Quadreped anatomy guide for riggers by sumida

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4leg walk,4leg run,Quadreped walk,Quadreped run,movements,muscle,rigging

Transcript of Quadreped anatomy guide for riggers by sumida

  • 1. dnimexworkshops 2010SKELETONS for ANIMATORS and RIGGERSstuarts. sumidadepartment of biologycaliforniastate university san bernardinossumida@csusb.eduwww.stuartsumida.com

2. Note: This file contains a portion of the workshop information presented for Animex2010. Materials not in the public domain, or any proprietary images cannot be included in this posted version. -Stuart Sumida 3. dnimexworkshops 2010SKELETONS for ANIMATORS and RIGGERSioverviewii case study (Schell Games and Disney Feature Animation) iii particularly troublesome joints 4. dnimexworkshops 2010SKELETONS for ANIMATORS and RIGGERSioverviewii case study (Schell Games and Disney Feature Animation) iii particularly troublesome joints 5. Any resource where good animators are referencing the skeleton. 6. Approximate position of jaw jointApproximate position for cheek elevation and pivot 7. Placement of the Limbs Relative to Body WallPectoral girdle is SUPERFICIAL to the body wall.Pectoral limb attaches to dorsal aspect of body wall.Pelvic Girdle temporarily INTERRUPTS the body wall.Pelvic limb attaches to lateral aspect of body wall 8. dnimexworkshops 2010SKELETONS for ANIMATORS and RIGGERSioverviewii case study (Schell Games and Disney Feature Animation) iii particularly troublesome joints 9. Major Concerns:CarnivoresSmall to Medium HerbivoresLarge Herbivores (Giraffes, Elephants, and others)Shoulders are (always) a Pain 10. Note position and height of scapula compared with canid. 11. 1 2734 85 96Major Joints: 1. Atlas-axis flex&extend/rotation respectively. 2 Scapula pendular. 3 Shoulder (glenoid) ball and socket. 4. Elbow flex/extend; forearm rotation. 5. Wrist flex/extend saddle joint. 6. Phalangealflex/extend. 7. Acetabulumball and socket. 8. Knee ball and plate joint. 9. Ankle flex /extend. 12. WristHeelElbowKnee 13. Canine 14. Felid 15. Major Concerns:CarnivoresSmall to Medium HerbivoresLarge Herbivores (Giraffes, Elephants, and others)Shoulders are (always) a Pain 16. MOVEMENTS OF THE HUMAN SCAPULA(More on this in part iii.) 17. FelidShoulders are Always a Pain 18. Major Concerns:CarnivoresSmall to Medium HerbivoresLarge Herbivores (Giraffes, Elephants, and others)Shoulders are (always) a Pain 19. dnimexworkshops 2010SKELETONS for ANIMATORS and RIGGERSioverviewii case study (Schell Games and Disney Feature Animation) iii particularly troublesome joints 20. Support of the Skull on the Vertebral Column: Your art teacher told you the skull is like a sphere balanced on a column constructed of four curves. (Well, sort of) Articulation of skull with backbone is the fulcrum. Overall weight of skull, including slightly larger frontal and face regions causes head to tilt slightly forward of fulcrum. Posterior neck muscles provide balancing forces (as do some others). 21. Most of the necks elements (cervical vertebrae) act in an additive manner (Region 2). However, the two superior- most elements, the ATLAS and AXIS vertebraerespectively (Region 1), are highly specializedproviding movementsthat are extremely characteristic of mammals in general and humans in particular. 22. Note the difference in representation of potential movements of the first two elements and their integration with the skull. 23. ARTICULAR SURFACES OF THE ATLAS-AXIS COMPLEX: Flexion and Extension take place at the joint between the skull and the atlas vertebra. Rotatorymovement takes place at the atlas-axis joint. Combining these movements into one functionally rigged joint presents the danger of the organism acting like a bobble-head doll. 24. MOVEMENTS OF THE SKULL-ATLAS-AXIS COMPLEX: AXIAL ROTATION: About vertical axis QOFLEXION/EXTENSIONAbout transverse axis passing through OLATERAL FLEXIONAbout an antero- posterior axis PO. 25. Note position of scapula on dorsal (back) side of ribcage. 26. Note position of scapulaon dorsal (back) side of ribcage. The clavicle (collar bone)is on the ventral (front) side of the ribcage. 27. MOVEMENTS OF THE HUMAN SCAPULA 28. The movements of the scapula (shoulder blade) and humerus(upper arm bone) are necessarily linked. For example: When the arm is abducted and elevated, the scapula must rotate laterally. Failure to show this can make the upper body look extremely stiff and artificial. 29. When the arm is abducted and elevated, the scapula must rotate laterally. 30. Muscular Structures Acting on the Shoulder Girdle:1.Trapezius2.Rhomboids3.Levatorscapulae4.Serratusanterior5.Pectoralisminor6.Pectoral major and Subclavius 31. The knee is not a simple hinge joint:In order for the knee to flex maximally, the femur (thigh bone) must slide fore and aft on the lower supporting tibia (shin bone).The knee is more properly considered a ball and plate joint.A small amount of rotation can occur at the knee when the knee is maximally flexed (bent). 32. In order for the knee to flex maximally, the femur (thigh bone) must slide fore and aft on the lower supporting tibia (shin bone). The knee is more properly considered a ball and plate joint. The femur slides back on tibialplateau as the knee joint flexes.