dak_type multiple horizontal incorrect

[balazsdukai]

These buildings have a single horizontal roof but they are classified as multiple horizontal

"POLYGON ((84148.75 454913.5938,84139.0234 454917.4375,84133.4922 454903.4375,84143.2188 454899.5938,84148.75 454913.5938))","NL.IMBAG.Pand.1916100000086171"
"POLYGON ((84181.1875 454916.7813,84190.7891 454913.0,84196.2969 454927.0,84186.6953 454930.7813,84181.1875 454916.7813))","NL.IMBAG.Pand.1916100000086403"
"POLYGON ((84221.2344 454989.9375,84211.5781 454993.75,84206.8203 454981.6563,84216.4531 454977.8438,84221.2344 454989.9375))","NL.IMBAG.Pand.1916100000086408"
"POLYGON ((84154.2422 454927.5,84144.5156 454931.3438,84139.0234 454917.4375,84148.75 454913.5938,84154.2422 454927.5))","NL.IMBAG.Pand.1916100000099465"
"POLYGON ((84184.4453 455004.0313,84174.7891 455007.8438,84170.0234 454995.7813,84179.6797 454991.9688,84184.4453 455004.0313))","NL.IMBAG.Pand.1916100000086411"
"POLYGON ((84216.4531 454977.8438,84206.8203 454981.6563,84201.8047 454968.9063,84211.3906 454965.0625,84216.4531 454977.8438))","NL.IMBAG.Pand.1916100000086407"
"POLYGON ((84207.4141 454955.2813,84197.8516 454959.125,84192.2578 454944.9063,84201.8516 454941.125,84207.4141 454955.2813))","NL.IMBAG.Pand.1916100000099463"
"POLYGON ((84194.1797 455028.6875,84184.5234 455032.5,84179.6328 455020.0938,84189.2891 455016.2813,84194.1797 455028.6875))","NL.IMBAG.Pand.1916100000086414"
"POLYGON ((84155.6094 454959.4063,84165.3281 454955.5938,84170.9453 454969.8125,84161.2266 454973.6563,84155.6094 454959.4063))","NL.IMBAG.Pand.1916100000086406"
"POLYGON ((84179.6797 454991.9688,84170.0234 454995.7813,84165.1172 454983.375,84174.7734 454979.5625,84179.6797 454991.9688))","NL.IMBAG.Pand.1916100000086409"
"POLYGON ((84189.2891 455016.2813,84179.6328 455020.0938,84174.7891 455007.8438,84184.4453 455004.0313,84189.2891 455016.2813))","NL.IMBAG.Pand.1916100000086413"
"POLYGON ((84175.6328 454902.6875,84185.2422 454898.9063,84190.7891 454913.0,84181.1875 454916.7813,84175.6328 454902.6875))","NL.IMBAG.Pand.1916100000086402"
"POLYGON ((84226.0469 455002.125,84216.3672 455005.9375,84211.5781 454993.75,84221.2344 454989.9375,84226.0469 455002.125))","NL.IMBAG.Pand.1916100000086410"
"POLYGON ((84186.6953 454930.7813,84196.2969 454927.0,84201.8516 454941.125,84192.2578 454944.9063,84186.6953 454930.7813))","NL.IMBAG.Pand.1916100000086404"
"POLYGON ((84159.7734 454941.5,84150.0469 454945.3438,84144.5156 454931.3438,84154.2422 454927.5,84159.7734 454941.5))","NL.IMBAG.Pand.1916100000099464"
"POLYGON ((84230.8438 455014.2188,84221.1563 455018.125,84216.3672 455005.9375,84226.0469 455002.125,84230.8438 455014.2188))","NL.IMBAG.Pand.1916100000086412"
"POLYGON ((84165.3281 454955.5938,84155.6094 454959.4063,84150.0469 454945.3438,84159.7734 454941.5,84165.3281 454955.5938))","NL.IMBAG.Pand.1916100000099462"

See https://3dbag.nl/en/viewer?rdx=84195.97510428989&rdy=454983.9875559242&ox=16.839378586417297&oy=72.38213021754015&oz=72.53595047144336&lod=lod22

These seem to have actually multiple roof parts. Maybe the current dak_type attribute is that useful, it is a very simple thing that is determined based on the detected planes before the building is even reconstructed.

[balazsdukai]

Do it in post process from the 3d mesh based on azimuth and slope. Related to #51