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From Romain Ouabdelkader, "This is a fix for osgText to calculate kerning and to load glyph3D with the text's font resolution.

Browse Source 
Font::getKerning(...), Font::getGlyph3D(...) doesn't ask for a font resolution so it uses the last font resolution requested by Font:: getGlyph(...).
This can leads to different results depending of the precedent call to Font::getGlyph(...).
See http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2016-January/271952.html for more infos.

This fix adds a font resolution parameter to Font::getKerning(...), Font::getGlyph3D(...) and to the font implementations.
This was made under the base revision r15182."
This commit is contained in:
Robert Osfield 2016-02-15 13:30:39 +00:00
parent 937ef73521
commit 67202b2662
13 changed files with 57 additions and 42 deletions
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4
examples/osgtext3D/TextNode.cpp
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@ -104,7 +104,7 @@ void Layout::layout(TextNode& text) const
}
else
{
osgText::Glyph3D* glyph = font->getGlyph3D(charcode);
osgText::Glyph3D* glyph = font->getGlyph3D(resolution, charcode);
OSG_NOTICE<<"pos = "<<pos<<", charcode="<<charcode<<", glyph="<<glyph<< std::endl;
if (glyph)
{
@ -116,7 +116,7 @@ void Layout::layout(TextNode& text) const
if (previousCharcode!=0 && charcode!=0)
{
osg::Vec2 offset = font->getKerning(previousCharcode, charcode, kerningType);
osg::Vec2 offset = font->getKerning(resolution, previousCharcode, charcode, kerningType);
OSG_NOTICE<<" offset = "<<offset<< std::endl;
pos.x() += offset.x();
pos.y() += offset.y();

4
include/osgQt/QFontImplementation
View File

@ -35,9 +35,9 @@ public:
virtual osgText::Glyph* getGlyph(const osgText::FontResolution& fontRes, unsigned int charcode);
virtual osgText::Glyph3D* getGlyph3D(unsigned int /*charcode*/) { return 0; }
virtual osgText::Glyph3D* getGlyph3D(const osgText::FontResolution& /*fontRes*/, unsigned int /*charcode*/) { return 0; }
virtual osg::Vec2 getKerning(unsigned int leftcharcode, unsigned int rightcharcode, osgText::KerningType kerningType);
virtual osg::Vec2 getKerning(const osgText::FontResolution& fontRes, unsigned int leftcharcode, unsigned int rightcharcode, osgText::KerningType kerningType);
virtual bool hasVertical() const;

15
include/osgText/Font
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@ -93,15 +93,15 @@ public:
const osg::StateSet* getStateSet() const { return _stateset.get(); }
/** 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 kerning (adjustment of spacing of two adjacent character) for specified charcodes and a font resolution.*/
virtual osg::Vec2 getKerning(const FontResolution& fontRes, 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 Glyph* getGlyph(const FontResolution& fontSize, unsigned int charcode);
/** Get a Glyph3D for specified charcode.*/
virtual Glyph3D* getGlyph3D(unsigned int charcode);
/** Get a Glyph3D for specified charcode and a font size.*/
virtual Glyph3D* getGlyph3D(const FontResolution& fontSize, unsigned int charcode);
/** Return true if this font provides vertical alignments and spacing or glyphs.*/
virtual bool hasVertical() const;
@ -181,6 +181,7 @@ protected:
typedef std::map< unsigned int, osg::ref_ptr<Glyph3D> > Glyph3DMap;
typedef std::map< FontResolution, GlyphMap > FontSizeGlyphMap;
typedef std::map< FontResolution, Glyph3DMap > FontSizeGlyph3DMap;
mutable OpenThreads::Mutex _glyphMapMutex;
@ -190,7 +191,7 @@ protected:
GlyphTextureList _glyphTextureList;
Glyph3DMap _glyph3DMap;
FontSizeGlyph3DMap _sizeGlyph3DMap;
// current active size of font
FontResolution _fontSize;
@ -228,10 +229,10 @@ public:
virtual Glyph* getGlyph(const FontResolution& fontRes, unsigned int charcode) = 0;
/** Get a Glyph3D for specified charcode.*/
virtual Glyph3D* getGlyph3D(unsigned int charcode) = 0;
virtual Glyph3D* getGlyph3D(const FontResolution& fontRes, 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;
virtual osg::Vec2 getKerning(const FontResolution& fontRes, 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;

