282 lines
11 KiB
C++
282 lines
11 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
|
|
*
|
|
* This library is open source and may be redistributed and/or modified under
|
|
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
|
|
* (at your option) any later version. The full license is in LICENSE file
|
|
* included with this distribution, and on the openscenegraph.org website.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* OpenSceneGraph Public License for more details.
|
|
*/
|
|
|
|
#ifndef OSGTEXT_FONT3D
|
|
#define OSGTEXT_FONT3D 1
|
|
|
|
#include <string>
|
|
#include <istream>
|
|
|
|
#include <osg/Vec2>
|
|
#include <osg/Geometry>
|
|
#include <osgDB/ReaderWriter>
|
|
#include <osgText/Export>
|
|
#include <osgText/KerningType>
|
|
|
|
#include <OpenThreads/Mutex>
|
|
|
|
namespace osgText {
|
|
|
|
class Font3D;
|
|
class Text3D;
|
|
|
|
/** Read a font from specified file. The filename may contain a path.
|
|
* It will search for the font file in the following places in this order:
|
|
* - In the current directory
|
|
* - All paths defined in OSG_FILE_PATH or OSGFILEPATH environment variable
|
|
* - Filename with path stripped: In the current directory
|
|
* - Filename with path stripped: All paths defined in OSG_FILE_PATH or OSGFILEPATH
|
|
*
|
|
* Then the file will be searched in OS specific directories in the following order:
|
|
* - Again in the current directory
|
|
* - Windows: In C:/winnt/fonts
|
|
* - Windows: In C:/windows/fonts
|
|
* - Windows: In the fonts directory of the windows install directory
|
|
* - Other OS: In /usr/share/fonts/ttf
|
|
* - Other OS: In /usr/share/fonts/ttf/western
|
|
* - Other OS: In /usr/share/fonts/ttf/decoratives
|
|
*
|
|
* If the given file could not be found, the path part will be stripped and
|
|
* the file will be searched again in the OS specific directories.
|
|
*/
|
|
extern OSGTEXT_EXPORT Font3D* readFont3DFile(const std::string& filename, const osgDB::ReaderWriter::Options* userOptions = 0);
|
|
|
|
/** read a font from specified stream.*/
|
|
extern OSGTEXT_EXPORT Font3D* readFont3DStream(std::istream& stream, const osgDB::ReaderWriter::Options* userOptions = 0);
|
|
|
|
extern OSGTEXT_EXPORT osg::ref_ptr<Font3D> readRefFont3DFile(const std::string& filename, const osgDB::ReaderWriter::Options* userOptions = 0);
|
|
|
|
extern OSGTEXT_EXPORT osg::ref_ptr<Font3D> readRefFont3DStream(std::istream& stream, const osgDB::ReaderWriter::Options* userOptions = 0);
|
|
|
|
extern OSGTEXT_EXPORT std::string findFont3DFile(const std::string& str);
|
|
|
|
/** Pure virtual base class for fonts.
|
|
* Concrete implementation are the DefaultFont found in src/osgText/DefaultFont.cpp
|
|
* and FreeTypeFont found in src/osgPlugins/freetype/FreeTypeFont.cpp*/
|
|
class OSGTEXT_EXPORT Font3D : public osg::Object
|
|
{
|
|
// declare the interface to a font.
|
|
public:
|
|
|
|
// forward declare nested classes.
|
|
class Glyph3D;
|
|
class Font3DImplementation;
|
|
|
|
public:
|
|
Font3D(Font3DImplementation* implementation=0);
|
|
|
|
virtual osg::Object* cloneType() const { return 0; } // cloneType() not appropriate
|
|
virtual osg::Object* clone(const osg::CopyOp&) const { return 0; } // clone() not appropriate
|
|
virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const Font3D*>(obj)!=NULL; }
|
|
virtual const char* className() const { return "Font3D"; }
|
|
virtual const char* libraryName() const { return "osgText"; }
|
|
|
|
virtual std::string getFileName() const;
|
|
|
|
unsigned int getFontWidth() const { return _width; }
|
|
unsigned int getFontHeight() const { return _height; }
|
|
unsigned int getFontDepth() const { return _depth; }
|
|
|
|
/** Get a kerning (adjustment of spacing of two adjacent character) for specified charcodes, w.r.t the current font size hint.*/
|
|
virtual osg::Vec2 getKerning(unsigned int leftcharcode,unsigned int rightcharcode, KerningType kerningType);
|
|
|
|
/** Get a Glyph for specified charcode, and the font size nearest to the current font size hint.*/
|
|
virtual Glyph3D* getGlyph(unsigned int charcode);
|
|
|
|
/** Return true if this font provides vertical alignments and spacing or glyphs.*/
|
|
virtual bool hasVertical() const;
|
|
|
|
/** Return the scale to apply on the glyph to have a charactere size equal to 1 */
|
|
virtual float getScale() const { return _implementation->getScale(); };
|
|
|
|
// make Text a friend to allow it add and remove its entry in the Font's _textList.
