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Added first cut of new primtive shapes support.

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This commit is contained in:
Robert Osfield 2002-10-30 13:27:15 +00:00
parent 2e99fdacfc
commit da84f9b4aa
17 changed files with 1674 additions and 33 deletions
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4
Make/debugtests.bat
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@ -34,6 +34,10 @@ echo sgv Town.osg
sgv Town.osg sgv Town.osg
more memleaks.log more memleaks.log
echo osgshape
osgshape
more memleaks.log
echo osganimate echo osganimate
osganimate osganimate
more memleaks.log more memleaks.log

1
Make/makedirdefs
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@ -91,6 +91,7 @@ DEMOS_DIRS = \
osgscribe\ osgscribe\
osgstereoimage\ osgstereoimage\
osgsequence\ osgsequence\
osgshape\
osgteapot\ osgteapot\
osgtext\ osgtext\
osgtexture1D\ osgtexture1D\

3
Make/osgtests.bat
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@ -22,6 +22,9 @@ sgv cube_mapped_torus.osg
echo sgv Town.osg echo sgv Town.osg
sgv Town.osg sgv Town.osg
echo osgshape
osgshape
echo osganimate echo osganimate
osganimate osganimate

95
VisualStudio/Demos/osgshape/osgshape.dsp Executable file
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@ -0,0 +1,95 @@
# Microsoft Developer Studio Project File - Name="Demo osgshape" - Package Owner=<4>
# Microsoft Developer Studio Generated Build File, Format Version 6.00
# ** DO NOT EDIT **
# TARGTYPE "Win32 (x86) Console Application" 0x0103
CFG=Demo osgshape - 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 "osgshape.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 "osgshape.mak" CFG="Demo osgshape - Win32 Release"
!MESSAGE
!MESSAGE Possible choices for configuration are:
!MESSAGE
!MESSAGE "Demo osgshape - Win32 Release" (based on "Win32 (x86) Console Application")
!MESSAGE "Demo osgshape - 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 "$(CFG)" == "Demo osgshape - Win32 Release"
# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 0
# PROP BASE Output_Dir "Release"
# PROP BASE Intermediate_Dir "Release"
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 0
# PROP Output_Dir "Release"
# PROP Intermediate_Dir "Release"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
# ADD CPP /nologo /MD /W3 /GR /GX /O2 /I "../../../include" /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
# ADD BASE RSC /l 0x809 /d "NDEBUG"
# ADD RSC /l 0x809 /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
# ADD LINK32 /nologo /subsystem:console /pdb:none /machine:I386 /out:"../../../bin/osgshape.exe" /libpath:"../../../lib"
!ELSEIF "$(CFG)" == "Demo osgshape - 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 ""
# 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 /vd0 /GR /GX /Zi /Od /I "../../../include" /D "_CONSOLE" /D "_MBCS" /D "FL_DLL" /D "WIN32" /D "_DEBUG" /FR /YX /FD /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 /nologo /subsystem:console /debug /machine:I386 /nodefaultlib:"libcmt" /out:"../../../bin/osgshaped.exe" /pdbtype:sept /libpath:"../../../lib"
# SUBTRACT LINK32 /incremental:no
!ENDIF
# Begin Target
# Name "Demo osgshape - Win32 Release"
# Name "Demo osgshape - Win32 Debug"
# Begin Source File
SOURCE=..\..\..\src\Demos\osgshape\osgshape.cpp
# End Source File
# End Target
# Begin Group "Resource Files"
# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
# End Group
# End Project

27
VisualStudio/VisualStudio.dsw
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@ -381,6 +381,33 @@ Package=<4>
############################################################################### ###############################################################################
Project: "Demo osgshape"=.\Demos\osgshape\osgshape.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 osgGLUT
End Project Dependency
Begin Project Dependency
Project_Dep_Name Core osgUtil
End Project Dependency
}}}
###############################################################################
Project: "Demo osgcubemap"=.\Demos\osgcubemap\osgcubemap.dsp - Package Owner=<4> Project: "Demo osgcubemap"=.\Demos\osgcubemap\osgcubemap.dsp - Package Owner=<4>
Package=<5> Package=<5>

25
include/osg/CopyOp
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@ -20,6 +20,7 @@ class Node;
class Drawable; class Drawable;
class Array; class Array;
class PrimitiveSet; class PrimitiveSet;
class Shape;
/** Copy Op(erator) used to control the whether shallow or deep copy is used /** Copy Op(erator) used to control the whether shallow or deep copy is used
* during copy construction and clone operation.*/ * during copy construction and clone operation.*/
@ -30,17 +31,18 @@ class SG_EXPORT CopyOp
enum Options enum Options
{ {
SHALLOW_COPY = 0, SHALLOW_COPY = 0,
DEEP_COPY_OBJECTS = 1, DEEP_COPY_OBJECTS = 1,
DEEP_COPY_NODES = 2, DEEP_COPY_NODES = 2,
DEEP_COPY_DRAWABLES = 4, DEEP_COPY_DRAWABLES = 4,
DEEP_COPY_STATESETS = 8, DEEP_COPY_STATESETS = 8,
DEEP_COPY_STATEATTRIBUTES = 16, DEEP_COPY_STATEATTRIBUTES = 16,
DEEP_COPY_TEXTURES = 32, DEEP_COPY_TEXTURES = 32,
DEEP_COPY_IMAGES = 64, DEEP_COPY_IMAGES = 64,
DEEP_COPY_ARRAYS = 128, DEEP_COPY_ARRAYS = 128,
DEEP_COPY_PRIMITIVES = 256, DEEP_COPY_PRIMITIVES = 256,
DEEP_COPY_ALL = 0xffffffff DEEP_COPY_SHAPES = 512,
DEEP_COPY_ALL = 0xffffffff
}; };
typedef unsigned int CopyFlags; typedef unsigned int CopyFlags;
@ -58,6 +60,7 @@ class SG_EXPORT CopyOp
virtual Image* operator() (const Image* image) const; virtual Image* operator() (const Image* image) const;
virtual Array* operator() (const Array* array) const; virtual Array* operator() (const Array* array) const;
virtual PrimitiveSet* operator() (const PrimitiveSet* primitives) const; virtual PrimitiveSet* operator() (const PrimitiveSet* primitives) const;
virtual Shape* operator() (const Shape* shape) const;
protected: protected:

