Added Ruben Lopez's Inventor/VRML 1.0 loader.

This commit is contained in:
Robert Osfield
2002-07-26 15:37:23 +00:00
parent 8901c42434
commit 078cdbed49
39 changed files with 5572 additions and 1 deletions

View File

@@ -114,7 +114,8 @@ Kristopher Bixler <kbixler@mac.com>
Tino Schwarze <tino.schwarze@informatik.tu-chemnitz.de>
-port to HP-UX.
Ruben Lopez <ryu@gpul.org>
- Inventor ascii/VRML 1.0 loader.
Indirect Contributors
---------------------

View File

@@ -26,6 +26,7 @@ PLUGIN_DIRS = \
rgb\
lib3ds\
flt\
iv\
obj\
lwo\
txp\

View File

@@ -73,6 +73,7 @@ Registry::Registry()
addFileExtensionAlias("geo", "lwo");
addFileExtensionAlias("lw", "lwo");
addFileExtensionAlias("wrl", "iv");
}

481
src/osgPlugins/iv/COPYING Normal file
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@@ -0,0 +1,481 @@
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@@ -0,0 +1,20 @@
TOPDIR = ../../..
include $(TOPDIR)/Make/makedefs
CXXFILES =\
main.cpp\
nodecache.cpp\
normals.cpp\
osgvisitor.cpp\
readerwriter.cpp\
scanner.cpp\
parser.cpp\
LIBS += $(OSG_LIBS) $(OTHER_LIBS)
TARGET_BASENAME = iv
include $(TOPDIR)/Make/cygwin_plugin_def
PLUGIN = $(PLUGIN_PREFIX)$(TARGET_BASENAME).$(PLUGIN_EXT)
include $(TOPDIR)/Make/makerules

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@@ -0,0 +1,16 @@
CXXFLAGS=-g -Wall
OBJS=scanner.o parser.o main.o nodecache.o osgvisitor.o normals.o readerwriter.o
TARGET=osgdb_iv.so
$(TARGET): $(OBJS)
$(CXX) -shared $(OBJS) -o osgdb_wrl.so
scanner.cpp: scanner.l parser.cpp
flex -oscanner.cpp scanner.l
parser.cpp: parser.y
bison --debug -d -o parser.cpp parser.y
clean:
rm -f *.o main $(TARGET) $(OBJS) scanner.cpp parser.cpp *~

21
src/osgPlugins/iv/README Normal file
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@@ -0,0 +1,21 @@
This shared library can load both VRML1.0 and Inventor (they are practically
the same, only changes the header).
Features:
* Polygonal geometry (IndexedFaceSet)
* Materials
* Transformations
* External Textures (no inline ones)
* Doesn't crash when unknown nodes or attributes are found, only ignores
them.
To-Do:
* Use the new Geometry node of osg 0.9.0 that has support of vertex arrays
* Use the front face attribute (clockwise/counterclockwise)
* Implement more nodes. Maybe the cone, sphere, etc could be implemented
with a fixed number of polygons, always the same, or maybe as a LOD node,
that uses more or less polys depending on the distance to the camera.
Ruben lopez <ryu@gpul.org>

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@@ -0,0 +1,35 @@
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ATR_FLOAT_H__
#define __ATR_FLOAT_H__
#include "attribute.h"
class AtrFloat: public Attribute {
float value;
public:
AtrFloat(char *name, float val):Attribute(name) { value=val; }
virtual char *type() { return "AtrFloat"; }
float getValue() { return value; }
/** clone the an object of the same type as the node.*/
virtual Object* cloneType() const { return new AtrFloat(name,value); }
};
#endif

View File

@@ -0,0 +1,36 @@
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ATR_STRING_H__
#define __ATR_STRING_H__
#include "attribute.h"
class AtrString: public Attribute {
char *value;
public:
AtrString(char *name, char *value):Attribute(name) { this->value=strdup(value); }
~AtrString() { free (value); }
virtual char *type() { return "AtrString"; }
char *getValue() { return value; }
/** clone the an object of the same type as the node.*/
virtual Object* cloneType() const { return new AtrString(name,value); }
};
#endif

View File

@@ -0,0 +1,56 @@
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ATR_VEC_H__
#define __ATR_VEC_H__
#include "attribute.h"
class AtrVec: public Attribute {
std::vector<float> values;
public:
AtrVec(char *name):Attribute(name) { }
AtrVec(char *name, float x, float y):Attribute(name) {
values.push_back(x);
values.push_back(y);
}
AtrVec(char *name, float x, float y, float z):Attribute(name) {
values.push_back(x);
values.push_back(y);
values.push_back(z);
}
AtrVec(char *name, float x, float y, float z, float k):Attribute(name) {
values.push_back(x);
values.push_back(y);
values.push_back(z);
values.push_back(k);
}
void addVal(float val) { values.push_back(val); }
float getVal(int pos) { return values[pos]; }
float getValABS(int pos) { return values[pos]>0?values[pos]:-values[pos]; }
float getValCut(int pos) { return values[pos]>0?values[pos]:0.0f; }
int getSize() { return values.size(); }
virtual char *type() { return "AtrVec"; }
/** clone the an object of the same type as the node.*/
virtual Object* cloneType() const { return new AtrVec(name); }
};
#endif

