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Animation and Kinematics Concepts

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Questions and Answers

What is the primary purpose of using a trivariate Bezier interpolating function in free-form deformations (FFDs)?

To define the parallelepiped formed by the S, T, U axes
To determine the initial positions of control points
To facilitate the modification of the global coordinate system
To calculate the deformed position of a point based on its local coordinates (correct)

How are deformations specified in free-form deformations (FFDs)?

By changing the local coordinates of the points being deformed
By redefining the parallelepiped formed by the S, T, U axes
By moving the control points from their initial positions (correct)
By modifying the Bezier interpolating function

What is the purpose of creating a grid of control points in free-form deformations (FFDs)?

To calculate the trivariate Bezier interpolating function
To control the deformation of the object by moving the control points (correct)
To define the initial shape of the object being deformed
To facilitate the modification of the local coordinate system

What is the significance of the S, T, U axes in free-form deformations (FFDs)?

They define the local coordinate system for the deformation (B) Signup and view all the answers

What is the purpose of determining the trilinear interpolants of a point P in the local coordinate system?

To calculate the deformed position of the point using the Bezier interpolating function (A) Signup and view all the answers

Which of the following statements is true about compositing FFDs?

Compositing FFDs allows for sequential or hierarchical deformations (D) Signup and view all the answers

What is the primary purpose of animation in computer graphics?

To add the dimension of time and movement to graphics (A) Signup and view all the answers

Which of the following is NOT an example of animation mentioned in the text?

A 3D model of a car (C) Signup and view all the answers

What is the primary requirement for animating something in computer graphics?

To be able to control the movement and changes of the object over time (A) Signup and view all the answers

What does the text imply about the process of animating an object?

It involves giving the illusion of movement to something that cannot move itself (C) Signup and view all the answers