devCad

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Drawing over a raster file
Sometime you may want to draw over a raster file (for example a scanned plan or drawing), to vectorize it (or some part).
DevCad offer you the technology to do that.
The involved steps are:

Insert the raster file as an image background in a CAD drawing
Calibrate it, inserting the real length of a specified segment
Set a color to the lines of the drawing (optional). This can help you to distinguish between raster lines and CAD objects.
Enable Raster snap, to snap the cursor to the lines of the raster image (optional)
Draw lines, polylines, arcs, circle and so over the raster imag