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@@ -0,0 +1,46 @@
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ATTRIBUTE_H__
#define __ATTRIBUTE_H__
#include <osg/Object>
class SG_EXPORT Attribute: public osg::Object {
public:
char *name;
virtual char *type()=0;
char *getName() { return name; }
// OSG Object API
/** clone the an object of the same type as the node.*/
virtual Object* cloneType() const =0;
/** return a clone of a node, with Object* return type.*/
virtual Object* clone(const osg::CopyOp& copyop) const { return cloneType(); }
/** return the name of the node's library.*/
virtual const char* libraryName() const { return "osgdb_wrl"; }
/** return the name of the node's class type.*/
virtual const char* className() const { return "Attribute"; }
protected:
Attribute(char *name) {this->name=strdup(name); }
~Attribute() {free(name); }
};
#endif

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __COORDINATE3_H__
#define __COORDINATE3_H__
#include "geometry.h"
#include "mynode.h"
class Coordinate3: public MyNode {
VertexList vertices;
public:
Coordinate3(VertexList *vertices) {
this->vertices=*vertices;
}
virtual char *type() { return "Coordinate3"; }
virtual void accept(MyNodeVisitor *v) { v->applyCoordinate3(this); }
VertexList getVertices() { return vertices; }
};
#endif

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __GEOMETRY_H__
#define __GEOMETRY_H__
#include <vector>
#include <osg/Vec3>
typedef std::vector<osg::Vec3> VertexList;
typedef std::vector<int> VertexIndexList;
typedef std::pair<float,float> TextureCoordVal;
typedef std::vector<TextureCoordVal > TextureCoordList;
typedef std::vector<VertexIndexList*> PolygonList;
typedef float Matrix[16];
#endif

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __INDEXED_FACE_SET_H__
#define __INDEXED_FACE_SET_H__
#include "mynode.h"
class IndexedFaceSet: public MyNode {
PolygonList polys;
PolygonList textureIndices; // Indexed texture set.
bool _hasTextureIndices;
public:
IndexedFaceSet() {}
IndexedFaceSet(PolygonList *p) {
polys=*p;
_hasTextureIndices=false;
}
IndexedFaceSet(PolygonList *p, PolygonList *t) {
polys=*p;
textureIndices=*t;
_hasTextureIndices=true;
}
bool hasTextureIndices() { return _hasTextureIndices; }
PolygonList getPolygons() { return polys; }
PolygonList getTextureIndices() { return textureIndices; }
virtual char *type() { return "IndexedFaceSet"; }
virtual void accept(MyNodeVisitor *v) { v->applyIndexedFaceSet(this); }
};
#endif

38
src/osgPlugins/iv/ltstr.h Normal file
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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __LTSTR_H__
#define __LTSTR_H__
#include <string.h>
/** @class ltstr
*
* @brief clase/estructura que implementa un algoritmo de comparacion
* de dos cadenas para mapas cuyo indice es una cadena.
*/
struct ltstr
{
bool operator()(const char* s1, const char* s2) const
{
return strcmp(s1, s2) < 0;
}
};
#endif

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef WIN32
# pragma warning (disable:4786)
# pragma warning (disable:4541)
#endif
#include <stdio.h>
#include <iostream>
#include "mynode.h"
#include "osgvisitor.h"
#include <osgGLUT/Viewer>
#include <osgGLUT/glut>
extern int yyparse();
extern int yydebug;
extern MyNode *getRoot();
extern FILE *yyin;
int isatty(int t) { return 0; }
osg::Node *readVRMLNode(const char *file) {
yydebug=0;
yyin=fopen(file,"r");
std::cout << "Parsing..." << std::endl;
yyparse();
osg::ref_ptr<MyNode> n=getRoot();
try {
std::cout << "Generating OSG tree..." << std::endl;
osg::ref_ptr<OSGVisitor> visitante=new OSGVisitor(n.get());
return visitante->getRoot();
} catch (...) {
std::cerr << "VRML: error reading" << std::endl;
return 0;
}
}

22
src/osgPlugins/iv/main.h Normal file
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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <osg/Node>
osg::Node *readVRMLNode(const char *file);

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __MATERIAL_H__
#define __MATERIAL_H__
#include "mynode.h"
class Material: public MyNode {
public:
Material() {}
Material(MyNode *n): MyNode(n) {}
virtual char *type() { return "Material"; }
virtual void accept(MyNodeVisitor *v) { v->applyMaterial(this); }
};
#endif

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __MATRIX_TRANSFORM_H__
#define __MATRIX_TRANSFORM_H__
#include "mynode.h"
#include "geometry.h"
class MatrixTransform: public MyNode {
Matrix m;
public:
MatrixTransform(Matrix m) {memcpy(this->m,m,sizeof(float)*16);}
float getElem(int i) { return m[i]; }
virtual char *type() { return "MatrixTransform"; }
virtual void accept(MyNodeVisitor *v) { v->applyMatrixTransform(this); }
};
#endif

