clothPaintAttrCmd.cpp

//-
// ==========================================================================
// Copyright 1995,2006,2008 Autodesk, Inc. All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk
// license agreement provided at the time of installation or download,
// or which otherwise accompanies this software in either electronic
// or hard copy form.
// ==========================================================================
//+

// PLUGIN NAME: clothPaintAttrCmd v1.0
// FILE   Name: clothPaintAttrCmd.cpp

// DESCRIPTION:   This MEL command has no flags, takes two string arguments and returns a double array.
//                                First and second argument indicate cloth mesh node and cloth paint attribute respectively.
//
// USAGE      :   Command   :  ClothPaintAttr
//                                argument1 :  cloth mesh Node
//                                argument2 :  cloth paint attribute name (e.g. density, scale, bendRate, bendResistance, 
//                                                         stretchResistance, shearresistance, airDamping, clothDamping, clothFriction,
//                                                         thickness, thicknessForce, staticFriction, dynamicFriction and bendAngle.
//
// Example        :   setAttr clothShape1.densityWeights -type doubleArray 33 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ;
//                ClothPaintAttr clothShape1 densityWeights
//                //Result: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 //

// AUTHOR     :   Raja.T.
// TESTED ON  :   Windows/Irix/Linux (WIL)

#include <maya/MFnPlugin.h>
#include <maya/MArgList.h>
#include <maya/MGlobal.h>
#include <maya/MFnDependencyNode.h>
#include <maya/MItDependencyGraph.h>
#include <maya/MString.h>
#include <maya/MStringArray.h>
#include <maya/MDoubleArray.h>
#include <maya/MFnDoubleArrayData.h>
#include "clothPaintAttrCmd.h"


//
// Description: Constructor.
// Use: public
ClothPaintAttrCommand::ClothPaintAttrCommand()
{

}

//
// Description: Destructor.
// Use: public
ClothPaintAttrCommand::~ClothPaintAttrCommand()
{

}

//
// Description: Constructs a ClothPaintAttrCommand
// Use: public
void* ClothPaintAttrCommand::creator()

{
        return new ClothPaintAttrCommand;
}

//
// Description:  Return whether the command is undoable or not.  
// Use: public
bool ClothPaintAttrCommand::isUndoable() const
{
   return false;
}

//
// Description:  Perform the action of the command.
// Use: public
MStatus ClothPaintAttrCommand::doIt(const MArgList& args)
{
        //Checking for Cloth Plug-in.
        MString pluginCheck = "pluginInfo -q -l CpClothPlugin.mll";
        int pluginResult;
        MGlobal::executeCommand(pluginCheck,pluginResult);
        if(pluginResult != 1)
        {
          displayError("\"CpClothPlugin\" should be loaded to use this Plug-in!");
      return MS::kFailure;
        }
        
        //   PARSING

   //Error message if number of arguments are not equal to two  
   MString nodeName[2];
   if (!args.length() || args.length() != 2)
   {
          displayError("Cloth Mesh node and Cloth paint attribute name must be specified as\n          Command's first and second argument respectively!");
      return MS::kFailure;
   }
   else
   {
      nodeName[0] = args.asString(0);
          nodeName[1] = args.asString(1);
   }

   // PARSING FIRST ARGUMENT
   

   bool isFirstArg = false;
   bool isSecondArg = false;
 

   MString clothMesh = "isClothMesh "+ nodeName[0];
   int result;
   MGlobal::executeCommand(clothMesh, result);
   if(result == 1)
   {
                isFirstArg = true;
   }

   // PARSING SECOND ARGUMENT   
   
   if(   nodeName[1] == "bendAngle"              ||             nodeName[1] == "densityWeights"                         ||
                 nodeName[1] == "scaleWeights"           ||             nodeName[1] == "bendRateWeights"                        ||
                 nodeName[1] == "thicknessWeights"       ||             nodeName[1] == "airDampingWeights"                      ||
                 nodeName[1] == "clothDampingWeights"    ||             nodeName[1] == "clothFrictionWeights"           ||
                 nodeName[1] == "staticFrictionWeights"  ||             nodeName[1] == "thicknessForceWeights"          ||
                 nodeName[1] == "bendResistanceWeights"  ||             nodeName[1] == "dynamicFrictionWeights"         ||
                 nodeName[1] == "shearResistanceWeights" ||             nodeName[1] == "stretchResistanceWeights")
   {
                isSecondArg = true;
   }

   //Error message if both arguments are not proper.
   if(isFirstArg == false && isSecondArg == false)
   {
           displayError("Cloth Mesh node and Cloth paint attribute name must be specified as\n          Command's first and second argument respectively!");
           return MS::kFailure;
   }
   //Error message if second argument is not proper.
   else if(isFirstArg == true && isSecondArg == false)
   {
           displayError("A cloth paint attribute name must be specified as command's second argument!");
           return MS::kFailure;
   }
   //Error message if first argument is not proper.
   else if(isFirstArg == false && isSecondArg == true)
   {
            displayError("A cloth Mesh node must be specified as command's first argument!");
                return MS::kFailure;
   }
   
   //  STORE CLOTH MESH NODE
   MSelectionList nodeList;
   nodeList.add(nodeName[0]);
   MObject clothNode;
   nodeList.getDependNode(0, clothNode);

   //  GET DOUBLE ARRAY                 
   MFnDependencyNode fnDN(clothNode);
   MPlug paintAttrPlug = fnDN.findPlug(nodeName[1]); 
   MObject doubleArrayData; 
   paintAttrPlug.getValue(doubleArrayData); 
   MFnDoubleArrayData fnDAD(doubleArrayData); 
   MDoubleArray finalArray = fnDAD.array();

    // SET RESULT
    setResult(finalArray);
    return MS::kSuccess;
}

// Initialize Plugin
MStatus initializePlugin(MObject obj)
{
   
   MStatus status;
   MFnPlugin plugin(obj, PLUGIN_COMPANY, MGlobal::mayaVersion().asChar(), "Any");

   //Register the plugin command.
   status = plugin.registerCommand("ClothPaintAttr", ClothPaintAttrCommand::creator);
   if (!status)
   {
      status.perror("registerCommand");
      return status;
   }

   return status;
}


// Uninitialize Plugin
MStatus uninitializePlugin(MObject obj)
{
   MStatus status;
   MFnPlugin plugin(obj);

   status = plugin.deregisterCommand("ClothPaintAttr");
   if (!status)
   {
      status.perror("deregisterCommand");
      return status;
   }

   return status;
}