Moved TextNode from osgText into example/osgtext3D in prep for 3.0
This commit is contained in:
Robert Osfield
@@ -1,9 +1,14 @@
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SET(TARGET_SRC
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TextNode.cpp
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osgtext3D_orig.cpp
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osgtext3D_test.cpp
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osgtext3D.cpp
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)
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SET(TARGET_H
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TextNode.h
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)
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SET(TARGET_ADDED_LIBRARIES osgText )
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#### end var setup ###
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SETUP_EXAMPLE(osgtext3D)
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291
examples/osgtext3D/TextNode.cpp
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291
examples/osgtext3D/TextNode.cpp
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@@ -0,0 +1,291 @@
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2010 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include "TextNode.h"
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#include "../../src/osgText/GlyphGeometry.h"
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#include <osg/PositionAttitudeTransform>
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#include <osg/Geode>
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#include <osgUtil/SmoothingVisitor>
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#include <osg/io_utils>
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using namespace osgText;
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/////////////////////////////////////////////////////////////////////////////////////////
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//
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// Layout
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//
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Layout::Layout()
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{
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}
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Layout::Layout(const Layout& layout, const osg::CopyOp& copyop):
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osg::Object(layout,copyop)
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{
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}
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osg::ref_ptr<Layout>& Layout::getDefaultLayout()
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{
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static OpenThreads::Mutex s_DefaultLayoutMutex;
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_DefaultLayoutMutex);
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static osg::ref_ptr<Layout> s_defaultLayout = new Layout;
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return s_defaultLayout;
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}
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void Layout::layout(TextNode& text) const
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{
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OSG_NOTICE<<"Layout::layout"<<std::endl;
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Font* font = text.getActiveFont();
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Style* style = text.getActiveStyle();
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TextTechnique* technique = text.getTextTechnique();
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const String& str = text.getText();
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if (!text.getTextTechnique())
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{
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OSG_NOTICE<<"Warning: no TextTechnique assigned to Layout"<<std::endl;
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return;
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}
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osg::Vec3 pos(0.0f,0.0f,0.0f);
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float characterSize = text.getCharacterSize();
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osg::Vec3 size(characterSize, characterSize, 0.0);
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if (style)
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{
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size.y() = characterSize;
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size.z() = characterSize;
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}
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osgText::FontResolution resolution(32,32);
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if (style)
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{
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resolution.first = static_cast<unsigned int>(static_cast<float>(resolution.first)*style->getSampleDensity());
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resolution.second = static_cast<unsigned int>(static_cast<float>(resolution.second)*style->getSampleDensity());
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}
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float characterWidthScale = 1.0f;
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float characterHeightScale = 1.0f;
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bool textIs3D = (style && style->getThicknessRatio()!=0.0);
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if (!textIs3D)
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{
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characterWidthScale = 1.0f/static_cast<float>(resolution.first);
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characterHeightScale = 1.0f/static_cast<float>(resolution.second);
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}
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osgText::KerningType kerningType = osgText::KERNING_DEFAULT;
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technique->start();
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unsigned int previousCharcode = 0;
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for(unsigned int i=0; i<str.size(); ++i)
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{
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unsigned int charcode = str[i];
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if (size.z()==0.0f)
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{
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osgText::Glyph* glyph = font->getGlyph(resolution, charcode);
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if (glyph)
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{
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technique->addCharacter(pos, size, glyph, style);
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pos += osg::Vec3(size.x()*(glyph->getHorizontalAdvance()*characterWidthScale), 0.0f ,0.0f);
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}
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}
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else
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{
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osgText::Glyph3D* glyph = font->getGlyph3D(charcode);
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OSG_NOTICE<<"pos = "<<pos<<", charcode="<<charcode<<", glyph="<<glyph<< std::endl;
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if (glyph)
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{
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osg::Vec3 local_scale( size );
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technique->addCharacter(pos, local_scale, glyph, style);
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pos += osg::Vec3(size.x()*glyph->getHorizontalWidth(), 0.0f ,0.0f);
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}
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}
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if (previousCharcode!=0 && charcode!=0)
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{
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osg::Vec2 offset = font->getKerning(previousCharcode, charcode, kerningType);
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OSG_NOTICE<<" offset = "<<offset<< std::endl;
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pos.x() += offset.x();
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pos.y() += offset.y();
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}
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previousCharcode = charcode;
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}
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technique->finish();
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}
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/////////////////////////////////////////////////////////////////////////////////////////
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//
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// TextTechnique
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//
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TextTechnique::TextTechnique():
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_textNode(0)
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{
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}
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TextTechnique::TextTechnique(const TextTechnique& technique, const osg::CopyOp& copyop):
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osg::Object(technique, copyop),
