Macro_Animated_Constrain.md

Macro Animated Constrain

{{Macro |Name=Animated Constrain |Icon=Macro_Animated_Constrain.png |Description=Simple macro to animate angles constraints in the sketcher. |Author=psicofil |Version=1.0 |Date=2015-05-20 |FCVersion=All |Download=[https://www.freecadweb.org/wiki/images/a/af/Macro_Animated_Constrain.png ToolBar Icon]
Not file for testing [https://www.youtube.com/watch?v=kmqDcomLnk0 See the animation on YouTube.] }}

Description

Simple macro to animate angles constraints in the sketcher. Based on the work of @microelly. Animate a constraint and review the resulting effects.

Script

The macro you can find in the following github repository: Macro_Animated_Constrain.FCMacro

ToolBar Icon

AnimatedConstrain.FCMacro

{{MacroCode|code=

-- coding: utf-8 --

Mesh with GMSH inside of FreeCAD

Author: Gomez Lucio

License: LGPL v 2.1

Date: 17/05/2015

import FreeCAD from PySide import QtGui,QtCore import math import time

class AnimConstrain(QtGui.QWidget): def init(self): super(AnimConstrain, self).init() self.initUI() def initUI(self): # Window self.setWindowFlags(QtCore.Qt.WindowStaysOnTopHint) self.setWindowTitle("Animated Constrain") self.resize(240, 240) # Content self.l_initial = QtGui.QLabel(" Initital (deg)",self) self.le_initial = QtGui.QLineEdit(self) self.le_initial.setText("0") self.l_final = QtGui.QLabel(" Final (deg)",self) self.le_final = QtGui.QLineEdit(self) self.le_final.setText("360") self.l_interval = QtGui.QLabel(" Interval (deg/step) ",self) self.le_interval = QtGui.QLineEdit(self) self.le_interval.setText("5") # Constrain Type self.l_type_constrain = QtGui.QLabel("Type of Constrain :",self) self.rb_angle = QtGui.QRadioButton(" Angle(deg)",self) self.rb_angle.setChecked(QtCore.Qt.Checked) self.rb_length = QtGui.QRadioButton(" Length(mm)",self) self.rb_length.setEnabled(False) # Parameters self.l_parameters = QtGui.QLabel("Parameters :",self) self.cb_repeat = QtGui.QCheckBox(" Repeat",self) self.bt_start = QtGui.QPushButton("Start",self) self.bt_stop = QtGui.QPushButton("Stop",self) # LAYOUT layout = QtGui.QGridLayout() layout.addWidget(self.l_type_constrain, 0, 0) layout.addWidget(self.rb_angle, 1, 0) layout.addWidget(self.rb_length, 1, 1) layout.addWidget(self.l_parameters, 2, 0) layout.addWidget(self.l_initial, 3, 0) layout.addWidget(self.le_initial, 3, 1) layout.addWidget(self.l_final, 4, 0) layout.addWidget(self.le_final, 4, 1) layout.addWidget(self.l_interval, 5, 0) layout.addWidget(self.le_interval, 5, 1) layout.addWidget(self.cb_repeat, 6, 0) layout.addWidget(self.bt_start, 7, 0) layout.addWidget(self.bt_stop, 7, 1) self.setLayout(layout) self.show() # CONNECTS QtCore.QObject.connect(self.bt_start, QtCore.SIGNAL("pressed()"),self.start) QtCore.QObject.connect(self.bt_stop, QtCore.SIGNAL("pressed()"),self.stop) self.cb_repeat.stateChanged.connect(self.repeat_state) self.repeat = True

def repeat_state(self, state):   
    if state == QtCore.Qt.Checked:
        self.repeat = False
    else:
        self.repeat = True
    
def start(self):
    App.Console.PrintMessage('Start ')
    self.timer = QtCore.QTimer()
    QtCore.QObject.connect(self.timer, QtCore.SIGNAL("timeout()"), self.proceed)
    self.timer.start(50)
    self.an = float(eval(self.le_initial.text()))
    self.interv = float(eval(self.le_interval.text()))
    self.final = float(eval(self.le_final.text()))
    #self.proceed()
    
def proceed(self):
    if self.an >= self.final and self.repeat:
  self.stop()
else:
      try:
         self.an = self.an + self.interv if self.an < (360.0) else 0.0
         angle = self.an
         App.Console.PrintMessage(str(angle)+"  ")
         App.ActiveDocument.Sketch.setDatum(cs,App.Units.Quantity((str(angle)+' deg')))
         App.ActiveDocument.recompute()
      except:
     App.Console.PrintError('Error on setDatum in constrain  ')
     self.stop()

def stop(self):
    self.timer.stop()
    App.Console.PrintMessage(" End")
    App.ActiveDocument.recompute()

RUN WIDGET

try: s = Gui.Selection.getSelectionEx() cs=s[0].SubElementNames[0] cs=int(cs[10:])-1 AnimConstrain() except: App.Console.PrintError('Select one anlge constrain First ')

}}

Link

The page discussion Macro Animated Constrain

See the animation on YouTube.

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