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __NODE_H__
#define __NODE_H__
#include <vector>
#include <map>
#include <iostream>
#include "attribute.h"
#include "mynodevisitor.h"
#include "ltstr.h"
#ifdef WIN32
# pragma warning (disable:4786)
#endif
class MyNode : public osg::Object {
public:
typedef std::vector< osg::ref_ptr<MyNode> > MyNodeList;
typedef std::map< const char*, osg::ref_ptr<Attribute>, ltstr > AttributeMap;
protected:
MyNodeList children;
AttributeMap attributes;
bool two_sided;
public:
MyNode() {two_sided=false;}
MyNode(const MyNode *other) { children=other->children; attributes=other->attributes; two_sided=false; }
virtual char *type() { return "MyNode"; } ///< Returns generic type
void addAttribute(char *name, Attribute *atr) { attributes[name]=atr; }
void addChild(MyNode *node) { children.push_back(node); }
MyNodeList getChildren() { return children; }
AttributeMap getAttributes() { return attributes; }
Attribute *getAttribute(char *name) {
if (attributes.find(name) != attributes.end()) {
return attributes[name].get();
} else {
return 0;
}
}
void setChildren(MyNodeList children) { this->children=children; }
void setAttributes(AttributeMap attributes) { this->attributes=attributes; }
void print(int indent) {
for (int i=0;i<indent;i++) std::cout << " ";
std::cout << type() << std::endl;
MyNodeList::iterator iter;
for (iter=children.begin();iter!=children.end();iter++) {
osg::ref_ptr<MyNode> node = *iter;
node->print(indent+4);
}
}
void setTwoSided() { two_sided=true; }
bool getTwoSided() { return two_sided; }
virtual void accept(MyNodeVisitor *v) { v->applyMyNode(this); }
// OSG Object API
/** clone the an object of the same type as the node.*/
virtual Object* cloneType() const { return new MyNode(); }
/** return a clone of a node, with Object* return type.*/
virtual Object* clone(const osg::CopyOp& copyop) const { return new MyNode(this); }
/** return the name of the node's library.*/
virtual const char* libraryName() const { return "osgdb_wrl"; }
/** return the name of the node's class type.*/
virtual const char* className() const { return "MyNode"; }
};
#endif

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __MY_NODE_VISITOR_H__
#define __MY_NODE_VISITOR_H__
class MyNode;
class Material;
class Coordinate3;
class MatrixTransform;
class Separator;
class IndexedFaceSet;
class TextureCoordinate;
class Texture2;
class Transform;
#include <osg/Object>
class MyNodeVisitor: public osg::Object {
public:
virtual void applyMyNode(MyNode *node)=0;
virtual void applyMaterial(Material *material)=0;
virtual void applyCoordinate3(Coordinate3 *coord)=0;
virtual void applyMatrixTransform(MatrixTransform *tr)=0;
virtual void applySeparator(Separator *sep)=0;
virtual void applyIndexedFaceSet(IndexedFaceSet *ifs)=0;
virtual void applyTextureCoordinate(TextureCoordinate *texc)=0;
virtual void applyTexture2(Texture2 *tex)=0;
virtual void applyTransform(Transform *trans)=0;
/** clone the an object of the same type as the node.*/
virtual Object* cloneType() const = 0;
/** return a clone of a node, with Object* return type.*/
virtual Object* clone(const osg::CopyOp& copyop) const { return cloneType(); }
/** return the name of the node's library.*/
virtual const char* libraryName() const { return "osgdb_wrl"; }
/** return the name of the node's class type.*/
virtual const char* className() const { return "MyNodeVisitor"; }
};
#endif

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "nodecache.h"
NodeCache::NodeMap NodeCache::nodes;

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __CACHE_NODOS_H__
#define __CACHE_NODOS_H__
#include <map>
#include "mynode.h"
#include "ltstr.h"
class NodeCache {
typedef std::map<char *, osg::ref_ptr<MyNode>, ltstr > NodeMap;
static NodeMap nodes;
public:
static void addNode(char *name, MyNode *node) {
nodes[name]=node;
}
static MyNode* getNode(char *name) {
if (nodes.find(name) != nodes.end()) {
return nodes[name].get();
} else {
std::cerr << "Node does not exist" << std::endl;
return new MyNode();
}
}
};
#endif

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "normals.h"
#include <osg/Matrix>
#define CREASE_ANGLE 3.14159265356 * 45 / 180
float difAng(osg::Vec3 a, osg::Vec3 b) {
float div = a.length() * b.length();
return (div != 0.0f ? acosf( (a*b) / div) : 0.0f );
}
osg::Vec3 calcNormal(osg::Vec3 &a, osg::Vec3 &b, osg::Vec3 &c) {
osg::Vec3 norm;
osg::Vec3 v1;
osg::Vec3 v2;
v1=b-c;
v2=a-b;
norm=v1 ^ v2; // cross product
norm.normalize();
return norm;
}
void get3v(VertexList &vertices, VertexIndexList &vindex, int &a, int &b, int &c) {
unsigned tam=vindex.size();
unsigned i;
b=0;c=0;
a=vindex[0];
for (i=1;i<tam;i++) {
if (vertices[vindex[i]] != vertices[a]) { b=vindex[i];break; }
}
for (i=1;i<tam;i++) {
if (vertices[vindex[i]] != vertices[a] && vertices[vindex[i]] != vertices[b]) { c=vindex[i];break; }
}
}
osg::Vec3 *calcNormals(VertexList &vertices, PolygonList &polygons, unsigned nvert_total) {
unsigned nPoly=polygons.size();
osg::Vec3 *normales_polys = new osg::Vec3[nPoly];
osg::Vec3 *normales = new osg::Vec3[nvert_total];
unsigned pos=0;
unsigned poly;
/* Phase 1: Get flat normals */
for (poly=0;poly<nPoly;poly++) {
VertexIndexList vindex=*polygons[poly];
if (vindex.size() > 2) {
int v0,v1,v2;
get3v(vertices,vindex,v0,v1,v2);
if (v0 == v1 || v0 == v2) {
std::cerr << "ERROR: Vertices alineados: nv=" << vindex.size() << std::endl;
}
normales_polys[poly] = calcNormal(vertices[v0],
vertices[v1],
vertices[v2]);
if (normales_polys[poly] == osg::Vec3(0,0,0) && vindex.size() > 2) {
std::cerr << "##***" << "Normal nula VERTICES=" << vindex.size() << " " << vertices[v0] << " " << vertices[v1] << " " << vertices[v2] << std::endl;
}
}
}
/* Phase 2: Selective smooth depending on crease angle */
for (poly=0;poly<nPoly;poly++) {
VertexIndexList vindex=*polygons[poly];
unsigned j;
osg::Vec3 pnormal=normales_polys[poly];
for (j=0;j<vindex.size();j++) {
int vertice=vindex[j];
normales[pos]=osg::Vec3(pnormal[0],pnormal[1],pnormal[2]);
unsigned poly2;
for (poly2=0;poly2<nPoly;poly2++) {
if (poly2 == poly) continue;
VertexIndexList vindex2=*polygons[poly2];
unsigned k;
osg::Vec3 pnormal2=normales_polys[poly2];
for (k=0;k<vindex2.size();k++) {
if (vindex2[k] == vertice) {
float ang=difAng(pnormal,pnormal2);
if (ang < CREASE_ANGLE) {
normales[pos]+=osg::Vec3(pnormal2[0],pnormal2[1],pnormal2[2]);
}
}
}
}
normales[pos].normalize();
pos++;
}
}
/* Phase 3: All done ;) */
return normales;
}

