tangle
Here is a little "something" for the K3 I whipped up, inspired
by the K3 graphical exploits of PoP and kaminkatze:
...tangle:
Spoiler:
PHP Code:
#!/bin/sh
######################################
## tangle - triangle fun for the K3 ##
## version 1.0 by geekmaster ##
##----------------------------------##
## WARNING: K3 eips '' very slow... ##
## so use eips only in OUTER loops! ##
######################################
#=================================
# initvar - initialize global vars
#---------------------------------
initvar() {
B=$(echo -e '\xff');B=$B$B$B$B$B;B=$B$B$B$B$B;B=$B$B$B$B;B=$B$B$B
DZ=/dev/zero DN=/dev/null DF=/dev/fb0 VX=300
}
#========================
# bangle - black triangle
# usage: bangle x y h
#------------------------
bangle() {
local x=$1 y=$2 h=$3
for i in $(seq 0 1 $h); do
echo -e $B|dd of=$DF bs=1 count=$i seek=$(((y+i)*VX-i/2+x)) 2>$DN
done; eips ''
}
#========================
# wangle - white triangle
# usage: wangle x y h
#------------------------
wangle() {
local x=$1 y=$2 h=$3
for i in $(seq 0 1 $h); do
dd if=$DZ of=$DF bs=1 count=$i seek=$(((y+i)*VX-i/2+x)) 2>$DN
done; eips ''
}
#=================================
# tangle - triangle fun for the K3
#---------------------------------
tangle() {
bangle 150 250 284
wangle 150 275 242
bangle 150 300 100
bangle 100 400 100
bangle 200 400 100
wangle 150 320 66
wangle 100 420 66
wangle 200 420 66
bangle 150 400 50
bangle 125 400 25
bangle 175 400 25
bangle 150 450 25
wangle 150 416 25
bangle 150 335 42
bangle 100 435 42
bangle 200 435 42
eips 19 28 "Tangle 1.0"
eips 18 30 "by Geekmaster"
}
eips -c # clear screen
initvar # init vars
tangle # triangle fun for the K3
[B]
WARNING: K3 eips '' very slow...
so use eips only in OUTER loops!
....FAQ:
EDIT: I did this as a quick demo, to show that we can do fast framebuffer graphics by using a larger "dd count=" value for large area fills, as I did here. I recommend modifying the midpoint circle algorithm to use a similar method for filled circles, to be used in Conway's Life, Reversi (Othello) or other "go"-based games, checkers, bingo, and just pure graphic artworks. Amazing what we can do with simple shell scripting and a little imagination, isn't it?
