a1 = np.array([[0,0],[0,1],[-1,2],[3,0],[-1,-2],[0,-1],[0,0]], dtype=float)
polB = patches.Polygon(a1, closed=True, facecolor='grey')
ax.add_patch(polB)

a2 = np.array([[newX,newY+2],[newX+1,newY-1],[newX,newY],[newX-1,newY-1],[newX,newY+2]], dtype=float)
    polB = patches.Polygon(a2, closed=True, facecolor='gold')
    t2 = mpl.transforms.Affine2D().rotate_deg_around(newX,newY,heading) + newax.transData
    polB.set_transform(t2)
    newax.add_patch(polB)

newax = fig.add_axes(ax.get_position(), frameon=False)
    newax.set_xlim(-20,20)
    newax.set_ylim(-20,20)

inTrans = ax.transData.transform((x, y))
    inv = newax.transData.inverted()
    newTrans = inv.transform((inTrans[0], inTrans[1]))
    newX = newTrans[0]
    newY = newTrans[1]