X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Fconfig%2Fblitspin.xml;fp=hacks%2Fconfig%2Fblitspin.xml;h=d7e73b2ea6d5ee1e7e554af0d6dba5c6d6ca325d;hb=8eb2873d7054e705c4e83f22d18c40946a9e2529;hp=0000000000000000000000000000000000000000;hpb=a1d41b2aa6e18bf9a49b914a99dda8232c5d7762;p=xscreensaver diff --git a/hacks/config/blitspin.xml b/hacks/config/blitspin.xml new file mode 100644 index 00000000..d7e73b2e --- /dev/null +++ b/hacks/config/blitspin.xml @@ -0,0 +1,35 @@ + + + + + + + + + + + + + + + <_description> +The ``blitspin'' hack repeatedly rotates a bitmap by 90 degrees by +using logical operations: the bitmap is divided into quadrants, and +the quadrants are shifted clockwise. Then the same thing is done +again with progressively smaller quadrants, except that all +sub-quadrants of a given size are rotated in parallel. Written by +Jamie Zawinski based on some cool SmallTalk code seen in in Byte +Magazine in 1981. + +As you watch it, the image appears to dissolve into static and then +reconstitute itself, but rotated. You can provide the image to use, +as an XBM or XPM file, or tell it to grab a screen image and rotate +that. + +