58
include/osg/Drawable
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@ -9,6 +9,7 @@
#include <osg/State> #include <osg/State>
#include <osg/Types> #include <osg/Types>
#include <osg/NodeVisitor> #include <osg/NodeVisitor>
#include <osg/Shape>
#include <vector> #include <vector>
#include <map> #include <map>
@ -20,7 +21,6 @@ class Vec2;
class Vec3; class Vec3;
class Vec4; class Vec4;
class UByte4; class UByte4;
class Node;
class Geometry; class Geometry;
// this is define to alter the way display lists are compiled inside the // this is define to alter the way display lists are compiled inside the
@ -57,6 +57,7 @@ class SG_EXPORT Drawable : public Object
* Equivalent to dynamic_cast<const Geometry*>(this).*/ * Equivalent to dynamic_cast<const Geometry*>(this).*/
virtual const Geometry* asGeometry() const { return 0; } virtual const Geometry* asGeometry() const { return 0; }
/** A vector of osg::Node pointers which is used to store the parent(s) of drawable.*/ /** A vector of osg::Node pointers which is used to store the parent(s) of drawable.*/
typedef std::vector<Node*> ParentList; typedef std::vector<Node*> ParentList;
@ -103,6 +104,36 @@ class SG_EXPORT Drawable : public Object
StateSet* getOrCreateStateSet(); StateSet* getOrCreateStateSet();
/** Dirty the bounding box, forcing a computeBound() on the next call
* to getBound(). Should be called in the internal geometry of the Drawable
* is modified.*/
void dirtyBound();
/** get bounding box of geoset.
* Note, now made virtual to make it possible to implement user-drawn
* objects albeit so what crudely, to be improved later.
*/
inline const BoundingBox& getBound() const
{
if( !_bbox_computed)
computeBound();
return _bbox;
}
/** Set the Shape of the drawable. The shape can be used to
* speed up collision detection or as a guide for produral
* geometry generation - see osg::ProduralGeometry.*/
inline void setShape(Shape* shape) { _shape = shape; }
/** Get the Shape of the Drawable.*/
inline Shape* getShape() { return _shape.get(); }
/** Get the const Shape of the const Drawable.*/
inline const Shape* getShape() const { return _shape.get(); }
/** Set the drawable to it can or cannot be used in conjunction with OpenGL /** Set the drawable to it can or cannot be used in conjunction with OpenGL
* display lists. With set to true, calls to Drawable::setUseDisplayList, * display lists. With set to true, calls to Drawable::setUseDisplayList,
* whereas when set to false, no display lists can be created and calls * whereas when set to false, no display lists can be created and calls
@ -126,23 +157,8 @@ class SG_EXPORT Drawable : public Object
/** Force a recompile on next draw() of any OpenGL display list associated with this geoset.*/ /** Force a recompile on next draw() of any OpenGL display list associated with this geoset.*/
void dirtyDisplayList(); void dirtyDisplayList();
/** Dirty the bounding box, forcing a computeBound() on the next call
* to getBound(). Should be called in the internal geometry of the Drawable
* is modified.*/
void dirtyBound();
/** get bounding box of geoset.
* Note, now made virtual to make it possible to implement user-drawn
* objects albeit so what crudely, to be improved later.
*/
inline const BoundingBox& getBound() const
{
if( !_bbox_computed)
computeBound();
return _bbox;
}
/** draw OpenGL primitives. /** draw OpenGL primitives.
* If the drawable has _useDisplayList set to true then use an OpenGL display * If the drawable has _useDisplayList set to true then use an OpenGL display
@ -315,15 +331,17 @@ class SG_EXPORT Drawable : public Object
ref_ptr<StateSet> _stateset; ref_ptr<StateSet> _stateset;
mutable BoundingBox _bbox;
mutable bool _bbox_computed;
ref_ptr<Shape> _shape;
bool _supportsDisplayList; bool _supportsDisplayList;
bool _useDisplayList; bool _useDisplayList;
typedef std::vector<uint> GLObjectList; typedef std::vector<uint> GLObjectList;
mutable GLObjectList _globjList; mutable GLObjectList _globjList;
mutable BoundingBox _bbox;
mutable bool _bbox_computed;
ref_ptr<AppCallback> _appCallback; ref_ptr<AppCallback> _appCallback;
ref_ptr<DrawCallback> _drawCallback; ref_ptr<DrawCallback> _drawCallback;
ref_ptr<CullCallback> _cullCallback; ref_ptr<CullCallback> _cullCallback;

150
include/osg/ProceduralGeometry Normal file
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@ -0,0 +1,150 @@
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
//Distributed under the terms of the GNU Library General Public License (LGPL)
//as published by the Free Software Foundation.
#ifndef OSG_ProceduralGeometry
#define OSG_ProceduralGeometry 1
#include <osg/Drawable>
#include <osg/Vec2>
#include <osg/Vec3>
#include <osg/Vec4>
#include <osg/Array>
#include <osg/PrimitiveSet>
namespace osg {
class TessellationHints : public Object
{
public:
TessellationHints():
_TessellationMode(USE_SHAPE_DEFAULTS),
_targetNumFaces(100),
_createFrontFace(true),
_createBackFace(false),
_createNormals(true),
_createTextureCoords(false),
_createTop(true),
_createBody(true),
_createBottom(true) {}
TessellationHints(const TessellationHints& tess, const CopyOp& copyop=CopyOp::SHALLOW_COPY):
Object(tess,copyop),
_TessellationMode(tess._TessellationMode),
_targetNumFaces(tess._targetNumFaces),
_createFrontFace(tess._createFrontFace),
_createBackFace(tess._createBackFace),
_createNormals(tess._createNormals),
_createTextureCoords(tess._createTextureCoords),
_createTop(tess._createTop),
_createBody(tess._createBody),
_createBottom(tess._createBottom) {}
META_Object(osg,TessellationHints)
enum TessellationMode
{
USE_SHAPE_DEFAULTS,
USE_TARGET_NUM_FACES
};
inline void setTessellationMode(TessellationMode mode) { _TessellationMode=mode; }
inline TessellationMode getTessellationMode() const { return _TessellationMode; }
inline void setTargetNumFaces(unsigned int target) { _targetNumFaces=target; }
inline unsigned int getTargetNumFaces() const { return _targetNumFaces; }
inline void setCreateFrontFace(bool on) { _createFrontFace=on; }
inline bool getCreateFrontFace() const { return _createFrontFace; }
inline void setCreateBackFace(bool on) { _createFrontFace=on; }
inline bool getCreateBackFace() const { return _createFrontFace; }
inline void setCreateNormals(bool on) { _createNormals=on; }
inline bool getCreateNormals() const { return _createNormals; }
inline void setCreateTextureCoords(bool on) { _createTextureCoords=on; }
inline bool getCreateTextureCoords() const { return _createTextureCoords; }
inline void setCreateTop(bool on) { _createTop=on; }
inline bool getCreateTop() const { return _createTop; }
inline void setCreateBody(bool on) { _createBody=on; }
inline bool getCreateBody() const { return _createBody; }
inline void setCreateBottom(bool on) { _createBottom=on; }
inline bool getCreateBottom() const { return _createBottom; }
protected:
~TessellationHints() {}
TessellationMode _TessellationMode;
unsigned int _targetNumFaces;
bool _createFrontFace;
bool _createBackFace;
bool _createNormals;
bool _createTextureCoords;
bool _createTop;
bool _createBody;
bool _createBottom;
};
class SG_EXPORT ProceduralGeometry : public Drawable
{
public:
ProceduralGeometry();
ProceduralGeometry(Shape* shape);
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
ProceduralGeometry(const ProceduralGeometry& pg,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
virtual Object* cloneType() const { return osgNew ProceduralGeometry(); }
virtual Object* clone(const CopyOp& copyop) const { return osgNew ProceduralGeometry(*this,copyop); }
virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const ProceduralGeometry*>(obj)!=NULL; }
virtual const char* libraryName() const { return "osg"; }
virtual const char* className() const { return "ProceduralGeometry"; }
void setTessellationHints(TessellationHints* hints) { _tessellationHints = hints; }
TessellationHints* getTessellationHints() { return _tessellationHints.get(); }
const TessellationHints* getTessellationHints() const { return _tessellationHints.get(); }
/** draw ProceduralGeometry directly ignoring an OpenGL display list which could be attached.
* This is the internal draw method which does the drawing itself,
* and is the method to override when deriving from ProceduralGeometry for user-drawn objects.
*/
virtual void drawImmediateMode(State& state);
/** accept an AttributeFunctor and call its methods to tell it about the interal attributes that this Drawable has.*/
virtual void accept(AttributeFunctor& af);
/** accept a PrimtiveFunctor and call its methods to tell it about the interal primtives that this Drawable has.*/
virtual void accept(PrimitiveFunctor& pf);
protected:
ProceduralGeometry& operator = (const ProceduralGeometry&) { return *this;}
virtual ~ProceduralGeometry();
virtual bool computeBound() const;
ref_ptr<TessellationHints> _tessellationHints;
};
}
#endif

