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Improve performance #14

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Improve performance #14

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36 changes: 12 additions & 24 deletions __init___.py
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Original file line number Diff line number Diff line change
Expand Up @@ -34,8 +34,7 @@
def get_attribute(header, attr_name, default="N/A"):
if hasattr(header, attr_name):
return str(getattr(header, attr_name))
else:
return default
return default

class IMPORT_OT_las_data(Operator, ImportHelper):
bl_idname = "import_scene.las_data"
Expand All @@ -59,18 +58,16 @@ def execute(self, context):
# Get LAS points
num_points_to_read = infile.header.point_count
all_points = infile.read_points(n=num_points_to_read)
points = np.array([(point['X'] * infile.header.x_scale + infile.header.x_offset,
point['Y'] * infile.header.y_scale + infile.header.y_offset,
point['Z'] * infile.header.z_scale + infile.header.z_offset)
for point in all_points])

# Prepare LiDAR info
lidar_info = {
'filepath': self.filepath,
'point_format': infile.header.point_format,
'point_count': num_points_to_read,
'header': infile.header
}

# Prepare LiDAR info
lidar_info = {
'filepath': self.filepath,
'point_format': infile.header.point_format,
'point_count': num_points_to_read,
'header': infile.header
}
points = np.array(all_points.array)
points = points[['X', 'Y', 'Z']]

# Import LAS points as a mesh
self.import_points_as_mesh(context, points, lidar_info)
Expand Down Expand Up @@ -100,16 +97,7 @@ def import_points_as_mesh(self, context, points, lidar_info):

# Create mesh vertices from points
mesh.from_pydata(points, [], [])

# Set mesh object's origin to the center of its bounding box and location to (0, 0, 0)
min_coords = [min(points, key=lambda coord: coord[i])[i] for i in range(3)]
max_coords = [max(points, key=lambda coord: coord[i])[i] for i in range(3)]
center = Vector([(min_coords[i] + max_coords[i]) / 2 for i in range(3)])

for vertex in mesh.vertices:
vertex.co -= center

obj.location = Vector((0, 0, 0))
obj.scale = Vector(obj['lidar_scale'])

# Update mesh
mesh.update()
Expand Down