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first version with license
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@loufranco
loufranco committed Dec 5, 2011
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30 changes: 30 additions & 0 deletions asciimatic-drawing-sample.html
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<html>
<!--
ASCIIMatic Drawing
Copyright (c) Lou Franco. All rights reserved.
The use and distribution terms for this software are covered by the
Common Public License 1.0 (http://opensource.org/licenses/cpl.php)
Current source can be found here: https://github.com/loufranco/asciimatic-scripts
By using this software in any fashion, you are agreeing to be bound by
the terms of this license.
You must not remove this notice, or any other, from this software.
-->
<head>
<script src="asciimatic-drawing.js"></script>
</head>
<body>
<div id="drawing"></div>
<script type="text/javascript">
var screen = new AsciiScreen();
screen.drawLine(0,0, 10, 10);
screen.fillRect(12,2, 6,6,'*');
screen.drawHLine(20,5,10);
screen.drawVLine(30,10,5);
screen.drawRect(37,5,5,5);
screen.drawHString(37,12,"Hello");
screen.paintOnto(document.getElementById('drawing'));
</script>
</body>
</html>
15 changes: 15 additions & 0 deletions asciimatic-drawing-sample.txt
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+
|
| +----+
| |****|
| |****|
+---------+ |****| +--------+ +---+
| |****| | |
| +----+ | |
| | |
| +---+
+ +
|
| Hello
|
+
234 changes: 234 additions & 0 deletions asciimatic-drawing.js
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// ASCIIMatic Drawing
// Copyright (c) Lou Franco. All rights reserved.
//
// Current source can be found here: https://github.com/loufranco/asciimatic-scripts
// By using this software in any fashion, you are agreeing to be bound by
// the terms of this license.
//
// You must not remove this notice, or any other, from this software.
// The use and distribution terms for this software are covered by the
// BSD 3 Clause License
//
// Copyright (c) 2011, Lou Franco
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// Redistributions of source code must retain the above copyright notice, this list of conditions and the
// following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
// following disclaimer in the documentation and/or other materials provided with the distribution.
//
// Neither the name of the owner, Lou Franco, or ASCIIMatic nor the names of its contributors may be used to endorse or
// promote products derived from this software without specific prior written permission.
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
// USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

function AsciiScreen () {
this._screenData = new Array();
this._fontSize = 10;
this._width = 0;
}

AsciiScreen.prototype.clear = function() {
this._screenData = new Array();
this._width = 0;
}

AsciiScreen.prototype.getRow = function(y) {
var row = this._screenData[y];
if (!row) {
this._screenData[y] = new Array();
}
return this._screenData[y];
}

AsciiScreen.prototype.getWidth = function() {
return this._width;
}

AsciiScreen.prototype.updateWidth = function(w) {
if (w > this._width) this._width = w;
}

AsciiScreen.prototype.getHeight = function() {
return this._screenData[y].length;
}

AsciiScreen.prototype.drawLine = function(x1, y1, x2, y2) {
x1 = Math.round(x1);
y1 = Math.round(y1);
x2 = Math.round(x2);
y2 = Math.round(y2);

if (y1==y2) {
if (x2 > x1)
this.drawHLine(x1, y1, x2-x1+1);
else
this.drawHLine(x2, y1, x1-x2+1);
return;
} else if (x1==x2) {
if (y2 > y1)
this.drawVLine(x1, y1, y2-y1+1);
else
this.drawVLine(x1, y2, y1-y2+1);
return;
} else {
if (Math.abs(x2-x1) > Math.abs(y2-y1))
this.drawRectLine(x1, y1, x2, y2, '-', '-');
else
this.drawRectLine(x1, y1, x2, y2, '|', '|');
}
}

AsciiScreen.prototype.drawHLine = function (x, y, len) {
x = Math.round(x);
y = Math.round(y);

if (len < 0) {
len = -len;
x -= len;
}
var row = this.getRow(y);
row[x] = '+';
for (var i = x+1; i < x+len-1; ++i) {
if (row[i] != '+')
row[i] = '-';
}
row[x+len-1] = '+';
this.updateWidth(row.length);
}

