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ref_ptr<Geometry> _internalOptimizedGeometry;
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};
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/** Convenience function to be used for creating quad geometry with texture coords.
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* Tex coords go from bottom left (0,0) to top right (1,1).*/
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extern SG_EXPORT Geometry* createTexturedQuadGeometry(const Vec3& corner,const Vec3& widthVec,const Vec3& heightVec);
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}
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#endif
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