517
include/osg/Shape Normal file
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@ -0,0 +1,517 @@
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
//Distributed under the terms of the GNU Library General Public License (LGPL)
//as published by the Free Software Foundation.
#ifndef OSG_SHAPE
#define OSG_SHAPE 1
#include <osg/Object>
#include <osg/Vec3>
#include <osg/Quat>
#include <osg/Plane>
#include <osg/Array>
namespace osg {
// forward decare visitors.
class ShapeVisitor;
class ConstShapeVisitor;
/** META_StateAttribute macro define the standard clone, isSameKindAs,
* className and getType methods.
* Use when subclassing from Object to make it more convinient to define
* the standard pure virtual methods which are required for all Object
* subclasses.*/
#define META_Shape(library,name) \
virtual osg::Object* cloneType() const { return osgNew name(); } \
virtual osg::Object* clone(const osg::CopyOp& copyop) const { return osgNew name (*this,copyop); } \
virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const name *>(obj)!=NULL; } \
virtual const char* libraryName() const { return #library; } \
virtual const char* className() const { return #name; } \
virtual void accept(osg::ShapeVisitor& sv) { sv.apply(*this); } \
virtual void accept(osg::ConstShapeVisitor& csv) const { csv.apply(*this); }
/** Base class for all shape types.
* Shapes are used to either for culling and collision detection or
* to define the geometric shape of procedurally generate Geometry.
*/
class SG_EXPORT Shape : public Object
{
public:
Shape() {}
Shape(const Shape& sa,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
Object(sa,copyop) {}
/** Clone the type of an attribute, with Object* return type.
Must be defined by derived classes.*/
virtual Object* cloneType() const = 0;
/** Clone an attribute, with Object* return type.
Must be defined by derived classes.*/
virtual Object* clone(const CopyOp&) const = 0;
/** return true if this and obj are of the same kind of object.*/
virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const Shape*>(obj)!=NULL; }
/** return the name of the attribute's library.*/
virtual const char* libraryName() const { return "osg"; }
/** return the name of the attribute's class type.*/
virtual const char* className() const { return "Shape"; }
/** accept a non const shape visitor which can be used on non const shape objects.
Must be defined by derived classes.*/
virtual void accept(ShapeVisitor&)=0;
/** accept a const shape visitor which can be used on const shape objects.
Must be defined by derived classes.*/
virtual void accept(ConstShapeVisitor&) const =0;
};
// forward declartions of Shape types.
class Sphere;
class Box;
class Cone;
class Cylinder;
class InfinitePlane;
class TriangleMesh;
class ConvexHull;
class HeightField;
class CompositeShape;
class ShapeVisitor
{
public:
ShapeVisitor() {}
virtual void apply(Sphere&) {}
virtual void apply(Box&) {}
virtual void apply(Cone&) {}
virtual void apply(Cylinder&) {}
virtual void apply(InfinitePlane&) {}
virtual void apply(TriangleMesh&) {}
virtual void apply(ConvexHull&) {}
virtual void apply(HeightField&) {}
virtual void apply(CompositeShape&) {}
};
class ConstShapeVisitor
{
public:
ConstShapeVisitor() {}
virtual void apply(const Sphere&) {}
virtual void apply(const Box&) {}
virtual void apply(const Cone&) {}
virtual void apply(const Cylinder&) {}
virtual void apply(const InfinitePlane&) {}
virtual void apply(const TriangleMesh&) {}
virtual void apply(const ConvexHull&) {}
virtual void apply(const HeightField&) {}
virtual void apply(const CompositeShape&) {}
};
class Sphere : public Shape
{
public:
Sphere():
_center(0.0f,0.0f,0.0f),
_radius(1.0f) {}
Sphere(const osg::Vec3& center,float radius):
_center(center),
_radius(radius) {}
Sphere(const Sphere& sphere,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
Shape(sphere,copyop),
_center(sphere._center),
_radius(sphere._radius) {}
META_Shape(osg, Sphere)
inline bool valid() const { return _radius>=0.0f; }
inline void set(const Vec3& center,float radius)
{
_center = center;
_radius = radius;
}
inline void setCenter(const Vec3& center) { _center = center; }
inline const Vec3& getCenter() const { return _center; }
inline void setRadius(float radius) { _radius = radius; }
inline float getRadius() const { return _radius; }
protected:
virtual ~Sphere() {}
Vec3 _center;
float _radius;
};
class Box : public Shape
{
public:
Box():
_center(0.0f,0.0f,0.0f),
_halfLengths(0.5f,0.5f,0.5f) {}
Box(const osg::Vec3& center,float width):
_center(center),
_halfLengths(width*0.5f,width*0.5f,width*0.5f) {}
Box(const osg::Vec3& center,float lengthX,float lengthY, float lengthZ):
_center(center),
_halfLengths(lengthX*0.5f,lengthY*0.5f,lengthZ*0.5f) {}
Box(const Box& box,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
Shape(box,copyop),
_center(box._center),
_halfLengths(box._halfLengths),
_rotation(box._rotation) {}
META_Shape(osg, Box)
inline bool valid() const { return _halfLengths.x()>=0.0f; }
inline void set(const Vec3& center,const Vec3& halfLengths)
{
_center = center;
_halfLengths = halfLengths;
}
inline void setCenter(const Vec3& center) { _center = center; }
inline const Vec3& getCenter() const { return _center; }
inline void setHalfLengths(const Vec3& halfLengths) { _halfLengths = halfLengths; }
inline const Vec3& getHalfLengths() const { return _halfLengths; }
inline void setRotation(const Quat& quat) { _rotation = quat; }
inline const Quat& getRotation() const { return _rotation; }
inline Matrix getRotationMatrix() const { Matrix matrix; _rotation.get(matrix); return matrix; }
inline bool zeroRotation() const { return _rotation.zeroRotation(); }
protected:
virtual ~Box() {}
Vec3 _center;
Vec3 _halfLengths;
Quat _rotation;
};
class Cone : public Shape
{
public:
Cone():
_center(0.0f,0.0f,0.0f),
_radius(1.0f),
_height(1.0f) {}
Cone(const osg::Vec3& center,float radius,float height):
_center(center),
_radius(radius),
_height(height) {}
Cone(const Cone& cone,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
Shape(cone,copyop),
_center(cone._center),
_radius(cone._radius),
_height(cone._height),
_rotation(cone._rotation) {}
META_Shape(osg, Cone)
inline bool valid() const { return _radius>=0.0f; }
inline void set(const Vec3& center,float radius, float height)
{
_center = center;
_radius = radius;
_height = height;
}
inline void setCenter(const Vec3& center) { _center = center; }
inline const Vec3& getCenter() const { return _center; }
inline void setRadius(float radius) { _radius = radius; }