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <osg/Matrix>
#include "geometry.h"
osg::Vec3 calcNormal(osg::Vec3 &a, osg::Vec3 &b, osg::Vec3 &c);
osg::Vec3 *calcNormals(VertexList &vertices,
PolygonList &polygons,
unsigned nvert_total);

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef WIN32
# pragma warning (disable:4786)
# pragma warning (disable:4541)
#endif
#include <iostream>
#include "osgvisitor.h"
#include "material.h"
#include "coordinate3.h"
#include "separator.h"
#include "matrixtransform.h"
#include "indexedfaceset.h"
#include "texturecoordinate.h"
#include "texture2.h"
#include "transform.h"
#include <osg/Geode>
#include <osg/GeoSet>
#include <osg/StateSet>
#include <osg/Material>
#include <osg/Texture>
#include <osg/Transform>
#include <osg/Transparency>
#include <osg/CullFace>
#include <osg/FrontFace>
#include <osg/PolygonMode>
#include <osgDB/ReadFile>
#include <osgUtil/SmoothingVisitor> ///< Para calcular normals
#include <osgUtil/TriStripVisitor> ///< Para convertir a tristrip
#include "atrvec.h"
#include "atrfloat.h"
#include "atrstring.h"
#include "ltstr.h"
#include "normals.h"
#define CREASE_ANGLE 2//3.14159265359 * 2.0 / 3.0
class CacheObjetos {
typedef std::map<osg::ref_ptr<Material>, osg::ref_ptr<osg::Material> > MaterialMap;
typedef std::map<const char*, osg::ref_ptr<osg::Texture>, ltstr> TextureMap;
typedef std::map<osg::ref_ptr<MyNode>, osg::ref_ptr<osg::Node> > NodeMap;
static MaterialMap materiales;
static TextureMap textures;
static NodeMap nodos;
public:
static osg::Node* getMyNode(MyNode* _node) {
return 0;
}
static osg::Material* getMaterial(Material* _material) {
if (materiales.find(_material) == materiales.end()) {
AtrVec *ambient=(AtrVec*)_material->getAttribute("ambientColor");
AtrVec *diffuse=(AtrVec*)_material->getAttribute("diffuseColor");
AtrVec *specular=(AtrVec*)_material->getAttribute("specularColor");
AtrFloat *shininess=(AtrFloat*)_material->getAttribute("shininess");
AtrFloat *transparency=(AtrFloat*)_material->getAttribute("transparency");
osg::Material *material=new osg::Material();
if (ambient) material->setAmbient(osg::Material::FRONT_AND_BACK,osg::Vec4(ambient->getValCut(0),ambient->getValCut(1),ambient->getValCut(2),1.0f));
if (diffuse) material->setDiffuse(osg::Material::FRONT_AND_BACK,osg::Vec4(diffuse->getValCut(0),diffuse->getValCut(1),diffuse->getValCut(2),1.0f));
if (specular) material->setSpecular(osg::Material::FRONT_AND_BACK,osg::Vec4(specular->getValCut(0),specular->getValCut(1),specular->getValCut(2),1.0f));
if (shininess) material->setShininess(osg::Material::FRONT_AND_BACK,shininess->getValue());
if (transparency) material->setTransparency(osg::Material::FRONT_AND_BACK,transparency->getValue());
materiales[_material]=material;
}
return materiales[_material].get();
}
static osg::Texture* getTextura(const char* _texture) {
if (textures.find(_texture) == textures.end()) {
osg::Texture *texture=new osg::Texture();
texture->setImage(osgDB::readImageFile(_texture));
texture->setWrap(osg::Texture::WRAP_S,osg::Texture::REPEAT);
texture->setWrap(osg::Texture::WRAP_T,osg::Texture::REPEAT);
std::cout << "Loading texture " << _texture << std::endl;
textures[_texture]=texture;
}
return textures[_texture].get();
}
};
CacheObjetos::MaterialMap CacheObjetos::materiales;
CacheObjetos::TextureMap CacheObjetos::textures;
CacheObjetos::NodeMap CacheObjetos::nodos;
static void makeTransform(MatrixTransform *matriz_active, osg::Transform *nodo) {
// Original
osg::Matrix m(matriz_active->getElem(0),matriz_active->getElem(1),matriz_active->getElem(2),matriz_active->getElem(3),
matriz_active->getElem(4),matriz_active->getElem(5),matriz_active->getElem(6),matriz_active->getElem(7),
matriz_active->getElem(8),matriz_active->getElem(9),matriz_active->getElem(10),matriz_active->getElem(11),
matriz_active->getElem(12),matriz_active->getElem(13),matriz_active->getElem(14),matriz_active->getElem(15));
nodo->setMatrix(m);
}
OSGVisitor::OSGVisitor(MyNode *nodo) {
root=0;
parent=0;
coord3_active=0;
tcoord_active=0;
texture_active=0;
material_active=0;
total_vert=0;
two_sided=false;
nodo->accept(this);
std::cout << "Model of " << total_vert << " vertices" << std::endl;
}
void OSGVisitor::applyMyNode(MyNode *nodo) {
}
void OSGVisitor::applyMaterial(Material *material) {
material_active=material;
}
void OSGVisitor::applyCoordinate3(Coordinate3 *coord) {
coord3_active=coord;
}
void OSGVisitor::applyMatrixTransform(MatrixTransform *tr) {
makeTransform(tr,parent);
}
void OSGVisitor::applySeparator(Separator *sep) {
osg::Transform *group=new osg::Transform();
if (root==0) {
root=group;
}
