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Improvements to the Text .osg support.

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This commit is contained in:
Robert Osfield 2003-03-10 16:40:26 +00:00
parent bc35d8d33b
commit 06fb808ad3
10 changed files with 279 additions and 40 deletions
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2
include/osg/ShapeDrawable
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@ -135,7 +135,7 @@ class SG_EXPORT ShapeDrawable : public Drawable
*/
virtual void drawImplementation(State& state) const;
/** return false, osg::ProceduralGeoemtry does not support accept(AttributeFunctor&).*/
/** return false, osg::ShapeDrawable does not support accept(AttributeFunctor&).*/
virtual bool supports(AttributeFunctor&) const { return false; }
/** return true, osg::ShapeDrawable does support accept(ConstAttributeFunctor&).*/

2
include/osgDB/Input
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@ -51,7 +51,7 @@ class OSGDB_EXPORT Input : public FieldReaderIterator
private:
typedef std::map<std::string,osg::Object*> UniqueIDToObjectMapping;
typedef std::map< std::string, osg::ref_ptr<osg::Object> > UniqueIDToObjectMapping;
UniqueIDToObjectMapping _uniqueIDToObjectMap;
};

16
include/osgText/Text
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@ -183,6 +183,22 @@ public:
/** Draw the text.*/
virtual void drawImplementation(osg::State& state) const;
/** return false, osgText::Text does not support accept(AttributeFunctor&).*/
virtual bool supports(osg::Drawable::AttributeFunctor&) const { return false; }
/** return true, osgText::Text does support accept(ConstAttributeFunctor&).*/
virtual bool supports(osg::Drawable::ConstAttributeFunctor&) const { return true; }
/** accept an ConstAttributeFunctor and call its methods to tell it about the interal attributes that this Drawable has.*/
virtual void accept(osg::Drawable::ConstAttributeFunctor& af) const;
/** return true, osgText::Text does support accept(PrimitiveFunctor&) .*/
virtual bool supports(osg::Drawable::PrimitiveFunctor&) const { return true; }
/** accept a PrimtiveFunctor and call its methods to tell it about the interal primtives that this Drawable has.*/
virtual void accept(osg::Drawable::PrimitiveFunctor& pf) const;
// make Font a friend to allow it set the _font to 0 if the font is
// forcefully unloaded.
friend class Font;

2
src/osgDB/Input.cpp
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@ -31,7 +31,7 @@ Input::~Input()
osg::Object* Input::getObjectForUniqueID(const std::string& uniqueID)
{
UniqueIDToObjectMapping::iterator fitr = _uniqueIDToObjectMap.find(uniqueID);
if (fitr != _uniqueIDToObjectMap.end()) return (*fitr).second;
if (fitr != _uniqueIDToObjectMap.end()) return (*fitr).second.get();
else return NULL;
}

2
src/osgDB/Registry.cpp
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@ -569,7 +569,7 @@ osg::Object* Registry::readObjectOfType(const osg::Object& compObj,Input& fr)
if (fr[1].isString())
{
Object* obj = fr.getObjectForUniqueID(fr[1].getStr());
if (compObj.isSameKindAs(obj))
if (obj && compObj.isSameKindAs(obj))
{
fr+=2;
return obj;

2
src/osgPlugins/freetype/Makefile
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@ -6,7 +6,7 @@ CXXFILES =\
FreeTypeFont.cpp\
ReaderWriterFreeType.cpp\
LIBS += $(OSG_LIBS) $(FREETYPE_LIB) $(OTHER_LIBS)
LIBS += -losgText $(OSG_LIBS) $(FREETYPE_LIB) $(OTHER_LIBS)
ifneq ($(OS),HP-UX)
INC += -I$(OSGHOME)/include \

