openlayers / ol2

OpenLayers v2 - deprecated!
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OpenLayers incorrectly interpreting WFS request when polygon contains repeating vertex #1503

Open LewisCorker opened 8 years ago

LewisCorker commented 8 years ago

Using OpenLayers 2.12-rc4.

When there is a vertex which appears three times in a polygon (start, middle and end), it is not correctly interpreted. The images attached demonstrate the error.

polygon as displayed on website polygon as drawn

The GeoJSON response for these polygons is below and the coordinates 112995.56511964,902719.41912787 (highlighted in Bold) appear 3 times:

{"type":"MultiPolygon","coordinates":[[[[112995.56511964,902719.41912787],[112990.6097,902709.6342],[113001.1737,902704.1776],[113006.20810001,902713.9242],[112995.56511964,902719.41912787],[112996.72243237,902721.24872458],[113006.21452666,902736.25478471],[113010.8244713,902743.5426502],[113016.97232828,902753.26180265],[113017.90000001,902754.9],[113018.077271,902755.11203003],[113018.49156502,902755.60755816],[113026.09859907,902746.92355823],[113029.59002225,902747.67743884],[113030.26226825,902747.8225926],[113032.9539471,902738.82166377],[113017.76025242,902703.34903783],[113015.06205657,902692.93274686],[113014.93634842,902691.58138427],[113014.56006664,902687.53635515],[113015.34186343,902684.90141043],[113017.40605549,902677.94431866],[113017.94849864,902676.11608432],[113007.38708243,902647.91089043],[113001.23,902649.27],[113000,902649.51],[112995.24,902650.51],[112964.6748177,902662.12311512],[112966.06997281,902665.35987499],[112969.38097326,902673.04139601],[112974.90286245,902685.02640552],[112978.16579697,902691.67777204],[112979.50903411,902693.8323774],[112984.97926351,902702.60684123],[112989.193,902709.034],[112995.56511964,902719.41912787]]],[[[112973.67,902920.55],[112980.5,902917.4],[112982.71,902917.67],[113000,902906.12],[113030.12,902886.47],[113052.02,902873.16000002],[113063.75,902865.68000001],[113067.53,902863.58],[113067.08,902859.98000001],[113054.03,902842.31],[113039.71,902823.95000001],[113037.13,902821.45000001],[113033.16,902817.61000001],[113032.38,902816.89],[113030.57,902815.22],[113027.92303866,902812.77330219],[113026.13092266,902814.52963044],[113010.9802,902829.3778],[113010.68089492,902829.32813947],[112971.32236834,902822.79779649],[112970.8,902827.5],[112969.2,902840.10000002],[112965.7,902862.30000001],[112964.48,902871.69],[112963.7,902872],[112961.8,902872.9],[112961.3,902873.50000001],[112961,902874.2],[112960.8,902874.9],[112960.7,902875.60000001],[112960.8,902877.1],[112961,902878.3],[112960.7,902879.4],[112959.9,902880.00000001],[112959.1,902880.50000001],[112957.7,902881.60000001],[112956.5,902882.8],[112955,902883.70000001],[112954.1,902883.8],[112953.1,902883.9],[112951.3,902884.60000002],[112950.3,902885.4],[112949.5,902886.30000001],[112948.9,902887.40000001],[112948.5,902888.70000001],[112948.2,902889.9],[112948.2,902891.1],[112948.3,902892.4],[112948.6,902894.10000001],[112949.1,902895.9],[112949.6,902898.8],[112949.5,902900.2],[112949.2,902901.60000002],[112948.28,902906.54],[112947.6,902911.7],[112947.9,902913.50000001],[112949.6,902919.1],[112949.1,902921.8],[112947.7,902924.6],[112947.6,902927.2],[112946.30000001,902932.3],[112943.7,902937.8],[112941.6,902941.20000001],[112940.9,902944.59000001],[112945,902944.5],[112954.6,902934.9],[112955.29000001,902934.3],[112960.55,902930.37],[112964.14,902927.96000001],[112969.21,902924.74],[112971.97,902922.27000001],[112972.85,902921.43000001],[112973.67,902920.55]]]]