if (parent!=0) {
parent->addChild(group);
}
two_sided=false;
MyNode::MyNodeList hijos=sep->getChildren();
for (MyNode::MyNodeList::iterator iter=hijos.begin();iter!=hijos.end();iter++) {
osg::ref_ptr<MyNode> hijo=*iter;
parent=group;
hijo->accept(this);
}
}
void OSGVisitor::applyIndexedFaceSet(IndexedFaceSet *ifs) {
unsigned i,j;
if (coord3_active == 0) {
std::cerr << "ERROR: IndexedFaceSet without previous Coordinate3!" << std::endl;
throw -1;
}
osg::Geode *geode=new osg::Geode();
osg::GeoSet *objeto=new osg::GeoSet();
osg::StateSet *state=new osg::StateSet();
osg::FrontFace *frontface=new osg::FrontFace();
frontface->setMode(osg::FrontFace::CLOCKWISE);
state->setAttributeAndModes(frontface,osg::StateAttribute::ON);
osg::CullFace *cull=new osg::CullFace();
cull->setMode(osg::CullFace::BACK);
if (ifs->getTwoSided() == false) {
state->setAttributeAndModes(cull,osg::StateAttribute::ON);
} else {
std::cout << "Deactivating culling for this object" << std::endl;
state->setAttributeAndModes(cull,osg::StateAttribute::OFF);
osg::Transparency *transp=new osg::Transparency();
transp->setFunction(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
state->setAttribute(transp);
state->setMode(GL_BLEND,osg::StateAttribute::ON);
state->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
}
geode->setStateSet(state);
/** Applying the material */
if (material_active!=0) {
osg::Material *material = CacheObjetos::getMaterial(material_active);
state->setAttributeAndModes(material,osg::StateAttribute::ON);
}
/** Applying the texture */
if (texture_active!=0) {
AtrString *filename=(AtrString*)texture_active->getAttribute("filename");
if (filename) {
osg::Texture *texture=CacheObjetos::getTextura(filename->getValue());
state->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
}
}
VertexList vertices=coord3_active->getVertices();
PolygonList polys=ifs->getPolygons();
TextureCoordList tcoord;
if (tcoord_active) tcoord=tcoord_active->getTextureCoords();
unsigned nPoly=polys.size();
unsigned nvert_total=0;
objeto->setPrimType(osg::GeoSet::POLYGON);
objeto->setNumPrims(nPoly);
/** Calculating length of primitives */
int *long_primitivas=new int[nPoly];
for (j=0;j<nPoly;j++) {
long_primitivas[j]=polys[j]->size();
nvert_total+=long_primitivas[j];
}
objeto->setPrimLengths(long_primitivas);
this->total_vert+=nvert_total;
/** We change from the ad-hoc scenegraph to the OSG one */
unsigned posCoords=0;
osg::Vec3 *coords = new osg::Vec3[nvert_total];
osg::Vec2 *tcoords = new osg::Vec2[nvert_total];
osg::Vec3 *normalsFlat = new osg::Vec3[nvert_total];
bool hasTextureIndices=ifs->hasTextureIndices();
PolygonList textureIndices = ifs->getTextureIndices();
for (j=0; j < nPoly; j++) {
VertexIndexList vindex=*polys[j];
VertexIndexList texindex;
if (hasTextureIndices) texindex=*textureIndices[j];
unsigned nVert=vindex.size();
osg::Vec3 normal;
if (nVert > 2) {
normal = calcNormal(vertices[vindex[0]],vertices[vindex[1]],vertices[vindex[2]]);
} else {
normal = osg::Vec3(0,0,0);
}
for (i=0; i < nVert; i++) {
int vert = vindex[i];
coords[posCoords].set(vertices[vert][0],vertices[vert][1],vertices[vert][2]);
normalsFlat[posCoords].set(normal[0],normal[1],normal[2]);
if (tcoord_active) {
if (hasTextureIndices) {
int coord=texindex[i];
tcoords[posCoords].set(tcoord[coord].first,tcoord[coord].second);
} else {
tcoords[posCoords].set(tcoord[vert].first,tcoord[vert].second);
}
}
posCoords++;
}
}
/** Establishing parameters of the geoset */
objeto->setCoords(coords);
if (tcoord_active) {
objeto->setTextureCoords(tcoords);
objeto->setTextureBinding(osg::GeoSet::BIND_PERVERTEX);
}
//osg::Vec3 *normals=calcNormals(vertices,polys,nvert_total);
//objeto->setNormals(normals);
geode->addDrawable(objeto);
parent->addChild(geode);
}
void OSGVisitor::applyTextureCoordinate(TextureCoordinate *texc) {
tcoord_active=texc;
}
void OSGVisitor::applyTexture2(Texture2 *tex) {
texture_active=tex;
}
void OSGVisitor::applyTransform(Transform *trans) {
osg::Matrix scale;
osg::Matrix rotate;
osg::Matrix translate;
AtrVec *_scale=(AtrVec*)trans->getAttribute("scaleFactor");
AtrVec *_rotate=(AtrVec*)trans->getAttribute("rotation");
AtrVec *_translate=(AtrVec*)trans->getAttribute("translation");
if (_scale) {
scale.makeScale(_scale->getVal(0),_scale->getVal(1),_scale->getVal(2));
}
if (_rotate) {
rotate.makeRotate(_rotate->getVal(3),_rotate->getVal(0),_rotate->getVal(1),_rotate->getVal(2));
}
if (_translate) {
translate.makeTranslate(_translate->getVal(0),_translate->getVal(1),_translate->getVal(2));
}
parent->setMatrix(scale*rotate*translate);
}
osg::Node* OSGVisitor::getRoot() {
return root;
}

