IK de 3 pontos fixos - 3 fixed points IK

[contato]

Olá amigos , estou com uma duvida sobre como montar o IK de um trator

A pá carregadora irá comandar os demais elementos, porém ela tem 3 pontos de fixação no elemento central conforme imagem em anexo.

Alguem pode me ajudar? 

Grato

[samab · Accepted solution]

Eu não falo Português, você terá que usar o Google Translate, como eu fiz.

You will want two IK chains for this.

The main IK chain will only need to be simple going through just the two pivots, the one where the arm joins the tractor, and the one joining the arm to the bucket.

The second one is for the tipping mechanism. It will start at the pivot joining the bucket and the red piece, through the pivot joining the red and blue pieces and end on the grey central pivot joining the blue piece to the main arm.

The hydraulic pistons will be rigged to follow the movement of adjoining parts using Look At constraints, they don't need to be part of the IK rig.