Flipping all mesh normals in the positive direction #3309
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Could you please advise on how to flip the normals of a mesh using your Python library? In my case, the mesh represents an open surface, such as terrain: I need the normals to be oriented in the following way: Thank you in advance for your reply and time. |
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Replies: 1 comment 2 replies
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Hello! We have import meshlib.mrmeshpy as mr
mesh = mr.loadMesh(path_to_mesh))
# check if it is needed to flip
avgNorm = mr.Vector3f()
for v in mesh.topology.getValidVerts():
avgNorm = avgNorm mesh.normal(v)
avgNorm = avgNorm / mesh.topology.getValidVerts().count()
if ( mr.dot( avgNorm, mr.Vector3f(0,0,1) ) < 0 ): # assume that you want your normals to look in positive Z direction
mesh.topology.flipOrientation() # flip all normals |
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Thank you ! I couldn't find full documentation for your python library. Can you send it to me or is it still in progress ? |
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Actually we try to keep our python module synchronized with c library, so c documentation should match python documentation in most cases, please have a look at this page: https://doc.meshinspector.com/PythonCodeExamples.html Also please note that you can find a lot of useful comments like this: import meshlib.mrmeshpy as mr
help( mr ) # or you can call help on individual functions or classes |
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Hello!
We have
flipOrientationfunction to do it: