mirror brushes

1 files changed, 44 insertions, 0 deletions

diff --git a/doc/shaderz.txt b/doc/shaderz.txt
index f1af1d8..e3581aa 100644
--- a/doc/shaderz.txt
+++ b/doc/shaderz.txt
@@ -270,4 +270,48 @@ if (lex.char=="^") {
 lex.bg += 1
 
 
+>> copy color brushes
+
+Set to "animate brush", then use option+shift (alt+shift?) to
+copy color from the canvas. Brush will have "shape" of 
+copied color only.. can be a cool effect when used with fg/bg only.
+
+lex.opacity = lex.bg == colors.black ? 0 : 1
+
+
+>> 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)
+
+Animate this on the canvas, then draw:
+
+if (x > w/2) {
+  lex.assign( canvas.aa[y][w-x] )
+}
+
+
+>> mirror brush (up-down)
+
+if (x > h/2) {
+  lex.assign( canvas.aa[h-y][x] )
+}
+