234
src/osgPlugins/osgText/IO_Text.cpp
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@ -10,6 +10,7 @@
#include <osgDB/Registry>
#include <osgDB/Input>
#include <osgDB/Output>
#include <osgDB/ParameterOutput>
bool Text_readLocalData(osg::Object &obj, osgDB::Input &fr);
bool Text_writeLocalData(const osg::Object &obj, osgDB::Output &fw);
@ -28,10 +29,118 @@ bool Text_readLocalData(osg::Object &obj, osgDB::Input &fr)
osgText::Text &text = static_cast<osgText::Text &>(obj);
bool itAdvanced = false;
if (fr.matchSequence("font %w"))
{
text.setFont(fr[1].getStr());
fr += 2;
itAdvanced = true;
}
if (fr[0].matchWord("fontSize"))
{
unsigned int width;
unsigned int height;
if (fr[1].getUInt(width) && fr[2].getUInt(height))
{
text.setFontSize(width,height);
fr += 3;
itAdvanced = true;
}
}
if (fr[0].matchWord("characterSize"))
{
float height;
float aspectRatio;
if (fr[1].getFloat(height) && fr[2].getFloat(aspectRatio))
{
text.setCharacterSize(height,aspectRatio);
fr += 3;
itAdvanced = true;
}
}
// maximum dimentsions of text box.
if (fr[0].matchWord("maximumWidth"))
{
float width;
if (fr[1].getFloat(width))
{
text.setMaximumWidth(width);
fr += 2;
itAdvanced = true;
}
}
if (fr[0].matchWord("maximumHeight"))
{
float height;
if (fr[1].getFloat(height))
{
text.setMaximumWidth(height);
fr += 2;
itAdvanced = true;
}
}
if (fr.matchSequence("alignment %w"))
{
std::string str = fr[1].getStr();
if (str=="LEFT_TOP") text.setAlignment(osgText::Text::LEFT_TOP);
else if (str=="LEFT_CENTER") text.setAlignment(osgText::Text::LEFT_CENTER);
else if (str=="LEFT_BOTTOM") text.setAlignment(osgText::Text::LEFT_BOTTOM);
else if (str=="CENTER_TOP") text.setAlignment(osgText::Text::CENTER_TOP);
else if (str=="CENTER_CENTER") text.setAlignment(osgText::Text::CENTER_CENTER);
else if (str=="CENTER_BOTTOM") text.setAlignment(osgText::Text::CENTER_BOTTOM);
else if (str=="RIGHT_TOP") text.setAlignment(osgText::Text::RIGHT_TOP);
else if (str=="RIGHT_CENTER") text.setAlignment(osgText::Text::RIGHT_CENTER);
else if (str=="RIGHT_BOTTOM") text.setAlignment(osgText::Text::RIGHT_BOTTOM);
else if (str=="BASE_LINE") text.setAlignment(osgText::Text::BASE_LINE);
fr += 2;
itAdvanced = true;
}
if (fr.matchSequence("axisAlignment %w"))
{
std::string str = fr[1].getStr();
if (str=="XY_PLANE") text.setAxisAlignment(osgText::Text::XY_PLANE);
else if (str=="XZ_PLANE") text.setAxisAlignment(osgText::Text::XZ_PLANE);
else if (str=="YZ_PLANE") text.setAxisAlignment(osgText::Text::YZ_PLANE);
else if (str=="SCREEN") text.setAxisAlignment(osgText::Text::SCREEN);
fr += 2;
itAdvanced = true;
}
if (fr.matchSequence("rotation"))
{
osg::Vec4 rotation;
if (fr[1].getFloat(rotation.x()) && fr[2].getFloat(rotation.y()) && fr[3].getFloat(rotation.z()) && fr[4].getFloat(rotation.w()))
{
text.setRotation(rotation);
fr += 4;
itAdvanced = true;
}
}
if (fr.matchSequence("layout %w"))
{
std::string str = fr[1].getStr();
if (str=="LEFT_TO_RIGHT") text.setLayout(osgText::Text::LEFT_TO_RIGHT);
else if (str=="RIGHT_TO_LEFT") text.setLayout(osgText::Text::RIGHT_TO_LEFT);
else if (str=="VERTICAL") text.setLayout(osgText::Text::VERTICAL);
fr += 2;
itAdvanced = true;
}
// position
if (fr[0].matchWord("position")) {
if (fr[0].matchWord("position"))
{
osg::Vec3 p;
if (fr[1].getFloat(p.x()) && fr[2].getFloat(p.y()) && fr[3].getFloat(p.z())) {
if (fr[1].getFloat(p.x()) && fr[2].getFloat(p.y()) && fr[3].getFloat(p.z()))
{
text.setPosition(p);
fr += 4;
itAdvanced = true;
@ -39,9 +148,11 @@ bool Text_readLocalData(osg::Object &obj, osgDB::Input &fr)
}
// color
if (fr[0].matchWord("color")) {
if (fr[0].matchWord("color"))
{
osg::Vec4 c;
if (fr[1].getFloat(c.x()) && fr[2].getFloat(c.y()) && fr[3].getFloat(c.z()) && fr[4].getFloat(c.w())) {
if (fr[1].getFloat(c.x()) && fr[2].getFloat(c.y()) && fr[3].getFloat(c.z()) && fr[4].getFloat(c.w()))
{
text.setColor(c);
fr += 4;
itAdvanced = true;
@ -49,7 +160,8 @@ bool Text_readLocalData(osg::Object &obj, osgDB::Input &fr)
