Created pommicket.github.io

1 files changed, 265 insertions, 0 deletions

diff --git a/js/AutoVideos.js b/js/AutoVideos.js
new file mode 100644
index 0000000..bd3a744
--- /dev/null
+++ b/js/AutoVideos.js
@@ -0,0 +1,265 @@
+
+var single = ["Math.sqrt", "Math.cos", "Math.sin"]; //Operations on a single number
+var singleweights = {};
+var binary = ["*", "+", "-", "/"]; //Operations for 2 numbers
+var binaryweights = {};
+var varlist = ["x", "y", "t"];
+var numlist = ["Constant"];
+numlist = numlist.concat(varlist);
+var numberweights = {"Constant":1};
+var numberweight;
+var singleweight;
+var eqlength;
+var functionp = document.getElementById('Function');
+var notify;
+
+for(var i = 0; i < single.length; i++)
+{
+	singleweights[single[i]] = 1;
+}
+
+for(var i = 0; i < binary.length; i++)
+{
+	binaryweights[binary[i]] = 1;
+}
+
+for(var i = 0; i < varlist.length; i++)
+{
+	numberweights[varlist[i]] = 1;
+}
+
+function rmvmath(str)
+{
+	//A function that removes all the Math.'s in a string
+	var newstr = '';
+	for(var i = 0; i < str.length - 5; i++)
+	{
+		if(str[i] + str[i+1] + str[i+2] + str[i+3] + str[i+4] !== 'Math.')
+		{
+			newstr += str[i]
+		}
+		else
+		{
+			i += 4;
+		}
+	}
+	return newstr;
+};
+
+function randItem(l)
+{
+	return l[Math.floor(Math.random() * l.length)];
+};
+
+function countChar(string, letter)
+{
+	var amount = 0;
+	for (var i = 0; i < string.length; i++)
+	{
+		if (string[i] == letter)
+		{
+			amount++;
+		}
+	}
+	return amount;
+};
+
+
+function randEquation()
+{
+	var hasx = false;
+    var hasy = false;
+	var hast = false;
+	var equation;
+	var lasttype;
+	var thistype;
+	var chanceend;
+	var length;
+	var what;
+	var number;
+
+
+    while (!(hasx && hasy && hast))
+	{
+        //Types: b for binary, s for single, f for first, n for number
+        equation = '';
+        lasttype = 'f';
+        thistype = 0;
+        hasx = false;
+        hasy = false;
+		hast = false;
+        chanceend = 0;
+        length = 1; //Number of operations done so far
+
+        while (true)
+		{
+            chanceend = Math.pow((1.0 - (1.0 / length)), eqlength);
+            if (lasttype == 'n')
+			{
+                number = Math.random();
+                if (number < chanceend)
+				{
+                    break;
+				}
+                equation = '(' + equation + ')' + randItem(binary);
+                lasttype = 'b';
+			}
+            else if (lasttype == 's' || lasttype == 'b' || lasttype == 'f')
+			{
+                equation += '(';
+                thistype = Math.random();
+                if (thistype < singleweight / (singleweight + numberweight))
+				{
+                    equation += randItem(single);
+                    lasttype = 's';
+				}
+                else
+				{
+                    what = randItem(numlist);
+                    if (what == 'Constant')
+					{
+                        equation += (Math.random(100, 200)).toString();
+					}
+                    else
+					{
+                        equation += what;
+                        if (what == 'x')
+						{
+                            hasx = true;
+						}
+                        else if (what == 'y')
+						{
+                            hasy = true;
+						}
+						else if (what == 't')
+						{
+							hast = true;
+						}
+					}
+                    lasttype = 'n';
+                    equation += ')';
+				}
+			}
+            length++;
+		}
+	}
+    while (countChar(equation, '(') > countChar(equation, ')'))
+	{
+        equation += ')';
+	}
+    return equation;
+};
+
+function evalEquation(eq, x, y, t)
+{
+	try
+	{
+		eval('var result = ' + eq);
+		return result;
+	}
+	catch(err)
+	{
+		return 0;
+	}
+};
+function create()
+{
+	var d = new Date();
+	var start = d.getTime();
+	var xsize;
+	var ysize;
+	var length;
+	var framerate;
+
+	var form = document.getElementById('Options');
+
+	var errtag = document.getElementById('Error');
+	errtag.innerHTML = '';
+
+	for (var i = 0; i < form.elements.length; i++)
+	{
+		if (form.elements[i].value == '')
+		{
+			errtag.innerHTML = 'Please enter a valid number.';
+			return;
+		}
+	}
+
+	xsize = parseInt(form.elements[1].value);
+	ysize = parseInt(form.elements[2].value);
+	length = parseFloat(form.elements[3].value);
+	framerate = parseInt(form.elements[4].value);
+	notify = form.elements[5].checked;
+
+	singleweight = parseFloat(form.elements[7].value);
+	numberweight = parseFloat(form.elements[8].value);
+	eqlength = parseFloat(form.elements[9].value);
+
+	var requation = randEquation();
+	var gequation = randEquation();
+	var bequation = randEquation();
+	var x;
+	var y;
+	var r;
+	var g;
+	var b;
+	var encoder = new Whammy.Video(framerate);
+	var video = document.getElementById('Video');
+	var canvas = document.getElementById('Canvas');
+	video.width = xsize;
+	video.height = ysize;
+	canvas.width = xsize;
+	canvas.height = ysize;
+	var ctx = canvas.getContext('2d');
+	var apx = ctx.getImageData(0, 0, xsize, ysize);
+	var data = apx.data;
+
+
+	eval(
+	'for(var t = 0; t < Math.round(framerate * length); t++)'+
+	'{'+
+	'	for(var i = 0; i < data.length; i+=4)'+
+	'	{'+
+	'		x = (i/4) % xsize;'+
+	'		y = Math.floor((i/4) / xsize);'+
+	'		r = Math.abs(Math.round((' + requation + ') % 255));'+
+	'		g = Math.abs(Math.round((' + gequation + ') % 255));'+
+	'		b = Math.abs(Math.round((' + bequation + ') % 255));'+			
+	'		data[i] = r;'+
+	'		data[i+1] = g;'+
+	'		data[i+2] = b;'+
+	'		data[i+3] = 255;'+
+	'	}'+
+	'	apx.data = data;'+
+	'	ctx.putImageData(apx, 0, 0);'+
+	'	encoder.add(ctx);'+
+	'}'
+	);
+	var output = encoder.compile();
+	var url = webkitURL.createObjectURL(output);
+	video.src = url;
+
+	ctx.drawImage(video, 0, 0);
+	d = new Date();
+	var end = d.getTime();
+	var timeparagraph = document.getElementById('Time');
+	var timetaken = Math.round((end-start)/1000);
+	if (timetaken == 1)
+	{
+		timeparagraph.innerHTML = 'The time it took was 1 second.';
+	}
+	else
+	{
+		timeparagraph.innerHTML = 'The time it took was ' + timetaken + ' seconds.';
+	}
+
+	functionp.innerHTML = '$Functions: \\newline\\newline Red: $' + rmvmath(requation) + '$\\newline\\newline Green: $' + rmvmath(gequation) + '$\\newline\\newline Blue: $' + rmvmath(bequation) + '$';
+	LatexIT.render('*',false);
+
+	if(notify)
+	{
+		alert('Your video has finished.');
+	}
+
+
+};