inline float getRadius() const { return _radius; }
inline void setHeight(float height) { _height = height; }
inline float getHeight() const { return _height; }
inline void setRotation(const Quat& quat) { _rotation = quat; }
inline const Quat& getRotation() const { return _rotation; }
inline Matrix getRotationMatrix() const { Matrix matrix; _rotation.get(matrix); return matrix; }
inline bool zeroRotation() const { return _rotation.zeroRotation(); }
inline float getBaseOffsetFactor() const { return 0.25f; }
inline float getBaseOffset() const { return -getBaseOffsetFactor()*getHeight(); }
protected:
virtual ~Cone() {}
Vec3 _center;
float _radius;
float _height;
Quat _rotation;
};
class Cylinder : public Shape
{
public:
Cylinder():
_center(0.0f,0.0f,0.0f),
_radius(-1.0f),
_height(0.0f) {}
Cylinder(const osg::Vec3& center,float radius,float height):
_center(center),
_radius(radius),
_height(height) {}
Cylinder(const Cylinder& cylinder,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
Shape(cylinder,copyop),
_center(cylinder._center),
_radius(cylinder._radius),
_height(cylinder._height),
_rotation(cylinder._rotation) {}
META_Shape(osg, Cylinder)
inline bool valid() const { return _radius>=0.0f; }
inline void set(const Vec3& center,float radius, float height)
{
_center = center;
_radius = radius;
_height = height;
}
inline void setCenter(const Vec3& center) { _center = center; }
inline const Vec3& getCenter() const { return _center; }
inline void setRadius(float radius) { _radius = radius; }
inline float getRadius() const { return _radius; }
inline void setHeight(float height) { _height = height; }
inline float getHeight() const { return _height; }
inline void setRotation(const Quat& quat) { _rotation = quat; }
inline const Quat& getRotation() const { return _rotation; }
inline Matrix getRotationMatrix() const { Matrix matrix; _rotation.get(matrix); return matrix; }
bool zeroRotation() const { return _rotation.zeroRotation(); }
protected:
virtual ~Cylinder() {}
Vec3 _center;
float _radius;
float _height;
Quat _rotation;
};
class InfinitePlane : public Shape, public Plane
{
public:
};
class TriangleMesh : public Shape
{
public:
TriangleMesh() {}
TriangleMesh(const TriangleMesh& mesh,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
Shape(mesh,copyop),
_vertices(mesh._vertices),
_indices(mesh._indices) {}
META_Shape(osg, TriangleMesh)
void setVertices(Vec3Array* vertices) { _vertices = vertices; }
Vec3Array* getVertices() { return _vertices.get(); }
const Vec3Array* getVertices() const { return _vertices.get(); }
void setIndices(IndexArray* indices) { _indices = indices; }
IndexArray* getIndices() { return _indices.get(); }
const IndexArray* getIndices() const { return _indices.get(); }
protected:
~TriangleMesh() {}
ref_ptr<Vec3Array> _vertices;
ref_ptr<IndexArray> _indices;
};
class ConvexHull : public TriangleMesh
{
public:
ConvexHull() {}
ConvexHull(const ConvexHull& hull,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
TriangleMesh(hull,copyop) {}
META_Shape(osg, TriangleMesh)
protected:
~ConvexHull() {}
};
class HeightField : public Shape
{
public:
HeightField() {}
HeightField(const HeightField& mesh,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
Shape(mesh,copyop),
_zeroRotation(true),
_columns(0),
_rows(0),
_origin(0.0f,0.0f,0.0f),
_dx(1.0f),
_dy(1.0f) {}
virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const HeightField*>(obj)!=NULL; }
virtual const char* libraryName() const { return "osg"; }
virtual const char* className() const { return "HeightFiled"; }
virtual void accept(osg::ShapeVisitor& sv) { sv.apply(*this); }
virtual void accept(osg::ConstShapeVisitor& csv) const { csv.apply(*this); }
virtual void setNumColumnsAndRows(unsigned int col,unsigned int rows) = 0;
inline unsigned int getNumColumns() const { return _columns; }
inline unsigned int getNumRows() const { return _rows; }
inline void setOrigin(const osg::Vec3& origin) { _origin = origin; }
inline const osg::Vec3& getOrigin() const { return _origin; }
inline void setXInterval(float dx) { _dx = dx; }
inline float getXInterval() const { return _dx; }
inline void setYInterval(float dy) { _dy = dy; }
inline float getYInterval() const { return _dy; }
virtual void setHeight(unsigned int c,unsigned int r) const = 0;
virtual float getHeight(unsigned int c,unsigned int r) const = 0;
virtual void setNormal(unsigned int c,unsigned int r,const osg::Vec3& normal) const = 0;
virtual Vec3 getNormal(unsigned int c,unsigned int r) const = 0;
inline Vec3 getVertex(unsigned int c,unsigned int r) const
{
return Vec3(_origin.x()+_dx*(float)c,
_origin.y()+_dy*(float)r,
_origin.z()+getHeight(c,r));
}
inline void setRotation(const Quat& quat) { _rotation = quat; }
inline const Quat& getRotation() const { return _rotation; }
inline Matrix getRotationMatrix() const { Matrix matrix; _rotation.get(matrix); return matrix; }
inline bool zeroRotation() const { return _rotation.zeroRotation(); }
protected:
~HeightField() {}
bool _zeroRotation;
unsigned int _columns,_rows;
osg::Vec3 _origin;
float _dx;
float _dy;
Quat _rotation;
};
class CompositeShape : public Shape
{
public:
typedef std::vector< ref_ptr<Shape> > ChildList;
CompositeShape();
CompositeShape(const CompositeShape& cs,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
Shape(cs,copyop),
_children(cs._children) {}
META_Shape(osg, CompositeShape)
/** Set the shape that encloses all of the children.*/
void setShape(Shape* shape) { _shape = shape; }
/** Get the shape that encloses all of the children.*/
Shape* getShape() { return _shape.get(); }
/** Get the const shape that encloses all of the children.*/
const Shape* getShape() const { return _shape.get(); }
/** Get the number of children of this composite shape.*/
unsigned int getNumChildren() const { return _children.size(); }
/** Get a child.*/
Shape* getChild(unsigned int i) { return _children[i].get(); }
/** Get a const child.*/
const Shape* getChild(unsigned int i) const { return _children[i].get(); }
/** Add a child to the list.*/
void addChild(Shape* shape) { _children.push_back(shape); }
/** remove a child from the list.*/
void removeChild(unsigned int i) { _children.erase(_children.begin()+i); }
/** find the index number of child, if child is not found then it returns getNumChildren(),
* so should be used in similar sytle of STL's result!=end().*/
unsigned int findChildNo(Shape* shape);
protected:
~CompositeShape() {}
ref_ptr<Shape> _shape;
ChildList _children;
};
}
#endif

