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From David Callu, added support of 3D text to osgText and associated plugins.

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This commit is contained in:
Robert Osfield
2007-12-10 15:15:56 +00:00
parent 9b56dbe83a
commit f69a48e552
27 changed files with 3427 additions and 798 deletions
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243
src/osgText/Text.cpp
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@@ -32,22 +32,7 @@ using namespace osgText;
//#define TREES_CODE_FOR_MAKING_SPACES_EDITABLE
Text::Text():
_fontWidth(32),
_fontHeight(32),
_characterHeight(32),
_characterAspectRatio(1.0f),
_characterSizeMode(OBJECT_COORDS),
_maximumWidth(0.0f),
_maximumHeight(0.0f),
_lineSpacing(0.0f),
_alignment(BASE_LINE),
_axisAlignment(XY_PLANE),
_autoRotateToScreen(false),
_layout(LEFT_TO_RIGHT),
_color(1.0f,1.0f,1.0f,1.0f),
_drawMode(TEXT),
_kerningType(KERNING_DEFAULT),
_lineCount(0),
_backdropType(NONE),
_backdropImplementation(DEPTH_RANGE),
_backdropHorizontalOffset(0.07f),
@@ -58,34 +43,12 @@ Text::Text():
_colorGradientBottomLeft(0.0f, 1.0f, 0.0f, 1.0f),
_colorGradientBottomRight(0.0f, 0.0f, 1.0f, 1.0f),
_colorGradientTopRight(1.0f, 1.0f, 1.0f, 1.0f)
{
setStateSet(DefaultFont::instance()->getStateSet());
setUseDisplayList(false);
setSupportsDisplayList(false);
}
{}
Text::Text(const Text& text,const osg::CopyOp& copyop):
osg::Drawable(text,copyop),
osgText::TextBase(text,copyop),
_font(text._font),
_fontWidth(text._fontWidth),
_fontHeight(text._fontHeight),
_characterHeight(text._characterHeight),
_characterAspectRatio(text._characterAspectRatio),
_characterSizeMode(text._characterSizeMode),
_maximumWidth(text._maximumWidth),
_maximumHeight(text._maximumHeight),
_lineSpacing(text._lineSpacing),
_text(text._text),
_position(text._position),
_alignment(text._alignment),
_axisAlignment(text._axisAlignment),
_rotation(text._rotation),
_autoRotateToScreen(text._autoRotateToScreen),
_layout(text._layout),
_color(text._color),
_drawMode(text._drawMode),
_kerningType(text._kerningType),
_lineCount(text._lineCount),
_backdropType(text._backdropType),
_backdropImplementation(text._backdropImplementation),
_backdropHorizontalOffset(text._backdropHorizontalOffset),
@@ -126,182 +89,12 @@ void Text::setFont(const std::string& fontfile)
setFont(readFontFile(fontfile));
}
void Text::setFontResolution(unsigned int width, unsigned int height)
{
_fontWidth = width;
_fontHeight = height;
computeGlyphRepresentation();
}
void Text::setCharacterSize(float height,float aspectRatio)
{
_characterHeight = height;
_characterAspectRatio = aspectRatio;
computeGlyphRepresentation();
}
void Text::setMaximumWidth(float maximumWidth)
{
_maximumWidth = maximumWidth;
computeGlyphRepresentation();
}
void Text::setMaximumHeight(float maximumHeight)
{
_maximumHeight = maximumHeight;
computeGlyphRepresentation();
}
void Text::setLineSpacing(float lineSpacing)
{
_lineSpacing = lineSpacing;
computeGlyphRepresentation();
}
void Text::setText(const String& text)
{
if (_text==text) return;
_text = text;
computeGlyphRepresentation();
}
void Text::setText(const std::string& text)
{
setText(String(text));
}
void Text::setText(const std::string& text,String::Encoding encoding)
{
setText(String(text,encoding));
}
void Text::setText(const wchar_t* text)
{
setText(String(text));
}
void Text::setPosition(const osg::Vec3& pos)
{
if (_position==pos) return;
_position = pos;
computePositions();
}
void Text::setAlignment(AlignmentType alignment)
{
if (_alignment==alignment) return;
_alignment = alignment;
computePositions();
}
void Text::setAxisAlignment(AxisAlignment axis)
{
_axisAlignment = axis;
switch(axis)
{
case XZ_PLANE:
setAutoRotateToScreen(false);
setRotation(osg::Quat(osg::inDegrees(90.0f),osg::Vec3(1.0f,0.0f,0.0f)));
break;
case REVERSED_XZ_PLANE:
setAutoRotateToScreen(false);
setRotation(osg::Quat(osg::inDegrees(180.0f),osg::Vec3(0.0f,1.0f,0.0f))*
osg::Quat(osg::inDegrees(90.0f),osg::Vec3(1.0f,0.0f,0.0f)));
break;
case YZ_PLANE:
setAutoRotateToScreen(false);
setRotation(osg::Quat(osg::inDegrees(90.0f),osg::Vec3(1.0f,0.0f,0.0f))*
osg::Quat(osg::inDegrees(90.0f),osg::Vec3(0.0f,0.0f,1.0f)));
break;
case REVERSED_YZ_PLANE:
setAutoRotateToScreen(false);
setRotation(osg::Quat(osg::inDegrees(180.0f),osg::Vec3(0.0f,1.0f,0.0f))*
osg::Quat(osg::inDegrees(90.0f),osg::Vec3(1.0f,0.0f,0.0f))*
osg::Quat(osg::inDegrees(90.0f),osg::Vec3(0.0f,0.0f,1.0f)));
break;
case XY_PLANE:
setAutoRotateToScreen(false);
setRotation(osg::Quat()); // nop - already on XY plane.
