269 lines
11 KiB
C++
269 lines
11 KiB
C++
/* -*-c++-*-
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* Copyright (C) 2008 Cedric Pinson <cedric.pinson@plopbyte.net>
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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 <iostream>
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#include <osg/Geometry>
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#include <osg/MatrixTransform>
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#include <osg/Geode>
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#include <osgViewer/Viewer>
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#include <osgGA/TrackballManipulator>
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#include <osgDB/WriteFile>
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#include <osgUtil/SmoothingVisitor>
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#include <osg/io_utils>
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#include <osgAnimation/Bone>
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#include <osgAnimation/Skeleton>
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#include <osgAnimation/RigGeometry>
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#include <osgAnimation/BasicAnimationManager>
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#include <osgAnimation/UpdateMatrixTransform>
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#include <osgAnimation/UpdateBone>
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#include <osgAnimation/StackedTransform>
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#include <osgAnimation/StackedTranslateElement>
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#include <osgAnimation/StackedRotateAxisElement>
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osg::Geode* createAxis()
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{
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osg::Geode* geode (new osg::Geode());
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osg::Geometry* geometry (new osg::Geometry());
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osg::Vec3Array* vertices (new osg::Vec3Array());
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vertices->push_back (osg::Vec3 ( 0.0, 0.0, 0.0));
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vertices->push_back (osg::Vec3 ( 1.0, 0.0, 0.0));
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vertices->push_back (osg::Vec3 ( 0.0, 0.0, 0.0));
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vertices->push_back (osg::Vec3 ( 0.0, 1.0, 0.0));
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vertices->push_back (osg::Vec3 ( 0.0, 0.0, 0.0));
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vertices->push_back (osg::Vec3 ( 0.0, 0.0, 1.0));
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geometry->setVertexArray (vertices);
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osg::Vec4Array* colors (new osg::Vec4Array());
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colors->push_back (osg::Vec4 (1.0f, 0.0f, 0.0f, 1.0f));
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colors->push_back (osg::Vec4 (1.0f, 0.0f, 0.0f, 1.0f));
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colors->push_back (osg::Vec4 (0.0f, 1.0f, 0.0f, 1.0f));
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colors->push_back (osg::Vec4 (0.0f, 1.0f, 0.0f, 1.0f));
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colors->push_back (osg::Vec4 (0.0f, 0.0f, 1.0f, 1.0f));
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colors->push_back (osg::Vec4 (0.0f, 0.0f, 1.0f, 1.0f));
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geometry->setColorArray (colors, osg::Array::BIND_PER_VERTEX);
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geometry->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINES,0,6));
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geode->addDrawable( geometry );
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return geode;
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}
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osgAnimation::RigGeometry* createTesselatedBox(int nsplit, float size)
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{
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osgAnimation::RigGeometry* riggeometry = new osgAnimation::RigGeometry;
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osg::Geometry* geometry = new osg::Geometry;
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osg::ref_ptr<osg::Vec3Array> vertices (new osg::Vec3Array());
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osg::ref_ptr<osg::Vec3Array> colors (new osg::Vec3Array());
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geometry->setVertexArray (vertices.get());
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geometry->setColorArray (colors.get(), osg::Array::BIND_PER_VERTEX);
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float step = size / static_cast<float>(nsplit);
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float s = 0.5f/4.0f;
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for (int i = 0; i < nsplit; i++)
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{
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float x = -1.0f + static_cast<float>(i) * step;
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std::cout << x << std::endl;
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vertices->push_back (osg::Vec3 ( x, s, s));
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vertices->push_back (osg::Vec3 ( x, -s, s));
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vertices->push_back (osg::Vec3 ( x, -s, -s));
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vertices->push_back (osg::Vec3 ( x, s, -s));
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osg::Vec3 c (0.0f,0.0f,0.0f);
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c[i%3] = 1.0f;
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colors->push_back (c);
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colors->push_back (c);
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colors->push_back (c);
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colors->push_back (c);
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}
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osg::ref_ptr<osg::UIntArray> array = new osg::UIntArray;
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for (int i = 0; i < nsplit - 1; i++)
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{
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int base = i * 4;
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array->push_back(base);
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array->push_back(base+1);
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array->push_back(base+4);
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array->push_back(base+1);