15
src/Demos/osgshape/Makefile Normal file
View File

@ -0,0 +1,15 @@
TOPDIR = ../../..
include $(TOPDIR)/Make/makedefs
CXXFILES =\
osgshape.cpp\
LIBS += $(OSG_LIBS) $(GLUT_LIB) $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
INSTFILES = \
$(CXXFILES)\
Makefile.inst=Makefile
EXEC = osgshape
include $(TOPDIR)/Make/makerules

11
src/Demos/osgshape/Makefile.inst Normal file
View File

@ -0,0 +1,11 @@
TOPDIR = ../..
include $(TOPDIR)/Make/makedefs
CXXFILES =\
osgshape.cpp\
LIBS += $(OSG_LIBS) $(GLUT_LIB) $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
EXEC = osgshape
include $(TOPDIR)/Make/makerules

78
src/Demos/osgshape/osgshape.cpp Normal file
View File

@ -0,0 +1,78 @@
#include <osg/Geode>
#include <osg/ProceduralGeometry>
#include <osg/Material>
#include <osg/Texture2D>
#include <osgGA/TrackballManipulator>
#include <osgGLUT/Viewer>
#include <osgGLUT/glut>
#include <osgDB/ReadFile>
#include <osg/Math>
osg::Geode* createShapes()
{
osg::Geode* geode = osgNew osg::Geode();
// ---------------------------------------
// Set up a StateSet to make the cube red
// ---------------------------------------
osg::StateSet* stateset = osgNew osg::StateSet();
osg::Image* image = osgDB::readImageFile("lz.rgb");
if (image)
{
osg::Texture2D* texture = osgNew osg::Texture2D;
texture->setImage(image);
stateset->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
}
geode->setStateSet( stateset );
float radius = 0.8f;
float height = 1.0f;
geode->addDrawable(new osg::ProceduralGeometry(osgNew osg::Sphere(osg::Vec3(0.0f,0.0f,0.0f),radius)));
geode->addDrawable(new osg::ProceduralGeometry(osgNew osg::Box(osg::Vec3(2.0f,0.0f,0.0f),2*radius)));
geode->addDrawable(new osg::ProceduralGeometry(osgNew osg::Cone(osg::Vec3(4.0f,0.0f,0.0f),radius,height)));
geode->addDrawable(new osg::ProceduralGeometry(osgNew osg::Cylinder(osg::Vec3(6.0f,0.0f,0.0f),radius,height)));
return geode;
}
int main( int argc, char **argv )
{
glutInit( &argc, argv );
// create the commandline args.
std::vector<std::string> commandLine;
for(int i=1;i<argc;++i) commandLine.push_back(argv[i]);
// create the viewer and the model to it.
osgGLUT::Viewer viewer;
viewer.setWindowTitle(argv[0]);
// configure the viewer from the commandline arguments, and eat any
// parameters that have been matched.
viewer.readCommandLine(commandLine);
osg::Node* node = createShapes();
// add model to viewer.
viewer.addViewport( node );
// register trackball maniupulators.
viewer.registerCameraManipulator(osgNew osgGA::TrackballManipulator);
viewer.open();
viewer.run();
return 0;
}

10
src/osg/CopyOp.cpp
View File

@ -5,6 +5,7 @@
#include <osg/Drawable> #include <osg/Drawable>
#include <osg/Array> #include <osg/Array>
#include <osg/PrimitiveSet> #include <osg/PrimitiveSet>
#include <osg/Shape>
using namespace osg; using namespace osg;
@ -92,3 +93,12 @@ PrimitiveSet* CopyOp::operator() (const PrimitiveSet* primitive) const
else else
return const_cast<PrimitiveSet*>(primitive); return const_cast<PrimitiveSet*>(primitive);
} }
Shape* CopyOp::operator() (const Shape* shape) const
{
if (shape && _flags&DEEP_COPY_SHAPES)
return dynamic_cast<Shape*>(shape->clone(*this));
else
return const_cast<Shape*>(shape);
}

5
src/osg/Drawable.cpp
View File

@ -33,11 +33,12 @@ Drawable::Drawable(const Drawable& drawable,const CopyOp& copyop):
Object(drawable,copyop), Object(drawable,copyop),
_parents(), // leave empty as parentList is managed by Geode _parents(), // leave empty as parentList is managed by Geode
_stateset(copyop(drawable._stateset.get())), _stateset(copyop(drawable._stateset.get())),
_bbox(drawable._bbox),
_bbox_computed(drawable._bbox_computed),
_shape(copyop(drawable._shape.get())),
_supportsDisplayList(drawable._supportsDisplayList), _supportsDisplayList(drawable._supportsDisplayList),
_useDisplayList(drawable._useDisplayList), _useDisplayList(drawable._useDisplayList),
_globjList(drawable._globjList), _globjList(drawable._globjList),
_bbox(drawable._bbox),
_bbox_computed(drawable._bbox_computed),
_drawCallback(drawable._drawCallback), _drawCallback(drawable._drawCallback),
_cullCallback(drawable._cullCallback) _cullCallback(drawable._cullCallback)
{} {}

2
src/osg/Makefile
View File

@ -62,11 +62,13 @@ CXXFILES =\
PolygonStipple.cpp\ PolygonStipple.cpp\
PositionAttitudeTransform.cpp\ PositionAttitudeTransform.cpp\
PrimitiveSet.cpp\ PrimitiveSet.cpp\
ProceduralGeometry.cpp\
Projection.cpp\ Projection.cpp\
Quat.cpp\ Quat.cpp\
Sequence.cpp\ Sequence.cpp\
ShadeModel.cpp\ ShadeModel.cpp\
ShadowVolumeOccluder.cpp\ ShadowVolumeOccluder.cpp\
Shape.cpp\
State.cpp\ State.cpp\
StateSet.cpp\ StateSet.cpp\
Stencil.cpp\ Stencil.cpp\