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_textNode(0)
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{
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}
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osg::ref_ptr<TextTechnique>& TextTechnique::getDefaultTextTechinque()
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{
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static OpenThreads::Mutex s_DefaultTextTechniqueMutex;
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_DefaultTextTechniqueMutex);
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static osg::ref_ptr<TextTechnique> s_defaultTextTechnique = new TextTechnique;
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return s_defaultTextTechnique;
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}
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void TextTechnique::start()
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{
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OSG_NOTICE<<"TextTechnique::start()"<<std::endl;
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}
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void TextTechnique::addCharacter(const osg::Vec3& position, const osg::Vec3& size, Glyph* glyph, Style* style)
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{
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OSG_NOTICE<<"TextTechnique::addCharacter 2D("<<position<<", "<<size<<", "<<glyph<<", "<<style<<")"<<std::endl;
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}
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void TextTechnique::addCharacter(const osg::Vec3& position, const osg::Vec3& size, Glyph3D* glyph, Style* style)
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{
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OSG_NOTICE<<"TextTechnique::addCharacter 3D("<<position<<", "<<size<<", "<<glyph<<", "<<style<<")"<<std::endl;
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osg::ref_ptr<osg::PositionAttitudeTransform> transform = new osg::PositionAttitudeTransform;
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transform->setPosition(position);
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transform->setAttitude(osg::Quat(osg::inDegrees(90.0),osg::Vec3d(1.0,0.0,0.0)));
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transform->setScale(size);
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osg::ref_ptr<osg::Geode> geode = new osg::Geode;
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const Bevel* bevel = style ? style->getBevel() : 0;
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bool outline = style ? style->getOutlineRatio()>0.0f : false;
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float width = style->getThicknessRatio();
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float creaseAngle = 30.0f;
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bool smooth = true;
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if (bevel)
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{
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float thickness = bevel->getBevelThickness();
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osg::ref_ptr<osg::Geometry> glyphGeometry = osgText::computeGlyphGeometry(glyph, thickness, width);
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osg::ref_ptr<osg::Geometry> textGeometry = osgText::computeTextGeometry(glyphGeometry.get(), *bevel, width);
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osg::ref_ptr<osg::Geometry> shellGeometry = outline ? osgText::computeShellGeometry(glyphGeometry.get(), *bevel, width) : 0;
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if (textGeometry.valid()) geode->addDrawable(textGeometry.get());
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if (shellGeometry.valid()) geode->addDrawable(shellGeometry.get());
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// create the normals
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if (smooth && textGeometry.valid())
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{
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osgUtil::SmoothingVisitor::smooth(*textGeometry, osg::DegreesToRadians(creaseAngle));
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}
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}
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else
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{
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osg::ref_ptr<osg::Geometry> textGeometry = osgText::computeTextGeometry(glyph, width);
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if (textGeometry.valid()) geode->addDrawable(textGeometry.get());
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// create the normals
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if (smooth && textGeometry.valid())
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{
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osgUtil::SmoothingVisitor::smooth(*textGeometry, osg::DegreesToRadians(creaseAngle));
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}
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}
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transform->addChild(geode.get());
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_textNode->addChild(transform.get());
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transform->getOrCreateStateSet()->setMode(GL_NORMALIZE, osg::StateAttribute::ON);
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}
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void TextTechnique::finish()
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{
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OSG_NOTICE<<"TextTechnique::finish()"<<std::endl;
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}
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void TextTechnique::traverse(osg::NodeVisitor& nv)
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{
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// OSG_NOTICE<<"TextTechnique::traverse()"<<std::endl;
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if (_textNode) _textNode->Group::traverse(nv);
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}
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/////////////////////////////////////////////////////////////////////////////////////////
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//
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// TextNode
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//
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TextNode::TextNode():
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_characterSize(1.0f)
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{
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}
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TextNode::TextNode(const TextNode& text, const osg::CopyOp& copyop):
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osg::Group(text, copyop)
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{
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}
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TextNode::~TextNode()
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{
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setTextTechnique(0);
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}
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void TextNode::traverse(osg::NodeVisitor& nv)
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{
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if (_technique.valid())
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{
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_technique->traverse(nv);
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}
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else
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{
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Group::traverse(nv);
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}
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}
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void TextNode::setTextTechnique(TextTechnique* technique)
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{
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if (_technique==technique) return;
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if (_technique.valid()) _technique->setTextNode(0);
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if (TextTechnique::getDefaultTextTechinque()==technique)
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{
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OSG_NOTICE<<"Warning: Attempt to assign DefaultTextTechnique() prototype to TextNode::setTextTechnique(..), assigning a clone() of it instead."<<std::endl;
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technique = new TextTechnique(*TextTechnique::getDefaultTextTechinque());
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}
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_technique = technique;
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if (_technique.valid()) _technique->setTextNode(this);
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}
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void TextNode::update()
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{
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getActiveLayout()->layout(*this);
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}
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void TextNode::setText(const std::string& str)
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{
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_string.set(str);
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}
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154
