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/* OpenSceneGraph example, osgautotransform.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <osgUtil/Optimizer>
#include <osgDB/ReadFile>
#include <osgViewer/Viewer>
#include <osg/Material>
#include <osg/Geode>
#include <osg/BlendFunc>
#include <osg/Depth>
#include <osg/Projection>
#include <osg/AutoTransform>
#include <osg/Geometry>
#include <osgDB/WriteFile>
#include <osgText/Text>
#include <iostream>
osg::Node* createLabel(const osg::Vec3& pos, float size, const std::string& label, osgText::Text::AxisAlignment axisAlignment)
{
osg::Geode* geode = new osg::Geode();
std::string timesFont("fonts/arial.ttf");
{
osgText::Text* text = new osgText::Text;
geode->addDrawable( text );
text->setFont(timesFont);
text->setPosition(pos);
text->setCharacterSize(size);
text->setAxisAlignment(axisAlignment);
text->setAlignment(osgText::Text::CENTER_CENTER);
text->setText(label);
}
return geode;
}
osg::Node* createLabel3(const osg::Vec3& pos, float size, const std::string& label)
{
osg::Geode* geode = new osg::Geode();
std::string timesFont("fonts/arial.ttf");
{
osgText::Text* text = new osgText::Text;
geode->addDrawable( text );
text->setFont(timesFont);
text->setPosition(pos);
text->setFontResolution(40,40);
text->setCharacterSize(size);
text->setAlignment(osgText::Text::CENTER_CENTER);
text->setAutoRotateToScreen(true);
text->setCharacterSizeMode(osgText::Text::OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT);
text->setText(label);
}
return geode;
}
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)
{
osg::Group* group = new osg::Group;
osg::Vec3 dv = e-s;
dv /= float(numReps-1);
osg::Vec3 pos = s;
bool useAuto = true;
if (useAuto)
{
osg::Vec3Array* vertices = new osg::Vec3Array;
for(int i=0;i<numReps;++i)
{
osg::AutoTransform* at = new osg::AutoTransform;
at->setPosition(pos);
at->setAutoRotateMode(autoRotateMode);
at->addChild(createLabel(osg::Vec3(0.0f,0.0f,0.0f),dv.length()*0.2f,str, axisAlignment));
vertices->push_back(pos);
pos += dv;
group->addChild(at);
}
osg::Vec4Array* colors = new osg::Vec4Array;
colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
osg::Geometry* geom = new osg::Geometry;
geom->setVertexArray(vertices);
geom->setColorArray(colors, osg::Array::BIND_OVERALL);
geom->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP,0,vertices->size()));
osg::Geode* geode = new osg::Geode;
geode->addDrawable(geom);
group->addChild(geode);
}
else
{
osg::Vec3Array* vertices = new osg::Vec3Array;
for(int i=0;i<numReps;++i)
{
group->addChild(createLabel3(osg::Vec3(pos),dv.length()*0.5f,str));
vertices->push_back(pos);
pos += dv;
}
osg::Vec4Array* colors = new osg::Vec4Array;
colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
osg::Geometry* geom = new osg::Geometry;
geom->setVertexArray(vertices);
geom->setColorArray(colors, osg::Array::BIND_OVERALL);
geom->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP,0,vertices->size()));
osg::Geode* geode = new osg::Geode;
geode->addDrawable(geom);
group->addChild(geode);
}
return group;
}
osg::Node* createAutoScale(const osg::Vec3& position, float characterSize, const std::string& message, float minScale=0.0, float maxScale=FLT_MAX)
{
std::string timesFont("fonts/arial.ttf");
osgText::Text* text = new osgText::Text;
text->setCharacterSize(characterSize);
text->setText(message);
text->setFont(timesFont);
text->setAlignment(osgText::Text::CENTER_CENTER);
osg::Geode* geode = new osg::Geode;
geode->addDrawable(text);
geode->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
osg::AutoTransform* at = new osg::AutoTransform;
at->addChild(geode);
at->setAutoRotateMode(osg::AutoTransform::ROTATE_TO_SCREEN);
at->setAutoScaleToScreen(true);
at->setMinimumScale(minScale);
at->setMaximumScale(maxScale);
at->setPosition(position);
return at;
}
osg::Node* createScene()
{
osg::Group* root = new osg::Group;
// int numReps = 3333;
int numReps = 10;
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"));
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"));
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"));
root->addChild(createAutoScale(osg::Vec3(500.0,500.0,500.0), 25.0, "AutoScale with no min, max limits"));
root->addChild(createAutoScale(osg::Vec3(500.0,500.0,300.0), 25.0, "AutoScale with minScale = 1, maxScale = 2.0 ", 1, 2.0));
root->addChild(createAutoScale(osg::Vec3(500.0,500.0,700.0), 25.0, "AutoScale with minScale = 0.0, maxScale = 5.0 ", 0.0, 5.0));
return root;
}
int main(int, char**)
{
// construct the viewer.
osgViewer::Viewer viewer;
// set the scene to render
viewer.setSceneData(createScene());
// run the viewers frame loop
return viewer.run();
}
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