Macro crank simul/fr: Difference between revisions

From FreeCAD Documentation
(Updating to match new version of source page)
(Created page with "===Utilisation=== Pour tester l'animation :")
Line 7: Line 7:
[[File:Crank 00.gif|left]]{{clear}}
[[File:Crank 00.gif|left]]{{clear}}


===Use===
===Utilisation===
To test the animation:
Pour tester l'animation :


Download the files and copy the code in the Python console FreeCAD.
Download the files and copy the code in the Python console FreeCAD.

Revision as of 19:25, 1 January 2015

File:Text-x-python Crank Simul

Description
Crank simulation.

Auteur: kwahoo
Auteur
kwahoo
Téléchargement
None
Liens
Version Macro
1.0
Dernière modification
None
Version(s) FreeCAD
None
Raccourci clavier
None
Voir aussi
None

Cette animation simple utilise une esquisse et le solveur afin de déterminer la position et la rotation du piston et de la bielle.


Utilisation

Pour tester l'animation :

Download the files and copy the code in the Python console FreeCAD.

1. Open the attached file

To stop animation type :

animation.stop()

The File

crank_simul.fcstd

Script

crank_simul.FCMacro

import FreeCAD as App, FreeCADGui as Gui, Part, time, sys, math, Draft, DraftGeomUtils
from PyQt4 import QtGui,QtCore

class Animation(object):
    def __init__(self):
        App.Console.PrintMessage('init')

        App.ActiveDocument.recompute()

        self.timer = QtCore.QTimer()
        QtCore.QObject.connect(self.timer, QtCore.SIGNAL("timeout()"), self.my_update)
        self.timer.start(50)

        self.an = 0.1

    def my_update(self):
        string = '{0}'.format(self.an)
        self.an = self.an + 0.01 if self.an < (2 * math.pi) else 0.0

        angle = math.degrees(self.an)
        App.ActiveDocument.Sketch.setDatum(5,App.Units.Quantity(str(angle)+' deg'))
        App.ActiveDocument.recompute()
        p1 = App.ActiveDocument.Sketch.Shape.Vertexes[0].Point
        p2 = App.ActiveDocument.Sketch.Shape.Vertexes[1].Point
        conrodangle = math.degrees(Draft.DraftVecUtils.angle(App.Vector(1,0,0),(p1-p2))) - 90
        App.ActiveDocument.getObject("Cylinder").Placement = App.Placement(p1,App.Rotation(App.Vector(1,0,0),-90))
        App.ActiveDocument.getObject("Sketch001").Placement = App.Placement(p1,App.Rotation(App.Vector(0,0,1),conrodangle))

    def stop(self):
        self.timer.stop()
         

animation = Animation()

Links

The forum discussion Inline-four engine animation

The blog freecad-tutorial.blogspot

Other languages: