386 lines
12 KiB
C++
386 lines
12 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 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 <osgUtil/Optimizer>
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#include <osgDB/ReadFile>
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#include <osgDB/WriteFile>
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#include <osgProducer/Viewer>
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#include <osg/Geode>
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#include <osg/Projection>
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#include <osg/MatrixTransform>
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#include <osg/ShapeDrawable>
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#include <osg/Sequence>
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#include <osgText/Font>
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#include <osgText/Text>
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osg::Group* createHUDText()
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{
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osg::Group* rootNode = new osg::Group;
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osgText::Font* font = osgText::readFontFile("fonts/arial.ttf");
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osg::Geode* geode = new osg::Geode;
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rootNode->addChild(geode);
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float windowHeight = 1024.0f;
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float windowWidth = 1280.0f;
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float margin = 50.0f;
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osg::Vec4 layoutColor(1.0f,1.0f,0.0f,1.0f);
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float layoutCharacterSize = 20.0f;
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{
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osgText::Text* text = new osgText::Text;
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text->setFont(font);
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text->setColor(layoutColor);
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text->setCharacterSize(layoutCharacterSize);
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text->setPosition(osg::Vec3(margin,windowHeight-margin,0.0f));
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// the default layout is left to right, typically used in languages
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// originating from europe such as English, French, German, Spanish etc..
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text->setLayout(osgText::Text::LEFT_TO_RIGHT);
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text->setText("text->setLayout(osgText::Text::LEFT_TO_RIGHT);");
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geode->addDrawable(text);
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}
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{
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osgText::Text* text = new osgText::Text;
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text->setFont(font);
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text->setColor(layoutColor);
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text->setCharacterSize(layoutCharacterSize);
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text->setPosition(osg::Vec3(windowWidth-margin,windowHeight-margin,0.0f));
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// right to left layouts would be used for hebrew or arabic fonts.
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text->setLayout(osgText::Text::RIGHT_TO_LEFT);
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text->setText("text->setLayout(osgText::Text::RIGHT_TO_LEFT);");
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geode->addDrawable(text);
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}
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{
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osgText::Text* text = new osgText::Text;
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text->setFont(font);
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text->setColor(layoutColor);
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text->setPosition(osg::Vec3(margin,windowHeight-margin,0.0f));
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text->setCharacterSize(layoutCharacterSize);
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// vertical font layout would be used for asian fonts.
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text->setLayout(osgText::Text::VERTICAL);
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text->setText("text->setLayout(osgText::Text::VERTICAL);");
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geode->addDrawable(text);
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}
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osg::Vec4 fontSizeColor(0.0f,1.0f,1.0f,1.0f);
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float fontSizeCharacterSize = 30;
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osg::Vec3 cursor = osg::Vec3(margin*2,windowHeight-margin*2,0.0f);
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{
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osgText::Text* text = new osgText::Text;
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text->setFont(font);
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text->setColor(fontSizeColor);
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text->setCharacterSize(fontSizeCharacterSize);
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text->setPosition(cursor);
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// use text that uses 10 by 10 texels as a target resolution for fonts.
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text->setFontSize(10,10); // blocky but small texture memory usage
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text->setText("text->setFontSize(10,10); // blocky but small texture memory usage");
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geode->addDrawable(text);
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}
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cursor.y() -= fontSizeCharacterSize;
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{
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osgText::Text* text = new osgText::Text;
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text->setFont(font);
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text->setColor(fontSizeColor);
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text->setCharacterSize(fontSizeCharacterSize);
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text->setPosition(cursor);
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// use text that uses 10 by 10 texels as a target resolution for fonts.
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text->setFontSize(20,20); // smoother but higher texture memory usage (but still quite low).