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/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __VISITANTE_OSG_H__
#define __VISITANTE_OSG_H__
#include "mynodevisitor.h"
#include <osg/Group>
class OSGVisitor: public MyNodeVisitor {
osg::Node *root;
osg::Transform *parent;
Coordinate3 *coord3_active;
TextureCoordinate *tcoord_active;
Texture2 *texture_active;
Material *material_active;
int total_vert;
bool two_sided;
public:
OSGVisitor(MyNode *node);
virtual void applyMyNode(MyNode* node);
virtual void applyMaterial(Material *material);
virtual void applyCoordinate3(Coordinate3 *coord);
virtual void applyMatrixTransform(MatrixTransform *tr);
virtual void applySeparator(Separator *sep);
virtual void applyIndexedFaceSet(IndexedFaceSet *ifs);
virtual void applyTextureCoordinate(TextureCoordinate *texc);
virtual void applyTexture2(Texture2 *tex);
virtual void applyTransform(Transform *trans);
osg::Node* getRoot();
virtual Object* cloneType() const { return new OSGVisitor(0); }
};
#endif

1218
src/osgPlugins/iv/parser.cpp Normal file

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typedef union {
char *s_value;
float f_value;
MyNode *nodo;
Attribute *attribute;
VertexList *vlist;
VertexIndexList *vindex;
TextureCoordList *tcoord;
PolygonList *plist;
Matrix matrix;
int i_value;
} YYSTYPE;
#define STRING 257
#define QUOTED_STRING 258
#define FLOAT 259
#define INT 260
#define SEPARATOR 261
#define DEF 262
#define UN_MATERIAL 263
#define DIFFUSE_COLOR 264
#define COORDINATE3 265
#define INDEXED_FACE_SET 266
#define A_POINT 267
#define COORD_INDEX 268
#define TEXTURE_COORD_INDEX 269
#define NORMAL_INDEX 270
#define TEXTURE_COORDINATE 271
#define TEXTURE2 272
#define MATRIX_TRANSFORM 273
#define MATRIX 274
#define LISTA_VACIA 275
#define FINPOLY 276
#define DOBLE_CARA 277
#define VECTOR 278
#define VRML_HEADER 279
#define TRANSFORM 280
#define USE 281
extern YYSTYPE yylval;

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#ifndef BISON_PARSER_HPP
# define BISON_PARSER_HPP
#ifndef YYSTYPE
typedef union {
char *s_value;
float f_value;
MyNode *nodo;
Attribute *attribute;
VertexList *vlist;
VertexIndexList *vindex;
TextureCoordList *tcoord;
PolygonList *plist;
Matrix matrix;
int i_value;
} yystype;
# define YYSTYPE yystype
# define YYSTYPE_IS_TRIVIAL 1
#endif
# define STRING 257
# define QUOTED_STRING 258
# define FLOAT 259
# define INT 260
# define SEPARATOR 261
# define DEF 262
# define UN_MATERIAL 263
# define DIFFUSE_COLOR 264
# define COORDINATE3 265
# define INDEXED_FACE_SET 266
# define A_POINT 267
# define COORD_INDEX 268
# define TEXTURE_COORD_INDEX 269
# define NORMAL_INDEX 270
# define TEXTURE_COORDINATE 271
# define TEXTURE2 272
# define MATRIX_TRANSFORM 273
# define MATRIX 274
# define LISTA_VACIA 275
# define FINPOLY 276
# define DOBLE_CARA 277
# define VECTOR 278
# define VRML_HEADER 279
# define TRANSFORM 280
# define USE 281
extern YYSTYPE yylval;
#endif /* not BISON_PARSER_HPP */

