FGFS-4.1/OpenSceneGraph
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Added support for automatic scaling of text to screen coords. Optimized

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the text implementation to provide better speed, especially by using the
alignement to screen option.

Deprecated the Text::setFontSize(,) method, which is now being replaced
by setFontResolution(,)

Fixed typos in Texture*.cpp.

Removed old deprecated methods from osg headers.
This commit is contained in:
Robert Osfield 2003-04-30 11:40:17 +00:00
parent 821313d102
commit 0ab467483f
15 changed files with 366 additions and 225 deletions
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2
examples/osghangglide/GliderManipulator.cpp
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@ -210,7 +210,7 @@ bool GliderManipulator::calcMovement()
osg::Vec3 sv = _camera->getSideVector();
osg::Vec3 lv = _camera->getLookVector();
float pitch = inDegrees(dy*70.0f*dt);
float pitch = inDegrees(-dy*70.0f*dt);
float roll = inDegrees(dx*60.0f*dt);
osg::Matrix mat;

11
examples/osghud/osghud.cpp
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@ -44,8 +44,8 @@ osg::Node* createHUD()
geode->addDrawable( text );
text->setFont(timesFont);
text->setPosition(position);
text->setText("Head Up Displays are simple :-)");
text->setPosition(position);
position += delta;
}
@ -56,8 +56,9 @@ osg::Node* createHUD()
geode->addDrawable( text );
text->setFont(timesFont);
text->setAutoScaleToScreen(true);
text->setPosition(position);
text->setText("All you need to do is create your text in a subgraph.");
text->setPosition(position);
position += delta;
}
@ -68,8 +69,8 @@ osg::Node* createHUD()
geode->addDrawable( text );
text->setFont(timesFont);
text->setPosition(position);
text->setText("Disable depth test in this subgraph to ensure its always ontop.");
text->setPosition(position);
position += delta;
}
@ -79,8 +80,8 @@ osg::Node* createHUD()
geode->addDrawable( text );
text->setFont(timesFont);
text->setPosition(position);
text->setText("Then place an osg::Projection node above the subgraph\nto create an orthographic projection.");
text->setPosition(position);
position += delta;
}
@ -90,8 +91,8 @@ osg::Node* createHUD()
geode->addDrawable( text );
text->setFont(timesFont);
text->setText("And add an osg::ModelViewMatrix set to ABSOLUTE to ensure\nit remains independent from any external model view matrices.");
text->setPosition(position);
text->setText("And add an osg::ModelViewMatrix set to ABSOLUTE to ensure\nit remains independent from any external model view matrices.");
position += delta;
}

4
examples/osglogo/osglogo.cpp
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@ -130,7 +130,7 @@ osg:: Node* createTextBelow(const osg::BoundingBox& bb)
osgText::Text* text = new osgText::Text;
text->setFont(font);
text->setFontSize(64,64);
text->setFontResolution(64,64);
text->setAlignment(osgText::Text::CENTER_CENTER);
text->setAxisAlignment(osgText::Text::XZ_PLANE);
text->setPosition(bb.center()-osg::Vec3(0.0f,0.0f,(bb.zMax()-bb.zMin())));
@ -157,7 +157,7 @@ osg:: Node* createTextLeft(const osg::BoundingBox& bb)
osgText::Text* text = new osgText::Text;
text->setFont(font);
text->setFontSize(110,120);
text->setFontResolution(110,120);
text->setAlignment(osgText::Text::RIGHT_CENTER);
text->setAxisAlignment(osgText::Text::XZ_PLANE);
text->setCharacterSize((bb.zMax()-bb.zMin())*1.0f);

18
examples/osgtext/osgtext.cpp
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@ -114,9 +114,9 @@ osg::Group* createHUDText()
text->setPosition(cursor);
// use text that uses 10 by 10 texels as a target resolution for fonts.
text->setFontSize(10,10); // blocky but small texture memory usage
text->setFontResolution(10,10); // blocky but small texture memory usage
text->setText("text->setFontSize(10,10); // blocky but small texture memory usage");
text->setText("text->setFontResolution(10,10); // blocky but small texture memory usage");
geode->addDrawable(text);
}
@ -129,9 +129,9 @@ osg::Group* createHUDText()
text->setPosition(cursor);
// use text that uses 10 by 10 texels as a target resolution for fonts.
text->setFontSize(20,20); // smoother but higher texture memory usage (but still quite low).
text->setFontResolution(20,20); // smoother but higher texture memory usage (but still quite low).
text->setText("text->setFontSize(20,20); // smoother but higher texture memory usage (but still quite low).");
text->setText("text->setFontResolution(20,20); // smoother but higher texture memory usage (but still quite low).");
geode->addDrawable(text);
}
@ -144,9 +144,9 @@ osg::Group* createHUDText()
text->setPosition(cursor);
// use text that uses 10 by 10 texels as a target resolution for fonts.
text->setFontSize(40,40); // even smoother but again higher texture memory usage.
text->setFontResolution(40,40); // even smoother but again higher texture memory usage.
text->setText("text->setFontSize(40,40); // even smoother but again higher texture memory usage.");
text->setText("text->setFontResolution(40,40); // even smoother but again higher texture memory usage.");
geode->addDrawable(text);
}
@ -164,7 +164,7 @@ osg::Group* createHUDText()
osgText::Text* text = new osgText::Text;
text->setFont(font);
text->setColor(characterSizeColor);
text->setFontSize(20,20);
text->setFontResolution(20,20);
text->setPosition(cursor);
// use text that 20 units high.
@ -179,7 +179,7 @@ osg::Group* createHUDText()
osgText::Text* text = new osgText::Text;
text->setFont(font);
text->setColor(characterSizeColor);
text->setFontSize(30,30);
text->setFontResolution(30,30);
text->setPosition(cursor);
// use text that 20 units high.
@ -194,7 +194,7 @@ osg::Group* createHUDText()
osgText::Text* text = new osgText::Text;
text->setFont(font);
text->setColor(characterSizeColor);
text->setFontSize(40,40);
text->setFontResolution(40,40);
text->setPosition(cursor);
// use text that uses 10 by 10 texels as a target resolution for fonts.

18
include/osg/Drawable
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@ -192,24 +192,6 @@ class SG_EXPORT Drawable : public Object
/** Get the non const UpdateCallback.*/
UpdateCallback* getUpdateCallback() { return _updateCallback.get(); }
#ifdef USE_DEPRECATED_API
struct AppCallback : public UpdateCallback
{
/** do customized app code.*/
virtual void app(osg::NodeVisitor *visitor, osg::Drawable* drawable) = 0;
virtual void update(osg::NodeVisitor *visitor, osg::Drawable* drawable) { app(visitor,drawable); }
};
/** deprecated.*/
void setAppCallback(AppCallback* ac) { setUpdateCallback(ac); }
/** deprecated.*/
AppCallback* getAppCallback() { return getUpdateCallback(); }
/** deprecated.*/
const AppCallback* getAppCallback() const { return getUpdateCallback(); }
#endif
struct CullCallback : public virtual osg::Referenced
{

11
include/osg/Export
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@ -17,7 +17,7 @@
// define used to include in API which is being fazed out
// if you can compile your apps with this turned off you are
// well placed for compatablity with future versions.
//#define USE_DEPRECATED_API
#define USE_DEPRECATED_API
#if defined(_MSC_VER)
#pragma warning( disable : 4244 )
@ -56,13 +56,4 @@
#endif
#endif
#ifdef USE_DEPRECATED_API
#define osgNew new
#define osgDelete delete
#define osgFree free
#define osgMalloc malloc
#endif
#endif

11
include/osg/Node
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@ -135,17 +135,6 @@ class SG_EXPORT Node : public Object
/** Get const update node callback, called during update traversal. */
inline const NodeCallback* getUpdateCallback() const { return _updateCallback.get(); }
#ifdef USE_DEPRECATED_API
/** deprecated. */
void setAppCallback(NodeCallback* nc) { setUpdateCallback(nc); }
/** deprecated. */
inline NodeCallback* getAppCallback() { return getUpdateCallback(); }
/** deprecated. */
inline const NodeCallback* getAppCallback() const { return getUpdateCallback(); }
#endif
/** Get the number of Children of this node which require App traversal,
* since they have an AppCallback attached to them or their children.*/
inline unsigned int getNumChildrenRequiringUpdateTraversal() const { return _numChildrenRequiringUpdateTraversal; }

6
include/osg/Texture2D
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@ -89,10 +89,10 @@ class SG_EXPORT Texture2D : public Texture
/** Set the number of mip map levels the the texture has been created with,
should only be called within an osg::Texuture::apply() and custom OpenGL texture load.*/
void setNumMipmapLevels(unsigned int num) const { _numMimpmapLevels=num; }
void setNumMipmapLevels(unsigned int num) const { _numMipmapLevels=num; }
/** Get the number of mip map levels the the texture has been created with.*/
unsigned int getNumMipmapLevels() const { return _numMimpmapLevels; }
unsigned int getNumMipmapLevels() const { return _numMipmapLevels; }
/** Copy pixels into a 2D texture image.As per glCopyTexImage2D.
@ -132,7 +132,7 @@ class SG_EXPORT Texture2D : public Texture
mutable GLsizei _textureWidth, _textureHeight;
// number of mip map levels the the texture has been created with,
mutable GLsizei _numMimpmapLevels;
mutable GLsizei _numMipmapLevels;
ref_ptr<SubloadCallback> _subloadCallback;

6
include/osg/TextureCubeMap
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@ -99,10 +99,10 @@ class SG_EXPORT TextureCubeMap : public Texture
/** Set the number of mip map levels the the texture has been created with,
should only be called within an osg::Texuture::apply() and custom OpenGL texture load.*/
void setNumMipmapLevels(unsigned int num) const { _numMimpmapLevels=num; }
void setNumMipmapLevels(unsigned int num) const { _numMipmapLevels=num; }
/** Get the number of mip map levels the the texture has been created with.*/
unsigned int getNumMipmapLevels() const { return _numMimpmapLevels; }
unsigned int getNumMipmapLevels() const { return _numMipmapLevels; }
/** On first apply (unless already compiled), create the minmapped
* texture and bind it, subsequent apply will simple bind to texture.*/
@ -162,7 +162,7 @@ class SG_EXPORT TextureCubeMap : public Texture
mutable GLsizei _textureWidth, _textureHeight;
// number of mip map levels the the texture has been created with,
mutable GLsizei _numMimpmapLevels;
mutable GLsizei _numMipmapLevels;
ref_ptr<SubloadCallback> _subloadCallback;

103
include/osgText/Text
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@ -48,10 +48,19 @@ public:
/** Get the font. Return 0 if default is being used.*/
const Font* getFont() const { return _font.get(); }
#ifdef USE_DEPRECATED_API
/* deprecated */
void setFontSize(unsigned int width, unsigned int height)
{
setFontResolution(width,height);
}
#endif
/** Set the Font reference width and height resolution in texels.
* Note, the size may not be supported by current font,
* the closest supported font size will be selected.*/
void setFontSize(unsigned int width, unsigned int height);
void setFontResolution(unsigned int width, unsigned int height);
unsigned int getFontWidth() const { return _fontWidth; }
unsigned int getFontHeight() const { return _fontWidth; }
@ -142,7 +151,6 @@ public:
};
void setAlignment(AlignmentType alignment);
AlignmentType getAlignment() const { return _alignment; }
@ -156,13 +164,22 @@ public:
void setAxisAlignment(AxisAlignment axis);
AxisAlignment getAxisAlignment() const { return _axisAlignment; }
void setRotation(const osg::Quat& quat);
const osg::Quat& getRotation() const { return _rotation; }
void setAutoUpdateEyeMovementTolerance(float tolerance) { _autoUpdateEyeMovementTolerance = tolerance; }
float getAutoUpdateEyeMovementTolerance() const { return _autoUpdateEyeMovementTolerance; }
void setAutoRotateToScreen(bool autoRotateToScreen);
bool getAutoRotateToScreen() const { return _autoRotateToScreen; }
void setAutoScaleToScreen(bool autoScaleToScreen);
bool getAutoScaleToScreen() const { return _autoScaleToScreen; }
void setScale(float scale);
float getScale() const { return _scale; }
enum Layout
{
@ -215,6 +232,40 @@ public:
// make Font a friend to allow it set the _font to 0 if the font is
// forcefully unloaded.
friend class Font;
public:
// internal structures, variable and methods used for rendering of characters.
struct OSGTEXT_EXPORT GlyphQuads
{
typedef std::vector<osg::Vec2> Coords2;
typedef std::vector<osg::Vec3> Coords3;
typedef std::vector<osg::Vec2> TexCoords;
Coords2 _coords;
Coords3 _transformedCoords;
TexCoords _texcoords;
Coords2& getCoords() { return _coords; }
const Coords2& getCoords() const { return _coords; }
Coords3& getTransformedCoords() { return _transformedCoords; }
const Coords3& getTransformedCoords() const { return _transformedCoords; }
TexCoords& getTexCoords() { return _texcoords; }
const TexCoords& getTexCoords() const { return _texcoords; }
};
typedef std::map<osg::ref_ptr<osg::StateSet>,GlyphQuads> TextureGlyphQuadMap;
/** Direct Access to GlyphQuads */
const GlyphQuads* getGlyphQuad(unsigned int index) const
{
if (index>=_textureGlyphQuadMap.size()) return NULL;
TextureGlyphQuadMap::const_iterator itGlyph = _textureGlyphQuadMap.begin();
while((index--) && (itGlyph!=_textureGlyphQuadMap.end())) itGlyph++;
return &itGlyph->second;
}
protected:
@ -238,44 +289,15 @@ protected:
String _text;
osg::Vec3 _position;
AlignmentType _alignment;
AxisAlignment _axisAlignment;
float _scale;
osg::Quat _rotation;
float _autoUpdateEyeMovementTolerance;
bool _autoRotateToScreen;
bool _autoScaleToScreen;
Layout _layout;
osg::Vec4 _color;
unsigned int _drawMode;
public:
// internal structures, variable and methods used for rendering of characters.
struct OSGTEXT_EXPORT GlyphQuads
{
typedef std::vector<osg::Vec2> Coords;
typedef std::vector<osg::Vec2> TexCoords;
Coords _coords;
TexCoords _texcoords;
Coords& getCoords() { return _coords; }
const Coords& getCoords() const { return _coords; }
TexCoords& getTexCoords() { return _texcoords; }
const TexCoords& getTexCoords() const { return _texcoords; }
};
typedef std::map<osg::ref_ptr<osg::StateSet>,GlyphQuads> TextureGlyphQuadMap;
/** Direct Access to GlyphQuads */
const GlyphQuads* getGlyphQuad(unsigned int index) const
{
if (index>=_textureGlyphQuadMap.size()) return NULL;
TextureGlyphQuadMap::const_iterator itGlyph = _textureGlyphQuadMap.begin();
while((index--) && (itGlyph!=_textureGlyphQuadMap.end())) itGlyph++;
return &itGlyph->second;
}
protected:
// iternal map used for rendering. Set up by the computeGlyphRepresentation() method.
TextureGlyphQuadMap _textureGlyphQuadMap;
@ -284,8 +306,11 @@ protected:
// internal caches of the positioning of the text.
osg::Matrix _matrix;
osg::Vec3 _offset;
osg::Vec3 _normal;
mutable osg::BoundingBox _textBB;
void setUpAutoCallback();
void computePositions();
};

