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Chapter
2
Build
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Build – Subsample – Adaptively – Points
Reducing the Selected Points Adaptively
This command is used to reduce the points selected in the currently displayed element so that surface points
density in simple-shaped areas is lower than that in complicated-shaped areas.
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The elements selected before execution of this command will be divided to triangular polygons.
Parameters for [Build-Subsample-Adaptively-Points] Dialog Box
Number of points
Reduces the current number of points to the specied number. When the [Apply] button is clicked,
the current number of vertices will be displayed. (The default for the “Number of points” param-
eter is set so that the number of selected points will be reduced by 50%.)
Range of errors
The program reduces data in accordance with the value that you enter. The value serves as a gen-
eral yardstick for the amount of reduction-induced change in model tolerance.
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The default setting is “0.2”.
Fix boundary
Among the selected points, the points present on the boundary of the hole will be excluded from
data reduction.
Operating Procedure
1
From the element list, select one desired
element.
2
Select the desired points.
3
From the [Build] menu, select [Subsam-
ple] –[Adaptively] then click [Points].
The [Build-Subsample-Adaptively-Points] dia-
log box will appear.
• The selected element will be ready to be displayed
in all windows. It will be displayed if it is not dis-
played in the active window or the windows for
which all the elements are set to be displayed.
4
Set the parameters.
5
Click the [Apply] button.
The data of the selected points will be reduced
according to the parameter settings so that
surface points density in simple-shaped areas
is lower than that in complicated-shaped areas.
• The polygons comprising the selected element
will be triangulated.
• If you change the parameter settings and click
the [Apply] button again, the data comprising
the points will be reduced according to the new
parameter settings.
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In some cases, the number of vertices present after data
reduction may not match the specied number.
6
Click the [OK] button.
This will conrm execution of data reduction
and close the dialog box.