When large drawings are placed on a small screen, some pixels from the original drawing cannot be shown. Two or more pixels from the large drawing must be mapped into one destination pixel on the screen. Traditionally, this operation meant that small lines and details could disappear.

Creo Elements/Direct Drafting provides aliasing to let you control quality-time trade-offs of large drawing displays. Aliasing algorithms establish an area of investigation in the large drawing; formulas compute an average color tone for that area; and the system maps that color result to the destination pixel. Areas of investigation are based on one pixel and a pattern of its neighbors. Color tone result is grey-scale, an average of the original black and white pixels.

To control display quality using aliasing:

Positive input between 0 and 2 tells the system to use a block of converging pixels in the aliasing formula. Input 2 to use the largest possible block of neighboring pixels. This results in the slowest possible operation.

Input 0 to produce the fastest operation. No aliasing.

Negative input between 0 and -2 tells the system to use pixels on a diagonal in the aliasing formula. This option is much faster than using blocks, and often produces a picture of good quality. Input -2 to use the largest number of neighboring diagonal pixels in the aliasing formula.