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array->push_back(base+5);
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array->push_back(base+4);
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array->push_back(base+3);
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array->push_back(base);
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array->push_back(base+4);
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array->push_back(base+7);
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array->push_back(base+3);
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array->push_back(base+4);
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array->push_back(base+5);
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array->push_back(base+1);
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array->push_back(base+2);
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array->push_back(base+2);
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array->push_back(base+6);
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array->push_back(base+5);
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array->push_back(base+2);
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array->push_back(base+3);
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array->push_back(base+7);
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array->push_back(base+6);
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array->push_back(base+2);
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array->push_back(base+7);
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}
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geometry->addPrimitiveSet(new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, array->size(), &array->front()));
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geometry->setUseDisplayList( false );
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riggeometry->setSourceGeometry(geometry);
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return riggeometry;
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}
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void initVertexMap(osgAnimation::Bone* b0,
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osgAnimation::Bone* b1,
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osgAnimation::Bone* b2,
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osgAnimation::RigGeometry* geom,
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osg::Vec3Array* array)
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{
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osgAnimation::VertexInfluenceMap* vim = new osgAnimation::VertexInfluenceMap;
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(*vim)[b0->getName()].setName(b0->getName());
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(*vim)[b1->getName()].setName(b1->getName());
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(*vim)[b2->getName()].setName(b2->getName());
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for (int i = 0; i < (int)array->size(); i++)
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{
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float val = (*array)[i][0];
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std::cout << val << std::endl;
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if (val >= -1.0f && val <= 0.0f)
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(*vim)[b0->getName()].push_back(osgAnimation::VertexIndexWeight(i,1.0f));
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else if ( val > 0.0f && val <= 1.0f)
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(*vim)[b1->getName()].push_back(osgAnimation::VertexIndexWeight(i,1.0f));
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else if ( val > 1.0f)
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(*vim)[b2->getName()].push_back(osgAnimation::VertexIndexWeight(i,1.0f));
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}
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geom->setInfluenceMap(vim);
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}
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int main (int argc, char* argv[])
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{
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osg::ArgumentParser arguments(&argc, argv);
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osgViewer::Viewer viewer(arguments);
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viewer.setCameraManipulator(new osgGA::TrackballManipulator());
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osg::ref_ptr<osgAnimation::Skeleton> skelroot = new osgAnimation::Skeleton;
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skelroot->setDefaultUpdateCallback();
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osg::ref_ptr<osgAnimation::Bone> root = new osgAnimation::Bone;
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root->setInvBindMatrixInSkeletonSpace(osg::Matrix::inverse(osg::Matrix::translate(-1.0,0.0,0.0)));
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root->setName("root");
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osgAnimation::UpdateBone* pRootUpdate = new osgAnimation::UpdateBone("root");
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pRootUpdate->getStackedTransforms().push_back(new osgAnimation::StackedTranslateElement("translate",osg::Vec3(-1.0f,0.0f,0.0f)));
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root->setUpdateCallback(pRootUpdate);
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osg::ref_ptr<osgAnimation::Bone> right0 = new osgAnimation::Bone;
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right0->setInvBindMatrixInSkeletonSpace(osg::Matrix::inverse(osg::Matrix::translate(0.0,0.0,0.0)));
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right0->setName("right0");
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osgAnimation::UpdateBone* pRight0Update = new osgAnimation::UpdateBone("right0");
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pRight0Update->getStackedTransforms().push_back(new osgAnimation::StackedTranslateElement("translate", osg::Vec3(1.0f,0.0f,0.0f)));
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pRight0Update->getStackedTransforms().push_back(new osgAnimation::StackedRotateAxisElement("rotate", osg::Vec3(0.0f,0.0f,1.0f), 0.0));
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right0->setUpdateCallback(pRight0Update);
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osg::ref_ptr<osgAnimation::Bone> right1 = new osgAnimation::Bone;
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right1->setInvBindMatrixInSkeletonSpace(osg::Matrix::inverse(osg::Matrix::translate(1.0,0.0,0.0)));
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right1->setName("right1");
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osgAnimation::UpdateBone* pRight1Update = new osgAnimation::UpdateBone("right1");
