Podcast
Questions and Answers
What happens if the first input vertex is outside and the second vertex is inside in the Sutherland-Hodgeman Algorithm?
What happens if the first input vertex is outside and the second vertex is inside in the Sutherland-Hodgeman Algorithm?
In the Sutherland-Hodgeman Algorithm, what is done when both input vertices are inside?
In the Sutherland-Hodgeman Algorithm, what is done when both input vertices are inside?
What does the Sutherland-Hodgeman Algorithm do when the first vertex is inside and the second vertex is outside?
What does the Sutherland-Hodgeman Algorithm do when the first vertex is inside and the second vertex is outside?
When both input vertices are outside in the Sutherland-Hodgeman Algorithm, what happens?
When both input vertices are outside in the Sutherland-Hodgeman Algorithm, what happens?
Signup and view all the answers
Which issue is highlighted regarding concave polygons in the Sutherland-Hodgeman Algorithm?
Which issue is highlighted regarding concave polygons in the Sutherland-Hodgeman Algorithm?
Signup and view all the answers
What is the primary reason why line clipping cannot be directly applied to polygon fill area clipping?
What is the primary reason why line clipping cannot be directly applied to polygon fill area clipping?
Signup and view all the answers
What does the Sutherland-Hodgeman algorithm do when processing polygon line segments?
What does the Sutherland-Hodgeman algorithm do when processing polygon line segments?
Signup and view all the answers
Which case arises in the Sutherland-Hodgeman algorithm when the first edge endpoint is outside and the second endpoint is inside?
Which case arises in the Sutherland-Hodgeman algorithm when the first edge endpoint is outside and the second endpoint is inside?
Signup and view all the answers
Why is it necessary to create a new vertex list at each clipping boundary in polygon fill area clipping?
Why is it necessary to create a new vertex list at each clipping boundary in polygon fill area clipping?
Signup and view all the answers
What happens when both endpoints of a polygon line segment are inside a clipping area according to Sutherland-Hodgeman algorithm?
What happens when both endpoints of a polygon line segment are inside a clipping area according to Sutherland-Hodgeman algorithm?
Signup and view all the answers
What is the main difference between line clipping and polygon fill area clipping in terms of handling multiple vertices?
What is the main difference between line clipping and polygon fill area clipping in terms of handling multiple vertices?
Signup and view all the answers
Study Notes
Sutherland-Hodgeman Algorithm
- If the first input vertex is outside and the second vertex is inside, the algorithm computes the intersection point and adds it to the output list.
Clipping Cases
- If both input vertices are inside, the entire line segment is included in the output list.
- If the first vertex is inside and the second vertex is outside, the algorithm computes the intersection point and adds it to the output list.
- If both input vertices are outside, the entire line segment is discarded.
Concave Polygons
- The Sutherland-Hodgeman Algorithm struggles with concave polygons, which can lead to incorrect clipping results.
Line Clipping vs. Polygon Fill Area Clipping
- Line clipping cannot be directly applied to polygon fill area clipping because the latter requires processing multiple vertices.
Polygon Fill Area Clipping
- When processing polygon line segments, the algorithm adds new vertices at each clipping boundary to the output list.
- If the first edge endpoint is outside and the second endpoint is inside, the algorithm computes the intersection point and adds it to the output list.
- When both endpoints of a polygon line segment are inside a clipping area, the entire line segment is included in the output list.
- The main difference between line clipping and polygon fill area clipping is that the latter requires handling multiple vertices.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore polygon clipping algorithms like Sutherland-Hodgeman and Weiler-Atherton. Learn about how to clip polygon fill areas by creating new shapes during the process of each clipping-window edge. Understand the process of determining the new vertex list at each clipping boundary.
