Small unwanted edges of selected elements are removed. If possible vertical edges and horizontal edges are remain unchanged. The maximum length of edges to be removed is set in a dialog.
This feature allows four different ways to modify corners of selected shapes. All modification can be limited to positive/negative angles or sharp angles. Pathes and Boxes are converted to polygons by this operation. Zero width pathes and partly selected pathes are ignored.
|Add/Remove Area||An area is added/substracted to each corner of selected shape. The size of the added area is proportional to the angle of the corner and negative for inside angles/corners. The first required value is the size of an equivalent square added for a right angle. The second value describes how the area is added. This feature may be used for a rule based optical proximity correction (OPC).
Film stress can be a technology problem for fabrication. To reduced stress in wide metal areas small slots are insert. This feature does such slot insertion for all selected shapes. All required parameters can be set in a dialog. If the choosen parameter would require more than 20.000 slots, no modifications are made as the resulting polygons will no longer be handable afterwards. In that case please split the shapes before using the cut feature.
The outer outline and the outline of holes can be moved to separate layers.
In printed Circuit Boards (PCB) ofen a good balance between metalized and blank area is requiered. For a unused area a mesh will be used to achive this. With the this function you can convert polygon and boxes to a mesh. You will be prompted to enter width and spaces of the mash.
Selected shapes are splitted. There are four diferent types of resulting shapes:
|non overlapping triangles|
|overlapping rectangle, may be non-orthogonal orientated|
|non overlapping trapezoids|
Elements identical in its shapes and its layer are impossible to see in the main display and often only to be recognized by the select counter. This feature will detect such double shapes and delete all copies except one in the current cell on all layers.
The feature adds the biggest possible circle inside any selected shapes. As a result the centre of each circle is the poly of inaccessibility of a shape. All circles will be added to the active layer.