Thus, efficient and general polygon clipping algorithms are of great importance. I am working with two polygons that dont have collinear points. The term clipping is used to describe the process of finding whether a line or polygon is intersected by another polygon. Polygon clipping in java java in general forum at coderanch. We present an algorithm for clipping a polygon or a line against a convex polygonal window. In spite of the latest graphical hardware development and. Given two polygons, a clip clipper and a subject polygon clippee, the clipped polygon consists of all points interior to the clip polygon that lie inside the subject polygon. Sutherland hodgman polygon clipping algorithm pracspedia. Thus, clipping a polygon against another polygon means determining the intersection of two polygons. A major application of clipping is to decide whether certain constructs fall within the display window. Use a transformer from the modifying geometry column continue to question 3 if no.
Pdf parallel implementation of polygon clipping using. Polygon clipping is a frequent operation in many fields, including computer graphics, cad, and gis. Merging and clipping tins eotvos lorand university. Parallel implementation of polygon clipping using transputer article pdf available in american journal of applied sciences 62 february 2009 with 210 reads how we measure reads. Hodgman evans and sutherland computer corporation a new family of clipping algorithms is described. Within the clip polygon selection group box, two options are supported. These algorithms are able to clip polygons against irregular convex planefaced volumes in three dimensions, removing the parts of the polygon which lie outside the volume. Pages in category polygon clipping algorithms the following 4 pages are in this category, out of 4 total. Do you want to clip the data to the size of the other data cookie cutter. It spendsologp time on each edge of the clipped polygon, wherep is the number of window edges, while the sutherlandhodgman algorithm spendsop time per edge. Reentrant polygon clipping communications of the acm. We should point out here that one cannot rely on the display device to achieve clipping for two reasons. When the clip mode is set to external, the graphic below depicts the resultant clip.
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