They are concave polygons and convex polygons. In a concave polygon at least one angle should be greater than 180.

What are the two types of polygons used in Weiler Atherton clipping algorithm?

They are concave polygons and convex polygons. In a concave polygon at least one angle should be greater than 180.

How does Weiler polygon clipping method works?

Weiler Atherton Polygon Clipping Algorithm is an algorithm made to allow clipping of even concave algorithms to be possible. Unlike Sutherland – Hodgman polygon clipping algorithm, this algorithm is able to clip concave polygons without leaving any residue behind.

Which algorithm is used for polygon clipping?

Sutherland–Hodgman algorithm
The Sutherland–Hodgman algorithm is an algorithm used for clipping polygons. It works by extending each line of the convex clip polygon in turn and selecting only vertices from the subject polygon that are on the visible side.

How many polygons are used in Sutherland Hodgman clipping method?

Two polygons
Cohen- Sutherland is line clipping algorithm. 2. How many polygons are used in this method? Explanation: Two polygons are used in this algorithm namely clip polygon and subject polygon.

In which polygon clipping algorithm we are making use of two lists one is for clipping polygon and other is for clipped polygon?

When the clipped polygons have two or more separate sections, then it is the concave polygon handled by this algorithm.

What do you mean by polygon clipping?

Polygon clipping is an important operation that computers execute all the time. An algorithm that clips a polygon is rather complex. Each edge of the polygon must be tested against each edge of the clipping window, usually a rectangle.

What is the use of Z buffer algorithm?

A depth buffer, also known as a z-buffer, is a type of data buffer used in computer graphics to represent depth information of objects in 3D space from a particular perspective. Depth buffers are an aid to rendering a scene to ensure that the correct polygons properly occlude other polygons.

How does Cohen Sutherland algorithm work?

The Cohen–Sutherland algorithm is a computer-graphics algorithm used for line clipping. The algorithm divides a two-dimensional space into 9 regions and then efficiently determines the lines and portions of lines that are visible in the central region of interest (the viewport).

How Cohen Sutherland algorithm works difference between Cohen Sutherland and Sutherland-Hodgeman?

Cohen Sutherland and Sutherland Hodgman clipping algorithm: The ‘Cohen – Sutherland’ algorithm is a method used for ‘line clipping’ computer graphics. The Polygon Clipping algorithm from Sutherland-Hodgeman is operated by handling the polygon boundary opposite to each window corner or side.

What is polygon clipping in computer graphics?

Polygon clipping is a process in which we only consider the part which is inside the view pane or window. We will remove or clip the part that is outside the window.

What is polygon filling in computer graphics?

Polygon Filling  Filling a Polygon is the process of coloring every pixel that comes inside the Polygon region.

What is Atherton polygon clipping algorithm?

Weiler Atherton Polygon Clipping Algorithm is an algorithm made to allow clipping of even concave algorithms to be possible. Unlike Sutherland – Hodgman polygon clipping algorithm, this algorithm is able to clip concave polygons without leaving any residue behind.

What is the clip polygon algorithm?

A powerful but somewhat more complex clipping algorithm developed by weiler and Atherton meets this requirement. This algorithm defines the Polygon to be clipped as a subject Polygon and the clipping region is the clip Polygon.

What are the different types of clipping algorithms?

1. Computer Graphics Clipping • Sutherland-Hodgman Algorithm (Area Clipping or Polygon Clipping) • Weiler-Atherton Polygon Clipping (Solution of Sutherland-Hodgman Algorithm ) • Cohen Sutherland Algorithm (Line Clipping)

What is 1414 Weiler Atherton clip?

14. 14 Weiler-Atherton Polygon Clipping This algorithm was developed clip a fill area that is either a convex polygon or a concave polygon. The basic idea of this algorithm is that instead of proceeding around the polygon edges as vertices are processed, we will follow the window boundaries.