From 671d527a5960f08680a0ff70ee5745068054b2ea Mon Sep 17 00:00:00 2001
From: Lewis Hemens <lewis@hemens.co.uk>
Date: Tue, 25 Mar 2014 22:32:44 +0000
Subject: [PATCH] Fixed off the edge of the screen bug

---
 js-compiled.js |  6 +++++-
 js-lib/view.js | 10 +++++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/js-compiled.js b/js-compiled.js
index dd5b9b5..49e6745 100644
--- a/js-compiled.js
+++ b/js-compiled.js
@@ -58,7 +58,7 @@ function ea(a, b) {
   this.canvas = document.getElementById("ascii-canvas");
   this.context = this.canvas.getContext("2d");
   this.zoom = 1;
-  this.offset = new l(7500, 7500);
+  this.offset = new l(9E3, 5100);
   this.d = !0;
   this.s = !1;
   A(this);
@@ -84,6 +84,10 @@ function fa(a) {
   b.scale(a.zoom, a.zoom);
   b.translate(a.canvas.width / 2 / a.zoom, a.canvas.height / 2 / a.zoom);
   var c = n(B(a, new l(0, 0)), new l(3, 3)), d = B(a, new l(a.canvas.width, a.canvas.height)).add(new l(3, 3));
+  c.x = Math.max(0, Math.min(c.x, 2E3));
+  d.x = Math.max(0, Math.min(d.x, 2E3));
+  c.y = Math.max(0, Math.min(c.y, 600));
+  d.y = Math.max(0, Math.min(d.y, 600));
   b.lineWidth = "1";
   b.strokeStyle = "#EEEEEE";
   b.beginPath();
diff --git a/js-lib/view.js b/js-lib/view.js
index 6f6d767..0eacc59 100644
--- a/js-lib/view.js
+++ b/js-lib/view.js
@@ -11,7 +11,10 @@ ascii.View = function(state) {
   /** @type {Object} */ this.context = this.canvas.getContext('2d');
 
   /** @type {number} */ this.zoom = 1;
-  /** @type {ascii.Vector} */ this.offset = new ascii.Vector(7500, 7500);
+  /** @type {ascii.Vector} */ this.offset = new ascii.Vector(
+      MAX_GRID_WIDTH * CHAR_PIXELS_H / 2,
+      MAX_GRID_HEIGHT * CHAR_PIXELS_V / 2);
+
   /** @type {boolean} */ this.dirty = true;
   // TODO: Should probably save this setting in a cookie or something.
   /** @type {boolean} */ this.useLines = false;
@@ -70,6 +73,11 @@ ascii.View.prototype.render = function() {
       .add(new ascii.Vector(
       RENDER_PADDING_CELLS, RENDER_PADDING_CELLS));
 
+  startOffset.x = Math.max(0, Math.min(startOffset.x, MAX_GRID_WIDTH));
+  endOffset.x = Math.max(0, Math.min(endOffset.x, MAX_GRID_WIDTH));
+  startOffset.y = Math.max(0, Math.min(startOffset.y, MAX_GRID_HEIGHT));
+  endOffset.y = Math.max(0, Math.min(endOffset.y, MAX_GRID_HEIGHT));
+
   // Render the grid.
   context.lineWidth = '1';
   context.strokeStyle = '#EEEEEE';