cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - Activehtmlicon-personicon-teamoctocatspinnerstartv

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              <!-- HTML START -->
	<div class="container">
		<div class="jumbotron">
			<div class="container">
				<h2>SVG manipulate paths</h2>
				<p>I wanted to exercise in manipulating <code>SVG</code> using Javascript. Also I went for a comfortable UI, so I ended up with adding a snap sound which I found on <a href="http://www.freesound.org/people/Snapper4298/sounds/177496/">freesound.org</a>, following the guide I made before: <a href="http://codepen.io/netsi1964/pen/IHwco">Snapshoot sound - snapshoot()</a>
				</p>
			</div>
		</div>
		<div class="row">
			<div class="col-md-6">

				<svg width="500" height="1400">
					<defs>
						<g id="cross">
							<rect x="-5" y="-5" width="10" height="10" fill="none" stroke="#aaa" stroke-width="1px" />
						</g>
						<g id="crossFilled">
							<rect x="-5" y="-5" width="10" height="10" fill="orange" stroke="#aaa" stroke-width="1px" />
						</g>
					</defs>
					<g id="grid"></g>
					<g id="curve"></g>

				</svg>
			</div>
			<div class="col-md-6">
				<h2>Path</h2>
				<pre class="log"></pre>
				<h3>Data</h3>
				<pre class="data"></pre>
			</div>
		</div>
	</div>
	<!-- HTML END  -->
            
          
!
            
              path {
			stroke: orange;
			stroke-width: 3px;
			fill: none;
		}
		
		svg {
			box-shadow: 0 0 2px black;
		}
		
		.gridPath {
			stroke: rgba(0, 0, 200, .4);
			stroke-width: 1px;
			stroke-dasharray: 2, 1;
		}
            
          
!
            
              		/*********** Sound START  ***********/
		// http://stackoverflow.com/questions/1933969/sound-effects-in-javascript-html5
		var camera = ((new Audio()).canPlayType("audio/ogg; codecs=vorbis") === "") ? 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/9729/snap.wav' : 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/9729/snap.ogg';
		var snd = new Audio(camera); // buffers automatically when created
		function snap() {
				snd.play();
			}
			/*********** Sound END  ***********/

		var iPosition = 0;

		function points(iCount, current) {
			if (iCount <= 0) {
				iPosition += 1;
				return current
			};
			if (typeof current !== "undefined") {
				iPosition += 1;
			} else {
				current = ""
			};
			return points(--iCount, current + "%" + iPosition + "% %" + (++iPosition) + "% ")
		}

		function addCommand(sType) {
			var ucCommand = sType.toUpperCase();
			if ("ML".indexOf(ucCommand) > -1) {
				return sType + " " + points(1);
			} else {
				if ("C".indexOf(ucCommand) > -1) {
					return sType + " " + points(3);
				} else {
					if ("Q".indexOf(ucCommand) > -1) {
						return sType + " " + points(2);
					}
				}
			}
		}

		function addCommands(sCommands, data) {
			var d = "";
			for (var i = 0; i < sCommands.length; i++) {
				d += addCommand(sCommands.substr(i, 1))
			}
			var result = {
				"d": d,
				"data": []
			}
			for (var i = 0; i < iPosition; i++) {
				result.data.push((typeof data[i] !== "undefined") ? data[i] : 0)
			}

			return result;
		}


		var cx = 100,
			cy = 250,
			draw = addCommands("MCMCMLQMQL", [185.5,439,14.5,342,78.5,139,178.5,192,189.5,440,342.5,435,292.5,149,181.5,192,176.5,165,135.5,110,120.5,60,45.5,73,383.5,131,219.5,19,209.5,65,186.5,153]),
			curves = [{
				"d": draw.d,
				"init": draw.data
			}],
			curve = "",
			currentCurve = 0,
			$curve = $("#curve"),
			$data = $(".data"),
			$log = $(".log"),
			$grid = $("#grid"),
			active = -1;

		function setActive(a) {
			if (a !== active) {
				snap();
			}
			active = a;
		}

		// Find your root SVG element
		var svg = document.querySelector('svg');

		// Create an SVGPoint for future math
		var pt = svg.createSVGPoint();

		// Get point in global SVG space
		function cursorPoint(evt) {
			return getXY(evt.clientX, evt.clientY, true);
		}

		function getXY(x, y, inverse) {
			pt.x = x;
			pt.y = y;
			return (!!inverse) ? pt.matrixTransform(svg.getScreenCTM().inverse()) : pt;
		}

		function generateCurveData(x, y, activePoint) {
			var curveToDraw = curves[currentCurve];
			var d = curveToDraw.d;
			var sHTML = curveToDraw.d;
			var points = curveToDraw.init;
			var ptno = 0;
			for (var point = 0; point < points.length; point += 2) {
				var px = (ptno === activePoint) ? x : ((typeof points[point] === "undefined") ? 0 : points[point]);
				var py = (ptno === activePoint) ? y : ((typeof points[point + 1] === "undefined") ? 0 : points[point + 1]);
				curveToDraw.init[point] = px;
				curveToDraw.init[point + 1] = py;
				d = d.replace("%" + point + "%", px).replace("%" + (point + 1) + "%", py)
				sHTML = sHTML.replace("%" + point + "%", ((ptno === activePoint) ? "<mark>" : "") + px).replace("%" + (point + 1) + "%", py + ((ptno === activePoint) ? "</mark>" : ""))
				ptno++
			}
			var curveData = {
				"d": d,
				"html": sHTML
			}
			return curveData;
		}

		svg.addEventListener('mousemove', function (evt) {
			var loc = cursorPoint(evt);
			var x = loc.x;
			var y = loc.y;

			if (evt.buttons !== 0 || curve == "") {
				curve = generateCurveData(x, y, active);
			};


			var grid = curve.d.replace(/[^0-9.]/g, " ").split(" ").filter(function (ele) {
				return ele != "";
			});
			var sGrid = "";
			var ptno = 0;
			var path = "";
			var gridPath = "<path class=\"gridPath\" d=\"M %path%\" />";
			for (var point = 0; point < grid.length; point += 2) {
				var pt = getXY(grid[point], grid[point + 1]);
				sGrid += "<use onmousemove=\"setActive(" + ptno + ")\" xlink:href=\"#" + ((ptno == active) ? "crossFilled" : "cross") + "\" x=\"" + pt.x + "\" y=\"" + pt.y + "\"  />\n";
				path += ((ptno === 1) ? "L " : "") + grid[point] + " " + grid[point + 1] + " ";
				ptno++;
			}
			sGrid += gridPath.replace("%path%", path);
			$log.html("&lt;path d=\"" + curve.html + "\" &gt;")
			$grid.html(sGrid);
			$data.text(curves[currentCurve].init);
			$curve.html("<path d=\"" + curve.d + "\" >")
		}, false);

		document.addEventListener("keyup", function (evt) {
			switch (evt.keyCode) {
			case 37: // LEFT
				active--;
				break;
			case 39: // RIGHT
				active++;
				break;
			}
		})
            
          
!
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