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cb8025d9137104db86a363efcf8d6eb1f114ef81
OpenSceneGraph/src/osgText/Text.cpp
Robert Osfield a434abafd7 Fixes for IRIX build. 
Updates to the osg::Transform, adding preMult and postMult methods and
deprecating the old preRotate,preTranslate,preScale.

Updated the rest of the OSG so that it nolonger uses the deprecated
osg::Transform nodes.

Renamed osgUtil::SceneView::setGlobalState() to
osgUtil::SceneView::setGlobalStateSet() so that the name reflects its
functionality better.  Updated osgGLUT::Viewer etc to cope with new
name change.
2001-11-14 14:09:07 +00:00

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/* --------------------------------------------------------------------------
*
* openscenegraph textLib / FTGL
*
* --------------------------------------------------------------------------
*
* prog: max rheiner;mrn@paus.ch
* date: 4/25/2001 (m/d/y)
*
* ----------------------------------------------------------------------------
*
* --------------------------------------------------------------------------
*/
#include <osgText/Text>
#include <osgDB/FileUtils>
#include "FTFace.h"
#include "FTGLBitmapFont.h"
#include "FTGLPixmapFont.h"
#include "FTGLOutlineFont.h"
#include "FTGLPolygonFont.h"
#include "FTGLTextureFont.h"
using namespace osg;
using namespace osgText;
///////////////////////////////////////////////////////////////////////////////
// Text
Text::
Text()
{
setDefaults();
}
Text::
Text(Font* font)
{
setDefaults();
if(font && font->isOk())
{
_init=true;
_font=font;
if(dynamic_cast<PolygonFont*>(_font.get()))
_fontType=POLYGON;
else if(dynamic_cast<BitmapFont*>(_font.get()))
_fontType=BITMAP;
else if(dynamic_cast<PixmapFont*>(_font.get()))
_fontType=PIXMAP;
else if(dynamic_cast<TextureFont*>(_font.get()))
_fontType=TEXTURE;
else if(dynamic_cast<OutlineFont*>(_font.get()))
_fontType=OUTLINE;
}
}
Text::
~Text()
{
}
void Text::setFont(Font* font)
{
if (_font==font) return;
if(font && font->isOk())
{
_init=true;
_font=font;
if(dynamic_cast<PolygonFont*>(_font.get()))
_fontType=POLYGON;
else if(dynamic_cast<BitmapFont*>(_font.get()))
_fontType=BITMAP;
else if(dynamic_cast<PixmapFont*>(_font.get()))
_fontType=PIXMAP;
else if(dynamic_cast<TextureFont*>(_font.get()))
_fontType=TEXTURE;
else if(dynamic_cast<OutlineFont*>(_font.get()))
_fontType=OUTLINE;
_initAlignment = false;
dirtyBound();
}
}
void Text::
setDefaults()
{
_init=false;
_pos.set(0,0,0);
_alignmentPos.set(0,0,0);
_fontType=UNDEF;
_alignment=LEFT_BOTTOM;
_drawMode=DEFAULT;
_boundingBoxType=GLYPH;
_boundingBoxType=GEOMETRY;
_initAlignment=false;
_useDisplayList=false;
}
const bool Text::
computeBound() const
{
if(!_init)
{
_bbox_computed=false;
return true;
}
// culling
if(_font->isCreated())
{ // ready to get the siz
_bbox.init();
Vec3 min,max;
calcBounds(&min,&max);
_bbox.expandBy(min);
_bbox.expandBy(max);
_bbox_computed=true;
}
else
{ // have to wait for the init.
_bbox.init();
// to be sure that the obj isn't culled
// _bbox.expandBy(_pos);
_bbox.expandBy(_pos + Vec3(-100,-100,-100));
_bbox.expandBy(_pos + Vec3(100,100,100));
/*
_bbox.expandBy(Vec3(-FLT_MAX,-FLT_MAX,-FLT_MAX));
_bbox.expandBy(Vec3(FLT_MAX,FLT_MAX,FLT_MAX));
*/
_bbox_computed=true;
}
return true;
}
void Text::drawImmediateMode(State& state)
{
if(!_init)
return;
if(!_font->isCreated())
{
_font->create();
dirtyBound();
}
if(!_initAlignment)
initAlignment();
// draw boundingBox
if(_drawMode & BOUNDINGBOX)
drawBoundingBox();
// draw alignment
if(_drawMode & ALIGNEMENT)
drawAlignment();
// draw boundingBox
if(_drawMode & TEXT)
{
Vec3 drawPos(_pos+_alignmentPos);
glPushMatrix();
switch(_fontType)
{
case POLYGON:
glTranslatef(drawPos.x(),drawPos.y(),drawPos.z());
_font->output(_text.c_str());
break;
case OUTLINE:
glTranslatef(drawPos.x(),drawPos.y(),drawPos.z());
_font->output(_text.c_str());
break;
case BITMAP:
glRasterPos3f(drawPos.x(),drawPos.y(),drawPos.z());
_font->output(_text.c_str());
break;
case PIXMAP:
glRasterPos3f(drawPos.x(),drawPos.y(),drawPos.z());
