Game design

Explain the concept of 3D transformation and provide an example.

• 3D transformation is the process of changing the position, rotation, and scale of an object in a 3D space. For example, rotating a cube in 3D space to create different perspectives.

• 3D transformation is the process of converting 2D images into 3D images. For example, turning a flat image of a circle into a 3D sphere.

• 3D transformation is the process of creating 3D models using computer software. For example, designing a 3D car model using a computer program.

• 3D transformation is the process of changing the color and texture of an object in a 3D space. For example, changing the color of a 3D model from red to blue.

What is a quaternion and how is it used in 3D graphics?

• A type of fruit used as a texture in 3D graphics

• A type of camera used to capture 3D images

• A programming language used to create 3D models

• A mathematical concept used to represent rotations in 3D space and to avoid gimbal lock in 3D graphics.

Discuss the role of a camera in 3D graphics and its relationship with projection.

• The relationship with projection involves the process of projecting the 2D scene onto a 3D plane

• The camera in 3D graphics has no role in defining the viewpoint and perspective of the scene

• The camera in 3D graphics defines the viewpoint and perspective of the scene, and its relationship with projection involves the process of projecting the 3D scene onto a 2D plane.

• The camera in 3D graphics only captures images and has no impact on the perspective of the scene

Explain the concept of clipping in computer graphics and its significance.

• Clipping is the process of adding objects to the view window

• Clipping only removes objects that are partially outside the view window

• Clipping is not significant in computer graphics

• Clipping in computer graphics is the process of removing the objects or parts of objects that are outside the view window or viewport. It is significant because it helps in improving the efficiency of rendering by only displaying the objects that are visible within the view window.

How do human interface devices contribute to 3D graphics and virtual reality?

• They are only used for 2D graphics and have no relevance to 3D graphics and virtual reality

• They slow down the rendering of 3D graphics and virtual reality

• They have no impact on 3D graphics and virtual reality

• They allow users to interact with 3D graphics and virtual reality environments.

What are the different types of 3D transformations and their applications?

• Twisting, bending, warping

• Expansion, compression, flipping

• Translation, rotation, scaling, and shearing

• Reflection, skewing, mirroring

Discuss the advantages of using quaternions over other methods for 3D rotation.

• Quaternions are less accurate for 3D rotation

• Quaternions are not compatible with most 3D graphics software

• Quaternions are more complex and difficult to understand

• Quaternions provide a compact representation of 3D rotations and avoid gimbal lock.

Explain the process of perspective projection in 3D graphics.

• Adjusting the brightness and contrast of the 3D scene

• Converting 2D points into 3D points

• Transforming 3D points into 2D points on the screen, taking into account the effect of perspective

• Applying texture mapping to 3D objects

What are the common techniques used for clipping in computer graphics?

• Midpoint circle algorithm

• Bresenham

• Cohen-Sutherland, Liang-Barsky, Sutherland-Hodgman

• Floyd-Steinberg

How do human interface devices enhance user interaction in virtual reality environments?

• By allowing users to interact more intuitively and immersively

• By causing discomfort and disorientation for the user

• By limiting the user's ability to interact with the virtual reality environment

• By making the virtual reality environment more confusing for the user