/**
* Generates two global proc that enable the creation and adding of the
* SoftVolumeSphere node and the SurfaceGenerator node.
* author Hannes Ricklefs
* NCCA 2005
*
*/
global proc createMetaball() {
    string $metaball = `createNode softVolumeSphere`;
    
    /*Get the transform*/
    string $transform[] = `pickWalk -d up`;
    //select $transform[0];
    
    string $surface = `createNode SurfaceGenerator`;
	
	string $mesh = `createNode -n "mbMesh#" mesh`; 
    sets -add initialShadingGroup $mesh;
    
    string $polyNormal = `createNode polyNormalPerVertex`;
    
    connectAttr ($surface+".out_mesh") ($polyNormal+".inputPolymesh");
    connectAttr ($polyNormal+".output") ($mesh+".inMesh");
	
	connectAttr ($transform[0]+".worldMatrix") ($surface+".ellipsoid_TWorldMatrix[0]");
	connectAttr ($transform[0]+".boundingBoxMin") ($surface+".ellipsoid_BBoxMin[0]");
	connectAttr ($transform[0]+".boundingBoxMax") ($surface+".ellipsoid_BBoxMax[0]");
	connectAttr ($metaball+".radius") ($surface+".ellipsoid_Radius[0]");
	connectAttr ($metaball+".weight") ($surface+".ellipsoid_Weight[0]");
   
}

global proc addMetaball() {
	string $ls[]=`ls -sl`;
    for($nn in $ls){
        string $cs[]=stringArrayRemoveDuplicates(`listConnections -d 1 -t SurfaceGenerator $nn`);
        for($mbc in $cs){
            string $metaball = `createNode softVolumeSphere`;
    		/*Get the transform*/
    		string $transform[] = `pickWalk -d up`;
            connectAttr -na ($transform[0]+".worldMatrix") ($mbc+".ellipsoid_TWorldMatrix");
            connectAttr -na ($transform[0]+".boundingBoxMin") ($mbc+".ellipsoid_BBoxMin");
            connectAttr -na ($transform[0]+".boundingBoxMax") ($mbc+".ellipsoid_BBoxMax");
			connectAttr -na ($metaball+".weight") ($mbc+".ellipsoid_Weight");
            connectAttr -na ($metaball+".radius") ($mbc+".ellipsoid_Radius");
			return;
        }
    }
    error "select an existing metaball";
}