topic Re: Potential DXF import bug in ArcGIS CityEngine Questions

Potential DXF import bug

TalAisenberg1 — Thu, 19 Jul 2018 07:36:26 GMT

Hi,

I suspect this is a CE bug but here goes - I got a really weird behavior while importing DXF data,

The DXF is all georeferenced - when imported, some of the objects in the DXF come nicely in place. However, others, from the very same DSF, come totally in the wrong place and in close inspection they are located in a mirrored location to the original on the DXF - essentially seems like their X value got a negative value.

I tried several things such as:

- saving other DXF file versions

- saving from Autocad / Civil

- changing the objects' layer

- isolating the objects in a separate file

- exploding into standalone lines

But they keep on coming mirrored in the wrong place

File attached,

I'm using CE 2017.0 (should really upgrade to 2018 soon)

Cheers

Tal

p.s. I've uploaded the DWG as, for some onscure reason, the page tells me that the 3.2mb DXF file is 'too big' ?!?!? - just save as DXF

Re: Potential DXF import bug

TalAisenberg1 — Thu, 09 Aug 2018 09:55:55 GMT

Does anyone from ESRI / CE has any feedback on this ?

Thanks

Tal

Re: Potential DXF import bug

ThomasFuchs — Fri, 10 Dec 2021 20:41:33 GMT

Thank you for reporting this issue. The CE team will look into it.

As a workaround please use this Python script to mirror the imported shape coordinates:

from scripting import *

# get a CityEngine instance
ce = CE()

# axisIndex: [0,1,2] = [x,y,z]
def mirrorShape(shapes,axisIndex):
    for i in xrange(0,len(shapes)):
        vertices = ce.getVertices(shapes[i])
        for j in xrange(axisIndex,len(vertices),3):
            vertices[j] *= -1
        ce.setVertices(shapes[i], vertices)
        
        if (i%100==0) | (i==len(shapes)-1):
            status = r"progress %3.1f%%" % ((i+1) * 100. / len(shapes))
            print(status)

if __name__ == '__main__':
    shapes = ce.getObjectsFrom(ce.selection(),ce.isShape)
    mirrorShape(shapes,0)
    pass‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