701
src/osg/ProceduralGeometry.cpp Normal file
View File

@ -0,0 +1,701 @@
#include <osg/ProceduralGeometry>
#include <osg/GL>
using namespace osg;
///////////////////////////////////////////////////////////////////////////////
//
// draw shape
//
class DrawShapeVisitor : public ConstShapeVisitor
{
public:
DrawShapeVisitor(State& state,TessellationHints* hints):
_state(state),
_hints(hints) {}
virtual void apply(const Sphere&);
virtual void apply(const Box&);
virtual void apply(const Cone&);
virtual void apply(const Cylinder&);
virtual void apply(const InfinitePlane&);
virtual void apply(const TriangleMesh&);
virtual void apply(const ConvexHull&);
virtual void apply(const HeightField&);
virtual void apply(const CompositeShape&);
State& _state;
TessellationHints* _hints;
};
void DrawShapeVisitor::apply(const Sphere& sphere)
{
glPushMatrix();
glTranslatef(sphere.getCenter().x(),sphere.getCenter().y(),sphere.getCenter().z());
unsigned int numSegments = 40;
unsigned int numRows = 20;
float lDelta = osg::PI/(float)numRows;
float vDelta = 1.0f/(float)numRows;
float angleDelta = osg::PI*2.0f/(float)numSegments;
float texCoordHorzDelta = 1.0f/(float)numSegments;
float lBase=-osg::PI*0.5f;
float rBase=0.0f;
float zBase=-sphere.getRadius();
float vBase=0.0f;
float nzBase=-1.0f;
float nRatioBase=0.0f;
for(unsigned int rowi=0;
rowi<numRows;
++rowi)
{
float lTop = lBase+lDelta;
float rTop = cosf(lTop)*sphere.getRadius();
float zTop = sinf(lTop)*sphere.getRadius();
float vTop = vBase+vDelta;
float nzTop= sinf(lTop);
float nRatioTop= cosf(lTop);
glBegin(GL_QUAD_STRIP);
float angle = 0.0f;
float texCoord = 0.0f;
for(unsigned int topi=0;
topi<numSegments;
++topi,angle+=angleDelta,texCoord+=texCoordHorzDelta)
{
float c = cosf(angle);
float s = sinf(angle);
glNormal3f(c*nRatioTop,s*nRatioTop,nzTop);
glTexCoord2f(texCoord,vTop);
glVertex3f(c*rTop,s*rTop,zTop);
glNormal3f(c*nRatioBase,s*nRatioBase,nzBase);
glTexCoord2f(texCoord,vBase);
glVertex3f(c*rBase,s*rBase,zBase);
}
// do last point by hand to ensure no round off errors.
glNormal3f(nRatioTop,0.0f,nzTop);
glTexCoord2f(1.0f,vTop);
glVertex3f(rTop,0.0f,zTop);
glNormal3f(nRatioBase,0.0f,nzBase);
glTexCoord2f(1.0f,vBase);
glVertex3f(rBase,0.0f,zBase);
glEnd();
lBase=lTop;
rBase=rTop;
zBase=zTop;
vBase=vTop;
nzBase=nzTop;
nRatioBase=nRatioTop;
}
glPopMatrix();
}
void DrawShapeVisitor::apply(const Box& box)
{
float dx = box.getHalfLengths().x();
float dy = box.getHalfLengths().y();
float dz = box.getHalfLengths().z();
glPushMatrix();
glTranslatef(box.getCenter().x(),box.getCenter().y(),box.getCenter().z());
if (!box.zeroRotation())
{
Matrix rotation(box.getRotationMatrix());
glMultMatrixf(rotation.ptr());
}
glBegin(GL_QUADS);
// -ve y plane
glNormal3f(0.0f,-1.0f,0.0f);
glTexCoord2f(0.0f,1.0f);
glVertex3f(-dx,-dy,dz);
glTexCoord2f(0.0f,0.0f);
glVertex3f(-dx,-dy,-dz);
glTexCoord2f(1.0f,0.0f);
glVertex3f(dx,-dy,-dz);
glTexCoord2f(1.0f,1.0f);
glVertex3f(dx,-dy,dz);
// +ve y plane
glNormal3f(0.0f,1.0f,0.0f);
glTexCoord2f(0.0f,1.0f);
glVertex3f(dx,dy,dz);
glTexCoord2f(0.0f,0.0f);
glVertex3f(dx,dy,-dz);
glTexCoord2f(1.0f,0.0f);
glVertex3f(-dx,dy,-dz);
glTexCoord2f(1.0f,1.0f);
glVertex3f(-dx,dy,dz);
// +ve x plane
glNormal3f(1.0f,0.0f,0.0f);
glTexCoord2f(0.0f,1.0f);
glVertex3f(dx,-dy,dz);
glTexCoord2f(0.0f,0.0f);
glVertex3f(dx,-dy,-dz);
glTexCoord2f(1.0f,0.0f);
glVertex3f(dx,dy,-dz);
glTexCoord2f(1.0f,1.0f);
glVertex3f(dx,dy,dz);
// -ve x plane
glNormal3f(-1.0f,0.0f,0.0f);
glTexCoord2f(0.0f,1.0f);
glVertex3f(-dx,dy,dz);
glTexCoord2f(0.0f,0.0f);
glVertex3f(-dx,dy,-dz);
glTexCoord2f(1.0f,0.0f);
glVertex3f(-dx,-dy,-dz);
glTexCoord2f(1.0f,1.0f);
glVertex3f(-dx,-dy,dz);
// +ve z plane
glNormal3f(0.0f,0.0f,1.0f);
glTexCoord2f(0.0f,1.0f);
glVertex3f(-dx,dy,dz);
glTexCoord2f(0.0f,0.0f);
glVertex3f(-dx,-dy,dz);
glTexCoord2f(1.0f,0.0f);
glVertex3f(dx,-dy,dz);
glTexCoord2f(1.0f,1.0f);
glVertex3f(dx,dy,dz);
// -ve z plane
glNormal3f(0.0f,0.0f,-1.0f);
glTexCoord2f(0.0f,1.0f);
glVertex3f(dx,dy,-dz);
glTexCoord2f(0.0f,0.0f);
glVertex3f(dx,-dy,-dz);
glTexCoord2f(1.0f,0.0f);
glVertex3f(-dx,-dy,-dz);
glTexCoord2f(1.0f,1.0f);
glVertex3f(-dx,dy,-dz);
glEnd();
glPopMatrix();
}
void DrawShapeVisitor::apply(const Cone& cone)
{
glPushMatrix();
glTranslatef(cone.getCenter().x(),cone.getCenter().y(),cone.getCenter().z());
if (!cone.zeroRotation())
{
Matrix rotation(cone.getRotationMatrix());
glMultMatrixf(rotation.ptr());
}
unsigned int numSegments = 40;
unsigned int numRows = 10;
float r = cone.getRadius();
float h = cone.getHeight();
float normalz = r/(sqrtf(r*r+h*h));
float normalRatio = 1.0f/(sqrtf(1.0f+normalz*normalz));
normalz *= normalRatio;
float angleDelta = 2.0f*osg::PI/(float)numSegments;