break;
case REVERSED_XY_PLANE:
setAutoRotateToScreen(false);
setRotation(osg::Quat(osg::inDegrees(180.0f),osg::Vec3(0.0f,1.0f,0.0f)));
break;
case SCREEN:
setAutoRotateToScreen(true);
setRotation(osg::Quat()); // nop - already on XY plane.
break;
}
}
void Text::setRotation(const osg::Quat& quat)
{
_rotation = quat;
computePositions();
}
void Text::setAutoRotateToScreen(bool autoRotateToScreen)
{
if (_autoRotateToScreen==autoRotateToScreen) return;
_autoRotateToScreen = autoRotateToScreen;
}
void Text::setLayout(Layout layout)
{
if (_layout==layout) return;
_layout = layout;
computeGlyphRepresentation();
}
void Text::setColor(const osg::Vec4& color)
{
_color = color;
}
void Text::setDrawMode(unsigned int mode)
{
if (_drawMode==mode) return;
_drawMode=mode;
}
osg::BoundingBox Text::computeBound() const
{
osg::BoundingBox bbox;
if (_textBB.valid())
{
for(unsigned int i=0;i<_autoTransformCache.size();++i)
{
if (_autoTransformCache[i]._traversalNumber<0 && (_characterSizeMode!=OBJECT_COORDS || _autoRotateToScreen))
{
// _autoTransformCache is not valid so don't take it into accoumt when compute bounding volume.
}
else
{
osg::Matrix& matrix = _autoTransformCache[i]._matrix;
bbox.expandBy(osg::Vec3(_textBB.xMin(),_textBB.yMin(),_textBB.zMin())*matrix);
bbox.expandBy(osg::Vec3(_textBB.xMax(),_textBB.yMin(),_textBB.zMin())*matrix);
bbox.expandBy(osg::Vec3(_textBB.xMax(),_textBB.yMax(),_textBB.zMin())*matrix);
bbox.expandBy(osg::Vec3(_textBB.xMin(),_textBB.yMax(),_textBB.zMin())*matrix);
}
}
}
return bbox;
}
Font* Text::getActiveFont()
{
@@ -466,11 +259,11 @@ void Text::computeGlyphRepresentation()
if (_text.empty())
{
_textBB.set(0,0,0,0,0,0);//no size text
computePositions(); //to reset the origin
TextBase::computePositions(); //to reset the origin
return;
}
OpenThreads::ScopedLock<Font::FontMutex> lock(*(Font::getSerializeFontCallsMutex()));
OpenThreads::ScopedLock<Font::FontMutex> lock(*(activefont->getSerializeFontCallsMutex()));
// initialize bounding box, it will be expanded during glyph position calculation
_textBB.init();
@@ -746,7 +539,7 @@ void Text::computeGlyphRepresentation()
}
computePositions();
TextBase::computePositions();
computeBackdropBoundingBox();
computeColorGradients();
}
@@ -803,22 +596,6 @@ bool Text::computeAverageGlyphWidthAndHeight(float& avg_width, float& avg_height
return is_valid_size;
}
void Text::computePositions()
{
unsigned int size = osg::maximum(osg::DisplaySettings::instance()->getMaxNumberOfGraphicsContexts(),_autoTransformCache.size());
// FIXME: OPTIMIZE: This would be one of the ideal locations to
// call computeAverageGlyphWidthAndHeight(). It is out of the contextID loop
// so the value would be computed fewer times. But the code will need changes
// to get the value down to the locations it is needed. (Either pass through parameters
// or member variables, but we would need a system to know if the values are stale.)
for(unsigned int i=0;i<size;++i)
{
computePositions(i);
}
}
void Text::computePositions(unsigned int contextID) const
{
@@ -1670,16 +1447,14 @@ void Text::accept(osg::PrimitiveFunctor& pf) const
void Text::setThreadSafeRefUnref(bool threadSafe)
{
Drawable::setThreadSafeRefUnref(threadSafe);
TextBase::setThreadSafeRefUnref(threadSafe);
getActiveFont()->setThreadSafeRefUnref(threadSafe);
}
void Text::resizeGLObjectBuffers(unsigned int maxSize)
{
Drawable::resizeGLObjectBuffers(maxSize);
_autoTransformCache.resize(maxSize);
TextBase::resizeGLObjectBuffers(maxSize);
getActiveFont()->resizeGLObjectBuffers(maxSize);
}
@@ -1687,7 +1462,7 @@ void Text::resizeGLObjectBuffers(unsigned int maxSize)
void Text::releaseGLObjects(osg::State* state) const
{
Drawable::releaseGLObjects(state);
TextBase::releaseGLObjects(state);
getActiveFont()->releaseGLObjects(state);
}
@@ -1983,7 +1758,6 @@ void Text::renderOnlyForegroundText(osg::State& state, const osg::Vec4& colorMul
}
void Text::renderWithPolygonOffset(osg::State& state, const osg::Vec4& colorMultiplier) const
{
unsigned int contextID = state.getContextID();
@@ -2044,7 +1818,6 @@ void Text::renderWithPolygonOffset(osg::State& state, const osg::Vec4& colorMult
glPopAttrib();
}
void Text::renderWithNoDepthBuffer(osg::State& state, const osg::Vec4& colorMultiplier) const
{