Update to platform to have an option to not rotate attached objects

- Added an optional input to update_moorings or not, which, when platform.setPosition is run, will not also rotate the positions of moorings and anchors
- Also updated layout_helpers adjustSS4Pretension function to better work with Project Moorings rather than project.ms. subsystems

Author: shousner

famodel/design/layout_helpers.py

@@ -11,7 +11,7 @@
 from famodel.mooring.mooring import Mooring
 from famodel.seabed.seabed_tools import getDepthFromBathymetry
 from famodel.project import Project
-from fadesign.fadsolvers import dsolve2
+from famodel.design.fadsolvers import dsolve2
 
 
 def create_initial_layout(lease_xs, lease_ys, ms, grid_x, grid_y, grid_depth, update_ms=True, display=0):
@@ -818,7 +818,7 @@ def eval_func(X, args):
     return ms
 
 
-def adjustSS4Pretension(ssin, i_line=0, T_init=None, horizontal=False, display=0, tol=0.01):
+def adjustSS4Pretension(ssin, i_line=0, T_init=None, horizontal=False, display=0, stepfac=10, tol=0.01):
 
     ss = deepcopy(ssin)
 
@@ -855,15 +855,16 @@ def eval_func(X, args):
     L_final, T_final, _ = dsolve2(eval_func, X0, Ytarget=[T_init], 
                                   Xmin=[1], Xmax=[1.1*np.linalg.norm(ss.rB-ss.rA)],
                                   dX_last=[1], tol=[tol], 
-                                  maxIter=200, stepfac=100, display=display)
+                                  maxIter=200, stepfac=stepfac, display=display)
 
-    ss.lineList[i_line].setL(L_final[0])  # assign the solved_for length
+    #ss.lineList[i_line].setL(L_final[0])  # assign the solved_for length
     if display > 0: print(f'    L_init = {L_init:6.1f}, LF = {L_final[0]:6.1f}')
     if display > 0: print(f'    T_init = {T_init:8.2e}, TF = {T_final[0]:8.2e}')
 
-    ss.staticSolve()    # reset the subsystem
+    #ss.staticSolve()    # reset the subsystem
 
     return L_final[0]
+    #return ss
 
 
 

famodel/platform/platform.py

@@ -63,7 +63,7 @@ def __init__(self, id, r=[0,0,0], heading=0, mooring_headings=[60,180,300],rFair
         self.raftResults = {}
 
 
-    def setPosition(self, r, heading=None, degrees=False,project=None):
+    def setPosition(self, r, heading=None, degrees=False,project=None, update_moorings=True):
         '''
         Set the position/orientation of the platform as well as the associated
         anchor points. 
@@ -93,27 +93,28 @@ def setPosition(self, r, heading=None, degrees=False,project=None):
 
         # Update the position of any Moorings
         count = 0 # mooring counter (there are some attachments that aren't moorings)
-        for i, att in enumerate(self.attachments):
-            if isinstance(self.attachments[att]['obj'], Mooring): 
-        
-                # Heading of the mooring line
-                heading_i = self.mooring_headings[count] + self.phi
-                # Reposition the whole Mooring if it is an anchored line
-                if not self.attachments[att]['obj'].shared:
-                    self.attachments[att]['obj'].reposition(r_center=self.r, heading=heading_i,project=project)
-                
-                count += 1
-                
-            if isinstance(self.attachments[att]['obj'], Cable):
-                
-                cab = self.attachments[att]['obj']
-                
-                # update heading stored in subcomponent for attached end
-                # pf_phis = [cab.attached_to[0].phi, cab.attached_to[1].phi]
-                # headings = [cab.subcomponents[0].headingA + pf_phis[0], cab.subcomponents[-1].headingB + pf_phis[1]]
-                
-                # reposition the cable
-                cab.reposition(project=project)
+        if update_moorings:
+            for i, att in enumerate(self.attachments):
+                if isinstance(self.attachments[att]['obj'], Mooring): 
+            
+                    # Heading of the mooring line
+                    heading_i = self.mooring_headings[count] + self.phi
+                    # Reposition the whole Mooring if it is an anchored line
+                    if not self.attachments[att]['obj'].shared:
+                        self.attachments[att]['obj'].reposition(r_center=self.r, heading=heading_i,project=project)
+                    
+                    count += 1
+                    
+                if isinstance(self.attachments[att]['obj'], Cable):
+                    
+                    cab = self.attachments[att]['obj']
+                    
+                    # update heading stored in subcomponent for attached end
+                    # pf_phis = [cab.attached_to[0].phi, cab.attached_to[1].phi]
+                    # headings = [cab.subcomponents[0].headingA + pf_phis[0], cab.subcomponents[-1].headingB + pf_phis[1]]
+                    
+                    # reposition the cable
+                    cab.reposition(project=project)
 
 
     def mooringSystem(self,rotateBool=0,mList=None,bodyInfo=None, project=None):