Auto-stretchy IK solver 1.0.0 for Maya (maya plugin)

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// features :

1. automaticly stretchy IK solution

2. smoothly transition between normal status and stretchy status

// limitation :

1. two bone IK (NOTE: this will be eliminated next release )

// bug report and suggestions to:

       Developer : Ma Yi ( Amadou )

       Email : mayi3d@126.com

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// install :

1. unzip

2. copy file yimaIksolver.py to the folder C:Program FilesAutodeskMaya8.5binplug-ins

        (NOTE: this path is where you install your Maya )

   { or copy it to any place where the environment variable MAYA_PLUG_IN_PATH point to }

3. copy folder yima_tools to the folder C:Program FilesAutodeskMaya8.5Pythonlibsite-packagesmaya

        (NOTE: This path is where the maya python module exists . We add yima_tools module to your maya module by doing this )

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// how to use :

1. load the scripted plug-in in the Maya plug-in manager window :

      (a)   Window -> Settings/Preferences -> Plug-in Manager
    
      (b)   load the plug-in yimaIksolver.py by checking it on

2. create the solver node (chose one ):

      by MEL :

              createNode -name stretchyik yimaIksolverNode;

      or by python :

              import maya.cmds as cmds

              cmds.createNode("yimaIksolverNode", name="stretchyik")

3. create ik handle (chose one corresponding to step 2):

      manually :

          (a) create the IK handle as usual
 
          (b) open the attribute editor of the new IK handle , go to "IK Solver Attributes" section ,

              and change the value of "IK Solver" to "stretchyik" .

      or by MEL :

          ikHandle -sol "stretchyik" -sj joint1 -ee joint3

                 (NOTE: here , the name "stretchyik" comes from Step 2 mel command ,

                   and you may need to change joint1 and joint3 to your joint names )

      or by python :

           import maya.cmds as cmds

           cmds.ikHandle(sol="stretchyik", sj="joint1", ee="joint3")