Creating a Sketch from Scan (Legacy)

Sketch from Scan retrieves basic primitives (line, circle, ellipse) from planar scans and creates them as sketches.

  1. Select nonplanar scans, or meshes (to process their free edges), geometrical sets, multi-outputs, and selections sets.
  2. To impose constraints on the scans used to create the sketch. select the Display option Constraint.
  3. Manage split points manually:
    1. Move them using the Ctrl key.
    2. Pick a point of the scan to add a split point.
    3. Right-click a point to remove one or all points.
    4. Right-click a point and select Impose tangency to specify a tangency constraint.
    5. Deselect Impose tangency to specify a passage (Point) constraint.
  4. Or manage split points automatically.
    1. Select the Threshold check box and define its value.
      The scan is cut into segments, according to the threshold value. The endpoints of those segments are potential split points. Only the endpoints of the scans are proposed as fixed split points.
  5. Optional: Change the Tolerance (deviation between the output elements and the points of the scan).
  6. Click Apply.
    The sketch is computed.
  7. If the sketch is not complete, create additional split points by picking points on the scan.
  8. Click Apply
    The sketch is now fully computed.
  9. Click More to display the global statistics in the dialog box.
  10. To create primitives, specify Display as Primitive.
    An automatic recognition is proposed.
  11. Optional: Right-click a segment and select another computation option.

    • Automatic: The best primitive is computed.
    • Nothing: Nothing is computed.
    • Line, Circle, Ellipse: The best line, circle, or ellipse is computed.

  12. Click to display local deviations results (maximum and mean deviations).