FreeCAD，Python Console 的操作

 

在 Python Console 的操作

 先選定一個 edge，綠色文字是系統的訊息。

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>>> # Gui.Selection.addSelection('ThinkBoard_test','ThinkBoard_v38','Case.Part__Feature002.Edge530',-98,90.1992,-18.3352)

>>> obj = Gui.Selection.getSelection()[0]

>>> print(obj.Name)

Part__Feature002

>>> sel = Gui.Selection.getSelectionEx()[0]

>>> print("Object:", sel.Object.Name)

Object: Part__Feature002

>>> print("SubElement:", sel.SubElementNames)

SubElement: ('Edge530',)

>>> edge = sel.SubObjects[0]

>>> print("ShapeType:", edge.ShapeType)

ShapeType: Edge

>>> print("Length:", edge.Length)

Length: 157.20277538480389

>>> p1 = edge.Vertexes[0].Point

>>> p2 = edge.Vertexes[-1].Point

>>> print("Start =", p1)

Start = Vector (-98.0, -25.2200000000001, -5.36840007947745)

>>> print("End   =", p2)

End   = Vector (-98.0, 130.999999999999, -22.9190179798644)

>>> import math

>>> dx = p2.x - p1.x

>>> dy = p2.y - p1.y

>>> dz = p2.z - p1.z

>>> angle = math.degrees(math.atan2(dy, dx))

>>> print("XY angle =", angle, "deg")

XY angle = 90.0 deg

>>> angle = math.degrees(math.atan2(dy, dz))

>>> print("YZ angle =", angle, "deg")

YZ angle = 96.41004642679681 deg

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寫一小段程式，計算角度

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import math

def edge_angle():

    sel = Gui.Selection.getSelectionEx()

    if not sel or not sel[0].SubObjects:

        print("請先選取一條 Edge")

        return

    edge = sel[0].SubObjects[0]

    if edge.ShapeType != "Edge":

        print("選取的不是 Edge")

        return

    p1 = edge.Vertexes[0].Point

    p2 = edge.Vertexes[-1].Point

    dx = p2.x - p1.x

    dy = p2.y - p1.y

    dz = p2.z - p1.z

    xy_length = math.sqrt(dx**2 + dy**2)

    length = math.sqrt(dx**2 + dy**2 + dz**2)

    angle = math.degrees(math.atan2(abs(dz), xy_length))

    print("Edge:", sel[0].SubElementNames[0])

    print("Length =", length, "mm")

    print("XY projection =", xy_length, "mm")

    print("Angle to XY plane =", angle, "deg")

    return angle

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