float texCoordHorzDelta = 1.0/(float)numSegments;
float texCoordRowDelta = 1.0/(float)numRows;
float hDelta = cone.getHeight()/(float)numRows;
float rDelta = cone.getRadius()/(float)numRows;
float topz=cone.getHeight()+cone.getBaseOffset();
float topr=0.0f;
float topv=1.0f;
float basez=topz-hDelta;
float baser=rDelta;
float basev=topv-texCoordRowDelta;
float angle;
float texCoord;
for(unsigned int rowi=0;
rowi<numRows;
++rowi,topz=basez, basez-=hDelta, topr=baser, baser+=rDelta, topv=basev, basev-=texCoordRowDelta)
{
// we can't use a fan for the cone top
// since we need different normals at the top
// for each face..
glBegin(GL_QUAD_STRIP);
angle = 0.0f;
texCoord = 0.0f;
for(unsigned int topi=0;
topi<numSegments;
++topi,angle+=angleDelta,texCoord+=texCoordHorzDelta)
{
float c = cosf(angle);
float s = sinf(angle);
glNormal3f(c*normalRatio,s*normalRatio,normalz);
glTexCoord2f(texCoord,topv);
glVertex3f(c*topr,s*topr,topz);
glTexCoord2f(texCoord,basev);
glVertex3f(c*baser,s*baser,basez);
}
// do last point by hand to ensure no round off errors.
glNormal3f(normalRatio,0.0f,normalz);
glTexCoord2f(1.0f,topv);
glVertex3f(topr,0.0f,topz);
glTexCoord2f(1.0f,basev);
glVertex3f(baser,0.0f,basez);
glEnd();
}
// we can't use a fan for the cone top
// since we need different normals at the top
// for each face..
glBegin(GL_TRIANGLE_FAN);
angle = osg::PI*2.0f;
texCoord = 1.0f;
basez = cone.getBaseOffset();
glNormal3f(0.0f,0.0f,-1.0f);
glTexCoord2f(0.5f,0.5f);
glVertex3f(0.0f,0.0f,basez);
for(unsigned int bottomi=0;
bottomi<numSegments;
++bottomi,angle-=angleDelta,texCoord-=texCoordHorzDelta)
{
float c = cosf(angle);
float s = sinf(angle);
glTexCoord2f(c*0.5f+0.5f,s*0.5f+0.5f);
glVertex3f(c*r,s*r,basez);
}
glTexCoord2f(1.0f,0.0f);
glVertex3f(r,0.0f,basez);
glEnd();
glPopMatrix();
}
void DrawShapeVisitor::apply(const Cylinder& cylinder)
{
glPushMatrix();
glTranslatef(cylinder.getCenter().x(),cylinder.getCenter().y(),cylinder.getCenter().z());
if (!cylinder.zeroRotation())
{
Matrix rotation(cylinder.getRotationMatrix());
glMultMatrixf(rotation.ptr());
}
unsigned int numSegments = 40;
float angleDelta = 2.0f*osg::PI/(float)numSegments;
float texCoordDelta = 1.0/(float)numSegments;
osg::Vec3 top(0.0f,0.0f,cylinder.getHeight());
float r = cylinder.getRadius();
float h = cylinder.getHeight();
float basez = -h*0.5f;
float topz = h*0.5f;
// cylinder body
glBegin(GL_QUAD_STRIP);
float angle = 0.0f;
float texCoord = 0.0f;
for(unsigned int bodyi=0;
bodyi<numSegments;
++bodyi,angle+=angleDelta,texCoord+=texCoordDelta)
{
float c = cosf(angle);
float s = sinf(angle);
glNormal3f(c,s,0.0f);
glTexCoord2f(texCoord,1.0f);
glVertex3f(c*r,s*r,topz);
glTexCoord2f(texCoord,0.0f);
glVertex3f(c*r,s*r,basez);
}
// do last point by hand to ensure no round off errors.
glNormal3f(1.0f,0.0f,0.0f);
glTexCoord2f(1.0f,1.0f);
glVertex3f(r,0.0f,topz);
glTexCoord2f(1.0f,0.0f);
glVertex3f(r,0.0f,basez);
glEnd();
// cylinder top
glBegin(GL_TRIANGLE_FAN);
glNormal3f(0.0f,0.0f,1.0f);
glTexCoord2f(0.5f,0.5f);
glVertex3f(0.0f,0.0f,topz);
angle = 0.0f;
texCoord = 0.0f;
for(unsigned int topi=0;
topi<numSegments;
++topi,angle+=angleDelta,texCoord+=texCoordDelta)
{
float c = cosf(angle);
float s = sinf(angle);
glTexCoord2f(c*0.5f+0.5f,s*0.5f+0.5f);
glVertex3f(c*r,s*r,topz);
}
glTexCoord2f(1.0f,0.0f);
glVertex3f(r,0.0f,topz);
glEnd();
// cylinder bottom
glBegin(GL_TRIANGLE_FAN);
glNormal3f(0.0f,0.0f,-1.0f);
glTexCoord2f(0.5f,0.5f);
glVertex3f(0.0f,0.0f,basez);
angle = osg::PI*2.0f;
texCoord = 1.0f;
for(unsigned int bottomi=0;
bottomi<numSegments;
++bottomi,angle-=angleDelta,texCoord-=texCoordDelta)
{
float c = cosf(angle);
float s = sinf(angle);
glTexCoord2f(c*0.5f+0.5f,s*0.5f+0.5f);
glVertex3f(c*r,s*r,basez);
}
glTexCoord2f(0.0f,0.0f);
glVertex3f(r,0.0f,basez);
glEnd();
glPopMatrix();
}
void DrawShapeVisitor::apply(const InfinitePlane& plane)
{
std::cout << "draw a Plane ("<<plane<<") "<<std::endl;
}
void DrawShapeVisitor::apply(const TriangleMesh& mesh)
{
std::cout << "draw a mesh "<<&mesh<<std::endl;
}
void DrawShapeVisitor::apply(const ConvexHull& hull)
{
std::cout << "draw a hull "<<&hull<<std::endl;
}
void DrawShapeVisitor::apply(const HeightField& field)
{
std::cout << "draw a field "<<&field<<std::endl;
}
void DrawShapeVisitor::apply(const CompositeShape& composite)
{
std::cout << "draw a composite "<<&composite<<std::endl;
}
///////////////////////////////////////////////////////////////////////////////
//
// Compute bounding of shape
//
class ComputeBoundShapeVisitor : public ConstShapeVisitor
{
public:
ComputeBoundShapeVisitor(BoundingBox& bb):_bb(bb) {}
virtual void apply(const Sphere&);
virtual void apply(const Box&);
