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sillysvg.js
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sillysvg.js
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var values = function (object) {
var result = [];
for (var key in object)
result.push(object[key]);
return result;
}
var keys = function (object) {
var result = [];
for (var key in object)
result.push(key);
return result;
}
String.prototype.format = function() {
var args = arguments;
return this.replace(/{(\d+)}/g, function(match, number) {
return typeof args[number] != 'undefined' ? args[number] : '{' + number + '}';
});
};
String.prototype.capitalize = function() {
if(this.length > 0) {
return this[0].toUpperCase() + this.substring(1);
}
return "";
}
String.prototype.camelCase = function() {
var first = true;
var s = "";
var tokens = this.split("-");
for(var i in tokens) {
if(first)
s += tokens[i];
else
s += tokens[i].capitalize();
first = false;
}
return s;
}
function defaults(defaults, dvalues) {
var v = {};
for(var i in defaults)
v[i] = defaults[i];
for(var i in dvalues)
v[i] = dvalues[i];
return v;
}
var Transform = function(svgobject) {
this.svgobject = svgobject;
this.x = 0;
this.y = 0;
this.rotation = 0;
this.scale = 1;
}
Transform.prototype.translate = function(x, y) {
this.x = x;
this.y = y;
this.svgobject.element.setAttribute("transform", this.toString());
return this.svgobject;
}
Transform.prototype.rotate = function(rotation) {
this.rotation = rotation;
this.svgobject.element.setAttribute("transform", this.toString());
return this.svgobject;
}
Transform.prototype.scale = function(scale) {
this.scale = scale;
this.svgobject.element.setAttribute("transform", this.toString());
return this.svgobject;
}
Transform.prototype.toString = function() {
return "translate({0} {1}) rotate({2}) scale({3})".format(this.x, this.y, this.rotation, this.scale);
}
var SVGObject = function(type) {
this.element = document.createElementNS("https://www.w3.org/2000/svg", "svg:"+type);
this.transform = new Transform(this);
if(type == "path")
this.d = new PathData(this);
if(type == "polyline")
this.points = new Points(this);
}
SVGObject.prototype.attr = function(attr) {
for(var i in attr)
this.element.setAttribute(i, attr[i]);
return this;
}
SVGObject.prototype.append = function(svgobject) {
this.element.appendChild(svgobject.element);
svgobject.parent = this;
return svgobject
}
SVGObject.prototype.textNode = function(text) {
var e = this.element.appendChild(document.createTextNode(text));
return e;
}
var SVG = function(attributes) {
this.svgobject = new SVGObject("svg")
this.svgobject.attr(defaults({width:"100%", height:"100%", version:"1.1"}, attributes));
document.body.appendChild(this.svgobject.element);
document.addEventListener("mousemove", function(evt) {
});
document.addEventListener("mouseup", function(evt) {
});
}
SVG.prototype.append = function(svgobject) {
this.svgobject.append(svgobject);
svgobject.parent = this;
return svgobject
}
var PathData = function(svgobject) {
this.svgobject = svgobject;
this.type = "S";
this.points = new Array();
}
PathData.prototype.add = function(x,y) {
this.points.push([x,y]);
return this.svgobject;
}
PathData.prototype.update = function() {
if(this.points.length < 3) return;
var d = "";
for(var i in this.points) {
p = this.points[i];
d += d==""?"M {0},{1} {2}".format(p[0], p[1],this.type):" {0},{1}".format(p[0], p[1]);
}
this.svgobject.attr({d:d});
return this.svgobject;
}
var Points = function(svgobject) {
this.svgobject = svgobject;
this.points = new Array();
}
Points.prototype.add = function(x,y) {
this.points.push([x,y]);
return this.svgobject;
}
Points.prototype.update = function() {
if(arguments.length > 0) this.points = arguments;
var p = values(this.points);
this.svgobject.attr({points:p.join(" ")});
return this.svgobject;
}
var initSillySVG = function() {
var elements = "defs, desc, g, metadata, svg, symbol, title, use, style, a, switch, circle, ellipse, line, path, polygon, polyline, rect, image, altGlyph, altGlyphDef, altGlyphItem, glyphRef, text, textPath, tref, tspan, linearGradient, radialGradient, stop, pattern, clipPath, mask, definition-src, font, font-face, font-face-format, font-face-name, font-face-src, font-face-uri, glyph, hkern, missing-glyph, vkern, script, feBlend, feColorMatrix, feComponentTransfer, feComposite, feFlood, feGaussianBlur, feImage, feMerge, feMergeNode, feOffset, feTile, feFuncR, feFuncG, feFuncB, feFuncA, filter, animate, animateColor, animateMotion, animateTransform, mpath, set".split(", ");
for(var i in elements) {
eval("SVGObject.prototype.{0} = SVG.prototype.{0} = function(attr) { var s = new SVGObject('{1}'); s.attr(attr); this.append(s); return s; }".format(elements[i].camelCase(), elements[i]));
}
}
initSillySVG();
initSillySVG = undefined;