Autodesk 05726-091452-9060 User Guide - Page 183

WiseImage - User's Guide Parameter Auto Extend vectors Export single contour Description This feature simplifies forced selection and tracing of arcs and lines. While recognizing a line you can click two arbitrary points on it; and WiseImage automatically extends the resulting line to its endpoints. While recognizing an arc you can click three arbitrary points on it; and WiseImage automatically extends the resulting arc to its endpoints. This checkbox tunes the performance of selecting raster areas by tracing outlines (see page 174). If the box is selected, then tracing creates the outer contour of the object. If the checkmark is off, then tracing yields the outer contour and the inner one, if there are "holes" in the raster object. Controlling Properties of Created Objects When creating vectors by tracing (and also with the automatic vectorization procedure in the Pro version), the program by default assigns the current values of color and layer properties of the AutoCAD system to the generated vector objects. The program also calculates the width of vectorized raster lines and assigns to approximating vector objects the value of Lineweight, nearest to the calculated lines widths. Þ You can only obtain the correct results of assignment of objects widths during vectorization in the case where the width of raster lines does not exceed 2.11 AutoCAD units, as the Lineweight parameter can only accept a finite set of values in the range 0 to 2.11 mm. Therefore raster objects, used for vectorization, are recommended to be inserted into AutoCAD drawings at a scale of 1:1. Using the Separate tab of the Conversion Options dialog box, you can control the properties of created vector objects: calibrate the widths of obtained vector objects, place vector objects, corresponding to raster lines from the specified ranges of width on various AutoCAD layers and/ or assign various colors to created objects. 188