First cut of new osgText implementation.
This commit is contained in:
Robert Osfield
@@ -10,173 +10,203 @@
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
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//Distributed under the terms of the GNU Library General Public License (LGPL)
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//as published by the Free Software Foundation.
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/* --------------------------------------------------------------------------
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*
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* openscenegraph textLib / FTGL wrapper (http://homepages.paradise.net.nz/henryj/code/)
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*
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* --------------------------------------------------------------------------
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*
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* prog: max rheiner;mrn@paus.ch
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* date: 4/25/2001 (m/d/y)
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*
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* --------------------------------------------------------------------------
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*
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* --------------------------------------------------------------------------
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*/
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#ifndef OSGTEXT_TEXT
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#define OSGTEXT_TEXT 1
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#define OSGTEXT_TEXT 1
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#include <osg/Drawable>
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#include <osg/GL>
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#include <osg/Vec3>
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#include <osg/Vec2>
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#include <osg/Quat>
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#include <osgText/Font>
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#include <string>
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namespace osgText {
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class OSGTEXT_EXPORT Text : public osg::Drawable
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{
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public:
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public:
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enum AlignmentType
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{ // from left to right, top to bottom
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LEFT_TOP,
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LEFT_CENTER,
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LEFT_BOTTOM,
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Text();
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Text(const Text& text,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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CENTER_TOP,
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CENTER_CENTER,
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CENTER_BOTTOM,
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RIGHT_TOP,
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RIGHT_CENTER,
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RIGHT_BOTTOM,
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};
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enum BoundingBoxType
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{
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GEOMETRY,
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GLYPH,
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};
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enum DrawModeType
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{ // from left to right, top to bottom
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TEXT = 1<<0,
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BOUNDINGBOX = 1<<1,
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ALIGNMENT = 1<<2,
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DEFAULT = TEXT,
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};
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enum AxisAlignment
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{
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XY_PLANE,
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XZ_PLANE,
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YZ_PLANE
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};
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Text();
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Text(const Text& text,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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Text(Font* font);
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virtual osg::Object* cloneType() const { return new Text(); }
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virtual osg::Object* clone(const osg::CopyOp& copyop) const { return new Text(*this,copyop); }
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virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const Text*>(obj)!=NULL; }
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virtual const char* className() const { return "Text"; }
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virtual const char* libraryName() const { return "osgText"; }
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void setPosition(const osg::Vec2& pos);
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void setPosition(const osg::Vec3& pos);
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const osg::Vec3& getPosition() const { return _pos; }
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virtual osg::Object* cloneType() const { return new Text(); }
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virtual osg::Object* clone(const osg::CopyOp& copyop) const { return new Text(*this,copyop); }
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virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const Text*>(obj)!=NULL; }
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virtual const char* className() const { return "Text"; }
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virtual const char* libraryName() const { return "osgText"; }
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void setColor(const osg::Vec4& color) { _color = color; }
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osg::Vec4& getColor() { return _color; }
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const osg::Vec4& getColor() const { return _color; }
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/** Set the Font to use to render the text.
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* setFont(0) sets the use of the default font.*/
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void setFont(Font* font=0);
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/** Set the font, loaded from the specified front file, to use to render the text,
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* setFont("") sets the use of the default font.*/
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void setFont(const std::string& fontfile);
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/** Get the font. Return 0 if default is being used.*/
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const Font* getFont() const { return _font.get(); }
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/** Set the Font reference width and height resolution in texels.
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* Note, the size may not be supported by current font,
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* the closest supported font size will be selected.*/
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void setFontSize(unsigned int width, unsigned int height);
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unsigned int getFontWidth() const { return _fontWidth; }
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unsigned int getFontHeight() const { return _fontWidth; }
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/** TextString is a general purpose vector of char codes (unsigned int's)
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* which is used internally by Text to represent strings.*/
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typedef std::vector<unsigned int> TextString;
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/** Set the text using a TextString.*/
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void setText(const TextString& text);
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/** Set the text using a std::string,
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* which is converted to an internal TextString.*/
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void setText(const std::string& text);
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/** Set the text using a wchar_t string,
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* which is converted to an internal TextString.*/
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void setText(const wchar_t* text);
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/** Get the const text string.*/
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const TextString& getText() const { return _text; }
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void setDrawMode(int mode) { _drawMode=mode; }
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int getDrawMode() const { return _drawMode; }
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/** Set the rendered character size in object coordinates.*/
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void setCharacterSize(float height,float ascpectRatio=1.0f);
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float getCharacterHeight() const { return _characterHeight; }
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float getCharacterAspectRatio() const { return _characterAspectRatio; }
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void setBoundingBox(int mode);
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int getBoundingBox() const { return _boundingBoxType; }
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void setAlignment(int alignment);
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int getAlignment() const { return _alignment; }
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void setAxisAlignment(AxisAlignment axis) { _axisAlignment = axis; dirtyDisplayList(); }
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AxisAlignment getAxisAlignment() const { return _axisAlignment; }
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/** Set the position of text.*/
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void setPosition(const osg::Vec3& pos);
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/** Get the position of text.*/
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const osg::Vec3& getPosition() const { return _position; }
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void setFont(Font* font);
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Font* getFont() { return _font.get(); }
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const Font* getFont() const { return _font.get(); }
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enum AlignmentType
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{
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LEFT_TOP,
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LEFT_CENTER,
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LEFT_BOTTOM,
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void setText(const char* text);
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void setText(const std::string& text);
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const std::string& getText() const { return _text; }
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void setText(const wchar_t* text);
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CENTER_TOP,
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CENTER_CENTER,
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CENTER_BOTTOM,
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virtual bool supports(PrimitiveFunctor& pf) const;
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virtual void accept(PrimitiveFunctor& pf) const;
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RIGHT_TOP,
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RIGHT_CENTER,
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RIGHT_BOTTOM,
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BASE_LINE /// default.
