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GZ curve plotting

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This commit is contained in:
Jose Luis Cercós pita 2012-05-27 16:39:30 +02:00 committed by Yorik van Havre
parent 506d638c8e
commit 3b381f8405
4 changed files with 190 additions and 0 deletions
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1
src/Mod/Ship/CMakeLists.txt
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@ -116,6 +116,7 @@ SOURCE_GROUP("shipcreatetank" FILES ${ShipCreateTank_SRCS})
SET(ShipGZ_SRCS
tankGZ/__init__.py
tankGZ/Plot.py
tankGZ/TaskPanel.py
tankGZ/TaskPanel.ui
)

1
src/Mod/Ship/Makefile.am
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@ -77,6 +77,7 @@ nobase_data_DATA = \
tankCreateTank/TaskPanel.py \
tankCreateTank/TaskPanel.ui \
tankGZ/__init__.py \
tankGZ/Plot.py \
tankGZ/TaskPanel.py \
tankGZ/TaskPanel.ui

186
src/Mod/Ship/tankGZ/Plot.py Normal file
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@ -0,0 +1,186 @@
#***************************************************************************
#* *
#* Copyright (c) 2011, 2012 *
#* Jose Luis Cercos Pita <jlcercos@gmail.com> *
#* *
#* This program is free software; you can redistribute it and/or modify *
#* it under the terms of the GNU Lesser General Public License (LGPL) *
#* as published by the Free Software Foundation; either version 2 of *
#* the License, or (at your option) any later version. *
#* for detail see the LICENCE text file. *
#* *
#* This program is distributed in the hope that it will be useful, *
#* but WITHOUT ANY WARRANTY; without even the implied warranty of *
#* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
#* GNU Library General Public License for more details. *
#* *
#* You should have received a copy of the GNU Library General Public *
#* License along with this program; if not, write to the Free Software *
#* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
#* USA *
#* *
#***************************************************************************
import os
# FreeCAD modules
import FreeCAD,FreeCADGui
from FreeCAD import Part, Base
from FreeCAD import Image, ImageGui
# FreeCADShip modules
from shipUtils import Paths, Translator
header = """ #################################################################
##### #### ### #### ##### # # ### ####
# # # # # # # # # # # #
# ## #### #### # # # # # # # # # # #
#### # # # # # # # ##### # # ## ## ##### # ####
# # #### #### # # # # # # # # # #
# # # # # # # # # # # # # #
# # #### #### ### # # #### ##### # # ### #
#################################################################
"""
class Plot(object):
def __init__(self, x, y, disp, draft, trim):
""" Constructor. performs plot and show it (Using pyxplot).
@param x Roll angles [deg].
@param y GZ value [m].
@param disp Ship displacement [tons].
@param draft Ship draft [m].
@param trim Ship trim angle [deg].
"""
if self.createDirectory():
return
if self.saveData(x,y):
return
if self.saveLayout(x,y, disp, draft, trim):
return
if self.execute():
return
ImageGui.open(self.path + 'gz.png')
def createDirectory(self):
""" Create needed folder to write data and scripts.
@return True if error happens.
"""
self.path = FreeCAD.ConfigGet("UserAppData") + "ShipOutput/"
if not os.path.exists(self.path):
os.makedirs(self.path)
if not os.path.exists(self.path):
msg = Translator.translate("Can't create '" + self.path + "' folder.\n")
FreeCAD.Console.PrintError(msg)
return False
def saveData(self,x,y):
""" Write data file.
@param x Roll angles.
@param y GZ value.
@return True if error happens.
"""
# Open the file
filename = self.path + 'gz.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 GZ stability parameter, filled with following columns:\n")
