// minimum plugin
// used Brent's ppt slides to configure and maya help for content
// also used Brent's includes and public function declarations

// move .mll file to maya/pluging/  when built

#include <maya/Mstring.h>
#include <maya/MArgList.h>
#include <maya/MFnPlugin.h>
#include <maya/MPxCommand.h>
#include <maya/MGlobal.h>
#include <maya/MFnMesh.h>
#include <maya/MItSelectionList.h>
#include <maya/MItSelectionList.h>
#include <maya/MDagPath.h>
#include <maya/MPointArray.h>
/*
#include <maya/MArgList.h>
#include <maya/MArgDatabase.h>
#include <maya/MDagPath.h>
#include <maya/MDGModifier.h>
#include <maya/MFnFluid.h>
#include <maya/MFnMesh.h>
#include <maya/MFnTransform.h>
#include <maya/MGlobal.h>
#include <maya/MItSelectionList.h>
#include <maya/MPlug.h>
#include <maya/MSelectionList.h>
#include <maya/MStatus.h>
#include <maya/MString.h>
#include <maya/MSyntax.h>
*/
class accessVertices : public MPxCommand
{
public:
	//creator function
	static void *creator();

	//command execution functions
	virtual MStatus doIt(const MArgList &args);
};

MStatus accessVertices::doIt( const MArgList& args ) {
	MStatus stat;

//get the list of user selected objects at the time the plugin was called
	MSelectionList selection;
	selection.clear();
	MGlobal::getActiveSelectionList(selection);
	MItSelectionList iter(selection);

	//grab the  poly meshes in the user selected objects
	MDagPath meshDagPath;
	MFnMesh  mesh;
	iter.setFilter(MFn::kMesh);
	for (iter.reset();!iter.isDone();iter.next())
	{
		//get the dag path to the current mesh
		iter.getDagPath(meshDagPath);

		//get a function wrapper for the mesh
		mesh.setObject(meshDagPath);
		MFnMesh fnMesh( meshDagPath ); 
		// get the vertices that are part of the current mesh
		MPointArray vertexList; 
		fnMesh.getPoints( vertexList, MSpace::kObject ); 
		// iterate through all the vertices 
		for ( unsigned i = 0; i < vertexList.length(); i++ ) { 
			vertexList[i].cartesianize(); 
			MPoint point = vertexList[i]; 
			point.x = 20*point.x;
			vertexList[i] = point;
		}
		fnMesh.setPoints(vertexList);
	}
	return stat;
}

void* accessVertices::creator() {
	return new accessVertices;
}

MStatus initializePlugin( MObject obj ) {
	MFnPlugin plugin( obj, "Alias", "1.0", "Any" );
	plugin.registerCommand( "accessVertices", accessVertices::creator );
	return MS::kSuccess;
}

MStatus uninitializePlugin( MObject obj ) {
	MFnPlugin plugin( obj );
	plugin.deregisterCommand( "accessVertices" );
	return MS::kSuccess;
}