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Unified more of the 2D and 3D text setup, fixed bugs in Text3D setup

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which address the problems of black 3D text and the kerning causing problems with font positioning.
This commit is contained in:
Robert Osfield
2011-01-11 11:39:31 +00:00
parent d59ac54b31
commit 74cf034404
9 changed files with 174 additions and 247 deletions
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182
src/osgText/Text3D.cpp
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@@ -124,7 +124,7 @@ String::iterator Text3D::computeLastCharacterOnLine(osg::Vec2& cursor, String::i
float maximumWidth = _maximumWidth;
float hr = 1.0f;
float wr = 1.0f/getCharacterAspectRatio();
float wr = 1.0f;
for(bool outOfSpace=false;lastChar!=last;++lastChar)
{
@@ -140,76 +140,53 @@ String::iterator Text3D::computeLastCharacterOnLine(osg::Vec2& cursor, String::i
{
const osg::BoundingBox & bb = glyph->getBoundingBox();
if (_layout==RIGHT_TO_LEFT)
{
cursor.x() -= glyph->getHorizontalAdvance() * wr;
}
// adjust cursor position w.r.t any kerning.
if (previous_charcode)
if (kerning && previous_charcode)
{
if (_layout == RIGHT_TO_LEFT)
switch(_layout)
{
cursor.x() -= glyph->getHorizontalAdvance() * wr;
}
if (kerning)
{
switch (_layout)
{
case LEFT_TO_RIGHT:
{
osg::Vec2 delta(_font->getKerning(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));
cursor.x() -= delta.x() * wr;
cursor.y() -= delta.y() * hr;
break;
}
case VERTICAL:
break; // no kerning when vertical.
}
case LEFT_TO_RIGHT:
{
osg::Vec2 delta(_font->getKerning(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));
cursor.x() -= delta.x() * wr;
cursor.y() -= delta.y() * hr;
break;
}
case VERTICAL:
break; // no kerning when vertical.
}
}
else
{
switch (_layout)
{
case LEFT_TO_RIGHT:
{
cursor.x() -= glyph->getHorizontalBearing().x() * wr;
break;
}
case RIGHT_TO_LEFT:
{
cursor.x() -= bb.xMax() * wr;
break;
}
case VERTICAL:
break;
}
}
osg::Vec2 local = cursor;
switch(_layout)
{
case LEFT_TO_RIGHT:
{
if (maximumWidth>0.0f && cursor.x()+bb.xMax()>maximumWidth) outOfSpace=true;
if(maximumHeight>0.0f && cursor.y()<-maximumHeight) outOfSpace=true;
if (maximumWidth>0.0f && local.x()+bb.xMax()>maximumWidth) outOfSpace=true;
if(maximumHeight>0.0f && local.y()<-maximumHeight) outOfSpace=true;
break;
}
case RIGHT_TO_LEFT:
{
if (maximumWidth>0.0f && cursor.x()+bb.xMin()<-maximumWidth) outOfSpace=true;
if(maximumHeight>0.0f && cursor.y()<-maximumHeight) outOfSpace=true;
if (maximumWidth>0.0f && local.x()+bb.xMin()<-maximumWidth) outOfSpace=true;
if(maximumHeight>0.0f && local.y()<-maximumHeight) outOfSpace=true;
break;
}
case VERTICAL:
if (maximumHeight>0.0f && cursor.y()<-maximumHeight) outOfSpace=true;
if (maximumHeight>0.0f && local.y()<-maximumHeight) outOfSpace=true;
break;
}
@@ -287,7 +264,7 @@ void Text3D::computeGlyphRepresentation()
float hr = 1.0f;
float wr = 1.0f/getCharacterAspectRatio();
float wr = 1.0f;
osg::Vec2 startOfLine_coords(0.0f,0.0f);
osg::Vec2 cursor(startOfLine_coords);
@@ -300,8 +277,6 @@ void Text3D::computeGlyphRepresentation()
unsigned int lineNumber = 0;
for(String::iterator itr=_text.begin(); itr!=_text.end(); )
{
_textRenderInfo.resize(lineNumber + 1);
@@ -329,70 +304,37 @@ void Text3D::computeGlyphRepresentation()
{
const osg::BoundingBox & bb = glyph->getBoundingBox();
// adjust cursor position w.r.t any kerning.
if (previous_charcode)
if (_layout==RIGHT_TO_LEFT)
{
if (_layout == RIGHT_TO_LEFT)
{
cursor.x() -= glyph->getHorizontalAdvance() * wr;
}
if (kerning)
{
switch (_layout)
{
case LEFT_TO_RIGHT:
{
osg::Vec2 delta(_font->getKerning(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));
cursor.x() -= delta.x() * wr;
cursor.y() -= delta.y() * hr;
break;
}
case VERTICAL:
break; // no kerning when vertical.
