Hi Alexandre
This seems to be a bug caused by some floating point error or some mis
handling of the coordinates.
In 3D the intersects function just wrapps ST_3DDistance and checks if it
returns 0.
So when trying with the same geometries with ST_3DDistance instead it
returns 3.638977870632214e-12
I will take a look at it.
Could you please file a ticket?
ATB
Nicklas Avén
On 11/12/20 2:46 AM, Alexandre Neto wrote:
Hi,
I am having a strange issue with st_3dintersects. I have two
linestring that share the same end vertex. Nevertheless, using
ST_3dintersects returns false.
SELECT ST_3dintersects(st_geometryfromtext('LINESTRING Z
(-27922.1593 -110233.7616 147.2259,-27928.084 -110230.8462
147.3629,-27930.6374 -110229.9248 147.3629,-27931.6207 -110229.587
147.3094,-27932.3841 -110229.275 147.3676,-27933.1861 -110228.9467
147.4365,-27937.0309 -110227.3638 147.7729,-27937.7892 -110227.0474
147.8412,-27938.6259 -110226.6885 147.9075,-27939.4617 -110226.3287
147.9663,-27943.6905 -110224.5169 148.2353,-27944.5442 -110224.1538
148.2687,-27945.6634 -110223.6871 148.2849,-27946.7835 -110223.2224
148.2982,-27952.3498 -110220.9011 148.3594,-27953.4568 -110220.4353
148.3756,-27966.8502 -110214.6482 148.7361,-27969.516 -110213.4996
148.7961,-27972.1805 -110212.3494 148.8566,-27974.1264 -110211.5032
148.9768,-27975.4229 -110210.9441 149.0093)'),
st_geometryfromtext('LINESTRING Z (-28001.1829 -110201.8973
149.4396,-28000.3665 -110199.7073 149.3765,-27995.4183 -110201.8041
149.3354,-27975.4229 -110210.9441 149.0093)'))
Any idea what could be happening in here?
Thanks,
Alexandre Neto
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