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Refactored osgText::Font so that it now supports both 2D and 3D glyphs.

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Added TextNode.h and TextNode.cpp to examples/osgtext3D in prep for introducing the new node to osgText library
This commit is contained in:
Robert Osfield
2010-09-03 08:26:46 +00:00
parent d1e90b6878
commit 8c3e3055e7
26 changed files with 1396 additions and 398 deletions
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119
src/osgText/Font.cpp
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@@ -27,11 +27,23 @@
#include <OpenThreads/ReentrantMutex>
#include "DefaultFont.h"
using namespace osgText;
using namespace std;
static osg::ApplicationUsageProxy Font_e0(osg::ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_TEXT_INCREMENTAL_SUBLOADING <type>","ON | OFF");
osg::ref_ptr<Font>& Font::getDefaultFont()
{
static OpenThreads::Mutex s_DefaultFontMutex;
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_DefaultFontMutex);
static osg::ref_ptr<Font> s_defaultFont = new DefaultFont;
return s_defaultFont;
}
static OpenThreads::ReentrantMutex s_FontFileMutex;
std::string osgText::findFontFile(const std::string& str)
@@ -210,7 +222,9 @@ Font::Font(FontImplementation* implementation):
_textureWidthHint(1024),
_textureHeightHint(1024),
_minFilterHint(osg::Texture::LINEAR_MIPMAP_LINEAR),
_magFilterHint(osg::Texture::LINEAR)
_magFilterHint(osg::Texture::LINEAR),
_depth(1),
_numCurveSamples(10)
{
setImplementation(implementation);
@@ -326,23 +340,46 @@ osg::Texture::FilterMode Font::getMagFilterHint() const
}
Font::Glyph* Font::getGlyph(const FontResolution& fontRes, unsigned int charcode)
Glyph* Font::getGlyph(const FontResolution& fontRes, unsigned int charcode)
{
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_glyphMapMutex);
FontSizeGlyphMap::iterator itr = _sizeGlyphMap.find(fontRes);
if (itr!=_sizeGlyphMap.end())
{
GlyphMap& glyphmap = itr->second;
GlyphMap& glyphmap = itr->second;
GlyphMap::iterator gitr = glyphmap.find(charcode);
if (gitr!=glyphmap.end()) return gitr->second.get();
}
}
if (_implementation.valid()) return _implementation->getGlyph(fontRes, charcode);
Glyph* glyph = _implementation.valid() ? _implementation->getGlyph(fontRes, charcode) : 0;
if (glyph)
{
addGlyph(fontRes, charcode, glyph);
return glyph;
}
else return 0;
}
Glyph3D* Font::getGlyph3D(unsigned int charcode)
{
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_glyphMapMutex);
Glyph3DMap::iterator itr = _glyph3DMap.find(charcode);
if (itr!=_glyph3DMap.end()) return itr->second.get();
}
Glyph3D* glyph = _implementation.valid() ? _implementation->getGlyph3D(charcode) : 0;
if (glyph)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_glyphMapMutex);
_glyph3DMap[charcode] = glyph;
return glyph;
}
return 0;
}
void Font::setThreadSafeRefUnref(bool threadSafe)
{
osg::Object::setThreadSafeRefUnref(threadSafe);
@@ -454,7 +491,7 @@ void Font::addGlyph(const FontResolution& fontRes, unsigned int charcode, Glyph*
}
Font::GlyphTexture::GlyphTexture():
GlyphTexture::GlyphTexture():
_margin(1),
_marginRatio(0.02f),
_usedY(0),
@@ -465,12 +502,12 @@ Font::GlyphTexture::GlyphTexture():
setWrap(WRAP_T, CLAMP_TO_EDGE);
}
Font::GlyphTexture::~GlyphTexture()
GlyphTexture::~GlyphTexture()
{
}
// return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.
