Autodesk 00126-050008-1640A User Guide - Page 160

WiseImage - User's Guide The program highlights with a color marker the point, to which the snap is supposed to be made. If you hold the cursor over the object, then a tooltip with the current snap mode name appears at the point. For each snap type a special marker is used. If there is any problem with precise snapping, then you should zoom the image on the screen. * The marker bitmap color is specified in the WiseImage tab of the AutoCAD customizing dialog box, as described in "Colors Section" on page 33. Setting Raster Snap The size of the raster snap pickbox is equal to the size of the AutoCAD object snap pickbox. To resize it, use the procedure described in the AutoCAD User's Guide. The raster snap operation is based on algorithms for raster object recognition. The program calculates vector objects, approximating the specified raster lines and snaps to the characteristic points of these vector objects. That is why the operation of the raster snap tools depends on the parameters set in the Options tab of the Conversion Options dialog box. Note that raster snap only works when you use the commands described in the initialization file of the APP.INI program, in the section "Running Raster Snap AutoCAD Commands". You can edit this section if the command list is modified. To tune raster snap 1. Click the Conversion Options button on the Raster to Vector toolbar. 164