The best way to describe LMspring is, as Richard Lico said in one of his fantastic video tutorials (vimeo.com/196234485), "Overlapping Action Through the Miracle of Physics"
LMscript will allow you to add an "overlap effect" on top of the translation of your existing animation.
LMspring script Demo - Overlapping Animation Through Physics:
HOW TO USE LMspring:
# SPRING PREVIS 1.04.18
# 1. Select something (normaly an animation control, but it could be anything).
# 2. Execute SPRING PREVIS script (by clicking on the shelf icon).
# 3. Change or animate the 'Goal Weight' value (under 'luismiParticleShape') until you are happy with the result.
# 4. Execute SPRING BAKE script (by clicking on the shelf icon).
# SPRING BAKE 1.04.18 #
# 1. Your can adjust the Range Slider to chose the frames to be baked.
# 2. Execute SPRING BAKE by clicking on the shelf icon.
HOW TO INSTALL LMspring:
First place the LMspring folder where you want it to be, for example: "C:/Users/YOU/Documents/maya/scripts".
Once you have the LMspring folder where you want it to be, just drag`n`drop the "install.mel" file into Maya (drop it in any viewport). This will add the LMspring tool to the current shelf.
If you have a LMspring previous version installed, right click in the LMspring icons in the shelf and delete them before you drag and drop the new "install.mel" file into the Maya viewport.
Luismi Herrera (@luismiherrera)