int Font::GlyphTexture::compare(const osg::StateAttribute& rhs) const
int GlyphTexture::compare(const osg::StateAttribute& rhs) const
{
if (this<&rhs) return -1;
else if (this>&rhs) return 1;
@@ -478,7 +515,7 @@ int Font::GlyphTexture::compare(const osg::StateAttribute& rhs) const
}
bool Font::GlyphTexture::getSpaceForGlyph(Glyph* glyph, int& posX, int& posY)
bool GlyphTexture::getSpaceForGlyph(Glyph* glyph, int& posX, int& posY)
{
int maxAxis = std::max(glyph->s(), glyph->t());
int margin = _margin + (int)((float)maxAxis * _marginRatio);
@@ -525,7 +562,7 @@ bool Font::GlyphTexture::getSpaceForGlyph(Glyph* glyph, int& posX, int& posY)
return false;
}
void Font::GlyphTexture::addGlyph(Glyph* glyph, int posX, int posY)
void GlyphTexture::addGlyph(Glyph* glyph, int posX, int posY)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
@@ -545,7 +582,7 @@ void Font::GlyphTexture::addGlyph(Glyph* glyph, int posX, int posY)
static_cast<float>(posY+glyph->t())/static_cast<float>(getTextureHeight()) ) );
}
void Font::GlyphTexture::apply(osg::State& state) const
void GlyphTexture::apply(osg::State& state) const
{
// get the contextID (user defined ID of 0 upwards) for the
// current OpenGL context.
@@ -797,12 +834,12 @@ void Font::GlyphTexture::apply(osg::State& state) const
}
void Font::GlyphTexture::setThreadSafeRefUnref(bool threadSafe)
void GlyphTexture::setThreadSafeRefUnref(bool threadSafe)
{
osg::Texture2D::setThreadSafeRefUnref(threadSafe);
}
void Font::GlyphTexture::resizeGLObjectBuffers(unsigned int maxSize)
void GlyphTexture::resizeGLObjectBuffers(unsigned int maxSize)
{
osg::Texture2D::resizeGLObjectBuffers(maxSize);
_glyphsToSubload.resize(maxSize);
@@ -810,7 +847,7 @@ void Font::GlyphTexture::resizeGLObjectBuffers(unsigned int maxSize)
// all the methods in Font::Glyph have been made non inline because VisualStudio6.0 is STUPID, STUPID, STUPID PILE OF JUNK.
Font::Glyph::Glyph(unsigned int glyphCode):
Glyph::Glyph(unsigned int glyphCode):
_font(0),
_glyphCode(glyphCode),
_horizontalBearing(0.0f,0.f),
@@ -826,53 +863,53 @@ Font::Glyph::Glyph(unsigned int glyphCode):
setThreadSafeRefUnref(true);
}
Font::Glyph::~Glyph()
Glyph::~Glyph()
{
}
void Font::Glyph::setHorizontalBearing(const osg::Vec2& bearing) { _horizontalBearing=bearing; }
const osg::Vec2& Font::Glyph::getHorizontalBearing() const { return _horizontalBearing; }
void Glyph::setHorizontalBearing(const osg::Vec2& bearing) { _horizontalBearing=bearing; }
const osg::Vec2& Glyph::getHorizontalBearing() const { return _horizontalBearing; }
void Font::Glyph::setHorizontalAdvance(float advance) { _horizontalAdvance=advance; }
float Font::Glyph::getHorizontalAdvance() const { return _horizontalAdvance; }
void Glyph::setHorizontalAdvance(float advance) { _horizontalAdvance=advance; }
float Glyph::getHorizontalAdvance() const { return _horizontalAdvance; }
void Font::Glyph::setVerticalBearing(const osg::Vec2& bearing) { _verticalBearing=bearing; }
const osg::Vec2& Font::Glyph::getVerticalBearing() const { return _verticalBearing; }
void Glyph::setVerticalBearing(const osg::Vec2& bearing) { _verticalBearing=bearing; }
const osg::Vec2& Glyph::getVerticalBearing() const { return _verticalBearing; }
void Font::Glyph::setVerticalAdvance(float advance) { _verticalAdvance=advance; }
float Font::Glyph::getVerticalAdvance() const { return _verticalAdvance; }
void Glyph::setVerticalAdvance(float advance) { _verticalAdvance=advance; }
