home *** CD-ROM | disk | FTP | other *** search
- * @demtwop shows applications of the two-point filters
- * adne, adre, sune, sure;
- * adne A B pow dir adds part of
- * previous inpixel to current inpixel;
- * adre A B pow dir adds part of
- * previous outpixel to current inpixel;
- * sune A B pow dir subs part of
- * previous inpixel from current inpixel;
- * sure A B pow dir subs part of
- * previous outpixel from current inpixel;
- * pow determines part: 0=full, 1=half,,,, 7= 1/128;
- * dir determines direction: 0=East, 1= NE,,,, 7=SE;
- * adne and sure are each other's inverse;
- * adre and sune are each other's inverse;
- read trui
- his A
- sune A B 1 0
- his B
- sune B C 1 2
- his C
- sune C B 1 4
- his B
- sune B C 1 6
- his C
- sure C B 1 0
- his B
- sure B C 1 2
- his C
- sure C B 1 4
- his B
- sure B C 1 6
- * cop C D
- * his D
- * coded!
- adne C B 1 6
- his B
- adne B C 1 4
- his C
- adne C B 1 2
- his B
- adne B C 1 0
- his C
- adre C B 1 6
- his B
- adre B C 1 4
- his C
- adre C B 1 2
- his B
- adre B C 1 0
- his C
- * decoded!
-