FGFS-4.1/OpenSceneGraph
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Addd support for maximum screen text size into osgText when auto scale to

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Added osgautotransform demo.
This commit is contained in:
Robert Osfield
2003-05-01 21:06:18 +00:00
parent d2d9b97953
commit 895a722842
11 changed files with 836 additions and 9 deletions
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73
src/osgText/Text.cpp
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@@ -15,6 +15,7 @@
#include <osg/GL>
#include <osg/Math>
#include <osgUtil/CullVisitor>
#include <osgDB/ReadFile>
#include <osgText/Text>
#include "DefaultFont.h"
@@ -68,8 +69,14 @@ struct TextCullCallback : public osg::Drawable::CullCallback
if (_text->getAutoScaleToScreen())
{
float size = 1.0f/cs->pixelSize(_text->getPosition(),1.0f);
_text->setScale(size);
float numPixels = cs->pixelSize(_text->getPosition(),_text->getCharacterHeight());
if (numPixels>_text->getFontHeight())
{
_text->setScale(_text->getFontHeight()/numPixels);
}
//float size = 1.0f/cs->pixelSize(_text->getPosition(),1.0f);
//_text->setScale(size);
}
if (_text->getAutoRotateToScreen())
@@ -295,6 +302,25 @@ void Text::setColor(const osg::Vec4& color)
_color = color;
}
void Text::setDrawMode(unsigned int mode)
{
if (_drawMode&3 != mode&3)
{
_drawMode=mode;
if (_drawMode&TEXT_PIXMAP)
{
setAutoScaleToScreen(true);
setAutoRotateToScreen(true);
}
computeGlyphRepresentation();
}
else
{
_drawMode=mode;
}
}
bool Text::computeBound() const
{
_bbox.init();
@@ -436,7 +462,7 @@ void Text::computeGlyphRepresentation()
local.x() += bearing.x() * wr;
local.y() += bearing.y() * hr;
}
}
; }
break;
}
case VERTICAL:
@@ -458,6 +484,8 @@ void Text::computeGlyphRepresentation()
GlyphQuads& glyphquad = _textureGlyphQuadMap[glyph->getTexture()->getStateSet()];
glyphquad._glyphs.push_back(glyph);
// set up the coords of the quad
glyphquad._coords.push_back(local+osg::Vec2(0.0f,height));
glyphquad._coords.push_back(local+osg::Vec2(0.0f,0.0f));
@@ -575,6 +603,13 @@ void Text::computePositions()
dirtyBound();
}
static unsigned char local_data[] = { 255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255 };
static osg::Image* loaded_image = osgDB::readImageFile("lz.rgb");
void Text::drawImplementation(osg::State& state) const
{
@@ -583,7 +618,7 @@ void Text::drawImplementation(osg::State& state) const
glNormal3fv(_normal.ptr());
glColor4fv(_color.ptr());
if (_drawMode & TEXT)
if (_drawMode & TEXT && !(_drawMode & TEXT_PIXMAP))
{
state.disableAllVertexArrays();
@@ -605,6 +640,36 @@ void Text::drawImplementation(osg::State& state) const
}
}
if (_drawMode & TEXT_PIXMAP)
{
state.applyTextureMode(0,GL_TEXTURE_2D,osg::StateAttribute::OFF);
for(TextureGlyphQuadMap::const_iterator titr=_textureGlyphQuadMap.begin();
titr!=_textureGlyphQuadMap.end();
++titr)
{
const GlyphQuads& glyphquad = titr->second;
int ci=1;
for(GlyphQuads::Glyphs::const_iterator gitr=glyphquad._glyphs.begin();
gitr!=glyphquad._glyphs.end();
++gitr, ci+=4)
{
Font::Glyph* glyph = *gitr;
glRasterPos3fv(glyphquad._transformedCoords[ci].ptr());
glyph->draw(state);
}
}
}
if (_drawMode & BOUNDINGBOX)
{