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Split terrain into chunks of chunk_size

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gsemaj 2023-09-09 16:40:22 -07:00
parent f6dc2d690f
commit 3bb3df7a2d
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GPG Key ID: 24B96BAA40497929
1 changed files with 29 additions and 18 deletions
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47
terrain_mesh_extractor/ExtractTerrainMeshes.py
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@ -94,30 +94,41 @@ def rip_terrain_mesh(f, outpath, clear=False):
for f in bm.faces:
f.normal_flip()
# export
# select vertex chunks and separate
verts = {}
for x in range(128):
for y in range(128):
idx = y + x * 129
v = bm.verts[idx]
verts[idx] = v
v.select = False
for f in v.link_faces:
f.select = False
chunk_size = 8
for x in range(128 // chunk_size):
for y in range(128 // chunk_size):
for i in range(x * chunk_size, x * chunk_size + chunk_size):
for j in range(y * chunk_size, y * chunk_size + chunk_size):
idx = j + i * 129
v = verts[idx]
for f in v.link_faces:
f.select = True
bpy.ops.mesh.duplicate()
bpy.ops.mesh.separate(type='SELECTED')
bpy.ops.mesh.select_all(action='DESELECT')
# delete main
bpy.ops.object.mode_set(mode="OBJECT")
bpy.ops.object.select_all(action='DESELECT')
grid.select_set(True)
bpy.ops.object.delete()
# export
bpy.ops.object.select_all(action='SELECT')
name = terrainData['m_Name']
outfile = f"{name}.obj"
bpy.ops.export_scene.obj(filepath=os.path.join(outpath, outfile))
bpy.ops.object.mode_set(mode="EDIT")
bm = bmesh.from_edit_mesh(context.edit_object.data)
bm.verts.ensure_lookup_table()
# deselect all
for v in bm.verts:
v.select = False
for l in v.link_loops:
l.face.select = False
# select modified vertices + faces
#for shift_index in indices:
# v = bm.verts[shift_index]
# v.select = True
# for l in v.link_loops:
# l.face.select = True
if(clear):
bpy.ops.object.mode_set(mode="OBJECT")
bpy.ops.object.select_all(action='SELECT')