8
src/osg/Texture2D.cpp
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@ -23,7 +23,7 @@ using namespace osg;
Texture2D::Texture2D():
_textureWidth(0),
_textureHeight(0),
_numMimpmapLevels(0)
_numMipmapLevels(0)
{
setUseHardwareMipMapGeneration(true);
}
@ -33,7 +33,7 @@ Texture2D::Texture2D(const Texture2D& text,const CopyOp& copyop):
_image(copyop(text._image.get())),
_textureWidth(text._textureWidth),
_textureHeight(text._textureHeight),
_numMimpmapLevels(text._numMimpmapLevels),
_numMipmapLevels(text._numMipmapLevels),
_subloadCallback(text._subloadCallback)
{
}
@ -109,7 +109,7 @@ void Texture2D::apply(State& state) const
else if (_image.valid() && getModifiedTag(contextID) != _image->getModifiedTag())
{
applyTexImage2D_subload(GL_TEXTURE_2D,_image.get(),state,
_textureWidth, _textureHeight, _numMimpmapLevels);
_textureWidth, _textureHeight, _numMipmapLevels);
// update the modified tag to show that it is upto date.
getModifiedTag(contextID) = _image->getModifiedTag();
@ -143,7 +143,7 @@ void Texture2D::apply(State& state) const
applyTexParameters(GL_TEXTURE_2D,state);
applyTexImage2D_load(GL_TEXTURE_2D,_image.get(),state,
_textureWidth, _textureHeight, _numMimpmapLevels);
_textureWidth, _textureHeight, _numMipmapLevels);
// update the modified tag to show that it is upto date.
getModifiedTag(contextID) = _image->getModifiedTag();

8
src/osg/TextureCubeMap.cpp
View File

@ -89,7 +89,7 @@ static GLenum faceTarget[6] =
TextureCubeMap::TextureCubeMap():
_textureWidth(0),
_textureHeight(0),
_numMimpmapLevels(0)
_numMipmapLevels(0)
{
setUseHardwareMipMapGeneration(false);
}
@ -98,7 +98,7 @@ TextureCubeMap::TextureCubeMap(const TextureCubeMap& text,const CopyOp& copyop):
Texture(text,copyop),
_textureWidth(text._textureWidth),
_textureHeight(text._textureHeight),
_numMimpmapLevels(text._numMimpmapLevels),
_numMipmapLevels(text._numMipmapLevels),
_subloadCallback(text._subloadCallback)
{
_images[0] = copyop(text._images[0].get());
@ -224,7 +224,7 @@ void TextureCubeMap::apply(State& state) const
const osg::Image* image = _images[n].get();
if (image && getModifiedTag((Face)n,contextID) != image->getModifiedTag())
{
applyTexImage2D_subload( faceTarget[n], _images[n].get(), state, _textureWidth, _textureHeight, _numMimpmapLevels);
applyTexImage2D_subload( faceTarget[n], _images[n].get(), state, _textureWidth, _textureHeight, _numMipmapLevels);
getModifiedTag((Face)n,contextID) = image->getModifiedTag();
}
}
@ -260,7 +260,7 @@ void TextureCubeMap::apply(State& state) const
const osg::Image* image = _images[n].get();
if (image)
{
applyTexImage2D_load( faceTarget[n], image, state, _textureWidth, _textureHeight, _numMimpmapLevels);
applyTexImage2D_load( faceTarget[n], image, state, _textureWidth, _textureHeight, _numMipmapLevels);
getModifiedTag((Face)n,contextID) = image->getModifiedTag();
}

67
src/osgPlugins/osgText/IO_Text.cpp
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@ -38,13 +38,13 @@ bool Text_readLocalData(osg::Object &obj, osgDB::Input &fr)
}
if (fr[0].matchWord("fontSize"))
if (fr[0].matchWord("fontResolution") || fr[0].matchWord("fontSize"))
{
unsigned int width;
unsigned int height;
if (fr[1].getUInt(width) && fr[2].getUInt(height))
{
text.setFontSize(width,height);
text.setFontResolution(width,height);
fr += 3;
itAdvanced = true;
}
@ -127,6 +127,38 @@ bool Text_readLocalData(osg::Object &obj, osgDB::Input &fr)
}
}
if (fr.matchSequence("scale %f"))
{
float scale;
fr[1].getFloat(scale);
text.setScale(scale);
fr += 2;
itAdvanced = true;
}
if (fr.matchSequence("autoUpdateEyeMovementTolerance %f"))
{
float scale;
fr[1].getFloat(scale);
text.setAutoUpdateEyeMovementTolerance(scale);
fr += 2;
itAdvanced = true;
}
if (fr.matchSequence("autoRotateToScreen TRUE"))
{
text.setAutoRotateToScreen(true);
fr += 2;
itAdvanced = true;
}
if (fr.matchSequence("autoScaleToScreen TRUE"))
{
text.setAutoScaleToScreen(true);
fr += 2;
itAdvanced = true;
}
if (fr.matchSequence("layout %w"))
{
std::string str = fr[1].getStr();
@ -226,7 +258,7 @@ bool Text_writeLocalData(const osg::Object &obj, osgDB::Output &fw)
}
// font resolution
fw.indent() << "fontSize " << text.getFontWidth() << " " << text.getFontHeight() << std::endl;
fw.indent() << "fontResolution " << text.getFontWidth() << " " << text.getFontHeight() << std::endl;
// charater size.
fw.indent() << "characterSize " << text.getCharacterHeight() << " " << text.getCharacterAspectRatio() << std::endl;
@ -264,21 +296,30 @@ bool Text_writeLocalData(const osg::Object &obj, osgDB::Output &fw)
};
// 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;
}
if (text.getScale()!=1.0f)
{
fw.indent() << "scale " << text.getScale() << std::endl;
}
if (text.getAutoUpdateEyeMovementTolerance()!=0.0f)
{
fw.indent() << "autoUpdateEyeMovementTolerance " << text.getAutoUpdateEyeMovementTolerance() << std::endl;
}
if (text.getAutoRotateToScreen())
{
fw.indent() << "autoRotateToScreen TRUE"<< std::endl;
}
if (text.getAutoScaleToScreen())
{
fw.indent() << "autoScaleToScreen TRUE"<< std::endl;
}
// layout
fw.indent() << "layout ";

