def saveData(self, ship, trim, drafts):
""" Write data file.
@param ship Selected ship instance
@param trim Trim in degrees.
@param drafts List of drafts to be performed.
@return True if error happens.
"""
# Open the file
filename = self.path + 'hydrostatics.dat'
try:
Output = open(filename, "w")
except IOError:
msg = Translator.translate("Can't write '" + filename + "' file.\n")
FreeCAD.Console.PrintError(msg)
return True
# Print header
Output.write(header)
Output.write(" #\n")
Output.write(" # File automatically exported by FreeCAD-Ship\n")
Output.write(" # This file contains transversal areas data, filled with following columns:\n")
Output.write(" # 1: Ship displacement [ton]\n")
Output.write(" # 2: Draft [m]\n")
Output.write(" # 3: Wetted surface [m2]\n")
Output.write(" # 4: 1cm triming ship moment [ton m]\n")
Output.write(" # 5: Bouyance center x coordinate\n")
Output.write(" # 6: Floating area\n")
Output.write(" # 7: KBt\n")
Output.write(" # 8: BMt\n")
Output.write(" # 9: Cb (block coefficient)\n")
Output.write(" # 10: Cf (Floating coefficient)\n")
Output.write(" # 11: Cm (Main frame coefficient)\n")
Output.write(" #\n")
Output.write(" #################################################################\n")
# Get external faces
faces = self.externalFaces(ship.Shape)
if len(faces) == 0:
msg = Translator.translate("Can't detect external faces from ship object.\n")
FreeCAD.Console.PrintError(msg)
else:
faces = Part.makeShell(faces)
# Print data
FreeCAD.Console.PrintMessage("Computing hydrostatics...\n")
for i in range(0,len(drafts)):
FreeCAD.Console.PrintMessage("\t%d / %d\n" % (i+1, len(drafts)))
draft = drafts[i]
point = Tools.Point(ship,faces,draft,trim)
string = "%f %f %f %f %f %f %f %f %f %f %f\n" % (point.disp, point.draft, point.wet, point.mom, point.xcb, point.farea, point.KBt, point.BMt, point.Cb, point.Cf, point.Cm)
Output.write(string)
# Close file
Output.close()
self.dataFile = filename
msg = Translator.translate("Data saved at '" + self.dataFile + "'.\n")
FreeCAD.Console.PrintMessage(msg)
return False
def __init__(self, obj, faces):
""" Creates a new ship on active document.
@param faces Ship faces (Part::Shape entities).
"""
# Add uniqueness property to identify Ship instances
obj.addProperty("App::PropertyBool","IsShip","Ship", str(Translator.translate("True if is a valid ship instance"))).IsShip=True
# Add main dimensions
obj.addProperty("App::PropertyLength","Length","Ship", str(Translator.translate("Ship length (Lpp) [m]"))).Length=0.0
obj.addProperty("App::PropertyLength","Beam","Ship", str(Translator.translate("Ship beam (B) [m]"))).Beam=0.0
obj.addProperty("App::PropertyLength","Draft","Ship", str(Translator.translate("Ship draft (T) [m]"))).Draft=0.0
# Add shapes
obj.Shape = Part.makeShell(faces)
obj.Proxy = self
self.obj = obj
def __init__(self, obj, faces):
""" Creates a new ship on active document.
@param faces Ship faces (Part::Shape entities).
"""
# Add uniqueness property to identify Ship instances
obj.addProperty(
"App::PropertyBool", "IsShip", "Ship",
str(Translator.translate(
"True if is a valid ship instance"))).IsShip = True
# Add main dimensions
obj.addProperty(
"App::PropertyLength", "Length", "Ship",
str(Translator.translate("Ship length (Lpp) [m]"))).Length = 0.0
obj.addProperty(
"App::PropertyLength", "Beam", "Ship",
str(Translator.translate("Ship beam (B) [m]"))).Beam = 0.0
obj.addProperty(
"App::PropertyLength", "Draft", "Ship",
str(Translator.translate("Ship draft (T) [m]"))).Draft = 0.0
# Add shapes
obj.Shape = Part.makeShell(faces)
obj.Proxy = self
self.obj = obj
def execute(self, obj):
''' Print a short message when doing a recomputation, this method is mandatory '''
# FreeCAD.Console.PrintMessage("Recompute Ship\n")
obj.Shape = Part.makeShell(self.faces)
def onChanged(self, fp, prop):
''' Print the name of the property that has changed '''
# FreeCAD.Console.PrintMessage("Change property: " + str(prop) + "\n")
if prop == "Length" or prop == "Beam" or prop == "Draft":
fp.Shape = Part.makeShell(self.faces)
def execute(self, obj):
''' Print a short message when doing a recomputation, this method is mandatory '''
# FreeCAD.Console.PrintMessage("Recompute Ship\n")
obj.Shape = Part.makeShell(obj.Shape.Faces)
def saveData(self, ship, trim, drafts):
""" Write data file.
@param ship Selected ship instance
@param trim Trim in degrees.
@param drafts List of drafts to be performed.
@return True if error happens.
"""
# Open the file
filename = self.path + 'hydrostatics.dat'
try:
Output = open(filename, "w")
except IOError:
msg = Translator.translate("Can't write '" + filename +
"' file.\n")
FreeCAD.Console.PrintError(msg)
return True
# Print header
Output.write(header)
Output.write(" #\n")
Output.write(" # File automatically exported by FreeCAD-Ship\n")
Output.write(
" # This file contains transversal areas data, filled with following columns:\n"
)
Output.write(" # 1: Ship displacement [ton]\n")
Output.write(" # 2: Draft [m]\n")
Output.write(" # 3: Wetted surface [m2]\n")
Output.write(" # 4: 1cm triming ship moment [ton m]\n")
Output.write(" # 5: Bouyance center x coordinate\n")
Output.write(" # 6: Floating area\n")
Output.write(" # 7: KBt\n")
Output.write(" # 8: BMt\n")
Output.write(" # 9: Cb (block coefficient)\n")
Output.write(" # 10: Cf (Floating coefficient)\n")
Output.write(" # 11: Cm (Main frame coefficient)\n")
Output.write(" #\n")
Output.write(
" #################################################################\n"
)
# Get external faces
faces = self.externalFaces(ship.Shape)
if len(faces) == 0:
msg = Translator.translate(
"Can't detect external faces from ship object.\n")
FreeCAD.Console.PrintError(msg)
else:
faces = Part.makeShell(faces)
# Print data
FreeCAD.Console.PrintMessage("Computing hydrostatics...\n")
for i in range(0, len(drafts)):
FreeCAD.Console.PrintMessage("\t%d / %d\n" % (i + 1, len(drafts)))
draft = drafts[i]
point = Tools.Point(ship, faces, draft, trim)
string = "%f %f %f %f %f %f %f %f %f %f %f\n" % (
point.disp, point.draft, point.wet, point.mom, point.xcb,
point.farea, point.KBt, point.BMt, point.Cb, point.Cf,
point.Cm)
Output.write(string)
# Close file
Output.close()
self.dataFile = filename
msg = Translator.translate("Data saved at '" + self.dataFile + "'.\n")
FreeCAD.Console.PrintMessage(msg)
return False
