Understanding Output Primitives

What are the basic output primitives in computer graphics?

• Circles, Rectangles, Ellipses

• Vertices, Edges, Surfaces

• Textures, Colors, Shaders

• Points, Lines, Polygons

Explain the purpose of line-drawing algorithms.

• The purpose of line-drawing algorithms is to efficiently render straight lines on raster displays by determining which pixels to illuminate.

• To enhance the color depth of images on displays.

• To create complex shapes by combining multiple lines.

• To convert vector graphics into bitmap images.

What is a frame buffer and its role in graphics rendering?

• A frame buffer is a memory area that stores pixel data for rendering images in graphics.

• A frame buffer is a type of graphics card.

• A frame buffer is a display device that shows images.

• A frame buffer is used for audio processing.

Describe the line function in the context of output primitives.

• The line function creates curves between points in computer graphics.

• The line function generates straight lines between specified points in computer graphics.

• The line function generates 3D models from 2D images.

• The line function is used to fill shapes with color in graphics.

What algorithms are commonly used for circle generation?

• Bresenham's Circle Algorithm, Midpoint Circle Algorithm, Trigonometric Circle Algorithm

• Linear Circle Algorithm

• DDA Circle Algorithm

• Random Point Circle Algorithm

How do ellipse-generating algorithms differ from circle-generating algorithms?

• Ellipse-generating algorithms handle varying axes and require more complex calculations, while circle-generating algorithms use a constant radius for simpler calculations.

• Circle-generating algorithms can handle varying radii and complex shapes.

• Ellipse-generating algorithms are simpler and faster than circle-generating algorithms.

• Ellipse-generating algorithms only create perfect circles.

List and explain the attributes of lines in graphics.

• speed, direction, frequency, amplitude

• The attributes of lines in graphics include color, width, style, opacity, cap, join, dash array, and start and end points.

• shape, volume, mass, temperature

• length, texture, pattern, brightness

What are curve attributes and why are they important?

• Curve attributes are irrelevant to data analysis.

• Curve attributes are characteristics that define the shape and behavior of a curve, and they are important for analysis and application in various fields.

• Curve attributes are solely mathematical constants.

• Curve attributes are only relevant in graphic design.

How does color and grayscale levels affect output primitives?

• Grayscale levels only affect color saturation.

• Color has no impact on visual clarity.

• Color enhances visual clarity and interest, while grayscale levels affect contrast and detail perception.

• Output primitives are unaffected by color or grayscale.

What are area-fill attributes and how are they used in graphics?

• Area-fill attributes are only applicable to 3D graphics and not 2D graphics.

• Area-fill attributes determine the position of shapes in a graphic layout.

• Area-fill attributes are used to define the size of shapes in graphics.

• Area-fill attributes define the color, gradient, or pattern used to fill shapes in graphics.