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FreeCAD是一款强大的开源CAD软件#xff0c;可以与python无缝对解#xff0c;使用python来驱动三维几何的构建#xff0c;具有很高的灵活性。本文主要讨论一下录制宏的方法#xff0c;以及如何驱动特定参数
方法
打开FreeCAD软件#xff0c;点击录制宏按钮后…简介
FreeCAD是一款强大的开源CAD软件可以与python无缝对解使用python来驱动三维几何的构建具有很高的灵活性。本文主要讨论一下录制宏的方法以及如何驱动特定参数
方法
打开FreeCAD软件点击录制宏按钮后建立如下简单的三维模型 模型建好之后结束宏录制可以得到一段python代码 阅读代码不难理解何处对哪些尺寸进行了赋值。所以只需要将这些“尺寸数值”用python变量替代即可实现参数化驱动。
以下代码利用python的random库将圆柱半径、长度、矩形孔宽度和高度设置为随机数并把生成的几何保存为webGL格式
# -*- coding: utf-8 -*-# Macro Begin: /home/liwentao/.local/share/FreeCAD/Macro/myRandomCoin.FCMacro
import FreeCAD
import PartDesign
import PartDesignGui
import Sketcher
import randomR random.uniform(20, 40)
Lrandom.uniform(50, 200)
DXrandom.uniform(5, 15)
DYrandom.uniform(5, 15)### Begin command Std_Delete
if App.getDocument(Unnamed).getObject(Body) is not None:App.getDocument(Unnamed).getObject(Body).removeObjectsFromDocument()App.getDocument(Unnamed).removeObject(Body)App.getDocument(Unnamed).recompute()
### End command Std_Delete### Begin command PartDesign_Body
App.activeDocument().addObject(PartDesign::Body,Body)
App.ActiveDocument.getObject(Body).Label 实体
App.ActiveDocument.recompute()
### End command PartDesign_Body
# Gui.Selection.addSelection(Unnamed,Body)
# Gui.Selection.clearSelection()
# Gui.Selection.addSelection(Unnamed,Body,Origin.XY_Plane.)
App.getDocument(Unnamed).getObject(Body).newObject(Sketcher::SketchObject,Sketch)
App.getDocument(Unnamed).getObject(Sketch).Support (App.getDocument(Unnamed).getObject(XY_Plane),[])
App.getDocument(Unnamed).getObject(Sketch).MapMode FlatFace
App.ActiveDocument.recompute()
# Gui.Selection.clearSelection()
App.getDocument(Unnamed).getObject(Sketch).addGeometry(Part.Circle(App.Vector(0.0,0.000000,0),App.Vector(0,0,1),R),False)
App.getDocument(Unnamed).getObject(Sketch).addConstraint(Sketcher.Constraint(PointOnObject,0,3,-1))
App.ActiveDocument.recompute()
# Gui.Selection.addSelection(Unnamed,Body,Sketch.Edge1,19.808,16.0901,0)
App.getDocument(Unnamed).getObject(Sketch).addConstraint(Sketcher.Constraint(Diameter,0,R*2))
#App.getDocument(Unnamed).getObject(Sketch).setDatum(1,App.Units.Quantity(49.570000 mm))
App.ActiveDocument.recompute()
App.ActiveDocument.recompute()
# Gui.Selection.clearSelection()
# Gui.Selection.addSelection(Unnamed,Body,Sketch.Vertex1,0.954255,0,0)
# Gui.Selection.addSelection(Unnamed,Body,Sketch.V_Axis,0,-0.04614,0)
App.getDocument(Unnamed).getObject(Sketch).addConstraint(Sketcher.Constraint(PointOnObject,0,3,-2))
App.ActiveDocument.recompute()
# Gui.Selection.clearSelection()
App.ActiveDocument.recompute()
