Get better tracing results

When you trace a bitmap image it is converted to shapes consisting of curves and lines. This is called auto-tracing. To get good looking and easy to edit graphics it is important that the lines, curves and corners are placed in the right places.

A curve or a line is defined by a starting point and an endpoint, these points are called nodes. A curve also has two handles which determine the start and end direction of the curve.

When a professional artist draws shapes he places nodes and handles in a certain way to get objects with the right look that are easy to control. Nodes should be placed in every corner and in every maxinum point of a curve, and at the maximum points the handles should be placed absolutely horizontal or vertical. You can look at any typeface to see for yourself that professional graphics are built this way.