mirror of
https://github.com/lalbornoz/roar.git
synced 2024-11-04 23:06:39 +00:00
127 lines
2.0 KiB
Plaintext
127 lines
2.0 KiB
Plaintext
|
BRUSH SHADERS
|
||
|
|
=============
|
||
|
|
|
||
|
|
Unless noted, these shaders were written to work on the brush itself.
|
||
|
|
Make sure "brush" is selected and "animate" is checked.
|
||
|
|
|
||
|
|
|
||
|
|
>> distressed texture brush
|
||
|
|
|
||
|
|
Sample use of the "choice" function to get a random color.
|
||
|
|
|
||
|
|
var char = choice(" abcdef ")
|
||
|
|
lex.bg = +choice("0124")
|
||
|
|
lex.fg = +choice("01234")
|
||
|
|
lex.char = char
|
||
|
|
lex.opacity = char == " " ? 0 : 1
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> foggy terrain brush
|
||
|
|
|
||
|
|
var char = choice(" abcdef ")
|
||
|
|
lex.bg = choice([14,15])
|
||
|
|
lex.fg = choice("367")
|
||
|
|
lex.char = char
|
||
|
|
lex.opacity = char == " " ? 0 : 1
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> mirror brush (left-right)
|
||
|
|
|
||
|
|
NOTE: Animate this on the canvas, then draw:
|
||
|
|
|
||
|
|
if (x > w/2) {
|
||
|
|
lex.assign( canvas.aa[y][w-x] )
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> mirror brush (up-down)
|
||
|
|
|
||
|
|
NOTE: Animate this on the canvas, then draw:
|
||
|
|
|
||
|
|
if (x > h/2) {
|
||
|
|
lex.assign( canvas.aa[h-y][x] )
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> rainbow stardust brush
|
||
|
|
|
||
|
|
Uncheck BG and animate this to brush:
|
||
|
|
|
||
|
|
lex.fg = hue(t)
|
||
|
|
lex.char = choice(" ,'.,.','****** ")
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> noise brushes, works on a black background:
|
||
|
|
|
||
|
|
lex.bg = max(5, yellow(randint(t)))
|
||
|
|
lex.opacity = lex.bg == colors.black ? 0 : 1
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> simple rainbow:
|
||
|
|
|
||
|
|
if (lex.bg != 1) lex.bg = randint(t)
|
||
|
|
lex.opacity = lex.bg == colors.black ? 0 : 1
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> self-erasing:
|
||
|
|
|
||
|
|
if (lex.bg != 1) lex.bg = yellow(randint(t))
|
||
|
|
lex.opacity = lex.bg == colors.black ? 0 : 1
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> cycling rainbow brush
|
||
|
|
|
||
|
|
if (lex.bg != 1) lex.bg = hue( all_color_hue_order.indexOf( color_names[ lex.bg ] ) + 1 )
|
||
|
|
lex.opacity = lex.bg == colors.black ? 0 : 1
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> "stars" brush.. set your brush to paint just the character "#"
|
||
|
|
|
||
|
|
if (lex.char == "#") {
|
||
|
|
lex.fg = hue(randint(15))
|
||
|
|
lex.char = random() > 0.1 ? " " : "+@*.,\"+'*-"[randint(10)]
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> use fg char to mask mask what you're drawing on the bg
|
||
|
|
|
||
|
|
if (lex.char != "/") { lex.bg = 1 }
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> sharded glitch brush
|
||
|
|
|
||
|
|
Example: http://asdf.us/z/kksnvs.png
|
||
|
|
|
||
|
|
Use on a brush:
|
||
|
|
|
||
|
|
lex.bg = t/y/x
|
||
|
|
lex.opacity = lex.bg % 1 ? 0 : 1
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
>> incremental brush
|
||
|
|
|
||
|
|
Set your brush to be the ^ character, square, about 10x10
|
||
|
|
Draw "char" only
|
||
|
|
Then animate this shader on the canvas:
|
||
|
|
|
||
|
|
if (lex.char=="^") {
|
||
|
|
lex.bg += 1
|
||
|
|
lex.char = " "
|
||
|
|
}
|
||
|
|
lex.bg += 1
|
||
|
|
|
||
|
|
|
||
|
|
|