}
// draw mode
if (fr[0].matchWord("drawMode")) {
if (fr[0].matchWord("drawMode"))
{
int i;
if (fr[1].getInt(i)) {
text.setDrawMode(i);
@ -58,16 +170,6 @@ bool Text_readLocalData(osg::Object &obj, osgDB::Input &fr)
}
}
// alignment
if (fr[0].matchWord("alignment")) {
int i;
if (fr[1].getInt(i)) {
text.setAlignment((osgText::Text::AlignmentType)i);
fr += 2;
itAdvanced = true;
}
}
// text
if (fr.matchSequence("text %s")) {
text.setText(std::string(fr[1].getStr()));
@ -75,6 +177,39 @@ bool Text_readLocalData(osg::Object &obj, osgDB::Input &fr)
itAdvanced = true;
}
if (fr.matchSequence("text %i {"))
{
// pre 0.9.3 releases..
int entry = fr[0].getNoNestedBrackets();
int capacity;
fr[1].getInt(capacity);
osgText::String str;
str.reserve(capacity);
fr += 3;
while (!fr.eof() && fr[0].getNoNestedBrackets()>entry)
{
unsigned int c;
if (fr[0].getUInt(c))
{
++fr;
str.push_back(c);
}
else
{
++fr;
}
}
text.setText(str);
itAdvanced = true;
++fr;
}
return itAdvanced;
}
@ -87,8 +222,69 @@ bool Text_writeLocalData(const osg::Object &obj, osgDB::Output &fw)
fw.indent() << "font " << text.getFont()->getFileName() << std::endl;
}
// font resolution
fw.indent() << "fontSize " << text.getFontWidth() << " " << text.getFontHeight() << std::endl;
// charater size.
fw.indent() << "characterSize " << text.getCharacterHeight() << " " << text.getCharacterAspectRatio() << std::endl;
// maximum dimension of text box.
if (text.getMaximumWidth()>0.0f)
{
fw.indent() << "maximumWidth " << text.getMaximumWidth() << std::endl;
}
if (text.getMaximumHeight()>0.0f)
{
fw.indent() << "maximumHeight " << text.getMaximumHeight() << std::endl;
}
// alignment
fw.indent() << "alignment ";
switch(text.getAlignment())
{
case osgText::Text::LEFT_TOP: fw << "LEFT_TOP" << std::endl; break;
case osgText::Text::LEFT_CENTER : fw << "LEFT_CENTER" << std::endl; break;
case osgText::Text::LEFT_BOTTOM : fw << "LEFT_BOTTOM" << std::endl; break;
case osgText::Text::CENTER_TOP: fw << "CENTER_TOP" << std::endl; break;
case osgText::Text::CENTER_CENTER: fw << "CENTER_CENTER" << std::endl; break;
case osgText::Text::CENTER_BOTTOM: fw << "CENTER_BOTTOM" << std::endl; break;
case osgText::Text::RIGHT_TOP: fw << "RIGHT_TOP" << std::endl; break;
case osgText::Text::RIGHT_CENTER: fw << "RIGHT_CENTER" << std::endl; break;
case osgText::Text::RIGHT_BOTTOM: fw << "RIGHT_BOTTOM" << std::endl; break;
case osgText::Text::BASE_LINE: fw << "BASE_LINE" << std::endl; break;
};
// axis alignment
fw.indent() << "axisAlignment ";
switch(text.getAxisAlignment())
{
case osgText::Text::XY_PLANE: fw << "XY_PLANE" << std::endl; break;
case osgText::Text::XZ_PLANE: fw << "XZ_PLANE" << std::endl; break;
case osgText::Text::YZ_PLANE: fw << "YZ_PLANE" << std::endl; break;
case osgText::Text::SCREEN: fw << "SCREEN" << std::endl; break;
};
if (!text.getRotation().zeroRotation())
{
fw.indent() << "rotation " << text.getRotation() << std::endl;
}
// layout
fw.indent() << "layout ";
switch(text.getLayout())
{
case osgText::Text::LEFT_TO_RIGHT: fw << "LEFT_TO_RIGHT" << std::endl; break;
case osgText::Text::RIGHT_TO_LEFT: fw << "RIGHT_TO_LEFT" << std::endl; break;
case osgText::Text::VERTICAL: fw << "VERTICAL" << std::endl; break;
};
// position
osg::Vec3 p = text.getPosition();
fw.indent() << "position " << p.x() << " " << p.y() << " " << p.z() << std::endl;
@ -100,8 +296,6 @@ bool Text_writeLocalData(const osg::Object &obj, osgDB::Output &fw)
// draw mode
fw.indent() << "drawMode " << text.getDrawMode() << std::endl;
// alignment
fw.indent() << "alignment " << text.getAlignment() << std::endl;
// text
const osgText::String& textstring = text.getText();
@ -120,10 +314,10 @@ bool Text_writeLocalData(const osg::Object &obj, osgDB::Output &fw)
}
else
{
// do it the hardway...
// do it the hardway...output each character as an int
fw.indent() << "text "<<textstring.size()<<std::endl;;
writeArray(fw,textstring.begin(),textstring.end());
}
return true;
}

