Autodesk 00126-050008-1640A User Guide - Page 132

9 Working with Raster Selection Comparing the Crossing Window selection methods Let us consider several examples that illustrate the difference between raster selection types that apply to the same selection methods. In the first example we select raster using the Crossing Window method with the different raster selection types. Note that when you select raster with Crossing Window, you should click on two opposite corners of a rectangular area. Once the area is defined, the program selects all raster data that lies entirely inside the area and adds the raster objects crossing the area boundary. In the examples below we select, and then delete raster to see which raster objects have been selected. In all three cases the selection window is defined in the same manner. The dimension line and the text lie inside the window, the extension lines cross the selection window. The selection window boundary is shown as a dashed rectangle. Entity Type Recognition In this case the program selects the entire dimensional object including the extension lines up their intersections with the third circle, endpoints of the crossed raster entities . After deletion of raster graphics (see the figure) the raster circles that were crossed by the deleted extension lines are not broken. Line Following In this case the program selects the entire dimensional object as well, but extension lines are selected only up to their intersections with the first circle. Parts of the crossed raster lines limited by nodes are added to the selection set. This shows in the figure that represents the deletion result. 135