}
}
cursor.x() -= glyph->getHorizontalAdvance() * wr;
}
else
{
switch (_layout)
{
case LEFT_TO_RIGHT:
{
cursor.x() -= glyph->getHorizontalBearing().x() * wr;
break;
}
case RIGHT_TO_LEFT:
{
cursor.x() -= bb.xMax() * wr;
break;
}
case VERTICAL:
{
// cursor.y() += glyph->getVerticalBearing().y();
break;
}
}
// adjust cursor position w.r.t any kerning.
if (kerning && previous_charcode)
{
switch(_layout)
{
case LEFT_TO_RIGHT:
{
osg::Vec2 delta(_font->getKerning(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));
cursor.x() -= delta.x() * wr;
cursor.y() -= delta.y() * hr;
break;
}
case VERTICAL:
break; // no kerning when vertical.
}
}
local = cursor;
if (_layout==VERTICAL)
{
local.x() += -glyph->getVerticalBearing().x() * wr;
local.y() += -glyph->getVerticalBearing().y() * hr;
}
// move the cursor onto the next character.
// also expand bounding box
switch (_layout)
@@ -400,12 +342,12 @@ void Text3D::computeGlyphRepresentation()
case LEFT_TO_RIGHT:
_textBB.expandBy(osg::Vec3(cursor.x() + bb.xMin()*wr, cursor.y() + bb.yMin()*hr, 0.0f)); //lower left corner
_textBB.expandBy(osg::Vec3(cursor.x() + bb.xMax()*wr, cursor.y() + bb.yMax()*hr, 0.0f)); //upper right corner
cursor.x() += glyph->getHorizontalAdvance();
cursor.x() += glyph->getHorizontalAdvance() * wr;
break;
case VERTICAL:
_textBB.expandBy(osg::Vec3(cursor.x(), cursor.y(), 0.0f)); //upper left corner
_textBB.expandBy(osg::Vec3(cursor.x() + glyph->getWidth()*wr, cursor.y() - glyph->getHeight()*hr, 0.0f)); //lower right corner
cursor.y() -= glyph->getVerticalAdvance();
cursor.y() -= glyph->getVerticalAdvance() * hr;
break;
case RIGHT_TO_LEFT:
_textBB.expandBy(osg::Vec3(cursor.x()+bb.xMax()*wr, cursor.y() + bb.yMax()*hr, 0.0f)); //upper right corner
@@ -534,9 +476,6 @@ void Text3D::drawImplementation(osg::RenderInfo& renderInfo) const
osg::State & state = *renderInfo.getState();
unsigned int contextID = state.getContextID();
state.disableColorPointer();
state.Color(_color.r(),_color.g(),_color.b(),_color.a());
// ** save the previous modelview matrix
osg::Matrix previous(state.getModelViewMatrix());
@@ -555,6 +494,8 @@ void Text3D::drawImplementation(osg::RenderInfo& renderInfo) const
{
if (_textBB.valid())
{
gl.Color4fv(_color.ptr());
osg::Vec3 c000(osg::Vec3(_textBB.xMin(),_textBB.yMin(),_textBB.zMax()));
osg::Vec3 c100(osg::Vec3(_textBB.xMax(),_textBB.yMin(),_textBB.zMax()));
osg::Vec3 c110(osg::Vec3(_textBB.xMax(),_textBB.yMax(),_textBB.zMax()));
@@ -604,6 +545,8 @@ void Text3D::drawImplementation(osg::RenderInfo& renderInfo) const
osg::Vec3 vt(osg::Vec3(_offset.x(),_offset.y()-cursorsize,_offset.z()));
osg::Vec3 vb(osg::Vec3(_offset.x(),_offset.y()+cursorsize,_offset.z()));
gl.Color4fv(_color.ptr());
gl.Begin(GL_LINES);
gl.Vertex3fv(hl.ptr());
gl.Vertex3fv(hr.ptr());
@@ -615,6 +558,9 @@ void Text3D::drawImplementation(osg::RenderInfo& renderInfo) const
if (_drawMode & TEXT)
{
state.disableColorPointer();
state.Color(_color.r(),_color.g(),_color.b(),_color.a());
renderInfo.getState()->disableAllVertexArrays();
#if !defined(OSG_GLES1_AVAILABLE) && !defined(OSG_GLES2_AVAILABLE) && !defined(OSG_GL3_AVAILABLE)