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Constrained Points
Constrained points ensure that a parametrically drawn line is straight but will restrict the ability to move the point freely.
Constrained points are automatically set when using the draw tool, and adding a new point to an existing line, or when clicking an existing point and ticking the snap to line checkbox on the select toolbar.
Identifying Constrained Points
Constrained and unconstrained points are distinguished by their respective icons.
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A constrained point, snapped to a line. |
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An unconstrained point |
Stations as Constrained Points
Stations may be constrained in the same way as other constrained points. If you find that you are unable to move a station in any direction other than left or right across a line, unchecking snap to line will allow you to position your station in any location and the connected path will bend to accommodate.