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non zero winding number in hindi in computer graphics:
I have already made a video in English:    • non zero winding rule in computer graphics...  
In this video we will learn about non zero winding rule in computer graphics.
In non-zero winding number method we need to know the direction of each edge in the polygon, i.e. whether the edge is clockwise or counter-clockwise.
The winding number is number of times the polygon edges wind around a particular point in the counterclockwise direction.
HOW to apply??
1. To apply non zero winding number rule, first we keep the initial value of winding number=0.
2. Then we imagine drawing a line from point P to outside the polygon which does not pass through any vertex.
3. Now We add 1 to the winding number every time we intersect a polygon edge that crosses the line from right to left, and we subtract 1 every time we intersect an edge that crosses from left to right.
NON ZERO WINDING NUMBER
The interior points are that have a non-zero value for the winding number.
Exterior points are those whose value of the winding number is zero.
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