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text->setText("text->setFontSize(20,20); // smoother but higher texture memory usage (but still quite low).");
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geode->addDrawable(text);
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}
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cursor.y() -= fontSizeCharacterSize;
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{
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osgText::Text* text = new osgText::Text;
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text->setFont(font);
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text->setColor(fontSizeColor);
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text->setCharacterSize(fontSizeCharacterSize);
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text->setPosition(cursor);
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// use text that uses 10 by 10 texels as a target resolution for fonts.
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text->setFontSize(40,40); // even smoother but again higher texture memory usage.
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text->setText("text->setFontSize(40,40); // even smoother but again higher texture memory usage.");
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geode->addDrawable(text);
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}
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osg::Vec4 characterSizeColor(1.0f,0.0f,1.0f,1.0f);
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cursor.y() -= fontSizeCharacterSize*2.0f;
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{
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osgText::Text* text = new osgText::Text;
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text->setFont(font);
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text->setColor(characterSizeColor);
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text->setFontSize(20,20);
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text->setPosition(cursor);
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// use text that 20 units high.
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text->setCharacterSize(20); // small
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text->setText("text->setCharacterSize(15.0f); // small");
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geode->addDrawable(text);
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}
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cursor.y() -= 30.0f;
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{
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osgText::Text* text = new osgText::Text;
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text->setFont(font);
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text->setColor(characterSizeColor);
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text->setFontSize(30,30);
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text->setPosition(cursor);
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// use text that 20 units high.
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text->setCharacterSize(30.0f); // medium
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text->setText("text->setCharacterSize(30.0f); // medium");
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geode->addDrawable(text);
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}
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cursor.y() -= 50.0f;
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{
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osgText::Text* text = new osgText::Text;
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text->setFont(font);
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text->setColor(characterSizeColor);
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text->setFontSize(40,40);
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text->setPosition(cursor);
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// use text that uses 10 by 10 texels as a target resolution for fonts.
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text->setCharacterSize(60.0f); // large
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text->setText("text->setCharacterSize(60.0f); // large");
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geode->addDrawable(text);
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}
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cursor.x() = 500;
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cursor.y() = margin;
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osg::Sequence* sequence = new osg::Sequence;
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sequence->setMode(osg::Sequence::START);
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sequence->setInterval(osg::Sequence::LOOP, 0, -1);
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sequence->setDuration(1.0f, -1);
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// osg::Group* sequence = new osg::Group;
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// rootNode->addChild(sequence);
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{
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for(unsigned int i=osgText::Text::LEFT_TOP;i<=osgText::Text::BASE_LINE;i++)
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{
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osg::Geode* alignmentGeode = new osg::Geode;
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sequence->addChild(alignmentGeode);
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sequence->setTime(i, 1.0f);
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osgText::Text* text = new osgText::Text;
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text->setFont(font);
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text->setColor(characterSizeColor);
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text->setPosition(cursor);
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text->setDrawMode(osgText::Text::TEXT|osgText::Text::ALIGNMENT|osgText::Text::BOUNDINGBOX);
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text->setAlignment((osgText::Text::AlignmentType)i);
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text->setText("text->setAlignment();");
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alignmentGeode->addDrawable(text);
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cursor.y() += 40.0f;
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}
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}
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rootNode->addChild(sequence);
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return rootNode;
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}
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osg::Group* create3DText()
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{
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osg::Geode* geode = new osg::Geode;
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osgText::Text* text1 = new osgText::Text;
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text1->setFont("fonts/times.ttf");
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text1->setAxisAlignment(osgText::Text::XY_PLANE);
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text1->setText("XY_PLANE");
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geode->addDrawable(text1);
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osgText::Text* text2 = new osgText::Text;
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text2->setFont("fonts/times.ttf");
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text2->setPosition(osg::Vec3(0.0f,0.0f,0.0f));
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text2->setAxisAlignment(osgText::Text::YZ_PLANE);
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text2->setText("YZ_PLANE");
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geode->addDrawable(text2);
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osgText::Text* text3 = new osgText::Text;
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text3->setFont("fonts/times.ttf");
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text3->setPosition(osg::Vec3(00.0f,00.0f,00.0f));
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text3->setAxisAlignment(osgText::Text::XZ_PLANE);
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text3->setText("XZ_PLANE");
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geode->addDrawable(text3);
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osg::Vec3 screenCenter(300.0f,00.0f,00.0f);
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osgText::Text* text4 = new osgText::Text;
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text4->setFont("fonts/times.ttf");
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text4->setAxisAlignment(osgText::Text::SCREEN);
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text4->setPosition(screenCenter);
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text4->setText("SCREEN");
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geode->addDrawable(text4);
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osg::ShapeDrawable* shape = new osg::ShapeDrawable(new osg::Sphere(osg::Vec3(screenCenter),2.0f));
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shape->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::ON);
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geode->addDrawable(shape);
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osg::Group* rootNode = new osg::Group;
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rootNode->addChild(geode);
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return rootNode;
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}
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int main( int argc, char **argv )
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{
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// use an ArgumentParser object to manage the program arguments.
