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Measurement Grid

A 3D view grid can be added to DG Kernel view for quick estimation of distances and locations.

To display/hide a grid select Advanced > View > Grid in the context menu of the component and turn on/off the Enabled check box in the grid properties form.

The grid can be rotated around its perpendicular at the origin (0, 0) by the "Rotate By" angle. If there was an angle measurement in screen plane the "Use Last Measured Angle" check box will be enabled. It allows copying the angle into the edit box. If "Interactive" check box is on, the grid can be rotated with up/down mouse movements on closing the dialog until the next mouse click.

If Control key was held, while selecting the Advanced > View > Grid menu option the grid dialog is skipped and default options are used to define the grid. The defaults can be changed using GridDefaultInteractive and GridDefaultUseMeasuredAngle properties of the component's context.

Grid has three styles: Infinite Dynamic, Model Space grid and 3D Background. Its position and orientation can be modified via the context menu properties dialog or programmatically. Lines of a Dynamic Grid are visible through opaque objects.

Programmatic access

There is no special interface for manipulation of grids. To enable or manipulate the grid programmatically obtain IKCContext of the grid via:

DG Kernel control > GetView() > IPropertyArray > IPropertyArray.GetProperty("3DGrid", ...) > IKCContext

To modify color of lines and text query IKCContext2 from IKCContext

To modify position and orientation of the grid query IFrame from the IKCContext. See DIView sample for an example.

Spacing of the grid can be modified in Dynamic mode by using the Step property and in Model Space mode by using the StepModelSpace property. See the table below for details

See also: DIView sample,