Output.write(" # 1: Roll angles [deg]\n")
Output.write(" # 2: GZ [m]\n")
Output.write(" #\n")
Output.write(" #################################################################\n")
# Print data
if len(x) < 2:
msg = Translator.translate("Not enough data to plot.\n")
FreeCAD.Console.PrintError(msg)
return True
for i in range(0, len(x)):
string = "%f %f\n" % (x[i], y[i])
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 saveLayout(self, x, y, disp, draft, trim):
""" Prints the data output.
@param x Roll angles.
@param y GZ value.
@param disp Ship displacement.
@param draft Ship draft.
@param trim Ship trim angle.
@return True if error happens.
"""
filename = self.path + 'gz.pyxplot'
# Open the file
try:
Output = open(filename, "w")
except IOError:
msg = Translator.translate("Can't write '" + filename + "' file.\n")
FreeCAD.Console.PrintError(msg)
return True
# Write header
Output.write(header)
Output.write(" #\n")
Output.write(" # File automatically exported by FreeCAD-Ship\n")
Output.write(" # This file contains a script to plot transversal GZ stability parameter.\n")
Output.write(" # To use it execute:\n")
Output.write(" #\n")
Output.write(" # pyxplot %s\n" % (filename))
Output.write(" #\n")
Output.write(" #################################################################\n")
# Write general options for hydrostatics
Output.write("set numeric display latex\n")
Output.write("set output '%s'\n" % (self.path + 'gz.eps'))
Output.write("set nokey\n")
Output.write("set grid\n")
Output.write("# X axis\n")
Output.write("set xlabel '$roll$ / degrees'\n")
Output.write("set xtic\n")
Output.write("# Y axis\n")
Output.write("set ylabel '$GZ$ / m'\n")
Output.write("set ytic\n")
Output.write("# Line styles\n")
Output.write("set style 1 line linetype 1 linewidth 2 colour rgb (0):(0):(0)\n")
# Additional data
Output.write("# Additional data\n")
Output.write("set label (1) '$\\Delta = %g \\mathrm{tons}$' %f,%f\n" % (disp, x[0] + 0.65*(x[-1] - x[0]), min(y) + 0.95*(max(y)-min(y))))
Output.write("set label (2) '$T = %g \\mathrm{m}$' %f,%f\n" % (draft, x[0] + 0.65*(x[-1] - x[0]), min(y) + 0.85*(max(y)-min(y))))
Output.write("set label (3) '$Trim = %g^\\circ$' %f,%f\n" % (trim, x[0] + 0.65*(x[-1] - x[0]), min(y) + 0.75*(max(y)-min(y))))
# Write plot call
Output.write("# Plot\n")
Output.write("plot '%s' using 1:2 title 'GZ' axes x1y1 with lines style 1\n" % (self.dataFile))
# Close file
self.layoutFile = filename
Output.close()
return False
def execute(self):
""" Calls pyxplot in order to plot an save an image.
@return True if error happens.
"""
filename = self.path + 'gz'
comm = "pyxplot %s" % (self.layoutFile)
if os.system(comm):
msg = Translator.translate("Can't execute pyxplot. Maybe is not installed?\n")
FreeCAD.Console.PrintError(msg)
msg = Translator.translate("Plot will not generated\n")
FreeCAD.Console.PrintError(msg)
return True
comm = "gs -r300 -dEPSCrop -dTextAlphaBits=4 -sDEVICE=png16m -sOutputFile=%s.png -dBATCH -dNOPAUSE %s.eps" % (filename,filename)
if os.system(comm):
msg = Translator.translate("Can't execute ghostscript. Maybe is not installed?\n")
FreeCAD.Console.PrintError(msg)
msg = Translator.translate("Generated image will not converted to png\n")
FreeCAD.Console.PrintError(msg)
return True
return False

2
src/Mod/Ship/tankGZ/TaskPanel.py
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@ -28,6 +28,7 @@ import FreeCADGui as Gui
# Qt library
from PyQt4 import QtGui,QtCore
# Module
from Plot import *
from Instance import *
from TankInstance import *
from shipUtils import Paths, Translator
@ -56,6 +57,7 @@ class TaskPanel:
for i in range(0, nRoll):
roll.append(i*dRoll)
GZ.append(self.computeGZ(draft[0], trim, roll[-1]))
Plot(roll, GZ, disp[0]/1000.0, draft[0], trim)
return True
def reject(self):