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modified the script to add color information ot the imported point cl… #15

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modified the script to add color information ot the imported point cl… #15

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20 changes: 17 additions & 3 deletions __init___.py
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,8 @@ def execute(self, context):
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])

colors = (np.vstack((all_points['red'], all_points['green'], all_points['blue'])).T)/65536

# Prepare LiDAR info
lidar_info = {
Expand All @@ -73,11 +75,11 @@ def execute(self, context):
}

# Import LAS points as a mesh
self.import_points_as_mesh(context, points, lidar_info)
self.import_points_as_mesh(context, points, colors, lidar_info)

return {'FINISHED'}

def import_points_as_mesh(self, context, points, lidar_info):
def import_points_as_mesh(self, context, points, colors, lidar_info):
# Create a new mesh object
mesh = bpy.data.meshes.new("LAS Data")
obj = bpy.data.objects.new("LAS Data", mesh)
Expand All @@ -99,7 +101,19 @@ def import_points_as_mesh(self, context, points, lidar_info):
obj['lidar_point_count_by_return'] = get_attribute(lidar_info['header'], 'point_count_by_return')

# Create mesh vertices from points
mesh.from_pydata(points, [], [])
num_vertices = len(points)
faces = [(i, i, i) for i in range(num_vertices)]

mesh.from_pydata(points, [], faces)
mesh.update() # Update mesh data


vertex_colors = mesh.vertex_colors.new(name="Col") if "Col" not in mesh.vertex_colors else mesh.vertex_colors["Col"]

# Assign colors through loops
for loop in mesh.loops:
loop_color = colors[loop.vertex_index]
vertex_colors.data[loop.index].color = (*loop_color, 1.0) # Ensure RGBA (A=1.0)

# 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)]
Expand Down