_font->output(_text.c_str());
break;
case TEXTURE:
glTranslatef(drawPos.x(),drawPos.y(),drawPos.z());
_font->output(_text.c_str());
break;
};
glPopMatrix();
}
}
void Text::
drawBoundingBox(void)
{
if(!_init)
return;
glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT );
glDisable(GL_TEXTURE_2D);
glColor3f(0,1,0);
glBegin(GL_LINE_LOOP);
glVertex3f(_bbox.xMin(),_bbox.yMin(),_bbox.zMin());
glVertex3f(_bbox.xMax(),_bbox.yMin(),_bbox.zMin());
glVertex3f(_bbox.xMax(),_bbox.yMax(),_bbox.zMin());
glVertex3f(_bbox.xMin(),_bbox.yMax(),_bbox.zMin());
glEnd();
glPopAttrib();
}
void Text::
drawAlignment(void)
{
if(!_init)
return;
double size=_font->getPointSize()/4;
glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT );
glDisable(GL_TEXTURE_2D);
glColor3f(1,0,0);
glBegin(GL_LINES);
glVertex3f(_pos.x() - size,_pos.y(),_pos.z());
glVertex3f(_pos.x() + size,_pos.y(),_pos.z());
glVertex3f(_pos.x(),_pos.y() - size,_pos.z());
glVertex3f(_pos.x(),_pos.y() + size,_pos.z());
glEnd();
glPopAttrib();
}
void Text::
setPosition(const Vec3& pos)
{
_pos=pos;
}
void Text::
setPosition(const Vec2& pos)
{
setPosition(Vec3(pos.x(),pos.y(),0));
}
void Text::
calcBounds(Vec3* min,Vec3* max) const
{
if(!_init)
return;
float h=_font->getHeight();
float w=_font->getWidth(_text.c_str());
float descender=_font->getDescender();
min->set(0,descender,0);
max->set(w,h + descender ,0);
}
bool Text::
initAlignment(void)
{
if(!_init)
return false;
// culling
if(_font->isCreated())
{ // ready to get the siz
_bbox.init();
Vec3 min,max;
initAlignment(&min,&max);
_bbox.expandBy(min);
_bbox.expandBy(max);
_bbox_computed=true;
_initAlignment=true;
}
else
{ // have to wait for the init.
_bbox.init();
// to be sure that the obj isn't culled
_bbox.expandBy(Vec3(-FLT_MAX,-FLT_MAX,-FLT_MAX));
_bbox.expandBy(Vec3(FLT_MAX,FLT_MAX,FLT_MAX));
_bbox_computed=true;
}
return true;
}
void Text::
initAlignment(Vec3* min,Vec3* max)
{
if(!_init)
return;
float h=_font->getHeight();
float w=_font->getWidth(_text.c_str());
float descender=_font->getDescender();
min->set(0,descender,0);
max->set(w,h + descender ,0);
switch(_boundingBoxType)
{
case GLYPH:
h+=descender;
switch(_alignment)
{
case LEFT_TOP:
_alignmentPos.set(0.0,h,0.0);
break;
case LEFT_CENTER:
_alignmentPos.set(0.0,h/2.0,0.0);
break;
case LEFT_BOTTOM:
_alignmentPos.set(0.0,0.0,0.0);
break;
case CENTER_TOP:
_alignmentPos.set(w/2.0,h,0.0);
break;
case CENTER_CENTER:
_alignmentPos.set(w/2.0,h/2.0,0.0);
break;
case CENTER_BOTTOM:
_alignmentPos.set(w/2.0,0.0,0.0);
break;
case RIGHT_TOP:
_alignmentPos.set(w,h,0.0);
break;
case RIGHT_CENTER:
_alignmentPos.set(w,h/2.0,0.0);
break;
case RIGHT_BOTTOM:
_alignmentPos.set(w,0.0,0.0);
break;
};
_alignmentPos=-_alignmentPos;
*min+=_pos+_alignmentPos;
*max+=_pos+_alignmentPos;
break;
case GEOMETRY:
switch(_alignment)
{
case LEFT_TOP:
_alignmentPos.set(0.0,h + descender,0.0);
break;
case LEFT_CENTER:
_alignmentPos.set(0.0,(max->y()-min->y()) /2.0 + descender,0.0);
break;
case LEFT_BOTTOM:
_alignmentPos.set(0.0,descender,0.0);
break;
case CENTER_TOP:
_alignmentPos.set(w/2.0,h + descender,0.0);
break;
case CENTER_CENTER:
_alignmentPos.set(w/2.0,(max->y()-min->y()) /2.0 + descender,0.0);
break;
case CENTER_BOTTOM:
_alignmentPos.set(w/2.0,descender,0.0);
break;
case RIGHT_TOP:
_alignmentPos.set(w,h + descender,0.0);
break;
case RIGHT_CENTER:
_alignmentPos.set(w,(max->y()-min->y()) /2.0 + descender,0.0);
break;
case RIGHT_BOTTOM:
_alignmentPos.set(w,descender,0.0);
break;
};
_alignmentPos=-_alignmentPos;
*min+=_pos+_alignmentPos;
*max+=_pos+_alignmentPos;
break;
};
switch(_fontType)
{
case BITMAP:
break;
case PIXMAP:
break;
};
}
void Text::
setAlignment(int alignment)
{
_alignment=alignment;
if(!_init || !_font->isCreated())
return;
initAlignment();
}
void Text::
setBoundingBox(int mode)
{
_boundingBoxType=mode;
if(!_init || !_font->isCreated())
return;
initAlignment();
}
// Text
///////////////////////////////////////////////////////////////////////////////
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