|
|
friend class Font3DImplementation;
|
|
|
|
void setImplementation(Font3DImplementation* implementation);
|
|
|
|
Font3DImplementation* getImplementation();
|
|
const Font3DImplementation* getImplementation() const;
|
|
|
|
/** Set whether to use a mutex to ensure ref() and unref() */
|
|
virtual void setThreadSafeRefUnref(bool threadSafe);
|
|
|
|
typedef OpenThreads::Mutex Font3DMutex;
|
|
|
|
protected:
|
|
|
|
virtual ~Font3D();
|
|
|
|
// void addGlyph(unsigned int width, unsigned int height, unsigned int charcode, Glyph* glyph);
|
|
void addGlyph(unsigned int charcode, Glyph3D* glyph);
|
|
|
|
// current active size of font
|
|
unsigned int _depth;
|
|
unsigned int _width;
|
|
unsigned int _height;
|
|
// unsigned int _margin;
|
|
// float _marginRatio;
|
|
|
|
typedef std::map<char, osg::ref_ptr<Glyph3D> > Glyph3DMap;
|
|
Glyph3DMap _glyph3DMap;
|
|
|
|
osg::ref_ptr<Font3DImplementation> _implementation;
|
|
|
|
|
|
// declare the nested classes.
|
|
public:
|
|
|
|
class Font3DImplementation : public osg::Referenced
|
|
{
|
|
public:
|
|
|
|
Font3DImplementation():
|
|
osg::Referenced(true),
|
|
_facade(0) {}
|
|
|
|
virtual std::string getFileName() const = 0;
|
|
|
|
/** Get a Glyph for specified charcode, and the font size nearest to the current font size hint.*/
|
|
virtual Glyph3D* getGlyph(unsigned int charcode) = 0;
|
|
|
|
/** Get a kerning (adjustment of spacing of two adjacent character) for specified charcodes, w.r.t the current font size hint.*/
|
|
virtual osg::Vec2 getKerning(unsigned int leftcharcode,unsigned int rightcharcode, KerningType kerningType) = 0;
|
|
|
|
/** Return true if this font provides vertical alignments and spacing or glyphs.*/
|
|
virtual bool hasVertical() const = 0;
|
|
|
|
virtual float getScale() const = 0;
|
|
|
|
void setFontWidth(unsigned int width) { _facade->_width = width; }
|
|
|
|
void setFontHeight(unsigned int height) { _facade->_height = height; }
|
|
|
|
void setFontDepth(unsigned int depth) { _facade->_depth = depth; }
|
|
|
|
// void addGlyph(unsigned int width, unsigned int height, unsigned int charcode, Glyph3D* glyph)
|
|
// {
|
|
// _facade->addGlyph(width, height, charcode, glyph);
|
|
// }
|
|
//
|
|
// void addGlyph(unsigned int charcode, Glyph3D* glyph)
|
|
// {
|
|
// _facade->addGlyph(charcode, glyph);
|
|
// }
|
|
|
|
Font3D* _facade;
|
|
};
|
|
|
|
class OSGTEXT_EXPORT Glyph3D : public osg::Referenced
|
|
{
|
|
public:
|
|
|
|
Glyph3D(unsigned int glyphCode):
|
|
osg::Referenced(true),
|
|
_glyphCode(glyphCode),
|
|
_horizontalBearing(0,0),
|
|
_horizontalAdvance(0),
|
|
_verticalBearing(0,0),
|
|
_verticalAdvance(0)
|
|
{}
|
|
|
|
|
|
/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
|
|
// virtual int compare(const osg::StateAttribute& rhs) const;
|
|
//
|
|
// virtual void apply(osg::State& state) const;
|
|
|
|
|
|
|
|
unsigned int getGlyphCode() const { return _glyphCode; }
|
|
|
|