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pRight1Update->getStackedTransforms().push_back(new osgAnimation::StackedTranslateElement("translate", osg::Vec3(1.0f,0.0f,0.0f)));
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pRight1Update->getStackedTransforms().push_back(new osgAnimation::StackedRotateAxisElement("rotate", osg::Vec3(0.0f,0.0f,1.0f), 0.0));
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right1->setUpdateCallback(pRight1Update);
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root->addChild(right0.get());
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right0->addChild(right1.get());
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skelroot->addChild(root.get());
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osg::Group* scene = new osg::Group;
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osg::ref_ptr<osgAnimation::BasicAnimationManager> manager = new osgAnimation::BasicAnimationManager;
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scene->setUpdateCallback(manager.get());
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osgAnimation::Animation* anim = new osgAnimation::Animation;
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{
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osgAnimation::FloatKeyframeContainer* keys0 = new osgAnimation::FloatKeyframeContainer;
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keys0->push_back(osgAnimation::FloatKeyframe(0.0,0.0f));
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keys0->push_back(osgAnimation::FloatKeyframe(3.0,osg::PI_2));
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keys0->push_back(osgAnimation::FloatKeyframe(6.0,osg::PI_2));
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osgAnimation::FloatLinearSampler* sampler = new osgAnimation::FloatLinearSampler;
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sampler->setKeyframeContainer(keys0);
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osgAnimation::FloatLinearChannel* channel = new osgAnimation::FloatLinearChannel(sampler);
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channel->setName("rotate");
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channel->setTargetName("right0");
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anim->addChannel(channel);
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}
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{
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osgAnimation::FloatKeyframeContainer* keys1 = new osgAnimation::FloatKeyframeContainer;
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keys1->push_back(osgAnimation::FloatKeyframe(0.0,0.0f));
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keys1->push_back(osgAnimation::FloatKeyframe(3.0,0.0f));
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keys1->push_back(osgAnimation::FloatKeyframe(6.0,osg::PI_2));
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osgAnimation::FloatLinearSampler* sampler = new osgAnimation::FloatLinearSampler;
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sampler->setKeyframeContainer(keys1);
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osgAnimation::FloatLinearChannel* channel = new osgAnimation::FloatLinearChannel(sampler);
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channel->setName("rotate");
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channel->setTargetName("right1");
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anim->addChannel(channel);
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}
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manager->registerAnimation(anim);
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manager->buildTargetReference();
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// let's start !
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manager->playAnimation(anim);
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// we will use local data from the skeleton
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osg::MatrixTransform* rootTransform = new osg::MatrixTransform;
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rootTransform->setMatrix(osg::Matrix::rotate(osg::PI_2,osg::Vec3(1.0f,0.0f,0.0f)));
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right0->addChild(createAxis());
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right0->setDataVariance(osg::Object::DYNAMIC);
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right1->addChild(createAxis());
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right1->setDataVariance(osg::Object::DYNAMIC);
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osg::MatrixTransform* trueroot = new osg::MatrixTransform;
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trueroot->setMatrix(osg::Matrix(root->getMatrixInBoneSpace().ptr()));
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trueroot->addChild(createAxis());
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trueroot->addChild(skelroot.get());
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trueroot->setDataVariance(osg::Object::DYNAMIC);
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rootTransform->addChild(trueroot);
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scene->addChild(rootTransform);
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osgAnimation::RigGeometry* geom = createTesselatedBox(4, 4.0f);
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osg::Geode* geode = new osg::Geode;
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geode->addDrawable(geom);
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skelroot->addChild(geode);
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osg::ref_ptr<osg::Vec3Array> src = dynamic_cast<osg::Vec3Array*>(geom->getSourceGeometry()->getVertexArray());
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geom->getOrCreateStateSet()->setMode(GL_LIGHTING, false);
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geom->setDataVariance(osg::Object::DYNAMIC);
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initVertexMap(root.get(), right0.get(), right1.get(), geom, src.get());
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// let's run !
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viewer.setSceneData( scene );
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viewer.realize();
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while (!viewer.done())
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{
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viewer.frame();
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}
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osgDB::writeNodeFile(*scene, "skinning.osg");
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return 0;
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}
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