8
src/osgPlugins/freetype/FreeTypeFont.cpp
View File

@ -413,10 +413,12 @@ osgText::Glyph* FreeTypeFont::getGlyph(const osgText::FontResolution& fontRes, u
}
osgText::Glyph3D * FreeTypeFont::getGlyph3D(unsigned int charcode)
osgText::Glyph3D * FreeTypeFont::getGlyph3D(const osgText::FontResolution& fontRes, unsigned int charcode)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(FreeTypeLibrary::instance()->getMutex());
setFontResolution(fontRes);
//
// GT: fix for symbol fonts (i.e. the Webdings font) as the wrong character are being
// returned, for symbol fonts in windows (FT_ENCONDING_MS_SYMBOL in freetype) the correct
@ -515,10 +517,12 @@ osgText::Glyph3D * FreeTypeFont::getGlyph3D(unsigned int charcode)
return glyph.release();
}
osg::Vec2 FreeTypeFont::getKerning(unsigned int leftcharcode,unsigned int rightcharcode, osgText::KerningType kerningType)
osg::Vec2 FreeTypeFont::getKerning(const osgText::FontResolution& fontRes, unsigned int leftcharcode, unsigned int rightcharcode, osgText::KerningType kerningType)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(FreeTypeLibrary::instance()->getMutex());
setFontResolution(fontRes);
if (!FT_HAS_KERNING(_face) || (kerningType == osgText::KERNING_NONE)) return osg::Vec2(0.0f,0.0f);
FT_Kerning_Mode mode = (kerningType==osgText::KERNING_DEFAULT) ? ft_kerning_default : ft_kerning_unfitted;

6
src/osgPlugins/freetype/FreeTypeFont.h
View File

@ -33,11 +33,11 @@ public:
virtual bool supportsMultipleFontResolutions() const { return true; }
virtual osgText::Glyph* getGlyph(const osgText::FontResolution& fontRes,unsigned int charcode);
virtual osgText::Glyph* getGlyph(const osgText::FontResolution& fontRes, unsigned int charcode);
virtual osgText::Glyph3D* getGlyph3D(unsigned int charcode);
virtual osgText::Glyph3D* getGlyph3D(const osgText::FontResolution& fontRes, unsigned int charcode);
virtual osg::Vec2 getKerning(unsigned int leftcharcode,unsigned int rightcharcode, osgText::KerningType _kerningType);
virtual osg::Vec2 getKerning(const osgText::FontResolution& fontRes, unsigned int leftcharcode, unsigned int rightcharcode, osgText::KerningType _kerningType);
virtual bool hasVertical() const;

2
src/osgPlugins/txf/TXFFont.cpp
View File

@ -120,7 +120,7 @@ TXFFont::hasVertical() const
}
osg::Vec2
TXFFont::getKerning(unsigned int, unsigned int, osgText::KerningType)
TXFFont::getKerning(const osgText::FontResolution&, unsigned int, unsigned int, osgText::KerningType)
{
return osg::Vec2(0, 0);
}

4
src/osgPlugins/txf/TXFFont.h
View File

@ -32,11 +32,11 @@ public:
virtual osgText::Glyph* getGlyph(const osgText::FontResolution& fontRes, unsigned int charcode);
virtual osgText::Glyph3D* getGlyph3D(unsigned int) { return 0; }
virtual osgText::Glyph3D* getGlyph3D(const osgText::FontResolution&, unsigned int) { return 0; }
virtual bool hasVertical() const;
virtual osg::Vec2 getKerning(unsigned int leftcharcode,unsigned int rightcharcode, osgText::KerningType kerningType);
virtual osg::Vec2 getKerning(const osgText::FontResolution& fontRes, unsigned int leftcharcode, unsigned int rightcharcode, osgText::KerningType kerningType);
bool loadFont(std::istream& stream);