18
src/osgProducer/ViewerEventHandler.cpp
View File

@ -226,7 +226,7 @@ void ViewerEventHandler::StatsAndHelpDrawCallback::createHelpText()
osgText::Text* text = new osgText::Text;
text->setFont("fonts/arial.ttf");
text->setColor(colorDescription);
text->setFontSize((unsigned int)characterSize,(unsigned int)characterSize);
text->setFontResolution((unsigned int)characterSize,(unsigned int)characterSize);
text->setCharacterSize(characterSize);
text->setPosition(posDescription);
text->setMaximumWidth(maxWidthOfDisplayRegion);
@ -252,7 +252,7 @@ void ViewerEventHandler::StatsAndHelpDrawCallback::createHelpText()
osgText::Text* text = new osgText::Text;
text->setFont("fonts/arial.ttf");
text->setColor(colorOption);
text->setFontSize((unsigned int)characterSize,(unsigned int)characterSize);
text->setFontResolution((unsigned int)characterSize,(unsigned int)characterSize);
text->setCharacterSize(characterSize);
text->setPosition(posOption);
text->setAlignment(osgText::Text::BASE_LINE);
@ -279,7 +279,7 @@ void ViewerEventHandler::StatsAndHelpDrawCallback::createHelpText()
osgText::Text* text = new osgText::Text;
text->setFont("fonts/arial.ttf");
text->setColor(colorExplanation);
text->setFontSize((unsigned int)characterSize,(unsigned int)characterSize);
text->setFontResolution((unsigned int)characterSize,(unsigned int)characterSize);
text->setCharacterSize(characterSize);
text->setPosition(posExplanation);
text->setMaximumWidth(maxWidth);
@ -613,7 +613,7 @@ void ViewerEventHandler::StatsAndHelpDrawCallback::createStatsText()
osgText::Text* text = new osgText::Text;
text->setFont("fonts/arial.ttf");
text->setColor(colorUpdate);
text->setFontSize((unsigned int)characterSize,(unsigned int)characterSize);
text->setFontResolution((unsigned int)characterSize,(unsigned int)characterSize);
text->setCharacterSize(characterSize);
text->setPosition(pos);
text->setAlignment(osgText::Text::BASE_LINE);
@ -627,7 +627,7 @@ void ViewerEventHandler::StatsAndHelpDrawCallback::createStatsText()
_updateTimeText->setFont("fonts/arial.ttf");
_updateTimeText->setColor(colorUpdate);
_updateTimeText->setFontSize((unsigned int)characterSize,(unsigned int)characterSize);
_updateTimeText->setFontResolution((unsigned int)characterSize,(unsigned int)characterSize);
_updateTimeText->setCharacterSize(characterSize);
_updateTimeText->setPosition(pos);
_updateTimeText->setAlignment(osgText::Text::BASE_LINE);
@ -650,7 +650,7 @@ void ViewerEventHandler::StatsAndHelpDrawCallback::createStatsText()
osgText::Text* cullLabel = new osgText::Text;
cullLabel->setFont("fonts/arial.ttf");
cullLabel->setColor(colorCull);
cullLabel->setFontSize((unsigned int)characterSize,(unsigned int)characterSize);
cullLabel->setFontResolution((unsigned int)characterSize,(unsigned int)characterSize);
cullLabel->setCharacterSize(characterSize);
cullLabel->setPosition(pos);
cullLabel->setAlignment(osgText::Text::BASE_LINE);
@ -664,7 +664,7 @@ void ViewerEventHandler::StatsAndHelpDrawCallback::createStatsText()
cullField->setFont("fonts/arial.ttf");
cullField->setColor(colorCull);
cullField->setFontSize((unsigned int)characterSize,(unsigned int)characterSize);
cullField->setFontResolution((unsigned int)characterSize,(unsigned int)characterSize);
cullField->setCharacterSize(characterSize);
cullField->setPosition(pos);
cullField->setAlignment(osgText::Text::BASE_LINE);
@ -680,7 +680,7 @@ void ViewerEventHandler::StatsAndHelpDrawCallback::createStatsText()
osgText::Text* drawLabel = new osgText::Text;
drawLabel->setFont("fonts/arial.ttf");
drawLabel->setColor(colorDraw);
drawLabel->setFontSize((unsigned int)characterSize,(unsigned int)characterSize);
drawLabel->setFontResolution((unsigned int)characterSize,(unsigned int)characterSize);
drawLabel->setCharacterSize(characterSize);
drawLabel->setPosition(pos);
drawLabel->setAlignment(osgText::Text::BASE_LINE);
@ -694,7 +694,7 @@ void ViewerEventHandler::StatsAndHelpDrawCallback::createStatsText()
drawField->setFont("fonts/arial.ttf");
drawField->setColor(colorDraw);
drawField->setFontSize((unsigned int)characterSize,(unsigned int)characterSize);
drawField->setFontResolution((unsigned int)characterSize,(unsigned int)characterSize);
drawField->setCharacterSize(characterSize);
drawField->setPosition(pos);
drawField->setAlignment(osgText::Text::BASE_LINE);