159
src/osgPlugins/iv/parser.y Normal file
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%{
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef WIN32
# pragma warning (disable:4786)
# pragma warning (disable:4541)
#endif
#include <malloc.h>
#include "mynode.h"
#include <stdlib.h>
#include "geometry.h"
#include "nodecache.h"
#include "material.h"
#include "coordinate3.h"
#include "separator.h"
#include "matrixtransform.h"
#include "indexedfaceset.h"
#include "texturecoordinate.h"
#include "texture2.h"
#include "transform.h"
#include "atrfloat.h"
#include "atrstring.h"
#include "atrvec.h"
#include "string.h"
extern int yyline;
extern int yylex();
void yyerror(char *str,...);
static MyNode *root_node;
%}
%union {
char *s_value;
float f_value;
MyNode *nodo;
Attribute *attribute;
VertexList *vlist;
VertexIndexList *vindex;
TextureCoordList *tcoord;
PolygonList *plist;
Matrix matrix;
int i_value;
};
%token <s_value> STRING
%token <s_value> QUOTED_STRING
%token <f_value> FLOAT
%token <i_value> INT
%token SEPARATOR DEF UN_MATERIAL DIFFUSE_COLOR COORDINATE3 INDEXED_FACE_SET
%token A_POINT COORD_INDEX TEXTURE_COORD_INDEX NORMAL_INDEX TEXTURE_COORDINATE TEXTURE2
%token MATRIX_TRANSFORM MATRIX
%token LISTA_VACIA FINPOLY
%token DOBLE_CARA
%token VECTOR
%token VRML_HEADER
%token TRANSFORM
%token USE
%type <vlist> points
%type <plist> polylist
%type <vindex> vertexilist
%type <tcoord> coords
%type <nodo> node_contents
%type <nodo> node
%type <attribute> attr
%type <matrix> matrix
%start vrml_file
%%
vrml_file: VRML_HEADER node { root_node=$2; }
;
node:
UN_MATERIAL '{' node_contents '}' { $$=new Material($3); delete $3;}
| TEXTURE2 '{' node_contents '}' { $$=new Texture2($3); delete $3;}
| COORDINATE3 '{' A_POINT '[' points ']' '}' { $$=new Coordinate3($5); delete $5; }
| INDEXED_FACE_SET '{' COORD_INDEX '[' polylist ']' '}' {$$=new IndexedFaceSet($5); delete $5; }
| INDEXED_FACE_SET '{' COORD_INDEX '[' polylist ']' TEXTURE_COORD_INDEX '[' polylist ']' '}' {$$=new IndexedFaceSet($5,$9); delete $5; delete $9; }
| INDEXED_FACE_SET '{' COORD_INDEX '[' polylist ']' NORMAL_INDEX '[' polylist ']' '}' {$$=new IndexedFaceSet($5); delete $5; delete $9; }
| INDEXED_FACE_SET '{' DOBLE_CARA COORD_INDEX '[' polylist ']' '}' {$$=new IndexedFaceSet($6); delete $6; $$->setTwoSided(); }
| INDEXED_FACE_SET '{' DOBLE_CARA COORD_INDEX '[' polylist ']' TEXTURE_COORD_INDEX '[' polylist ']' '}' {$$=new IndexedFaceSet($6,$10); delete $6; delete $10; $$->setTwoSided(); $$->setTwoSided(); }
| INDEXED_FACE_SET '{' DOBLE_CARA COORD_INDEX '[' polylist ']' NORMAL_INDEX '[' polylist ']' '}' {$$=new IndexedFaceSet($6); delete $6; delete $10; $$->setTwoSided(); }
| MATRIX_TRANSFORM '{' MATRIX matrix '}' { $$=new MatrixTransform($4); }
| TEXTURE_COORDINATE '{' A_POINT '[' coords ']' '}' { $$=new TextureCoordinate($5); delete $5; }
| TRANSFORM '{' node_contents '}' { $$=new Transform($3); delete $3; }
| STRING '{' node_contents '}' { $$=$3; }
| SEPARATOR '{' node_contents '}' {$$=new Separator($3); delete $3; }
;
node_contents: { $$=new MyNode(); }
| node_contents attr { $1->addAttribute($2->getName(), $2); $$=$1; }
| node_contents DEF STRING node { NodeCache::addNode($3,$4); $1->addChild($4); $$=$1; }
| node_contents node { $1->addChild($2); $$=$1; }
| node_contents USE STRING {$1->addChild(NodeCache::getNode($3)); $$=$1; }
| VECTOR '[' points ']' { delete $3;$$=new MyNode(); }
;
points: points FLOAT FLOAT FLOAT { $1->push_back(osg::Vec3($2,$3,$4)); $$=$1; }
| { $$=new VertexList(); }
;
polylist: polylist vertexilist { $1->push_back($2);$$=$1; }
| { $$=new PolygonList(); }
;
vertexilist: INT vertexilist { $2->push_back($1);$$=$2; }
| FINPOLY { $$=new VertexIndexList(); }
;
matrix:
FLOAT FLOAT FLOAT FLOAT
FLOAT FLOAT FLOAT FLOAT
FLOAT FLOAT FLOAT FLOAT
FLOAT FLOAT FLOAT FLOAT {Matrix m; m[0]=$1; m[1]=$2; m[2]=$3;m[3]=$4;m[4]=$5;m[5]=$6;m[6]=$7;m[7]=$8;m[8]=$9;m[9]=$10;m[10]=$11;m[11]=$12;m[12]=$13;m[13]=$14;m[14]=$15;m[15]=$16; memcpy($$,m,sizeof(m));}
;
attr: STRING FLOAT { $$=new AtrFloat($1,$2); }
| STRING STRING { $$=new AtrString($1,$2); }
| STRING FLOAT FLOAT { $$=new AtrVec($1,$2,$3); }
| STRING FLOAT FLOAT FLOAT { $$=new AtrVec($1,$2,$3,$4); }
| STRING FLOAT FLOAT FLOAT FLOAT { $$=new AtrVec($1,$2,$3,$4,$5); }
| STRING QUOTED_STRING { $$=new AtrString($1,$2); }
;
coords: coords FLOAT FLOAT { $1->push_back(TextureCoordVal($2,$3));$$=$1; }
| { $$=new TextureCoordList(); }
;
%%
void yyerror(char *str,...)
{
printf("There was an error near line %d : \"%s\"!!!\n",yyline,str);fflush(stdout);
}
MyNode *getRoot() { return root_node; }

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@@ -0,0 +1,32 @@
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef WIN32
# pragma warning (disable:4786)
# pragma warning (disable:4541)
#endif
#include "readerwriter.h"
#include "main.h"
osgDB::ReaderWriter::ReadResult VrmlReaderWriter::readNode(const std::string& fileName,
const osgDB::ReaderWriter::Options*) {
return readVRMLNode(fileName.c_str());
}
osgDB::RegisterReaderWriterProxy<VrmlReaderWriter> g_readerWriter_VRML_Proxy;

