Graphics - PAct3

What is the purpose of projection in computer graphics?

• To convert a 2D image to a 3D representation

• To convert a 3D scene into a 2D image

• To create shadows in a 3D environment

• To apply textures to 3D models

In perspective projection, what happens to the size of objects as they move further away from the viewer?

• They become larger

• They become smaller

• They remain the same size

• Their color changes

Which type of projection is commonly used for technical drawings and engineering designs?

• Orthographic projection

• Perspective projection

• Isometric projection

• Oblique projection

What does a vanishing point represent in perspective projection?

• The point where all lines converge

• The farthest point in the scene

• The nearest point to the viewer

• The center of the projection plane

Which of the following projection types maintains parallel lines?

• Perspective projection

• Orthographic projection

• Isometric projection

• Oblique projection

In perspective projection, what does the frustum represent?

• The volume of space captured by the projection

• The focal length of the camera

• The near clipping plane

• The far clipping plane

Which projection type is suitable for creating a realistic sense of depth and distance?

• Orthographic projection

• Isometric projection

• Perspective projection

• Oblique projection

What is the main difference between parallel projection and perspective projection?

• Parallel projection preserves relative object sizes, while perspective projection does not.

• Perspective projection preserves parallel lines, while parallel projection does not.

• Parallel projection is only used for 2D objects, while perspective projection is used for 3D objects.

• Perspective projection preserves relative object sizes, while parallel projection does not.

Which projection type is commonly used for creating 2D representations of 3D objects without foreshortening?

• Isometric projection

• Orthographic projection

• Perspective projection

• Oblique projection

In computer graphics, the "camera" is used for:

• Capturing images of the real world

• Defining the view and projection transformations

• Generating 3D models

• Enhancing rendering performance