Editing Line drawing algorithm (section)

==== Clipping ====
[[Clipping_(computer_graphics)|Clipping]] is an operation that limits rasterisation to a limited, usually rectangular, area. This is done by moving the start- and end points of the given line to the borders of this area if they lie outside of it. Generally, this leads to the coordinates of these points no longer being integer numbers. If these coordinates are simply rounded, the resulting line will have a different slope than intended. For this issue to be avoided, additional tests are necessary after clipping.