From 5907322e23673884ceb48d2a07f930337bdf18db Mon Sep 17 00:00:00 2001
From: Jules Laplace <jules@okfoc.us>
Date: Sat, 22 Nov 2014 18:32:08 -0500
Subject: stroking brush

---
 index.html       |  2 +-
 js/app.js        |  2 +-
 js/draw.js       | 15 +++++++++++++--
 js/lex.js        |  4 ++--
 js/ui/canvas.js  | 11 ++++++++---
 js/ui/palette.js |  3 +--
 6 files changed, 26 insertions(+), 11 deletions(-)

diff --git a/index.html b/index.html
index f56f77d..a6ea2e7 100644
--- a/index.html
+++ b/index.html
@@ -41,7 +41,7 @@ body.grid .focused { box-shadow: inset 0 0 2px white, inset 0 0 2px white, inset
 <input type="text" id="cursor_input">
 </body>
 <script type="text/javascript-shader" id="demo_shader">
-	lex.bg = colors[color_hue_order[Math.floor((x+y*y+t)/20)%16]]
+	lex.bg = hue((x+y*y+t/10)/20)
 	lex.fg = (x+y)%16
 	lex.char = (y%2) ? ":" : "%" 
 
diff --git a/js/app.js b/js/app.js
index 223edcc..715def9 100644
--- a/js/app.js
+++ b/js/app.js
@@ -12,7 +12,7 @@ function init () {
 }
 function build () {
 	shader.init()
-	shader.run(canvas)
+//	shader.run(canvas)
 	shader.animate()
 
 	canvas.append(canvas_rapper)
diff --git a/js/draw.js b/js/draw.js
index c72ca08..173a84e 100644
--- a/js/draw.js
+++ b/js/draw.js
@@ -4,11 +4,22 @@ function draw (lex, x, y, erasing) {
 	stamp (canvas, brush, x, y, erasing)
 }
 
+function line (lex, a, b, erasing) {
+	var len = dist(a[0], a[1], b[0], b[1])
+	var bw = 1
+	var x, y, i;
+	for (var i = 0; i < len; i += bw) {
+		x = lerp(i / len, a[0], b[0])
+		y = lerp(i / len, a[1], b[1])
+		stamp (canvas, brush, x, y, erasing)
+	}
+}
+
 function stamp (canvas, brush, x, y, erasing) {
 	hh = brush.w/2|0
 	brush.forEach(function(lex, s, t){
-		s += x-hh
-		t += y-hh
+		s = round( s + x-hh )
+		t = round( t + y-hh )
 		if (s >= 0 && s < canvas.w && t >= 0 && t < canvas.h) {
 		  if (erasing) {
         canvas.aa[t][s].erase(lex)
diff --git a/js/lex.js b/js/lex.js
index 56d8280..17884d1 100644
--- a/js/lex.js
+++ b/js/lex.js
@@ -35,14 +35,14 @@ Lex.prototype.irc = function(){
 	}
 }
 Lex.prototype.clone = function (lex){
-	if (lex.isClear()) return
+	if (lex.opacity == 0) return
 	this.fg = lex.fg
 	this.bg = lex.bg
 	this.char = lex.char
 	this.build()
 }
 Lex.prototype.erase = function (lex){
-	if (lex.isClear()) return
+	if (lex.opacity == 0) return
 	this.fg = colors.white
 	this.bg = colors.black
 	this.char = " "
diff --git a/js/ui/canvas.js b/js/ui/canvas.js
index 7e85fcf..1ee6e1c 100644
--- a/js/ui/canvas.js
+++ b/js/ui/canvas.js
@@ -5,15 +5,16 @@ var canvas = (function(){
 
 	var exports = new Matrix (cols, rows, function(x,y){
 		var lex = new Lex (x,y)
-//		lex.build()
+		lex.build()
 		return lex
 	})
 
   exports.bind = function(){
+		var last_point = [0,0]
   	exports.forEach(function(lex, x, y){
   		if (lex.bound) return
   		lex.bound = true
-
+			var point = [x,y]
 			lex.span.addEventListener('contextmenu', function(e){
 				e.preventDefault()
 			})
@@ -23,13 +24,17 @@ var canvas = (function(){
 				if (drawing) {
 					erasing = (e.which == "3" || e.ctrlKey)
 					draw(lex, x, y, erasing)
+					last_point[0] = x
+					last_point[1] = y
 				}
 				lex.focus()
 			})
 			lex.span.addEventListener("mousemove", function(){
 				if (! dragging) return
 				if (drawing) {
-					draw(lex, x, y, erasing)
+					line(lex, last_point, point, erasing)
+					last_point[0] = x
+					last_point[1] = y
 				}
 				lex.focus()
 			})
diff --git a/js/ui/palette.js b/js/ui/palette.js
index 605c08b..2a648a8 100644
--- a/js/ui/palette.js
+++ b/js/ui/palette.js
@@ -1,10 +1,9 @@
 var palette = (function(){
-console.log("hi")
+
 	var palette = new Matrix (32, 2, function(x,y){
 		var lex = new Lex (x,y)
 		lex.bg = hue(x>>1)
 		lex.build()
-		console.log(lex.bg, lex.css())
 		return lex
 	})
 
-- 
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