# Gui.Selection.addSelection(Unnamed,Body,Sketch.)
App.getDocument(Unnamed).recompute()
### Begin command PartDesign_Pad
App.getDocument(Unnamed).getObject(Body).newObject(PartDesign::Pad,Pad)
App.getDocument(Unnamed).getObject(Pad).Profile App.getDocument(Unnamed).getObject(Sketch)
App.getDocument(Unnamed).getObject(Pad).Length L
App.ActiveDocument.recompute()
App.getDocument(Unnamed).getObject(Pad).ReferenceAxis (App.getDocument(Unnamed).getObject(Sketch),[N_Axis])
App.getDocument(Unnamed).getObject(Sketch).Visibility False
App.ActiveDocument.recompute()
### End command PartDesign_Pad
# Gui.Selection.clearSelection()
App.getDocument(Unnamed).getObject(Pad).TaperAngle 0.000000
App.getDocument(Unnamed).getObject(Pad).UseCustomVector 0
App.getDocument(Unnamed).getObject(Pad).Direction (0, 0, 1)
App.getDocument(Unnamed).getObject(Pad).ReferenceAxis (App.getDocument(Unnamed).getObject(Sketch), [N_Axis])
App.getDocument(Unnamed).getObject(Pad).AlongSketchNormal 1
App.getDocument(Unnamed).getObject(Pad).Type 0
App.getDocument(Unnamed).getObject(Pad).UpToFace None
App.getDocument(Unnamed).getObject(Pad).Reversed 0
App.getDocument(Unnamed).getObject(Pad).Midplane 0
App.getDocument(Unnamed).getObject(Pad).Offset 0
App.getDocument(Unnamed).recompute()
App.getDocument(Unnamed).getObject(Sketch).Visibility False
# Gui.Selection.addSelection(Unnamed,Body)
# Gui.Selection.clearSelection()
# Gui.Selection.addSelection(Unnamed,Body,Origin.XY_Plane.,-18.5177,-32.2205,0)
App.getDocument(Unnamed).getObject(Body).newObject(Sketcher::SketchObject,Sketch001)
App.getDocument(Unnamed).getObject(Sketch001).Support (App.getDocument(Unnamed).getObject(XY_Plane),[])
App.getDocument(Unnamed).getObject(Sketch001).MapMode FlatFace
App.ActiveDocument.recompute()
# Gui.Selection.clearSelection()
### Begin command Sketcher_ViewSketch
### End command Sketcher_ViewSketch
### Begin command Sketcher_ViewSection
#ActiveSketch.ViewObject.TempoVis.sketchClipPlane(ActiveSketch, None, False)### End command Sketcher_ViewSection
App.getDocument(Unnamed).getObject(Sketch001).addConstraint(Sketcher.Constraint(Coincident,4,1,-1,1))
App.ActiveDocument.recompute()
# Gui.Selection.addSelection(Unnamed,Body,Sketch001.Edge4,2.50686,-10.9,0)
App.getDocument(Unnamed).getObject(Sketch001).addConstraint(Sketcher.Constraint(DistanceX,3,2,3,1,DX))
#App.getDocument(Unnamed).getObject(Sketch001).setDatum(10,App.Units.Quantity(21.870000 mm))
App.ActiveDocument.recompute()
App.ActiveDocument.recompute()
# Gui.Selection.clearSelection()
# Gui.Selection.addSelection(Unnamed,Body,Sketch001.Edge3,10.935,6.8364,0)
App.getDocument(Unnamed).getObject(Sketch001).addConstraint(Sketcher.Constraint(DistanceY,2,2,2,1,DY))
#App.getDocument(Unnamed).getObject(Sketch001).setDatum(11,App.Units.Quantity(21.800000 mm))
App.ActiveDocument.recompute()
App.ActiveDocument.recompute()
# Gui.Selection.clearSelection()
App.ActiveDocument.recompute()
# Gui.Selection.addSelection(Unnamed,Body,Sketch001.)
App.getDocument(Unnamed).recompute()
### Begin command PartDesign_Pocket
App.getDocument(Unnamed).getObject(Body).newObject(PartDesign::Pocket,Pocket)
App.getDocument(Unnamed).getObject(Pocket).Profile App.getDocument(Unnamed).getObject(Sketch001)
App.getDocument(Unnamed).getObject(Pocket).Length 5
App.ActiveDocument.recompute()
App.getDocument(Unnamed).getObject(Pocket).ReferenceAxis (App.getDocument(Unnamed).getObject(Sketch001),[N_Axis])
App.getDocument(Unnamed).getObject(Sketch001).Visibility False
App.ActiveDocument.recompute()
### End command PartDesign_Pocket
# Gui.Selection.clearSelection()
App.getDocument(Unnamed).getObject(Pocket).UseCustomVector 0
App.getDocument(Unnamed).getObject(Pocket).Direction (0, 0, -1)
App.getDocument(Unnamed).getObject(Pocket).ReferenceAxis (App.getDocument(Unnamed).getObject(Sketch001), [N_Axis])
App.getDocument(Unnamed).getObject(Pocket).AlongSketchNormal 1
App.getDocument(Unnamed).getObject(Pocket).Type 1
App.getDocument(Unnamed).getObject(Pocket).UpToFace None
App.getDocument(Unnamed).getObject(Pocket).Reversed 1
App.getDocument(Unnamed).getObject(Pocket).Midplane 0
App.getDocument(Unnamed).getObject(Pocket).Offset 0
App.getDocument(Unnamed).recompute()
App.getDocument(Unnamed).getObject(Pad).Visibility False
App.getDocument(Unnamed).getObject(Sketch001).Visibility False### Begin command Std_Export
__objs__ []
__objs__.append(FreeCAD.getDocument(Unnamed).getObject(Body))
import importWebGL
if hasattr(importWebGL, exportOptions):options importWebGL.exportOptions(u/home/liwentao/demo/freeCAD/RandomCoin.html)importWebGL.export(__objs__, u/home/liwentao/demo/freeCAD/RandomCoin.html, options)
else:importWebGL.export(__objs__, u/home/liwentao/demo/freeCAD/RandomCoin.html)
del __objs__
### End command Std_Export
# Macro End: /home/liwentao/.local/share/FreeCAD/Macro/myRandomCoin.FCMacro 保存得到的webGL格式文件可用浏览器打开