2
src/osgQt/QFontImplementation.cpp
View File

@ -122,7 +122,7 @@ QFontImplementation::getGlyph(const osgText::FontResolution& fontRes, unsigned i
}
osg::Vec2
QFontImplementation::getKerning(unsigned int /*leftcharcode*/, unsigned int /*rightcharcode*/, osgText::KerningType /*kerningType*/)
QFontImplementation::getKerning(const osgText::FontResolution& /*fontRes*/, unsigned int /*leftcharcode*/, unsigned int /*rightcharcode*/, osgText::KerningType /*kerningType*/)
{
return osg::Vec2(0, 0);
}

2
src/osgText/DefaultFont.cpp
View File

@ -69,7 +69,7 @@ osgText::Glyph* DefaultFont::getGlyph(const FontResolution& fontRes, unsigned in
}
osg::Vec2 DefaultFont::getKerning(unsigned int,unsigned int, KerningType)
osg::Vec2 DefaultFont::getKerning(const osgText::FontResolution&, unsigned int, unsigned int, KerningType)
{
// no kerning on default font.
return osg::Vec2(0.0f,0.0f);

4
src/osgText/DefaultFont.h
View File

@ -34,9 +34,9 @@ public:
virtual osgText::Glyph* getGlyph(const FontResolution& fontRes, unsigned int charcode);
virtual osgText::Glyph3D* getGlyph3D(unsigned int /*charcode*/) { return 0; }
virtual osgText::Glyph3D* getGlyph3D(const osgText::FontResolution& /*fontRes*/, unsigned int /*charcode*/) { return 0; }
virtual osg::Vec2 getKerning(unsigned int leftcharcode,unsigned int rightcharcode, KerningType kerningType);
virtual osg::Vec2 getKerning(const osgText::FontResolution& fontRes, unsigned int leftcharcode, unsigned int rightcharcode, KerningType kerningType);
virtual bool hasVertical() const;

26
src/osgText/Font.cpp
View File

@ -377,22 +377,32 @@ Glyph* Font::getGlyph(const FontResolution& fontRes, unsigned int charcode)
else return 0;
}
Glyph3D* Font::getGlyph3D(unsigned int charcode)
Glyph3D* Font::getGlyph3D(const FontResolution &fontRes, unsigned int charcode)
{
if (!_implementation) return 0;
FontResolution fontResUsed(0,0);
if (_implementation->supportsMultipleFontResolutions()) fontResUsed = fontRes;
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_glyphMapMutex);
Glyph3DMap::iterator itr = _glyph3DMap.find(charcode);
if (itr!=_glyph3DMap.end()) return itr->second.get();
FontSizeGlyph3DMap::iterator itr = _sizeGlyph3DMap.find(fontResUsed);
if (itr!=_sizeGlyph3DMap.end())
{
Glyph3DMap& glyphmap = itr->second;
Glyph3DMap::iterator gitr = glyphmap.find(charcode);
if (gitr!=glyphmap.end()) return gitr->second.get();
}
}
Glyph3D* glyph = _implementation.valid() ? _implementation->getGlyph3D(charcode) : 0;
Glyph3D* glyph = _implementation->getGlyph3D(fontResUsed, charcode);
if (glyph)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_glyphMapMutex);
_glyph3DMap[charcode] = glyph;
_sizeGlyph3DMap[fontResUsed][charcode] = glyph;
return glyph;
}
return 0;
else return 0;
}
void Font::setThreadSafeRefUnref(bool threadSafe)
@ -437,9 +447,9 @@ void Font::releaseGLObjects(osg::State* state) const
// const_cast<Font*>(this)->_sizeGlyphMap.clear();
}
osg::Vec2 Font::getKerning(unsigned int leftcharcode,unsigned int rightcharcode, KerningType kerningType)
osg::Vec2 Font::getKerning(const FontResolution& fontRes, unsigned int leftcharcode, unsigned int rightcharcode, KerningType kerningType)
{
if (_implementation.valid()) return _implementation->getKerning(leftcharcode,rightcharcode,kerningType);
if (_implementation.valid()) return _implementation->getKerning(fontRes, leftcharcode, rightcharcode, kerningType);
else return osg::Vec2(0.0f,0.0f);
}

