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TerraScan User Guide

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Point display

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Point display

Point display category determines how points in TerraScan are drawn on the screen relative to other CAD file or Terra Application elements. It also defines default display settings as well as various additional settings related to more specific point display in TerraScan.

SETTING

EFFECT

Display method

Order

Order of drawing points on the screen relative to other elements, such as vector data in the CAD file, images in TerraPhoto, surface models in TerraModeler:

Before vectors - point are drawn first on the screen, before other elements. This means, they are displayed behind other elements in CAD file views.

After vectors - points are drawn last on the screen, after other elements. This means, they are displayed in front of other elements in CAD file views.

Default display mode settings - The values can be changed in the Display mode dialog.

Weight

Default size of points on the screen. Can be defined by point class or uses standard line weights.

Speed

Default speed for point display:

Fast - sparse points - amount of displayed points depends on the zoom factor. If you zoom out, only a subset of points is drawn. This is the recommended setting for displaying a larger amount of points.

Normal - more points are drawn. The software decides based on the density of the point cloud. In sparse data sets, this already draws all points.

Slow - all points - all points are drawn at every zoom level. This may slow down the display speed for a large amount of points.

Borders

Default setting for enhanced depth display of the point cloud. The setting determines how much space on the screen is covered by black borders that separate foreground points from background points. An enhanced depth perception can be achieved by displaying points with Borders > 0. See also the description of the setting in the Display mode dialog.

Coloring schemes - The same action can be performed for the corresponding coloring modes in the Display mode dialog.

Fit automatically

If on, color schemes for displaying points by elevation and intensity are fitted automatically to the corresponding values of points when they are loaded into TerraScan.

If off, the software keeps the elevation and intensity values of the previous data set for the color schemes.

Background in camera views

Draw sky if ‘Use depth’ is on

If on, the background of camera views is drawn as “sky color scheme” (blue to black color gradient). This effects views for which the Borders setting is > 0 in the Display mode dialog. It may result in a more realistic point cloud visualization, especially for mobile ground-based data sets.

Group coloring mode - Refers to the Group coloring mode in the Display mode dialog.

Display non-grouped points

If on, points that are not assigned to any group are displayed with the color selected in the color field. Click on the color field in order to select the display color. Uses the active color table of the CAD file.

Vegetation index limits - Refers to the Vegetation index coloring mode in the Display mode dialog.

Normalized difference

Threshold value for displaying points by Vegetation index / Normalized difference method. The default value is 0.0, difference values may range from -1 to +1.

Visual band difference

Threshold value for displaying points by Vegetation index / Visual band difference method. The default value is 0.05, difference values may range from -1 to +1.

TerraScan User Guide   26.07.2021   © 2021 Terrasolid Ltd