osg::Group* createModel()
{
// no database loaded so automatically create Ed Levin Park
osg::Group* group = new osg::Group;
// the base and sky subgraphs go to set the earth sky of the
// model and clear the color and depth buffer for us, by using
// osg::Depth, and setting their bin numbers to less than 0,
// to force them to draw before the rest of the scene.
osg::ClearNode* clearNode = new osg::ClearNode;
clearNode->setRequiresClear(false); // we've got base and sky to do it.
// use a transform to make the sky and base move around with the eye point.
osg::Transform* transform = new MoveEarthySkyWithEyePointTransform;
// transform's value isn't knowm until in the cull traversal so its bounding
// volume is can't be determined, therefore culling will be invalid,
// so switch it off, this causes all our paresnts to switch culling
// off as well. But don't worry, culling will be back on once underneath
// this node or any other branch above this transform.
transform->setCullingActive(false);
// add the sky and base layer.
transform->addChild(makeSky()); // bin number -2 so drawn first.
transform->addChild(makeBase()); // bin number -1 so draw second.
// add the transform to the earth sky.
clearNode->addChild(transform);
// add to earth sky to the scene.
group->addChild(clearNode);
// the rest of the scene is drawn after the base and sky above.
group->addChild(makeTrees()); // will drop into a transparent, depth sorted bin (1)
group->addChild(makeTerrain()); // will drop into default bin - state sorted 0
group->addChild(makeTank()); // will drop into default bin - state sorted 0
// add the following in the future...
// makeGliders
// makeClouds
return group;
}
/*** 全方向移動型ロボットの生成 ***/
void makeOmni()
{
makeBase();
makeWheel();
}