19db0c1674
Vivek's email to osg-submissions: "I'm happy to release the osgdragger nodekit to the OSG community. I implemented the nodekit for my company, Fugro-Jason Inc., and they have kindly agreed to open source it. The nodekit contains a few draggers but it should be easy to build new draggers on top of it. The design of the nodekit is based on a SIGGRAPH 2002 course - "Design and Implementation of Direct Manipulation in 3D". You can find the course notes at http://www.pauliface.com/Sigg02/index.html. Reading pages 20 - 29 of the course notes should give you a fair understanding of how the nodekit works. The source code also contains an example of how to use the draggers."
102 lines
3.3 KiB
C++
102 lines
3.3 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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//osgManipulator - Copyright (C) 2007 Fugro-Jason B.V.
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#include <osgManipulator/ScaleAxisDragger>
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#include <osg/ShapeDrawable>
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#include <osg/Geometry>
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#include <osg/LineWidth>
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#include <osg/Quat>
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using namespace osgManipulator;
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ScaleAxisDragger::ScaleAxisDragger()
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{
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_xDragger = new osgManipulator::Scale1DDragger();
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addChild(_xDragger.get());
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addDragger(_xDragger.get());
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_yDragger = new osgManipulator::Scale1DDragger();
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addChild(_yDragger.get());
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addDragger(_yDragger.get());
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_zDragger = new osgManipulator::Scale1DDragger();
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addChild(_zDragger.get());
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addDragger(_zDragger.get());
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setParentDragger(getParentDragger());
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}
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ScaleAxisDragger::~ScaleAxisDragger()
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{
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}
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void ScaleAxisDragger::setupDefaultGeometry()
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{
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// Create a line.
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osg::Geode* lineGeode = new osg::Geode;
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{
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osg::Geometry* geometry = new osg::Geometry();
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osg::Vec3Array* vertices = new osg::Vec3Array(2);
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(*vertices)[0] = osg::Vec3(0.0f,0.0f,0.0f);
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(*vertices)[1] = osg::Vec3(1.0f,0.0f,0.0f);
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geometry->setVertexArray(vertices);
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geometry->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINES,0,2));
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lineGeode->addDrawable(geometry);
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}
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// Turn of lighting for line and set line width.
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{
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osg::LineWidth* linewidth = new osg::LineWidth();
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linewidth->setWidth(2.0f);
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lineGeode->getOrCreateStateSet()->setAttributeAndModes(linewidth, osg::StateAttribute::ON);
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lineGeode->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
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}
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// Add line to all the individual 1D draggers.
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_xDragger->addChild(lineGeode);
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_yDragger->addChild(lineGeode);
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_zDragger->addChild(lineGeode);
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osg::Geode* geode = new osg::Geode;
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// Create a box.
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geode->addDrawable(new osg::ShapeDrawable(new osg::Box(osg::Vec3(1.0f,0.0f,0.0f), 0.05)));
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// Add geode to all 1D draggers.
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_xDragger->addChild(geode);
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_yDragger->addChild(geode);
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_zDragger->addChild(geode);
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// Rotate Z-axis dragger appropriately.
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{
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osg::Quat rotation; rotation.makeRotate(osg::Vec3(1.0f, 0.0f, 0.0f), osg::Vec3(0.0f, 0.0f, 1.0f));
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_zDragger->setMatrix(osg::Matrix(rotation));
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}
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// Rotate Y-axis dragger appropriately.
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{
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osg::Quat rotation; rotation.makeRotate(osg::Vec3(1.0f, 0.0f, 0.0f), osg::Vec3(0.0f, 1.0f, 0.0f));
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_yDragger->setMatrix(osg::Matrix(rotation));
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}
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// Send different colors for each dragger.
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_xDragger->setColor(osg::Vec4(1.0f,0.0f,0.0f,1.0f));
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_yDragger->setColor(osg::Vec4(0.0f,1.0f,0.0f,1.0f));
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_zDragger->setColor(osg::Vec4(0.0f,0.0f,1.0f,1.0f));
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}
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