Specialized Concentrated Focused
Menu Functions
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Fig. 4-29 Catch options
In the above dialog, any choice box checked, its corresponding item is displayed in the [Object Editor
Space], otherwise, hidden.
Feature point of each shape
1) The feature point of a spot: a point;
2) The feature point of a straight line: two endpoints and one midpoint;
3) The feature point of a polyline: every node and a circle center;
4) The feature point of a rectangle: four vertexes;
5) The feature point of a circle: four quadrant points and a circle center;
6) The feature point of an ellipse: four quadrant points and a circle center;
7) The feature point of an arc: a start point, an end point, a midpoint and a circle center.
Advantages of opening [Catch Options]
The user can directly use the cursor to position to an above-mentioned feature points precisely without
knowing the concrete coordinates, which is convenient for the accurate connection of objects in
drawing. This function is always used together with [Combine] function.