286
src/osgText/Text.cpp
View File

@ -14,12 +14,91 @@
#include <osg/GL>
#include <osg/Math>
#include <osgUtil/CullVisitor>
#include <osgText/Text>
#include "DefaultFont.h"
using namespace osgText;
struct TextCullCallback : public osg::Drawable::CullCallback
{
TextCullCallback(osgText::Text* text):
_firstTimeToInitEyePoint(true),
_previousWidth(0),
_previousHeight(0),
_text(text) {}
/** do customized cull code.*/
virtual bool cull(osg::NodeVisitor *nv, osg::Drawable*, osg::State*) const
{
osgUtil::CullVisitor* cs = static_cast<osgUtil::CullVisitor*>(nv);
if (!cs) return false;
int width = _previousWidth;
int height = _previousHeight;
osg::Viewport* viewport = cs->getViewport();
if (viewport)
{
width = viewport->width();
height = viewport->height();
}
osg::Vec3 eyePoint = cs->getEyeLocal();
bool doUpdate = _firstTimeToInitEyePoint;
if (!_firstTimeToInitEyePoint)
{
osg::Vec3 dv = _previousEyePoint-eyePoint;
if (dv.length2()>_text->getAutoUpdateEyeMovementTolerance()*(eyePoint-_text->getPosition()).length2())
{
doUpdate = true;
}
else if (width!=_previousWidth || height!=_previousHeight)
{
doUpdate = true;
}
}
_firstTimeToInitEyePoint = false;
if (doUpdate)
{
if (_text->getAutoScaleToScreen())
{
float size = 1.0f/cs->pixelSize(_text->getPosition(),1.0f);
_text->setScale(size);
}
if (_text->getAutoRotateToScreen())
{
osg::Quat rotation;
rotation.set(cs->getModelViewMatrix());
_text->setRotation(rotation.inverse());
}
_previousEyePoint = eyePoint;
_previousWidth = width;
_previousHeight = height;
}
return false;
}
mutable bool _firstTimeToInitEyePoint;
mutable osg::Vec3 _previousEyePoint;
mutable int _previousWidth;
mutable int _previousHeight;
mutable osgText::Text* _text;
};
Text::Text():
_fontWidth(32),
_fontHeight(32),
@ -28,8 +107,11 @@ Text::Text():
_maximumWidth(0.0f),
_maximumHeight(0.0f),
_alignment(BASE_LINE),
_axisAlignment(XY_PLANE),
_rotation(),
_scale(1.0f),
_autoUpdateEyeMovementTolerance(0.0f),
_autoRotateToScreen(false),
_autoScaleToScreen(false),
_layout(LEFT_TO_RIGHT),
_color(1.0f,1.0f,1.0f,1.0f),
_drawMode(TEXT)
@ -49,12 +131,17 @@ Text::Text(const Text& text,const osg::CopyOp& copyop):
_text(text._text),
_position(text._position),
_alignment(text._alignment),
_axisAlignment(text._axisAlignment),
_rotation(text._rotation),
_scale(text._scale),
_autoUpdateEyeMovementTolerance(text._autoUpdateEyeMovementTolerance),
_autoRotateToScreen(text._autoRotateToScreen),
_autoScaleToScreen(text._autoScaleToScreen),
_layout(text._layout),
_color(text._color),
_drawMode(text._drawMode)
{
setUpAutoCallback();
computeGlyphRepresentation();
}
Text::~Text()
@ -75,7 +162,7 @@ void Text::setFont(const std::string& fontfile)
setFont(readFontFile(fontfile));
}
void Text::setFontSize(unsigned int width, unsigned int height)
void Text::setFontResolution(unsigned int width, unsigned int height)
{
_fontWidth = width;
_fontHeight = height;
@ -142,8 +229,28 @@ void Text::setAlignment(AlignmentType alignment)
void Text::setAxisAlignment(AxisAlignment axis)
{
_axisAlignment = axis;
computePositions();
switch(axis)
{
case XZ_PLANE:
setRotation(osg::Quat(osg::inDegrees(90.0f),osg::Vec3(1.0f,0.0f,0.0f)));
break;
case YZ_PLANE:
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 XY_PLANE:
setRotation(osg::Quat()); // nop - already on XY plane.
break;
case SCREEN:
setAutoRotateToScreen(true);
break;
}
}
void Text::setAutoRotateToScreen(bool autoRotateToScreen)
{
_autoRotateToScreen = autoRotateToScreen;
setUpAutoCallback();
}
void Text::setRotation(const osg::Quat& quat)
@ -152,6 +259,31 @@ void Text::setRotation(const osg::Quat& quat)
computePositions();
}
void Text::setAutoScaleToScreen(bool autoScaleToScreen)