virtual void apply(const Cone&);
virtual void apply(const Cylinder&);
virtual void apply(const InfinitePlane&);
virtual void apply(const TriangleMesh&);
virtual void apply(const ConvexHull&);
virtual void apply(const HeightField&);
virtual void apply(const CompositeShape&);
BoundingBox& _bb;
};
void ComputeBoundShapeVisitor::apply(const Sphere& sphere)
{
Vec3 halfLengths(sphere.getRadius(),sphere.getRadius(),sphere.getRadius());
_bb.set(sphere.getCenter()-halfLengths,sphere.getCenter()+halfLengths);
}
void ComputeBoundShapeVisitor::apply(const Box& box)
{
if (box.zeroRotation())
{
_bb.set(box.getCenter()-box.getHalfLengths(),box.getCenter()+box.getHalfLengths());
}
else
{
float x = box.getHalfLengths().x();
float y = box.getHalfLengths().y();
float z = box.getHalfLengths().z();
Vec3 base_1(box.getCenter()+Vec3(-x,-y,-z));
Vec3 base_2(box.getCenter()+Vec3(x,-y,-z));
Vec3 base_3(box.getCenter()+Vec3(x,y,-z));
Vec3 base_4(box.getCenter()+Vec3(-x,y,-z));
Vec3 top_1(box.getCenter()+Vec3(-x,-y,z));
Vec3 top_2(box.getCenter()+Vec3(x,-y,z));
Vec3 top_3(box.getCenter()+Vec3(x,y,z));
Vec3 top_4(box.getCenter()+Vec3(-x,y,z));
Matrix matrix = box.getRotationMatrix();
_bb.expandBy(base_1*matrix);
_bb.expandBy(base_2*matrix);
_bb.expandBy(base_3*matrix);
_bb.expandBy(base_4*matrix);
_bb.expandBy(top_1*matrix);
_bb.expandBy(top_2*matrix);
_bb.expandBy(top_3*matrix);
_bb.expandBy(top_4*matrix);
}
}
void ComputeBoundShapeVisitor::apply(const Cone& cone)
{
if (cone.zeroRotation())
{
Vec3 halfLengths(cone.getRadius(),cone.getRadius(),cone.getHeight()*0.5f);
_bb.set(cone.getCenter()+Vec3(-cone.getRadius(),-cone.getRadius(),cone.getBaseOffset()),
cone.getCenter()+Vec3(cone.getRadius(),cone.getRadius(),cone.getHeight()+cone.getBaseOffset()));
}
else
{
Vec3 top(cone.getCenter()+Vec3(cone.getRadius(),cone.getRadius(),cone.getHeight()+cone.getBaseOffset()));
Vec3 base_1(cone.getCenter()+Vec3(-cone.getRadius(),-cone.getRadius(),cone.getBaseOffset()));
Vec3 base_2(cone.getCenter()+Vec3(cone.getRadius(),-cone.getRadius(),cone.getBaseOffset()));
Vec3 base_3(cone.getCenter()+Vec3(cone.getRadius(),cone.getRadius(),cone.getBaseOffset()));
Vec3 base_4(cone.getCenter()+Vec3(-cone.getRadius(),cone.getRadius(),cone.getBaseOffset()));
Matrix matrix = cone.getRotationMatrix();
_bb.expandBy(base_1*matrix);
_bb.expandBy(base_2*matrix);
_bb.expandBy(base_3*matrix);
_bb.expandBy(base_4*matrix);
_bb.expandBy(top*matrix);
}
}
void ComputeBoundShapeVisitor::apply(const Cylinder& cylinder)
{
if (cylinder.zeroRotation())
{
Vec3 halfLengths(cylinder.getRadius(),cylinder.getRadius(),cylinder.getHeight()*0.5f);
_bb.set(cylinder.getCenter()-halfLengths,cylinder.getCenter()+halfLengths);
}
else
{
float r = cylinder.getRadius();
float z = cylinder.getHeight()*0.5f;
Vec3 base_1(cylinder.getCenter()+Vec3(-r,-r,-z));
Vec3 base_2(cylinder.getCenter()+Vec3(r,-r,-z));
Vec3 base_3(cylinder.getCenter()+Vec3(r,r,-z));
Vec3 base_4(cylinder.getCenter()+Vec3(-r,r,-z));
Vec3 top_1(cylinder.getCenter()+Vec3(-r,-r,z));
Vec3 top_2(cylinder.getCenter()+Vec3(r,-r,z));
Vec3 top_3(cylinder.getCenter()+Vec3(r,r,z));
Vec3 top_4(cylinder.getCenter()+Vec3(-r,r,z));
Matrix matrix = cylinder.getRotationMatrix();
_bb.expandBy(base_1*matrix);
_bb.expandBy(base_2*matrix);
_bb.expandBy(base_3*matrix);
_bb.expandBy(base_4*matrix);
_bb.expandBy(top_1*matrix);
_bb.expandBy(top_2*matrix);
_bb.expandBy(top_3*matrix);
_bb.expandBy(top_4*matrix);
}
}
void ComputeBoundShapeVisitor::apply(const InfinitePlane&)
{
}
void ComputeBoundShapeVisitor::apply(const TriangleMesh&)
{
}
void ComputeBoundShapeVisitor::apply(const ConvexHull& hull)
{
apply((const TriangleMesh&)hull);
}
void ComputeBoundShapeVisitor::apply(const HeightField&)
{
}
void ComputeBoundShapeVisitor::apply(const CompositeShape&)
{
}
ProceduralGeometry::ProceduralGeometry()
{
}
ProceduralGeometry::ProceduralGeometry(Shape* shape)
{
setShape(shape);
}
ProceduralGeometry::ProceduralGeometry(const ProceduralGeometry& pg,const CopyOp& copyop):
Drawable(pg,copyop)
{
}
ProceduralGeometry::~ProceduralGeometry()
{
}
void ProceduralGeometry::drawImmediateMode(State& state)
{
if (_shape.valid())
{
DrawShapeVisitor dsv(state,_tessellationHints.get());
_shape->accept(dsv);
}
}
void ProceduralGeometry::accept(AttributeFunctor& af)
{
}
void ProceduralGeometry::accept(PrimitiveFunctor& pf)
{
}
bool ProceduralGeometry::computeBound() const
{
if (_shape.valid())
{
ComputeBoundShapeVisitor cbsv(_bbox);
_shape->accept(cbsv);
_bbox_computed = true;
return true;
}
return false;
}

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src/osg/Shape.cpp Normal file
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#include <osg/Shape>