Difference between point and line clipping in computer graphics
Answers
Clipping:Remove points outside a region of interest.
Discard (parts of) primitives outside our window...Point clipping:Remove points outside window.A point is either entirely inside the region or not.Line clipping:Remove portion of line segment outside window.
Line segments can straddle the region boundary.Liang-Barsky algorithm efficiently clips line segments to a halfspace.Halfspaces can be combined to bound a convex region.Use outcodes to better organize combinations of halfspaces.Can use some of the ideas in Liang-Barsky to clip points
Answer:
The answer to the given question is explained in the explanation.
Explanation:
Remove points outside of a region of interest via clipping.
Remove points that are outside the window by clipping them. Either a point is totally inside the area or it is not. Line clipping: Cut off the section of the line that is outside the window.
Line segments may cross the region's dividing line.
Line segments are effectively clipped to a halfspace by the Liang-Barsky technique.
A convex region can be confined using a combination of halfspaces.
To better organize halfspace combinations, use outcodes.
Can utilize some of Liang-concepts Barsky's to clip points Line clipping: Cut off the section of the line that is outside the window.
Line segments may cross the boundaries of a region.
• Line segments are effectively clipped against a halfspace by the Liang-Barsky algorithm.
• A convex region can be confined by combining halfspaces.
• To structure a mixture of halfspaces, use outcodes.
• Can use some of Liang-theories Barsky's to clip spots.
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