{
_autoScaleToScreen = autoScaleToScreen;
setUpAutoCallback();
}
void Text::setScale(float scale)
{
_scale = scale;
setUpAutoCallback();
computePositions();
}
void Text::setUpAutoCallback()
{
if (_autoRotateToScreen || _autoScaleToScreen)
{
if (!getCullCallback())
{
setCullCallback(new TextCullCallback(this));
}
}
else setCullCallback(0);
}
void Text::setLayout(Layout layout)
{
_layout = layout;
@ -168,35 +300,12 @@ bool Text::computeBound() const
_bbox.init();
if (_textBB.valid())
{
if (_axisAlignment==SCREEN)
{
// build a sphere around the text box, centerd at the offset point.
float maxlength2 = (_textBB.corner(0)-_offset).length2();
float length2 = (_textBB.corner(1)-_offset).length2();
maxlength2 = osg::maximum(maxlength2,length2);
length2 = (_textBB.corner(2)-_offset).length2();
maxlength2 = osg::maximum(maxlength2,length2);
length2 = (_textBB.corner(3)-_offset).length2();
maxlength2 = osg::maximum(maxlength2,length2);
float radius = sqrtf(maxlength2);
osg::Vec3 center(_position);
_bbox.set(center.x()-radius,center.y()-radius,center.z()-radius,
center.x()+radius,center.y()+radius,center.z()+radius);
}
else
{
_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);
}
}
_bbox_computed = true;
return true;
@ -384,7 +493,7 @@ void Text::computeGlyphRepresentation()
{
const GlyphQuads& glyphquad = titr->second;
for(GlyphQuads::Coords::const_iterator citr = glyphquad._coords.begin();
for(GlyphQuads::Coords2::const_iterator citr = glyphquad._coords.begin();
citr != glyphquad._coords.end();
++citr)
{
@ -421,33 +530,48 @@ void Text::computePositions()
case RIGHT_BASE_LINE: _offset.set((_textBB.xMax()+_textBB.xMin()),0.0f,0.0f); break;
}
// adjust offset for axis alignment
switch(_axisAlignment)
if (_scale!=1.0f || !_rotation.zeroRotation())
{
case XZ_PLANE: _offset.set(_offset.x(),-_offset.z(),_offset.y()); break;
case YZ_PLANE: _offset.set(_offset.z(),_offset.x(),_offset.y()); break;
case XY_PLANE: break; // nop - already on XY plane.
case SCREEN: break; // nop - need to account for rotation in draw as it depends on ModelView _matrix.
_matrix.makeTranslate(-_offset);
if (_scale!=1.0f)
_matrix.postMult(osg::Matrix::scale(_scale,_scale,_scale));
if (!_rotation.zeroRotation())
_matrix.postMult(osg::Matrix::rotate(_rotation));
_matrix.postMult(osg::Matrix::translate(_position));
}
else
{
_matrix.makeTranslate(_position-_offset);
switch(_axisAlignment)
{
case XZ_PLANE: _matrix.preMult(osg::Matrix::rotate(osg::inDegrees(90.0f),1.0f,0.0f,0.0f)); break;
case YZ_PLANE: _matrix.preMult(osg::Matrix::rotate(osg::inDegrees(90.0f),1.0f,0.0f,0.0f)*osg::Matrix::rotate(osg::inDegrees(90.0f),0.0f,0.0f,1.0f)); break;
case XY_PLANE: break; // nop - already on XY plane.
case SCREEN: break; // nop - need to account for rotation in draw as it depends on ModelView _matrix.
}
if (_axisAlignment!=SCREEN && !_rotation.zeroRotation())
// now apply matrix to the glyphs.
for(TextureGlyphQuadMap::iterator titr=_textureGlyphQuadMap.begin();
titr!=_textureGlyphQuadMap.end();
++titr)
{
osg::Matrix matrix;
_rotation.get(matrix);
_matrix.preMult(matrix);
GlyphQuads& glyphquad = titr->second;
GlyphQuads::Coords2& coords2 = glyphquad._coords;
GlyphQuads::Coords3& transformedCoords = glyphquad._transformedCoords;
unsigned int numCoords = coords2.size();
if (numCoords!=transformedCoords.size())
{
transformedCoords.resize(numCoords);
}
for(unsigned int i=0;i<numCoords;++i)
{
transformedCoords[i] = osg::Vec3(coords2[i].x(),coords2[i].y(),0.0f)*_matrix;
}
}
_normal = osg::Matrix::transform3x3(osg::Vec3(0.0f,0.0f,1.0f),_matrix);
_normal.normalize();
dirtyBound();
}
@ -455,30 +579,8 @@ void Text::computePositions()