AsciiScreen.prototype.drawVLine = function (x, y, len) {
x = Math.round(x);
y = Math.round(y);

if (len < 0) {
len = -len;
y -= len;
}
var row = this.getRow(y);
row[x] = '+';
for (var i = y+1; i < y+len-1; ++i) {
row = this.getRow(i);
if (row[x] != '+')
row[x] = '|';
}
this.getRow(y+len-1)[x] = '+';
this.updateWidth(x+1);
}

AsciiScreen.prototype.drawRect = function(x, y, w, h) {
this.drawHLine(x, y, w);
this.drawHLine(x, y+h-1, w);
this.drawVLine(x, y, h);
this.drawVLine(x+w-1, y, h);
}

AsciiScreen.prototype.drawRectLine = function(x1, y1, x2, y2, sdir, edir) {
x1 = Math.round(x1);
y1 = Math.round(y1);
x2 = Math.round(x2);
y2 = Math.round(y2);

if (x1==x2 || y1==y2) {
this.drawLine(x1, y1, x2, y2);
return;
}

if (sdir == edir) {
if (sdir =='-') {
var halfLen = (x2-x1)/2;
this.drawLine(x1, y1, x1+halfLen, y1);
this.drawLine(x1+halfLen, y1, x1+halfLen, y2);
this.drawLine(x1+halfLen, y2, x2, y2);
} else {
var halfLen = (y2-y1)/2;
this.drawLine(x1, y1, x1, y1+halfLen);
this.drawLine(x1, y1+halfLen, x2, y1+halfLen);
this.drawLine(x2, y1+halfLen, x2, y2);
}
} else {
if (sdir == '-') {
this.drawLine(x1, y1, x2, y1);
this.drawLine(x2, y1, x2, y2);
} else {
this.drawLine(x1, y1, x1, y2);
this.drawLine(x1, y2, x2, y2);
}
}

}

AsciiScreen.prototype.fillRect = function(x, y, w, h, fillChar) {
if (!fillChar) fillChar = ' ';
this.drawRect(x, y, w, h);
for (var i = y+1; i < y+h-1; ++i) {
row = this.getRow(i);
for (var j = x+1; j < x+w-1; ++j) {
row[j] = fillChar;
}
}
}

AsciiScreen.prototype.drawHString = function(x, y, s) {
x = Math.round(x);
y = Math.round(y);

var row = this.getRow(y);
var l = s.length;
for (var i = 0; i < l; ++i) {
row[x+i] = s[i];
}
this.updateWidth(x+l);
}

AsciiScreen.prototype.getCharAt = function(x, y) {
var row = this.getRow(y);
var c = row[x];
if (c) {
return c;
}
return ' ';
}

AsciiScreen.prototype.putChar = function(x, y, c) {
x = Math.round(x);
y = Math.round(y);

this.getRow(y)[x] = c;
this.updateWidth(x+1);
}

AsciiScreen.prototype.getHeight = function() {
return this._screenData.length;
}

AsciiScreen.prototype.getRowWidth = function(y) {
return this.getRow(y).length;
}

AsciiScreen.prototype.paintOnto = function(el) {
var s = "<pre style='font-family:courier;font-size:"+
this._fontSize+"px;line-height:"+(this._fontSize)+"px'>";
var h = this.getHeight();

for (var y = 0; y<h; ++y) {
var w = this.getRowWidth(y);
for (var x = 0; x<w; ++x) {
s += this.getCharAt(x, y);
}
s += "\n";
}
s += "</pre>";
el.innerHTML = s;
}

26 changes: 26 additions & 0 deletions license.txt
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You must not remove this notice, or any other, from this software.
The use and distribution terms for this software are covered by the
BSD 3 Clause License

Copyright (c) 2011, Lou Franco
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the
following disclaimer.

Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other materials provided with the distribution.

Neither the name of the owner, Lou Franco, or ASCIIMatic nor the names of its contributors may be used to endorse or
promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
3 changes: 3 additions & 0 deletions readme.txt
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asciimatic-drawing.js: An ASCII drawing surface for HTML with line, rect, and text drawing functions
asciimatic-drawing-sample.html: A sample HTML file
asciimatic-drawing-sample.txt: The output of the sample HTML

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