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};
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void setAlignment(AlignmentType alignment);
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virtual void drawImplementation(osg::State& state) const;
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virtual void drawBoundingBox(void) const;
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virtual void drawAlignment(void) const;
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AlignmentType getAlignment() const { return _alignment; }
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const osg::Vec3& getAlignmentPos() const { return _alignmentPos; };
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void setEncodedText(EncodedText* encodedText) { _encodedText = encodedText; }
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const EncodedText* getEncodedText() const { return _encodedText.get(); }
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enum AxisAlignment
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{
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XY_PLANE,
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XZ_PLANE,
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YZ_PLANE,
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SCREEN
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};
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/// override the compile to set up the alignment etc.
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virtual void compile(osg::State& state) const;
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void setAxisAlignment(AxisAlignment axis);
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AxisAlignment getAxisAlignment() const { return _axisAlignment; }
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protected:
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enum FontType
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{
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UNDEF,
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BITMAP,
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PIXMAP,
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OUTLINE,
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POLYGON,
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TEXTURE,
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};
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void setRotation(const osg::Quat& quat);
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const osg::Quat& getRotation() const { return _rotation; }
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virtual ~Text();
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virtual void setDefaults(void);
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virtual bool computeBound(void) const;
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virtual void calcBounds(osg::Vec3* min,osg::Vec3* max) const;
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void initAlignment(osg::Vec3* min,osg::Vec3* max);
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bool initAlignment(void);
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enum Layout
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{
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LEFT_TO_RIGHT, /// default
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RIGHT_TO_LEFT,
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VERTICAL
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};
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void setLayout(Layout layout);
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Layout getLayout() const { return _layout; }
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osg::ref_ptr<Font> _font;
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bool _init;
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bool _initAlignment;
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std::string _text;
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int _fontType;
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int _alignment;
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int _drawMode;
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int _boundingBoxType;
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AxisAlignment _axisAlignment;
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void setColor(const osg::Vec4& color);
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const osg::Vec4& getColor() const { return _color; }
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enum DrawModeMask
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{
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TEXT = 1, /// default
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BOUNDINGBOX = 2,
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ALIGNMENT = 4
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};
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void setDrawMode(unsigned int mode) { _drawMode=mode; }
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unsigned int getDrawMode() const { return _drawMode; }
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/** Draw the text.*/
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virtual void drawImplementation(osg::State& state) const;
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protected:
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virtual ~Text();
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virtual bool computeBound() const;
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Font* getActiveFont();
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const Font* getActiveFont() const;
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// members which have public access.
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osg::ref_ptr<Font> _font;
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unsigned int _fontWidth;
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unsigned int _fontHeight;
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float _characterHeight;
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float _characterAspectRatio;
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TextString _text;
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osg::Vec3 _position;
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AlignmentType _alignment;
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AxisAlignment _axisAlignment;
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osg::Quat _rotation;
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Layout _layout;
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osg::Vec4 _color;
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unsigned int _drawMode;
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// internal structures, variable and methods used for rendering of characters.
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struct GlyphQuads
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{
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typedef std::vector<osg::Vec2> Coords;
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typedef std::vector<osg::Vec2> TexCoords;
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Coords _coords;
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TexCoords _texcoords;
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};
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typedef std::map<osg::ref_ptr<osg::StateSet>,GlyphQuads> TextureGlyphQuadMap;
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// iternal map used for rendering. Set up by the computeGlyphRepresentation() method.
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TextureGlyphQuadMap _textureGlyphQuadMap;
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mutable osg::BoundingBox _textBB;
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void computeGlyphRepresentation();
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osg::ref_ptr<EncodedText> _encodedText;
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osg::Vec3 _pos;
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osg::Vec3 _alignmentPos;
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osg::Vec4 _color;
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};
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}
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#endif // OSGTEXT_TEXT
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#endif
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