void setHorizontalBearing(const osg::Vec2& bearing) { _horizontalBearing=bearing; }
|
|
const osg::Vec2 & getHorizontalBearing() const { return _horizontalBearing; }
|
|
|
|
void setHorizontalAdvance(float advance) { _horizontalAdvance=advance; }
|
|
float getHorizontalAdvance() const { return _horizontalAdvance; }
|
|
|
|
void setVerticalBearing(const osg::Vec2& bearing) { _verticalBearing=bearing; }
|
|
const osg::Vec2& getVerticalBearing() const { return _verticalBearing; }
|
|
|
|
void setVerticalAdvance(float advance) { _verticalAdvance=advance; }
|
|
float getVerticalAdvance() const { return _verticalAdvance; }
|
|
|
|
void setBoundingBox(osg::BoundingBox & bb) { _bb=bb; }
|
|
const osg::BoundingBox & getBoundingBox() const { return _bb; }
|
|
|
|
|
|
/** Set whether to use a mutex to ensure ref() and unref() are thread safe.*/
|
|
virtual void setThreadSafeRefUnref(bool threadSafe);
|
|
|
|
|
|
/** Get the PrimitiveSetList for the front face. */
|
|
osg::Geometry::PrimitiveSetList & getFrontPrimitiveSetList() { return _frontPrimitiveSetList; }
|
|
/** Get the PrimitiveSetList for the wall face. */
|
|
osg::Geometry::PrimitiveSetList & getWallPrimitiveSetList() { return _wallPrimitiveSetList; }
|
|
/** Get et the PrimitiveSetList for the back face. */
|
|
osg::Geometry::PrimitiveSetList & getBackPrimitiveSetList() { return _backPrimitiveSetList; }
|
|
|
|
/** Set the VertexArray of the glyph. */
|
|
void setVertexArray(osg::Vec3Array * va) { _vertexArray = va; }
|
|
/** Get the VertexArray of the glyph. */
|
|
osg::Vec3Array * getVertexArray() { return _vertexArray.get(); }
|
|
/** Get the NormalArray for the wall face. */
|
|
osg::Vec3Array * getNormalArray() { return _normalArray.get(); }
|
|
|
|
float getHorizontalWidth() { return (-_horizontalBearing.x() + _horizontalAdvance); }
|
|
float getHorizontalHeight() { return (-_horizontalBearing.y() + _bb.yMax()); }
|
|
float getVerticalWidth() { return (-_verticalBearing.x() + _bb.xMax()); }
|
|
float getVerticalHeight() { return (-_verticalBearing.y() + _verticalAdvance); }
|
|
|
|
void setWidth(float width) { _width = width; }
|
|
float getWidth() { return _width; }
|
|
|
|
void setHeight(float height) { _height = height; }
|
|
float getHeight() { return _height; }
|
|
|
|
protected:
|
|
|
|
virtual ~Glyph3D() {}
|
|
|
|
unsigned int _glyphCode;
|
|
|
|
osg::Vec2 _horizontalBearing;
|
|
float _horizontalAdvance;
|
|
|
|
osg::Vec2 _verticalBearing;
|
|
float _verticalAdvance;
|
|
|
|
osg::BoundingBox _bb;
|
|
// osg::Vec2 _advance;
|
|
|
|
float _width;
|
|
float _height;
|
|
|
|
|
|
osg::ref_ptr<osg::Vec3Array> _vertexArray;
|
|
osg::ref_ptr<osg::Vec3Array> _normalArray;
|
|
|
|
osg::Geometry::PrimitiveSetList _frontPrimitiveSetList;
|
|
osg::Geometry::PrimitiveSetList _wallPrimitiveSetList;
|
|
osg::Geometry::PrimitiveSetList _backPrimitiveSetList;
|
|
|
|
|
|
};
|
|
|
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
#endif
|