refactor: Use TOL.is_close for checking if scaling is needed in Robot class (#436)

* refactor: Use TOL.is_close for checking if scaling is needed in Robot class

* not

Author: yck011522

src/compas_fab/robots/robot.py

@@ -7,6 +7,7 @@
 from compas.data import Data
 from compas.geometry import Frame
 from compas.geometry import Transformation
+from compas.tolerance import TOL
 from compas_robots import Configuration
 from compas_robots import RobotModel
 from compas_robots.model import Joint
@@ -1389,7 +1390,7 @@ def plan_cartesian_motion(self, waypoints, start_configuration=None, group=None,
         # =======
         # Scaling
         # =======
-        need_scaling = self.scale_factor != 1.0
+        need_scaling = not TOL.is_close(self.scale_factor, 1.0, rtol=1e-8)
 
         if need_scaling:
             waypoints = waypoints.scaled(1.0 / self.scale_factor)