[Create grid from Polygonal line and width]¶
Description: Creates a grid that smoothly follows a Polygonal line. Figure 218 shows an example of a grid created by this algorithm.
After selecting this algorithm, click on the canvas to specify a few points on the centerline of the grid. To finish, press the Enter key or double click. Figure 219 shows an example of the display when the grid centerline has been set.
After the centerline has been set, select [Create Grid] from [Grid] on the menu. The [Grid Creation] dialog (Figure 220) will open. Click on [Apply] to see the resulting grid, adjust the input data and click on [OK].
To edit the vertexes of the centerline, select from the menu shown in Table 16.
[Add Vertex] (A)¶
Description: Adds vertices to the centerline.
While selecting it, move the mouse onto the centerline. The mouse cursor changes shape as shown in Figure 221. Left clicking adds a new vertex.
[Remove Vertex] (R)¶
Description: Removes a vertex from the centerline.
While selecting it, move the mouse onto the centerline. The mouse cursor changes shape as shown in Figure 222. Left clicking removes the selected vertex.
[Edit Vertices Coordinates] (O)¶
Description: Edits the coordinates of the vertex of centerline.
When you select this, the [Polyline Coordinates] dialog (Figure 223) will open. Edit the coordinates and click on [OK].
[Line Direction] (E)¶
Description: Reverce the center line direction. Figure 224 shows an example. Note that the “Upstream” and “Downstream” are reversed.
[Remove Centerline] (C)¶
Description: Removes the centerline and restores the condition immediately after the algorithm was selected.
After removing the centerline, click on the canvas to define the centerline in the same way as the first centerline was defined after selecting the algorithm.