4
src/osgText/Font.cpp
View File

@ -231,6 +231,10 @@ void Font::addGlyph(unsigned int width, unsigned int height, unsigned int charco
_stateSetList.push_back(stateset);
glyphTexture = new GlyphTexture;
// static int numberOfTexturesAllocated = 0;
// ++numberOfTexturesAllocated;
// std::cout << this<< " numberOfTexturesAllocated "<<numberOfTexturesAllocated<<std::endl;
// reserve enough space for the glyphs.
glyphTexture->setGlyphImageMargin(_margin);

2
src/osgText/Makefile
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@ -11,7 +11,7 @@ CXXFILES = \
DEF += -DOSGTEXT_LIBRARY
LIBS += -losgDB -losgUtil -losg $(GL_LIBS) $(OTHER_LIBS)
LIBS += -losgDB -losg $(GL_LIBS) $(OTHER_LIBS)
TARGET_BASENAME = osgText
LIB = $(LIB_PREFIX)$(TARGET_BASENAME).$(LIB_EXT)

53
src/osgText/Text.cpp
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@ -240,8 +240,8 @@ void Text::computeGlyphRepresentation()
if (charcode=='\n')
{
if (horizontal) startOfLine.y() -= _fontHeight;
else startOfLine.x() += _fontWidth;
if (horizontal) startOfLine.y() -= _characterHeight;
else startOfLine.x() += _characterHeight;
cursor = startOfLine;
previous_charcode = 0;
continue;
@ -300,7 +300,7 @@ void Text::computeGlyphRepresentation()
{
if (local.x()+width>_maximumWidth)
{
startOfLine.y() -= _fontHeight;
startOfLine.y() -= _characterHeight;
cursor = startOfLine;
previous_charcode = 0;
@ -317,7 +317,7 @@ void Text::computeGlyphRepresentation()
{
if (local.x()<-_maximumWidth)
{
startOfLine.y() -= _fontHeight;
startOfLine.y() -= _characterHeight;
cursor = startOfLine;
previous_charcode = 0;
@ -333,7 +333,7 @@ void Text::computeGlyphRepresentation()
{
if (local.y()<-_maximumHeight)
{
startOfLine.x() += _fontWidth;
startOfLine.x() += _characterHeight/_characterAspectRatio;
cursor = startOfLine;
previous_charcode = 0;
@ -470,8 +470,6 @@ void Text::drawImplementation(osg::State& state) const
if (_drawMode & TEXT)
{
bool first = false;
state.disableAllVertexArrays();
for(TextureGlyphQuadMap::const_iterator titr=_textureGlyphQuadMap.begin();
@ -479,11 +477,7 @@ void Text::drawImplementation(osg::State& state) const
++titr)
{
// need to set the texture here...
if (!first)
{
state.apply(titr->first.get());
}
state.apply(titr->first.get());
const GlyphQuads& glyphquad = titr->second;
@ -492,8 +486,6 @@ void Text::drawImplementation(osg::State& state) const
glDrawArrays(GL_QUADS,0,glyphquad._coords.size());
first = false;
}
}
@ -536,3 +528,36 @@ void Text::drawImplementation(osg::State& state) const
glPopMatrix();
}
void Text::accept(osg::Drawable::ConstAttributeFunctor& af) const
{
for(TextureGlyphQuadMap::const_iterator titr=_textureGlyphQuadMap.begin();
titr!=_textureGlyphQuadMap.end();
++titr)
{
const GlyphQuads& glyphquad = titr->second;
af.apply(osg::Drawable::VERTICES,glyphquad._coords.size(),&(glyphquad._coords.front()));
af.apply(osg::Drawable::TEXTURE_COORDS_0,glyphquad._texcoords.size(),&(glyphquad._texcoords.front()));
}
}
void Text::accept(osg::Drawable::PrimitiveFunctor& pf) const
{
for(TextureGlyphQuadMap::const_iterator titr=_textureGlyphQuadMap.begin();
titr!=_textureGlyphQuadMap.end();
++titr)
{
const GlyphQuads& glyphquad = titr->second;
pf.begin(GL_QUADS);
for(GlyphQuads::Coords::const_iterator itr = glyphquad._coords.begin();
itr!=glyphquad._coords.end();
++itr)
{
osg::Vec3 pos(itr->x(),itr->y(),0.0f);
pf.vertex(pos*_matrix);
}
pf.end();
}
}