User Guide
User Guide
User Guide

Place Point or Stream Curve

Use it!

Used to place a point or stream curve.

Tool SettingEffect
Method

Sets how the curve is defined.

  • Points
    • — Traditional MicroStation curve: “Flat” between the first and second and next-to-last and last data points entered. In many cases, B-splines are more accurate and easier to manipulate.
  • Stream
    • — Primarily for tracing images when digitizing. Many vertices can be defined without having to enter a large number of individual data points. The movement of the tablet cursor is sampled and data points are recorded based on the Active Stream Delta, Tolerance, Angle, and Area.
Non-planar

If on and Method is set to Points, a space curve can be placed (the active design must be 3D).

Delta

If Method is Stream, sets the minimum distance, in working units, between sampled points.

Tolerance

If Method is Stream, sets the maximum distance, in working units, between recorded data points.

Angle

If Method is Stream, sets the angle, in degrees, that when exceeded, causes the last sampled point to be recorded as a data point.

Area

If Method is Stream, sets the area that, when exceeded, causes a sampled point to be recorded as a data point.

To place a point curve
  1. Select the Place Point or Stream Curve tool.

  2. In the tool settings window, set Method to Points.

  3. Enter a data point to define the curve's beginning.

  4. Enter a second data point for the first curve segment.

  5. Enter a data point to complete the first curve segment.

  6. Enter additional data points to add segments to the curve.

  7. Reset to end the curve.

    Placing a point curve

      

To place a stream curve
  1. Select the Place Point or Stream Curve tool.

  2. In the tool settings window, set Method to Stream.

  3. Enter a data point to define the origin.

  4. Move the pointer. A stream of data points is entered without pressing the Data button.

  5. Reset to end the curve.

Key-in: PLACE CURVE [PICON | POINT | STREAM]

A curve element can have 3 to 5000 vertices. If more than 5000 vertices are defined, a complex chain consisting of one or more curve elements is created.

The tool settings Delta, Tolerance, Angle, and Area can also be set in the DGN File Settings dialog box (Settings > Design File…), in the Stream category.

To place a stream line string, use the Place Stream Line String tool.