KOMPAS-3D v23

There are three methods to recognize a grid of points. All these methods involve searching for cells of the grid: in the space itself or in the plane. All the points of the layer are projected onto the plane, and then the algorithm looks for cells formed by the projected points.

The shape of the cells depends on the type of the surface:

•cells of the surfaces Spline by Vertices or Spline by Poles are quadrangular,

•cells of a polyhedral surface are triangular.

If cells in the plane are found, they are used as a base to select the cells in space.

You can always find triangular cells, but not quadrangular cells.

If the quadrangular cells are not found in space nor in the plane, then the grid is plotted in such a way that each series or one direction would pass through the point of the layer. In the second direction, the grid has two series.

To select grid recognition method, use the Method group of buttons on the Parameter Panel:

Automatically — a method of recognizing a grid, where the cells are first searched for in space. If the cells are not found in space, the software tries to locate them in the plane. The position of this plane is determined automatically depending on the mutual position of the points of the layer.

In the CS plane — grid cells are located in the XY plane specified by the user of the coordinate system. If you select this method, the field Select the coordinate system for the object with the list of the coordinate systems will be available on the Parameter Panel.

In the screen plane — grid cells are located in a plane parallel to the screen, i.e., the surface shape depends on how the model is positioned relative to the observer. When you select this method, the Fix Position setting is available. If you enable this setting, the surface will be fixed in the shape that corresponds to the current position of the model. If this setting is disabled, the surface is rebuilt every time the model orientation is changed. Please note that the shape of the surface (especially if it’s a polyhedron surface) may significantly change if you slightly change the position of the model.

It is recommended to use the following way to recognize a grid of points.

1.Use the Automatically method.

2.If you are not satisfied with the result of automatic recognition, please use the In the CS plane and Within screen plane methods to select a suitable plane for projecting the points.

3.If you cant get the correct shape of surface using these methods, please edit the point layer: plot additional points in the creation mode, or delete/move points in the editing mode.