# ghost\_IK (virtual Inverse Kinematics bone/physic bone IK/C++)

**URL:** <https://blenderartists.org/t/ghost-ik-virtual-inverse-kinematics-bone-physic-bone-ik-c/1101771>\
**Category:** Released Add-ons and Extensions\
**Tags:** add-ons, free, rigging\
**Created:** [March 31, 2018, 10:22pm UTC](https://blenderartists.org/t/ghost-ik-virtual-inverse-kinematics-bone-physic-bone-ik-c/1101771 "2018-03-31T22:22:17Z")\
**Posts on this page:** 1\
**Showing post:** 221

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**Author:** ![imdjs](https://blenderartists.org/user_avatar/blenderartists.org/imdjs/32/443251_2.png) [@imdjs](https://blenderartists.org/u/imdjs)\
**Post date:** [May 21, 2023, 7:25pm UTC](https://blenderartists.org/t/ghost-ik-virtual-inverse-kinematics-bone-physic-bone-ik-c/1101771/221 "2023-05-21T19:25:05Z")

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update to blender 3.51  
Added the function of **Presimulation frame** , that is, simulate a certain number of frames first as the initial frame without the sagging process of bones, which is convenient to do some loop actions when the first and last actions are closer.  
Using **Quaternion interpolation** slerp the baked physical bonekeyframes of beginning and ending, , to connect the loop action smoothly. for importing into the game engine,

[![](https://blenderartists.org/uploads/default/original/4X/9/3/9/939134ec4a7b6361d50f932080890b79353ab9d2.jpeg "ghost ik (Presimulation frame)") ](https://www.youtube.com/watch?v=KN22ldGuFN8)

![QQ图片20230523150022](https://blenderartists.org/uploads/default/original/4X/8/a/8/8a8fb0f6f941b4dcedc79c25d097c283f90c6239.gif)

[![](https://blenderartists.org/uploads/default/original/4X/1/7/3/17379abae2903e24bece3d66d520f534eaf068d8.jpeg "ghost ik make cat run animation") ](https://www.youtube.com/watch?v=cUxA4TeltWk)

[IMDJS\_ghost\_ik(2023-7-1 bl3.51).zip](https://blenderartists.org/uploads/short-url/hwG7DMz4Q2bkDwunbJXoZMpdjiF.zip) (1.9 MB)  
[cat\_ghost\_ik\_2ik(example).zip](https://blenderartists.org/uploads/short-url/e8Rk7L7TqsKNe3aS605RDglxwvk.zip) (1.2 MB)  
[辫子(ghost ik physical bone test.zip](https://blenderartists.org/uploads/short-url/dET2zRlMr3aCGH6XmyPQX6fgbOk.zip) (680.2 KB)

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