float Glyph::getVerticalAdvance() const { return _verticalAdvance; }
void Font::Glyph::setTexture(GlyphTexture* texture) { _texture = texture; }
Font::GlyphTexture* Font::Glyph::getTexture() { return _texture; }
const Font::GlyphTexture* Font::Glyph::getTexture() const { return _texture; }
void Glyph::setTexture(GlyphTexture* texture) { _texture = texture; }
GlyphTexture* Glyph::getTexture() { return _texture; }
const GlyphTexture* Glyph::getTexture() const { return _texture; }
void Font::Glyph::setTexturePosition(int posX,int posY) { _texturePosX = posX; _texturePosY = posY; }
int Font::Glyph::getTexturePositionX() const { return _texturePosX; }
int Font::Glyph::getTexturePositionY() const { return _texturePosY; }
void Glyph::setTexturePosition(int posX,int posY) { _texturePosX = posX; _texturePosY = posY; }
int Glyph::getTexturePositionX() const { return _texturePosX; }
int Glyph::getTexturePositionY() const { return _texturePosY; }
void Font::Glyph::setMinTexCoord(const osg::Vec2& coord) { _minTexCoord=coord; }
const osg::Vec2& Font::Glyph::getMinTexCoord() const { return _minTexCoord; }
void Glyph::setMinTexCoord(const osg::Vec2& coord) { _minTexCoord=coord; }
const osg::Vec2& Glyph::getMinTexCoord() const { return _minTexCoord; }
void Font::Glyph::setMaxTexCoord(const osg::Vec2& coord) { _maxTexCoord=coord; }
const osg::Vec2& Font::Glyph::getMaxTexCoord() const { return _maxTexCoord; }
void Glyph::setMaxTexCoord(const osg::Vec2& coord) { _maxTexCoord=coord; }
const osg::Vec2& Glyph::getMaxTexCoord() const { return _maxTexCoord; }
void Font::Glyph::subload() const
void Glyph::subload() const
{
GLenum errorNo = glGetError();
if (errorNo!=GL_NO_ERROR)
{
#ifdef OSG_GLU_AVAILABLE
const GLubyte* msg = gluErrorString(errorNo);
if (msg) { OSG_WARN<<"before Font::Glyph::subload(): detected OpenGL error: "<<msg<<std::endl; }
else { OSG_WARN<<"before Font::Glyph::subload(): detected OpenGL error number: "<<errorNo<<std::endl; }
if (msg) { OSG_WARN<<"before Glyph::subload(): detected OpenGL error: "<<msg<<std::endl; }
else { OSG_WARN<<"before Glyph::subload(): detected OpenGL error number: "<<errorNo<<std::endl; }
#else
OSG_WARN<<"before Font::Glyph::subload(): detected OpenGL error number: "<<errorNo<<std::endl;
OSG_WARN<<"before Glyph::subload(): detected OpenGL error number: "<<errorNo<<std::endl;
#endif
}
if(s() <= 0 || t() <= 0)
{
OSG_INFO<<"Font::Glyph::subload(): texture sub-image width and/or height of 0, ignoring operation."<<std::endl;
OSG_INFO<<"Glyph::subload(): texture sub-image width and/or height of 0, ignoring operation."<<std::endl;
return;
}
@@ -892,10 +929,10 @@ void Font::Glyph::subload() const
#ifdef OSG_GLU_AVAILABLE
const GLubyte* msg = gluErrorString(errorNo);
if (msg) { OSG_WARN<<"after Font::Glyph::subload() : detected OpenGL error: "<<msg<<std::endl; }
else { OSG_WARN<<"after Font::Glyph::subload() : detected OpenGL error number: "<<errorNo<<std::endl; }
if (msg) { OSG_WARN<<"after Glyph::subload() : detected OpenGL error: "<<msg<<std::endl; }
else { OSG_WARN<<"after Glyph::subload() : detected OpenGL error number: "<<errorNo<<std::endl; }
#else
OSG_WARN<<"after Font::Glyph::subload() : detected OpenGL error number: "<<errorNo<<std::endl;
OSG_WARN<<"after Glyph::subload() : detected OpenGL error number: "<<errorNo<<std::endl;
#endif
OSG_WARN<< "\tglTexSubImage2D(0x"<<hex<<GL_TEXTURE_2D<<dec<<" ,"<<0<<"\t"<<std::endl<<