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GEOVIA Surpac

Display strings with colour fill

This function draws string segments as polygons with the string number at the start of each segment. Polygons are plotted as colour and pattern filled regions and will be used for hidden surface removal when the HIDE ON function is enabled. The presentation style for the data that are drawn is defined in the drawing styles file that is associated with the string file in the active graphics layer. This function only draws string segments as polygons and disregards the Drawing Method defined in the styles file.

To run this function: Choose Display > Strings > With colour fill, or...

  • In the Function Chooser, type DRAW POLYGONS, and press ENTER.

Note: This function only draws data from the active graphics layer.

Layer name

The name of the layer from which the data are to be drawn may be entered here. The active layer is provided as the default value. You may draw data from all graphics layers by leaving this field blank.

String range

Enter the string range which is to be drawn on the screen. The range must be a standard range specifier. You may leave the range blank if you wish to draw all strings in the layer.

Segment range

Enter the segment range which is to be drawn on the screen. The range must be a standard range specifier. You may leave the range blank to draw all segments of each string that is to be drawn

Seg pnt range

This input has no effect for this function. The input field is only present through use of a common input form with other drawing functions.

Desc field number

The entry in this field has no effect for this function.

Location for legend, Legend title

It is often very useful to have a legend presented on the graphics screen to provide a simple and intuitive means of describing the meaning of the colours for each of the polygons that have been drawn. A number of drawing functions have the ability to create such a legend for the data which is drawn.

Follow this link for complete details on how legends work for each of the functions which draw string data.

Result

The specified data are drawn. Whether faces and or edges are shown is dependent upon the global drawing attributes for these features.

Errors

Points for the Polygon are not coplanar

An important feature of polygons is that the points within a polygon must be coplanar, i.e. all points must be on one flat plane. This message indicates that this is not the case. For example, the Z value of all points in the segment must be the same.