Basic Principles Flashcards
8 Figure
Particular type of arc with the shape of an 8.
Arcs
Usual path of a structure with joints.
Balance
Balance is when the sum of forces and momentums of all the parts of the body are canceled.
Biomecanics
Interdisciplinary area of knowledge that studies the kinematic and mechanical phenomena of the living beings as a complex systems composed by tissues, solids and mechanical bodies. That’s why biomechanics is interested in movement, balance, physics, the resistance, injury mechanisms that may occur in the human body as a result of various physical actions.
Body Angles
Angles formed by the line of the pelvis with shoulders.
Body Dynamics
Part of physiology that studies the activity of biological phenomena.
Breaking joints
Bending a joint in the opposite direction to its normal rotation, which create the illusion that this position looks broken. It is used to create the illusion of flexibility and make it look like a piece of flexible rubber.
Cycle
Repetition of any periodic phenomenon, in which, after a certain time, the state of the system or any of their magnitudes return to a previous configuration. In animation, generally, that term refers to walking or running cycles.
Drag
Or Wave Principle, occurs as a result of friction or resistance, such as air or water, or because different parts of a character are receiving different amounts of inertia.
Follow through
When a character changes direction and parts of his body continue in the direction it was previously.
Force
Any agent able of modifying the amount of movement or shape of the materials.
Fulcrum
Supporting point.
Mass
Measurement of the amount of matter that a body have.
Overlap
When the different parts of a body continue the movement once the character stopped.
Overlapping action
The action of offsetting a mouvement to avoid that everything arrives at the same time. This allows us to simulate flexibility and avoid that the movement seems rigid.
Path of action
Path through which passes the center of a moving object.
Physic Laws
Theoretical principle deducted from facts, applicable to a set of phenomena and can be stated as a particular phenomenon that always occurs if certain conditions occur.
Power center
Imaginary point that seems to be the energy source of a character that influences his posture, gestures and actions.
Slow in
Deceleration. Slowing in to the pose.
Slow out
Acceleration. Slowing out of the pose.
Squash and stretch
That means compression (Squash) and stretching (Strech) of an animated object without changing its apparent volume.
Successive Breaking Joints
Overlap principle applied to a chain of bones (for example, as the arm) to give flexibility to a movement.
Weight
A measure of the gravitational force acting on an object. The weight equals the force exerted by a body on a support, caused by the action of the local gravitational field on the body mass.
Weight shift
Weight change from a fulcrum to another.
