fix: model scripts silently relying on ambient np/mkgrid imports

RVC3/models/IBVS-arm-main.py

@@ -7,7 +7,9 @@
 """
 
 from pathlib import Path
+import numpy as np
 from machinevisiontoolbox import *
+from machinevisiontoolbox.base import mkgrid
 from roboticstoolbox import *
 from math import pi
 

RVC3/models/IBVS-holonomic-main.py

@@ -7,6 +7,7 @@
 """
 
 from pathlib import Path
+import numpy as np
 from machinevisiontoolbox import *
 from roboticstoolbox import *
 

RVC3/models/IBVS-main.py

@@ -1,5 +1,7 @@
 from pathlib import Path
+import numpy as np
 from machinevisiontoolbox import *
+from machinevisiontoolbox.base import mkgrid
 from bdsim import Clock, bdload, BDSim
 from spatialmath import SE3
 import matplotlib.pyplot as plt

RVC3/models/IBVS-nonholonomic-main.py

@@ -7,6 +7,7 @@
 """
 
 from pathlib import Path
+import numpy as np
 from machinevisiontoolbox import *
 from roboticstoolbox import *
 

RVC3/models/IBVS-partitioned-main.py

@@ -1,7 +1,9 @@
 #! /usr/bin/env python
 
 from pathlib import Path
+import numpy as np
 from machinevisiontoolbox import *
+from machinevisiontoolbox.base import mkgrid
 from bdsim import Clock, bdload, BDSim
 from spatialmath import SE3, Polygon2
 from spatialmath.base import angdiff

RVC3/models/IBVS-quadrotor-main.py

@@ -8,7 +8,9 @@
 
 from pathlib import Path
 from enum import IntEnum
+import numpy as np
 from machinevisiontoolbox import *
+from machinevisiontoolbox.base import mkgrid
 from bdsim import Clock, bdload, BDSim
 from spatialmath import SE3
 import matplotlib.pyplot as plt