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How can I add elevation on arc without changing its structure?

  • March 17, 2019
  • 3 replies
  • 14 views
arthy
Contributor
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  • arthyContributor
  • Contributor
  • 101 replies

Hello,

I would like to add elevation values on arc without changing its structure.

Before, I have this arc

0684Q00000ArCgBQAV.png

And after I would like the arc to have this where the highlighted values should be the elevation values

0684Q00000ArCU6QAN.pngSO far my idea to do that is to use

arc =feature.getGeometry()                    
feat.setStartPoint(fmeobjects.FMEPoint(feat.getStartPoint().getXYZ()[0], feat.getStartPoint().getXYZ()[1], elevation_start))                      
feat.EndStartPoint(fmeobjects.FMEPoint(feat.getEndtPoint().getXYZ()[0], feat.getEndPoint().getXYZ()[1], elevation_end]))  

but it is not working.

Any hints?

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    3 replies

    takashi
    Celebrity
    • takashiCelebrity
    • 7843 replies
    • March 18, 2019

    If you need to convert an "Arc By Center Point" to an "Arc By Center Point With Ends", you can re-create required arc based on properties of the original arc using a constructor of fmboejcts.FMEArc with this signature. See the API documentation.

    init(centerPoint, rotation, primaryRadius, secondaryRadius, startAngle, sweepAngle, startPoint, endPoint)

    Creates an arc using the center point supplied, along with the supplied radii, angles, and points. All angles are CCW up from the horizontal, and are measured in degrees.

    Parameters:    
    centerPoint (FMEPoint) – The centerPoint of the arc.
    rotation (float) – The rotation of the arc.
    primaryRadius (float) – The primary radius of the arc.
    secondaryRadius (float) – The secondary radius of the arc.
    startAngle (float) – The start angle of the arc.
    sweepAngle (float) – The sweep angle of the arc.
    startPoint (FMEPoint) – (Optional) The start point of the arc.
    endPoint (FMEPoint) – (Optional) The end point of the arc.
    Return type:    
    FMEArc

    Returns:    
    An instance of an Arc Geometry object.

    e.g.

    import fmeobjects
    def processFeature(feature):
        arc = feature.getGeometry()
        newArc = fmeobjects.FMEArc(
            arc.getCenterPoint(),
            arc.getRotation(),
            arc.getPrimaryRadius(),
            arc.getSecondaryRadius(),
            arc.getStartAngle(),
            arc.getSweepAngle(),
            arc.getStartPoint(),
            arc.getEndPoint()
        )
        feature.setGeometry(newArc)

     

    Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
    takashi
    Celebrity
    • takashiCelebrity
    • 7843 replies
    • March 18, 2019

    If you need to convert an "Arc By Center Point" to an "Arc By Center Point With Ends", you can re-create required arc based on properties of the original arc using a constructor of fmboejcts.FMEArc with this signature. See the API documentation.

    init(centerPoint, rotation, primaryRadius, secondaryRadius, startAngle, sweepAngle, startPoint, endPoint)

    Creates an arc using the center point supplied, along with the supplied radii, angles, and points. All angles are CCW up from the horizontal, and are measured in degrees.

    Parameters:    
    centerPoint (FMEPoint) – The centerPoint of the arc.
    rotation (float) – The rotation of the arc.
    primaryRadius (float) – The primary radius of the arc.
    secondaryRadius (float) – The secondary radius of the arc.
    startAngle (float) – The start angle of the arc.
    sweepAngle (float) – The sweep angle of the arc.
    startPoint (FMEPoint) – (Optional) The start point of the arc.
    endPoint (FMEPoint) – (Optional) The end point of the arc.
    Return type:    
    FMEArc

    Returns:    
    An instance of an Arc Geometry object.

    e.g.

    import fmeobjects
    def processFeature(feature):
        arc = feature.getGeometry()
        newArc = fmeobjects.FMEArc(
            arc.getCenterPoint(),
            arc.getRotation(),
            arc.getPrimaryRadius(),
            arc.getSecondaryRadius(),
            arc.getStartAngle(),
            arc.getSweepAngle(),
            arc.getStartPoint(),
            arc.getEndPoint()
        )
        feature.setGeometry(newArc)

     

    This script is also possible, if you just need to set z-coordinate to start and end points.

    def processFeature(feature):
        elevation_start = 100
        elevation_end = 200
        arc = feature.getGeometry()
        p0 = arc.getStartPoint()
        p1 = arc.getEndPoint()
        p0.setZ(elevation_start)
        p1.setZ(elevation_end)
        arc.setStartPoint(p0)
        arc.setEndPoint(p1)
        feature.setGeometry(arc)
    Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
    arthy
    Contributor
    Forum|alt.badge.img+8
    • arthyContributor
    • Author
    • Contributor
    • 101 replies
    • March 19, 2019

    This script is also possible, if you just need to set z-coordinate to start and end points.

    def processFeature(feature):
        elevation_start = 100
        elevation_end = 200
        arc = feature.getGeometry()
        p0 = arc.getStartPoint()
        p1 = arc.getEndPoint()
        p0.setZ(elevation_start)
        p1.setZ(elevation_end)
        arc.setStartPoint(p0)
        arc.setEndPoint(p1)
        feature.setGeometry(arc)

    Thanks @takashi

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