examples/osgtext3D/TextNode.h
Normal file
154
examples/osgtext3D/TextNode.h
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@@ -0,0 +1,154 @@
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2010 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGTEXT_TEXTNODE
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#define OSGTEXT_TEXTNODE 1
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#include <osg/Group>
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#include <osg/Quat>
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#include <osgUtil/CullVisitor>
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#include <osgText/Font>
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#include <osgText/String>
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#include <osgText/Glyph>
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#include <osgText/Style>
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namespace osgText {
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// forward declare
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class TextNode;
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class OSGTEXT_EXPORT Layout : public osg::Object
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{
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public:
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Layout();
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Layout(const Layout& layout, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Object(osgText,Layout)
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/// default Layout implementation used if no other is specified on TextNode
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static osg::ref_ptr<Layout>& getDefaultLayout();
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virtual void layout(TextNode& text) const;
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protected:
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};
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class OSGTEXT_EXPORT TextTechnique : public osg::Object
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{
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public:
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TextTechnique();
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TextTechnique(const TextTechnique& technique, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Object(osgText, TextTechnique)
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TextNode* getTextNode() { return _textNode; }
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const TextNode* getTextNode() const { return _textNode; }
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/// default TextTechnique implementation used if no other is specified on TextNode
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static osg::ref_ptr<TextTechnique>& getDefaultTextTechinque();
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/// start building a new charater layout
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virtual void start();
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/// called by Layout engine to place individual characters
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virtual void addCharacter(const osg::Vec3& position, const osg::Vec3& size, Glyph* glyph, Style* style);
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/// called by Layout engine to place individual characters
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virtual void addCharacter(const osg::Vec3& position, const osg::Vec3& size, Glyph3D* glyph, Style* style);
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/// finish building new charater layout
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virtual void finish();
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/// provide traversal control
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virtual void traverse(osg::NodeVisitor& nv);
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protected:
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friend class TextNode;
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void setTextNode(TextNode* textNode) { _textNode = textNode; }
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TextNode* _textNode;
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};
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class OSGTEXT_EXPORT TextNode : public osg::Group
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{
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public:
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TextNode();
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TextNode(const TextNode& text, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Node(osgText, TextNode)
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virtual void traverse(osg::NodeVisitor& nv);
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void setFont(Font* font) { _font = font; }
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Font* getFont() { return _font.get(); }
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const Font* getFont() const { return _font.get(); }
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Font* getActiveFont() { return _font.valid() ? _font.get() : Font::getDefaultFont().get(); }
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const Font* getActiveFont() const { return _font.valid() ? _font.get() : Font::getDefaultFont().get(); }
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void setStyle(Style* style) { _style = style; }
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Style* getStyle() { return _style.get(); }
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const Style* getStyle() const { return _style.get(); }
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Style* getActiveStyle() { return _style.valid() ? _style.get() : Style::getDefaultStyle().get(); }
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const Style* getActiveStyle() const { return _style.valid() ? _style.get() : Style::getDefaultStyle().get(); }
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void setLayout(Layout* layout) { _layout = layout; }
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Layout* getLayout() { return _layout.get(); }
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const Layout* getLayout() const { return _layout.get(); }
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const Layout* getActiveLayout() const { return _layout.valid() ? _layout.get() : Layout::getDefaultLayout().get(); }
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void setTextTechnique(TextTechnique* technique);
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TextTechnique* getTextTechnique() { return _technique.get(); }
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const TextTechnique* getTextTechnique() const { return _technique.get(); }
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void setText(const std::string& str);
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void setText(const String& str) { _string = str; }
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String& getText() { return _string; }
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const String& getText() const { return _string; }
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void setPosition(const osg::Vec3d& position) { _position = position; }
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const osg::Vec3d& getPosition() const { return _position; }
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void setRotation(const osg::Quat& rotation) { _rotation = rotation; }
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const osg::Quat& getRotation() const { return _rotation; }
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void setCharacterSize(float characterSize) { _characterSize = characterSize; }
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float getCharacterSize() const { return _characterSize; }
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/// force a regeneration of the rendering backend required to represent the text.
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virtual void update();
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protected:
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virtual ~TextNode();
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osg::ref_ptr<Font> _font;
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osg::ref_ptr<Style> _style;
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osg::ref_ptr<Layout> _layout;
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osg::ref_ptr<TextTechnique> _technique;
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String _string;
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osg::Vec3d _position;
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osg::Quat _rotation;
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float _characterSize;
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};
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}
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#endif
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@@ -30,9 +30,10 @@
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#include <osgViewer/ViewerEventHandlers>
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#include <osg/io_utils>
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#include <osgText/TextNode>
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#include <osgText/Text3D>
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#include "TextNode.h"
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extern int main_orig(int, char**);
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extern int main_test(int, char**);
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