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@@ -0,0 +1,40 @@
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __LECTOR_ESCRITOR_H__
#define __LECTOR_ESCRITOR_H__
#include <osgDB/FileNameUtils>
#include <osgDB/Registry>
#include <osgDB/ReadFile>
#include <osgDB/FileUtils>
#include <osgDB/ReaderWriter>
class VrmlReaderWriter: public osgDB::ReaderWriter {
public:
VrmlReaderWriter() { }
virtual const char* className() { return "VRML"; }
virtual bool acceptsExtension(const std::string& extension) {
return osgDB::equalCaseInsensitive(extension,"wrl")
|| osgDB::equalCaseInsensitive(extension,"iv");
}
virtual ReadResult readNode(const std::string& fileName,const osgDB::ReaderWriter::Options*);
};
#endif

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%{
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "mynode.h"
#include "geometry.h"
#include "parser.hpp"
#include <string.h>
int yyline=1;
%}
DIGIT [0-9]
%x cindex
%x def
%%
<INITIAL,cindex>[ \t\r,]
<INITIAL,cindex>"\n" { yyline++; }
DEF { BEGIN def;return DEF; }
Coordinate3 { return COORDINATE3; }
Texture2 { return TEXTURE2; }
Separator { return SEPARATOR; }
Material { return UN_MATERIAL; }
IndexedFaceSet { return INDEXED_FACE_SET; }
TextureCoordinate2 { return TEXTURE_COORDINATE; }
Transform { return TRANSFORM; }
MatrixTransform { return MATRIX_TRANSFORM; }
DobleCara { return DOBLE_CARA; }
matrix { return MATRIX; }
point { return A_POINT; }
coordIndex { BEGIN cindex;return COORD_INDEX; }
textureCoordIndex { BEGIN cindex;return TEXTURE_COORD_INDEX; }
normalIndex { BEGIN cindex;return NORMAL_INDEX; }
vector { return VECTOR; }
<cindex>-1 { return FINPOLY; }
<INITIAL,cindex>\] { BEGIN INITIAL; return ']'; }
USE { BEGIN def;return USE; }
"#VRML\ V1.0 ascii" { return VRML_HEADER; }
"#Inventor\ V2.0 ascii" { return VRML_HEADER; }
#[^\n\r]*
"-"?{DIGIT}+"."{DIGIT}* {
yylval.f_value=strtod(yytext,NULL);
return FLOAT;
}
"-"?{DIGIT}+"."{DIGIT}*[Ee][\+-]{DIGIT}+ {
yylval.f_value=strtod(yytext,NULL);
return FLOAT;
}
"-"?{DIGIT}+[Ee][\+-]{DIGIT}+ {
yylval.f_value=strtod(yytext,NULL);
return FLOAT;
}
<INITIAL>"-"?{DIGIT}+ {
yylval.f_value=(float)strtol(yytext,NULL,10);
return FLOAT;
}
<cindex>"-"?{DIGIT}+ {
yylval.i_value=strtol(yytext,NULL,10);
return INT;
}
<INITIAL,cindex>[,{}\[\]] { return yytext[0]; }
[a-zA-Z0-9\-\_\*]*\ *\[\]
<INITIAL,def>[a-zA-Z0-9\-\_\*\!\.]* { BEGIN INITIAL;yylval.s_value=strdup(yytext);return STRING; }
\"[^\"]*\" { yylval.s_value=strdup(yytext+1);yylval.s_value[strlen(yylval.s_value)-1]=0;return QUOTED_STRING; }
%%
int yywrap(void)
{
return (1);
}

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@@ -0,0 +1,33 @@
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __SEPARATOR_H__
#define __SEPARATOR_H__
#include "mynode.h"
class Separator: public MyNode {
public:
Separator() {}
Separator(MyNode *n): MyNode(n) {}
virtual char *type() { return "Separator"; }
virtual void accept(MyNodeVisitor *v) { v->applySeparator(this); }
};
#endif

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@@ -0,0 +1,33 @@
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __TEXTURE2_H__
#define __TEXTURE2_H__
#include "mynode.h"
class Texture2: public MyNode {
public:
Texture2() {}
Texture2(MyNode *n): MyNode(n) {}
virtual char *type() { return "Texture2"; }
virtual void accept(MyNodeVisitor *v) { v->applyTexture2(this); }
};
#endif

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@@ -0,0 +1,37 @@
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __TEXTURE_COORDINATE_H__
#define __TEXTURE_COORDINATE_H__
#include "mynode.h"
class TextureCoordinate: public MyNode {
TextureCoordList tcoords;
public:
TextureCoordinate() {}
TextureCoordinate(TextureCoordList *t) {
tcoords=*t;
}
virtual char *type() { return "TextureCoordinate"; }
virtual void accept(MyNodeVisitor *v) { v->applyTextureCoordinate(this); }
TextureCoordList getTextureCoords() { return tcoords; }
};
#endif

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@@ -0,0 +1,33 @@
/*
* osgDB::wrl - a VRML 1.0 loader for OpenSceneGraph
* Copyright (C) 2002 Ruben Lopez <ryu@gpul.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __TRANSFORM_H__
#define __TRANSFORM_H__
#include "mynode.h"
class Transform: public MyNode {
public:
Transform() {}
Transform(MyNode *n): MyNode(n) {}
virtual char *type() { return "Transform"; }
virtual void accept(MyNodeVisitor *v) { v->applyTransform(this); }
};
#endif