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osg::ArgumentParser arguments(&argc,argv);
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// set up the usage document, in case we need to print out how to use this program.
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arguments.getApplicationUsage()->setCommandLineUsage(arguments.getProgramName()+" [options] [filename] ...");
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arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
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// construct the viewer.
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osgProducer::Viewer viewer(arguments);
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// set up the value with sensible default event handlers.
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viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS);
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// get details on keyboard and mouse bindings used by the viewer.
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viewer.getUsage(*arguments.getApplicationUsage());
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// if user request help write it out to cout.
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if (arguments.read("-h") || arguments.read("--help"))
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{
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arguments.getApplicationUsage()->write(std::cout);
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return 1;
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}
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// any option left unread are converted into errors to write out later.
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arguments.reportRemainingOptionsAsUnrecognized();
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// report any errors if they have occured when parsing the program aguments.
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if (arguments.errors())
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{
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arguments.writeErrorMessages(std::cout);
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return 1;
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}
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// read the scene from the list of file specified commandline args.
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osg::ref_ptr<osg::Node> rootNode = osgDB::readNodeFiles(arguments);
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// prepare scene.
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{
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if (rootNode.valid())
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{
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// optimize the scene graph, remove rendundent nodes and state etc.
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osgUtil::Optimizer optimizer;
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optimizer.optimize(rootNode.get());
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}
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// make sure the root node is group so we can add extra nodes to it.
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osg::Group* group = dynamic_cast<osg::Group*>(rootNode.get());
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if (!group)
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{
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group = new osg::Group;
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if (rootNode.valid()) group->addChild(rootNode.get());
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rootNode = group;
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}
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{
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// create the hud.
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osg::Projection* projection = new osg::Projection;
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projection->setMatrix(osg::Matrix::ortho2D(0,1280,0,1024));
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osg::MatrixTransform* modelview_abs = new osg::MatrixTransform;
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modelview_abs->setReferenceFrame(osg::Transform::RELATIVE_TO_ABSOLUTE);
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modelview_abs->setMatrix(osg::Matrix::identity());
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modelview_abs->addChild(createHUDText());
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projection->addChild(modelview_abs);
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group->addChild(projection);
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}
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osg::MatrixTransform* scale = new osg::MatrixTransform;
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scale->setMatrix(osg::Matrix::scale(1.0f,1.0f,1.0f));
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scale->addChild(create3DText());
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group->addChild(scale);
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}
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// set the scene to render
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viewer.setSceneData(rootNode.get());
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osgDB::writeNodeFile(*rootNode,"test.osg");
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// create the windows and run the threads.
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viewer.realize(Producer::CameraGroup::ThreadPerCamera);
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while( !viewer.done() )
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{
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// wait for all cull and draw threads to complete.
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viewer.sync();
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// update the scene by traversing it with the the update visitor which will
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// call all node update callbacks and animations.
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viewer.update();
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// fire off the cull and draw traversals of the scene.
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viewer.frame();
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}
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return 0;
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}
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