What is polygon clipping in graphics?

polygon clipping Removal of part of an object outside a polygon (see clipping). Efficient algorithms exist that pipeline the sequence of edges that define the polygon to the set of planes to be clipped against. Clipping a polygon can result in several disjoint polygons.

What is Weiler Atherton polygon clipping explain with example?

The Weiler–Atherton is a polygon-clipping algorithm. It is used in areas like computer graphics and games development where clipping of polygons is needed. It allows clipping of a subject or candidate polygon by an arbitrarily shaped clipping polygon/area/region. It is generally applicable only in 2D.

Which clipping 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.

What is difference between line clipping and polygon clipping?

the polygon clipper clips against 4 edges in succession, whereas the line clipper tests the outcode to see which edge is Crossed, and clips only when necessary.

Why is a polygon clipping needed?

A set of connected lines are considered as polygon; polygons are clipped based on the window and the portion which is inside the window is kept as it is and the outside portions are clipped. The polygon clipping is required to deal different cases. Usually it clips the four edges in the boundary of the clip rectangle.

Is it possible to clip a polygon using clipping operations?

A polygon can be clipped using clipping operations. Explanation: A polygon can also be clipped by specifying the clipping window. Explanation: In polygon clipping, first the polygon is clipped against the left edge of the polygon window to get new vertices of the polygon. So, it is the top left which is clipped first.

What are the two types of polygons used in Weiler Atherton 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.

How is text clipping carried out?

Text Clipping is a process of clipping the string. In this process, we clip the whole character or only some part of it depending upon the requirement of the application. In this method, if the whole string is inside the clip window then we consider it. Otherwise, the string is completely removed.

Which is not type of clipping?

2) viewport clipping. 7. Which of the following is NOT a type of clipping algorithm used on the raster system? Explanation: Since clipping is done in 2 dimensional viewing and solid is a 3 dimensional object so clipping algorithm can’t be applied on a solid object.