Monatsarchiv für May 2012

 
 

ztxt code editor

Over a year ago I created a code editor called ztxt for use in my classes. After a semester of use, I decided to start using ztxt as my main editor. It’s still in beta, but it works really nicely. Here is a short video showing how to get started with it:

To showcase ztxt a little more, I recorded this video showing how to make a localStorage based note program:

How many ways can I make a point?

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
 
// how many ways can I make a point?
 
// 1)
function Point(x, y, z) {
  this.x = x;
  this.y = y;
  this.z = z;
}
Point.prototype.offset = function(tx, ty, tz) {
  this.x += tx;
  this.y += ty;
  this.z += tz;
};
Point.prototype.add = function(point) {
  this.offset(point.x, point.y, point.z);
};
Point.prototype.subtract = function(point) {
  this.x -= point.x;
  this.y -= point.y;
  this.z -= point.z;
};
Point.prototype.clone = function() {
  return new Point(this.x, this.y, this.z);
};
 
var one = new Point(10, 10, 10);
 
// 2)
function Point(x, y, z) {
  this.x = x;
  this.y = y;
  this.z = z;
}
Point.prototype = {
  constructor: Point,
  offset: function(tx, ty, tz) {
    this.x += tx;
    this.y += ty;
    this.z += tz;
  },
  add: function(point) {
    this.offset(point.x, point.y, point.z);
  },
  subtract: function(point) {
    this.x -= point.x;
    this.y -= point.y;
    this.z -= point.z;
  },
  clone: function() {
    return new Point(this.x, this.y, this.z);
  }
};
 
var two = new Point(10, 10, 10);
 
// 3)
function Point(x, y, z) {
  this.x = x;
  this.y = y;
  this.z = z;
  this.offset = function(tx, ty, tz) {
    this.x += tx;
    this.y += ty;
    this.z += tz;
  };
  this.add = function(point) {
    this.offset(point.x, point.y, point.z);
  };
  this.subtract = function(point) {
    this.x -= point.x;
    this.y -= point.y;
    this.z -= point.z;
  };
  this.clone = function() {
    return new Point(this.x, this.y, this.z);
  };
}
 
var three = new Point(10, 10, 10);
 
// 4)
function Point(x, y, z) {
  var self = {
    x: x,
    y: y,
    z: z,
    offset: function(tx, ty, tz) {
      self.x += tx;
      self.y += ty;
      self.z += tz;
    },
    add: function(point) {
      self.offset(point.x, point.y, point.z);
    },
    subtract: function(point) {
      self.x -= point.x;
      self.y -= point.y;
      self.z -= point.z;
    },
    clone: function() {
      return Point(self.x, self.y, self.z);
    }
  };
  return self;
};
 
var four = Point(10, 10, 10); // note no new keyword
 
// 5) this is one way to use Object.create() (lots of other ways)
var Point = {
  x: 0,
  y: 0,
  z: 0,
  init: function(x, y, z) {
    this.x = x;
    this.y = y;
    this.z = z;
    return this;
  },
  offset: function(tx, ty, tz) {
    this.x += tx;
    this.y += ty;
    this.z += tz;
  },
  add: function(point) {
    this.offset(point.x, point.y, point.z);
  },
  subtract: function(point) {
    this.x -= point.x;
    this.y -= point.y;
    this.z -= point.z;
  },
  clone: function() {
    return Object.create(Point).init(this.x, this.y, this.z);
  }
};
 
var five = Object.create(Point).init(10, 10, 10);
 
// There are a bunch more ways, especially when you introduce javascript libraries.

New Projects

I have a few new personal projects up and running on github. Have a look:

https://github.com/ZevanRosser

Zapp
Simplified object creation, custom events and deep linking/routing

jquery.select-all
a different kind of javascript templating

OnionSkin
Canvas based animation tool inspired by Flash’s onion skinning

I may create a short video soon that walks through each of these projects.