8
src/osgText/Text.cpp
View File

@ -132,14 +132,14 @@ String::iterator Text::computeLastCharacterOnLine(osg::Vec2& cursor, String::ite
{
case LEFT_TO_RIGHT:
{
osg::Vec2 delta(activefont->getKerning(previous_charcode,charcode,_kerningType));
osg::Vec2 delta(activefont->getKerning(_fontSize, previous_charcode, charcode, _kerningType));
cursor.x() += delta.x() * wr;
cursor.y() += delta.y() * hr;
break;
}
case RIGHT_TO_LEFT:
{
osg::Vec2 delta(activefont->getKerning(charcode,previous_charcode,_kerningType));
osg::Vec2 delta(activefont->getKerning(_fontSize, charcode, previous_charcode, _kerningType));
cursor.x() -= delta.x() * wr;
cursor.y() -= delta.y() * hr;
break;
@ -396,14 +396,14 @@ void Text::computeGlyphRepresentation()
{
case LEFT_TO_RIGHT:
{
osg::Vec2 delta(activefont->getKerning(previous_charcode,charcode,_kerningType));
osg::Vec2 delta(activefont->getKerning(_fontSize, previous_charcode, charcode, _kerningType));
cursor.x() += delta.x() * wr;
cursor.y() += delta.y() * hr;
break;
}
case RIGHT_TO_LEFT:
{
osg::Vec2 delta(activefont->getKerning(charcode,previous_charcode,_kerningType));
osg::Vec2 delta(activefont->getKerning(_fontSize, charcode, previous_charcode, _kerningType));
cursor.x() -= delta.x() * wr;
cursor.y() -= delta.y() * hr;
break;

14
src/osgText/Text3D.cpp
View File

@ -135,7 +135,7 @@ String::iterator Text3D::computeLastCharacterOnLine(osg::Vec2& cursor, String::i
return lastChar;
}
Glyph3D* glyph = _font->getGlyph3D(charcode);
Glyph3D* glyph = _font->getGlyph3D(_fontSize, charcode);
if (glyph)
{
const osg::BoundingBox & bb = glyph->getBoundingBox();
@ -152,14 +152,14 @@ String::iterator Text3D::computeLastCharacterOnLine(osg::Vec2& cursor, String::i
{
case LEFT_TO_RIGHT:
{
osg::Vec2 delta(_font->getKerning(previous_charcode,charcode,_kerningType));
osg::Vec2 delta(_font->getKerning(_fontSize, previous_charcode, charcode, _kerningType));
cursor.x() += delta.x() * wr;
cursor.y() += delta.y() * hr;
break;
}
case RIGHT_TO_LEFT:
{
osg::Vec2 delta(_font->getKerning(charcode,previous_charcode,_kerningType));
osg::Vec2 delta(_font->getKerning(_fontSize, charcode, previous_charcode, _kerningType));
cursor.x() -= delta.x() * wr;
cursor.y() -= delta.y() * hr;
break;
@ -226,7 +226,7 @@ String::iterator Text3D::computeLastCharacterOnLine(osg::Vec2& cursor, String::i
// Subtract off glyphs from the cursor position (to correctly center text)
if(*prevChar != '-')
{
Glyph3D* glyph = _font->getGlyph3D(*prevChar);
Glyph3D* glyph = _font->getGlyph3D(_fontSize, *prevChar);
if (glyph)
{
switch(_layout)
@ -299,7 +299,7 @@ void Text3D::computeGlyphRepresentation()
{
unsigned int charcode = *itr;
Glyph3D* glyph = _font->getGlyph3D(charcode);
Glyph3D* glyph = _font->getGlyph3D(_fontSize, charcode);
if (glyph)
{
const osg::BoundingBox & bb = glyph->getBoundingBox();
@ -316,14 +316,14 @@ void Text3D::computeGlyphRepresentation()
{
case LEFT_TO_RIGHT:
{
osg::Vec2 delta(_font->getKerning(previous_charcode,charcode,_kerningType));
osg::Vec2 delta(_font->getKerning(_fontSize, previous_charcode, charcode, _kerningType));
cursor.x() += delta.x() * wr;
cursor.y() += delta.y() * hr;
break;
}
case RIGHT_TO_LEFT:
{
osg::Vec2 delta(_font->getKerning(charcode,previous_charcode,_kerningType));
osg::Vec2 delta(_font->getKerning(_fontSize, charcode, previous_charcode, _kerningType));
cursor.x() -= delta.x() * wr;
cursor.y() -= delta.y() * hr;
break;