Exploring Computer Graphics Concepts

What are input primitives in computer graphics?

• Input primitives are advanced rendering techniques.

• Input primitives refer to the color models used in graphics.

• Input primitives are the algorithms for image compression.

• Input primitives are the basic user interactions like mouse movements, keyboard inputs, and touch gestures in computer graphics.

Define output primitives and give examples.

• circles and ellipses

• Examples of output primitives include points, lines, and polygons.

• shapes and colors

• textures and gradients

What is the purpose of 2D transformations in graphics?

• To increase the resolution of graphics.

• To create 3D effects in 2D graphics.

• The purpose of 2D transformations in graphics is to manipulate the position, size, and orientation of objects.

• To enhance the color depth of images.

Explain the difference between translation and scaling in 2D transformations.

• Translation alters the color; scaling adjusts the position.

• Translation rotates an object; scaling flips it.

• Translation changes an object's size; scaling moves it.

• Translation moves an object; scaling changes its size.

What is the role of clipping in computer graphics?

• The role of clipping in computer graphics is to limit the rendering of objects to a specific area, enhancing performance and efficiency.

• Clipping is a technique for adding textures to 3D models.

• Clipping is used to enhance color depth in graphics.

• Clipping increases the resolution of rendered images.

Describe the process of viewing in 3D graphics.

• Using only wireframe models without textures

• Lighting adjustments and shading techniques

• The process of viewing in 3D graphics includes modeling, texturing, camera setup, projection, rendering, and display.

• Creating 2D sprites for animation

What are the common types of clipping algorithms?

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

• Bresenham's Line Algorithm

• Midpoint Circle Algorithm

• Scanline Polygon Fill Algorithm

What is the significance of the viewport in 2D graphics?

• The viewport sets the resolution of the graphics rendering.

• The viewport is significant as it defines the visible area of the graphics, controlling what is rendered on the screen.

• The viewport determines the color palette used in graphics.

• The viewport is responsible for the texture quality of the graphics.

What are the basic output primitives used in rendering?

• Circles, ellipses, curves

• Colors, gradients, patterns

• Points, lines, polygons

• Textures, shadows, reflections

How do you perform a rotation transformation in 2D?

• Apply a translation transformation: (x', y') = (x + tx, y + ty).

• Reflect the point across the x-axis: (x', y') = (x, -y).

• Use the scaling matrix: (x', y') = (kx * x, ky * y).

• Use the rotation matrix: (x', y') = (x * cos(θ) - y * sin(θ), x * sin(θ) + y * cos(θ)).