void Text::drawImplementation(osg::State& state) const
{
glPushMatrix();
// draw part.
glMultMatrixf(_matrix.ptr());
if (_axisAlignment==SCREEN)
{
osg::Matrix mv = state.getModelViewMatrix();
mv.setTrans(0.0f,0.0f,0.0f);
osg::Matrix mat3x3;
mat3x3.invert(mv);
glMultMatrixf(mat3x3.ptr());
if (!_rotation.zeroRotation())
{
osg::Matrix matrix;
_rotation.get(matrix);
glMultMatrixf(matrix.ptr());
}
}
glNormal3f(0.0f,0.0,1.0f);
glNormal3fv(_normal.ptr());
glColor4fv(_color.ptr());
if (_drawMode & TEXT)
@ -495,7 +597,7 @@ void Text::drawImplementation(osg::State& state) const
const GlyphQuads& glyphquad = titr->second;
state.setVertexPointer( 2, GL_FLOAT, 0, &(glyphquad._coords.front()));
state.setVertexPointer( 3, GL_FLOAT, 0, &(glyphquad._transformedCoords.front()));
state.setTexCoordPointer( 0, 2, GL_FLOAT, 0, &(glyphquad._texcoords.front()));
glDrawArrays(GL_QUADS,0,glyphquad._coords.size());
@ -510,12 +612,18 @@ void Text::drawImplementation(osg::State& state) const
{
state.applyTextureMode(0,GL_TEXTURE_2D,osg::StateAttribute::OFF);
osg::Vec3 c00(osg::Vec3(_textBB.xMin(),_textBB.yMin(),_textBB.zMin())*_matrix);
osg::Vec3 c10(osg::Vec3(_textBB.xMax(),_textBB.yMin(),_textBB.zMin())*_matrix);
osg::Vec3 c11(osg::Vec3(_textBB.xMax(),_textBB.yMax(),_textBB.zMin())*_matrix);
osg::Vec3 c01(osg::Vec3(_textBB.xMin(),_textBB.yMax(),_textBB.zMin())*_matrix);
glColor4f(1.0f,1.0f,0.0f,1.0f);
glBegin(GL_LINE_LOOP);
glVertex3f(_textBB.xMin(),_textBB.yMin(),_textBB.zMin());
glVertex3f(_textBB.xMax(),_textBB.yMin(),_textBB.zMin());
glVertex3f(_textBB.xMax(),_textBB.yMax(),_textBB.zMin());
glVertex3f(_textBB.xMin(),_textBB.yMax(),_textBB.zMin());
glVertex3fv(c00.ptr());
glVertex3fv(c10.ptr());
glVertex3fv(c11.ptr());
glVertex3fv(c01.ptr());
glEnd();
}
}
@ -523,23 +631,27 @@ void Text::drawImplementation(osg::State& state) const
if (_drawMode & ALIGNMENT)
{
glColor4f(1.0f,0.0f,1.0f,1.0f);
glTranslatef(_offset.x(),_offset.y(),_offset.z());
float cursorsize = _characterHeight*0.5f*_scale;
osg::Vec3 hl(osg::Vec3(_offset.x()-cursorsize,_offset.y(),_offset.z())*_matrix);
osg::Vec3 hr(osg::Vec3(_offset.x()+cursorsize,_offset.y(),_offset.z())*_matrix);
osg::Vec3 vt(osg::Vec3(_offset.x(),_offset.y()-cursorsize,_offset.z())*_matrix);
osg::Vec3 vb(osg::Vec3(_offset.x(),_offset.y()+cursorsize,_offset.z())*_matrix);
state.applyTextureMode(0,GL_TEXTURE_2D,osg::StateAttribute::OFF);
float cursorsize = _characterHeight*0.5f;
glBegin(GL_LINES);
glVertex3f(-cursorsize,0.0f,0.0f);
glVertex3f(cursorsize,0.0f,0.0f);
glVertex3f(0.0f,-cursorsize,0.0f);
glVertex3f(0.0f,cursorsize,0.0f);
glVertex3fv(hl.ptr());
glVertex3fv(hr.ptr());
glVertex3fv(vt.ptr());
glVertex3fv(vb.ptr());
glEnd();
}
glPopMatrix();
// glPopMatrix();
}
void Text::accept(osg::Drawable::ConstAttributeFunctor& af) const
@ -549,7 +661,7 @@ void Text::accept(osg::Drawable::ConstAttributeFunctor& af) const
++titr)
{
const GlyphQuads& glyphquad = titr->second;
af.apply(osg::Drawable::VERTICES,glyphquad._coords.size(),&(glyphquad._coords.front()));
af.apply(osg::Drawable::VERTICES,glyphquad._transformedCoords.size(),&(glyphquad._transformedCoords.front()));
af.apply(osg::Drawable::TEXTURE_COORDS_0,glyphquad._texcoords.size(),&(glyphquad._texcoords.front()));
}
}
@ -563,8 +675,8 @@ void Text::accept(osg::Drawable::PrimitiveFunctor& pf) const
const GlyphQuads& glyphquad = titr->second;
pf.begin(GL_QUADS);
for(GlyphQuads::Coords::const_iterator itr = glyphquad._coords.begin();
itr!=glyphquad._coords.end();
for(GlyphQuads::Coords3::const_iterator itr = glyphquad._transformedCoords.begin();
itr!=glyphquad._transformedCoords.end();
++itr)
{