Matakuliah
: UO646
Tahun
: 2009
/ DKV III
Basic Konstruksi,Artikulasi & kesimbangan 01
Pertemuan 03
Inverse Kinematik (IK)
&
Forward Kinematik (FK)
Animation part 1
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Bina Nusantara
Hierarchies and Kinematics
…….” The term kinematics describes the movement or animation of the chain. There are two
types of kinematics:
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•
With forward kinematics (FK) , you transform a parent object to move its descendants (its
children, their children, etc.).
With inverse kinematics (IK), you transform a child object to move its ancestors (its parent
and so on up the chain). You can also use IK to make an object “stick” to the ground or
another surface, while allowing the chain to rotate off the pivot of that object.
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Forward Kinematics (FK)
The default method of manipulating a hierarchy uses a technique called
“forward kinematics”. The basic principles employed by this technique are:
•
•
•
Hierarchical linking from parent to child
Placement of pivot points to define the connecting joint between linked
objects
Inheritance of position, rotation, and scale transforms from parent to child
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Forward Kinematics (FK)
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Inverse Kinematics (IK)
……” Inverse kinematics (IK) is a positioning and animation method that is built on top of
the concepts of hierarchical linking. To understand how IK works you must first
understand the principles of hierarchical linking and forward kinematics.
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•
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Inverse kinematics starts with linking and pivot placement as its foundation and then
adds the following principles:
Joints are constrained with specific positional and rotational properties.
Position and orientation of parent objects is determined by the position and
orientation of child objects.
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Inverse Kinematics (IK)
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Rigging System
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..” How to practice your animation with tools”
• Find your “ best rig “ ever founded
• Explore the tools
• Trust your insting
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Free Rigging character
http://www.11secondclub.com/resources/
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Basic Controller
• Facial Rig
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Basic Controller
• ik / fk CONTROLLER
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Sample Free Rig
• Ideal for lower body movement
• easy controling
• good for body language
• Fast in viewport (low res)
• good for Facial Expretion
• Ideal for acting with Voice over
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Basic Walk Cycle
Animation part 2
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Basic normal walk pattern
•“ Contact position “…..
Suatu pose dimana telapak kaki menyentuh ground dan kaki terlihat
lurus
•…..” Pose ini biasanya dijadikan sebagai acuan dasar character berjalan “
•…..” Pose awal dan akhir memiliki kesamaan dasar agar terjadi pergerakan loop “
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Basic normal walk pattern
•“ Passing position “…..
Suatu pose dimana terjadi aksi perpindahan kaki saat melangkah
•…..” Pose ini bisa memberikan perbedaan gesture character saat berjalan (ciri khas) “
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