added recursive velocity setting to objects

PySALESetup/objects.py

@@ -221,19 +221,24 @@ def material_colors(self) -> Dict[int, str]:
             self.set_material_colormap('viridis')
         return self._material_colors
 
-    def set_velocity(self, x: float, y: float) -> None:
+    def set_velocity(self, x: float, y: float,
+                     include_children: bool = True) -> None:
         """Set the velocity of the object.
 
         Parameters
         ----------
         x : float
         y : float
+        include_children : bool
+            Set velocity of all children as well? defaults to True.
 
         Returns
         -------
         None
         """
         self._velocity = Velocity(x=x, y=y)
+        for child in self.children:
+            child.set_velocity(x, y)
 
     def set_as_void(self) -> None:
         """Set the material to void.

README.md

@@ -1,6 +1,6 @@
 # PySALESetup
 
-PySALESetup is a preprocessing tool designed for use with [iSALE2D](www.iSALE-code.de).
+PySALESetup is a preprocessing tool designed for use with [iSALE2D](https://www.iSALE-code.de).
 It is a python module that allows for the setup of complex geometries in 2D simulations.
 This is of particular use in granular mesoscale numerical simulations and example 
 scripts are also included. read the documentation [here](https://jgd10.github.io/PySALESetup/).