Talk:Sutherland-Hodgman polygon clipping: Difference between revisions
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Implementations probably should be required to test if the clipper is winding clockwise or not. Some of the current code crash if the rectangle is reversed. Testing direction of a convex poly is pretty easy anyway, just checking any one vertex should be enough. --[[User:Ledrug|Ledrug]] 01:23, 7 July 2011 (UTC) |
Implementations probably should be required to test if the clipper is winding clockwise or not. Some of the current code crash if the rectangle is reversed. Testing direction of a convex poly is pretty easy anyway, just checking any one vertex should be enough. --[[User:Ledrug|Ledrug]] 01:23, 7 July 2011 (UTC) |
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== Ruby == |
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With Ruby 1.9, a block parameter must be a local variable. |
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<pre>$ ruby scratch.rb |
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scratch.rb:22: formal argument cannot be an instance variable |
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clipPolygon.each do |@cp2| # WP clipEdge is cp1,cp2 here |
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^ |
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scratch.rb:26: formal argument cannot be an instance variable |
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inputList.each do |@e| |
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^</pre> |
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[http://rosettacode.org/mw/index.php?title=Sutherland-Hodgman_polygon_clipping&diff=118024&oldid=118006 My change to the Ruby code] fixes it for Ruby 1.9 but keeps it working with Ruby 1.8. --[[User:Kernigh|Kernigh]] 19:31, 19 August 2011 (UTC) |
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