CrashCourse Computer Science: 3D Graphics Quiz

What is the process of converting 3D coordinates onto a 2D plane called?

• 2D Conversion

• 2D Mapping

• 3D Projection

• 3D Rendering

Which type of 3D projection makes parallel lines appear parallel in the projection?

• Axonometric Projection

• Isometric Projection

• Orthographic Projection

• Perspective Projection

Why are triangles preferred over other shapes in 3D graphics?

• They use less memory

• They are faster to render

• They are easier to color

• They are simpler to define in space

What is the classic algorithm for filling polygons in 3D graphics?

• Ray Tracing

• Gouraud Shading

• Scanline Rendering

• Rasterization

What technique is used to soften the rough edges of filled polygons?

• Antialiasing

• Supersampling

• Downsampling

• Interpolation

What is the term for the rate at which a computer fills in polygons?

• Fillrate

• Render rate

• Frame rate

• Polygon rate

What is the Painter's Algorithm used for?

• Rendering textures

• Handling occlusion by sorting polygons from farthest to nearest

• Applying lighting effects

• Sorting polygons by color

What is the main advantage of Z-Buffering over the Painter's Algorithm?

• It uses less memory

• It doesn't require sorting polygons

• It is easier to implement

• It produces better colors

What is the flickering effect called when two polygons have the same distance in Z-Buffering?

• Occlusion Error

• Z-Fighting

• Polygon Clash

• Depth Conflict

What is the purpose of back-face culling in 3D graphics?

• To improve lighting

• To ignore the back-side of polygons

• To sort polygons

• To enhance textures