62 lines
1.4 KiB
Python
62 lines
1.4 KiB
Python
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# Write out a gltf test file from python code
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# Unit cube - Triangle list
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# Intentionally specify invalid vert count (2)
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#
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# Uses pygltflib 1.16.2
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# py -m pip install pygltflib
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#
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import numpy as np
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import pygltflib
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# Change extension to .gltf for text based
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outputFileName = "cubeInvalidVertCount.glb"
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points = np.array(
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[
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[-0.5, -0.5, 0.5],
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[0.5, -0.5, 0.5],
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],
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dtype="float32",
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)
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points_binary_blob = points.tobytes()
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gltf = pygltflib.GLTF2(
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scene=0,
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scenes=[pygltflib.Scene(nodes=[0])],
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nodes=[pygltflib.Node(mesh=0)],
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meshes=[
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pygltflib.Mesh(
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primitives=[
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pygltflib.Primitive(
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attributes=pygltflib.Attributes(POSITION=0),
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mode=4 #"TRIANGLES"
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)
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]
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)
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],
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accessors=[
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pygltflib.Accessor(
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bufferView=0,
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componentType=pygltflib.FLOAT,
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count=len(points),
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type=pygltflib.VEC3,
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max=points.max(axis=0).tolist(),
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min=points.min(axis=0).tolist(),
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),
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],
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bufferViews=[
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pygltflib.BufferView(
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buffer=0,
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byteLength=len(points_binary_blob),
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target=pygltflib.ARRAY_BUFFER,
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),
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],
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buffers=[
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pygltflib.Buffer(
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byteLength=len(points_binary_blob)
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)
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],
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)
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gltf.set_binary_blob(points_binary_blob)
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gltf.save(outputFileName)
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