Object - Snap to
Object - Snap to opens the Snap Objects dialog box which allows you to "snap" or align the points of the polygon(s) in one of three useful ways:
Cells: All points on the selected polygons are aligned to a cell edge. You can choose to align points in both the X and Y direction, only the X direction, or only the Y direction.
• X and Y - Both the X and Y coordinates of each point in the selected polygon(s) will correspond to a cell edge.
• X only - The X coordinate of each point in the selected polygon(s) will correspond to a cell edge. The Y coordinate of the points does not change.
• Y only - The Y coordinate of each point in the selected polygon(s) will correspond to a cell edge. The X coordinate of the points does not change.
Current Snap Grid: All points on the selected polygons are aligned to the Snap Grid as defined in the Snap/Ortho page of the View Options dialog box. If the current Snap Grid is set to the cell size, then this option is not enabled, since in that case, the Cells option above is the equivalent of this selection. You can choose to align points in both the X and Y direction, only the X direction, or only the Y direction.
• X and Y - Both the X and Y coordinates of each point in the selected polygon(s) will correspond to a snap grid edge.
• X only - The X coordinate of each point in the selected polygon(s) will correspond to a snap grid edge. The Y coordinate of the points does not change.
• Y only - The Y coordinate of each point in the selected polygon(s) will correspond to a snap grid edge. The X coordinate of the points does not change.
Box Walls: This option is enabled only if you are in edit points mode and have selected points on a polygon. You then select a box wall: Left, Right, Top or Bottom. All selected points will be moved to correspond to the Box wall. This can be used to ensure that your metalization extends to the box wall.
Snap Mode
When you snap a circuit to the grid, you have a choice of snapping each vertex on all the polygon(s) to the grid or selecting a reference point to snap and having all other vertices maintain their position relative to that reference point.
Snap all points individually: Select this radio button to snap all the vertices in the selected polygons to the grid when you perform the snap command.
Preserve shape and spacing relative to the reference point: Select this radio button is you wish to snap a reference point contained in the selected polygon(s) to the grid with all other vertices maintaining their position relative to the reference point. For example, if a vertex is 3 mils below the reference point, it will still be 3 mils below the reference point after the snap is completed. If you select this option, you must click on the Select Reference Point button to select a reference point for the snap to command.
Select Reference Point: Click on this button to select the reference point to be used during the snap command. This reference point is only needed if you select the Preserve shape and spacing option above. When you click on the button a ''+'' cursor appears on your display. Click on the desired reference point. When you select the reference point, the Snap Objects dialog box appears again on your display.
