Python Region Bug

[aaronfhd]

Hi I am using Python to set my region and then save the file.

When I Open the file the region is not in the correct spot that it showed before saving it.

If I move it manually in to position and save it, it works.

[Alexey Pasumansky]

Hello aaronfhd,

Can you provide the lines that you are using to modify the region (probably, something simple also raises the same behavior, like chunk.region.size *= 10), and how the document save operation is called afterwards?

Also please specify, if you are running the script in headless mode or via Metashape GUI.

[aaronfhd]

def placeRegion(center,size,angle):
   crs = chunk.crs
   T = chunk.transform.matrix
   center = Metashape.Vector((center[0],center[1],center[2]))
   center = T.inv().mulp(crs.unproject(center))
   m = crs.localframe(T.mulp(center)) * T
   R = m.rotation() * (1. / m.scale())
   size = Metashape.Vector((size[0],size[1],size[2])) / m.scale()  # scaling the size is required
   angle = numpy.radians(angle)
   rot = Metashape.Matrix([[numpy.cos(angle), -numpy.sin(angle), 0], [numpy.sin(angle), numpy.cos(angle), 0], [0, 0, 1]])
   rotation = R.t() * rot
   
   chunk.region.rot = rotation
   chunk.region.center = center
   chunk.region.size = size



 placeRegion(center,size,angle)
 doc.save()

[aaronfhd]

ok this seems to introduce a a bit of weird issues.

If you use the script above

Meshing takes forever and the mesh appears weird by the edge of the region.

Moving it manually does not.

[aaronfhd]

Ok  so very reproduceable using the script

and then after it seem the file is in a weird state unless you manually do the region.

Once you do that it fine.