171 lines
5.0 KiB
C++
171 lines
5.0 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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 <osgViewer/Viewer>
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#include <osg/Material>
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#include <osg/Geode>
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#include <osg/BlendFunc>
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#include <osg/Depth>
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#include <osg/Projection>
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#include <osg/AutoTransform>
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#include <osg/Geometry>
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#include <osgText/Text>
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#include <iostream>
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osg::Node* createLabel(const osg::Vec3& pos, float size, const std::string& label, osgText::Text::AxisAlignment axisAlignment)
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{
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osg::Geode* geode = new osg::Geode();
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std::string timesFont("fonts/arial.ttf");
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{
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osgText::Text* text = new osgText::Text;
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geode->addDrawable( text );
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text->setFont(timesFont);
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text->setPosition(pos);
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text->setCharacterSize(size);
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text->setAxisAlignment(axisAlignment);
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text->setAlignment(osgText::Text::CENTER_CENTER);
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text->setText(label);
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}
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return geode;
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}
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osg::Node* createLabel3(const osg::Vec3& pos, float size, const std::string& label)
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{
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osg::Geode* geode = new osg::Geode();
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std::string timesFont("fonts/arial.ttf");
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{
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osgText::Text* text = new osgText::Text;
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geode->addDrawable( text );
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text->setFont(timesFont);
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text->setPosition(pos);
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text->setFontResolution(40,40);
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text->setCharacterSize(size);
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text->setAlignment(osgText::Text::CENTER_CENTER);
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text->setAutoRotateToScreen(true);
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text->setCharacterSizeMode(osgText::Text::OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT);
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text->setText(label);
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}
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return geode;
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}
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osg::Node* createAxis(const osg::Vec3& s, const osg::Vec3& e, int numReps, osg::AutoTransform::AutoRotateMode autoRotateMode, osgText::Text::AxisAlignment axisAlignment, const std::string& str)
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{
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osg::Group* group = new osg::Group;
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osg::Vec3 dv = e-s;
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dv /= float(numReps-1);
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osg::Vec3 pos = s;
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bool useAuto = true;
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if (useAuto)
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{
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osg::Vec3Array* vertices = new osg::Vec3Array;
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for(int i=0;i<numReps;++i)
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{
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osg::AutoTransform* at = new osg::AutoTransform;
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at->setPosition(pos);
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at->setAutoRotateMode(autoRotateMode);
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at->addChild(createLabel(osg::Vec3(0.0f,0.0f,0.0f),dv.length()*0.2f,str, axisAlignment));
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vertices->push_back(pos);
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pos += dv;
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group->addChild(at);
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}
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osg::Vec4Array* colors = new osg::Vec4Array;
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colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
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osg::Geometry* geom = new osg::Geometry;
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geom->setVertexArray(vertices);
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geom->setColorArray(colors);
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geom->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP,0,vertices->size()));
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osg::Geode* geode = new osg::Geode;
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geode->addDrawable(geom);
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group->addChild(geode);
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}
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else
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{
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osg::Vec3Array* vertices = new osg::Vec3Array;
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for(int i=0;i<numReps;++i)
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{
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group->addChild(createLabel3(osg::Vec3(pos),dv.length()*0.5f,str));
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vertices->push_back(pos);
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pos += dv;
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}
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osg::Vec4Array* colors = new osg::Vec4Array;
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colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
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osg::Geometry* geom = new osg::Geometry;
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geom->setVertexArray(vertices);
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geom->setColorArray(colors);
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geom->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP,0,vertices->size()));
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osg::Geode* geode = new osg::Geode;
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geode->addDrawable(geom);
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group->addChild(geode);
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}
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return group;
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}
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osg::Node* createScene()
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{
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osg::Group* root = new osg::Group;
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// int numReps = 3333;
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int numReps = 10;
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root->addChild(createAxis(osg::Vec3(0.0,0.0,0.0),osg::Vec3(1000.0,0.0,0.0),numReps,osg::AutoTransform::ROTATE_TO_CAMERA,osgText::Text::XY_PLANE, "ROTATE_TO_CAMERA"));
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root->addChild(createAxis(osg::Vec3(0.0,0.0,0.0),osg::Vec3(0.0,1000.0,0.0),numReps,osg::AutoTransform::ROTATE_TO_SCREEN,osgText::Text::XY_PLANE, "ROTATE_TO_SCREEN"));
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root->addChild(createAxis(osg::Vec3(0.0,0.0,0.0),osg::Vec3(0.0,0.0,1000.0),numReps,osg::AutoTransform::NO_ROTATION,osgText::Text::XZ_PLANE, "NO_ROTATION"));
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return root;
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}
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int main(int, char**)
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{
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// construct the viewer.
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osgViewer::Viewer viewer;
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// set the scene to render
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viewer.setSceneData(createScene());
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// run the viewers frame loop
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return viewer.run();
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}
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