| 1. 10,10 to 30,10 -crosses left so compute new point
15,10 compare 15,10 to 30,10 against all other edges, ok so output 15,10; 30,10 2. 30,10 to 30,40 inside all edges so output 30,40 3. 30,40 to 20,60 crosses top so compute intersection 25,50 4. 20,60 to 10,40 outside so reject but to close have point at 15,50 Then have output set of points (feed these points into polyscan) 15,10 30,10 30,10 25,50 15,50 15,10 |
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