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main.js
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main.js
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var selectPreset = function(id) {
var input = document.getElementById("behavior");
switch (id) {
case "sinwave":
input.value = "\
{\n\
path: function(x) {\n\
var y = 0;\n\
y = 50 * Math.sin(x / 100);\n\
return y;\n\
},\n\
speed: function() {\n\
return 2 + (Math.random() * 4);\n\
},\n\
offset: function() {\n\
return 0;\n\
},\n\
backgroundColor: 'white',\n\
color: function() {\n\
return 'red';\n\
},\n\
size: 10,\n\
count: 100,\n\
placement: 'random',\n\
}"
break;
case "ocean":
input.value = "\
{\n\
path: function(x) {\n\
var y = 0;\n\
y = 50 * Math.sin(x / 100);\n\
return y;\n\
},\n\
speed: function() {\n\
return 2 + (Math.random() * 4);\n\
},\n\
offset: function() {\n\
return (Math.random() * 3) - 1.5;\n\
},\n\
backgroundColor: 'rgba(52, 152, 219, 1.0)',\n\
color: function() {\n\
var rn = Math.random();\n\
if (rn < 0.2) {\n\
return 'rgba(255, 255, 255, 1.0)';\n\
} else if (rn < 0.4) {\n\
return 'rgba(255, 255, 255, 0.6)';\n\
} else if (rn < 0.6) {\n\
return 'rgba(41, 128, 185,1.0)';\n\
} else if (rn < 0.8) {\n\
return 'rgba(26, 188, 156,1.0)';\n\
} else {\n\
return 'rgba(46, 204, 113,1.0)';\n\
}\n\
},\n\
size: 3,\n\
count: 2000,\n\
placement: 'random'\n\
}"
break;
case "blackhole":
input.value = "\
{\n\
path: function(x) {\n\
var y = 0;\n\
return y;\n\
},\n\
speed: function() {\n\
return 2 + (Math.random() * 4);\n\
},\n\
offset: function() {\n\
return (Math.random() * 2) - 1;\n\
},\n\
backgroundColor: 'black',\n\
color: function() {\n\
var rn = Math.random();\n\
if (rn < 0.2) {\n\
return 'rgba(255, 255, 255, 1.0)';\n\
} else if (rn < 0.4) {\n\
return 'rgba(255, 255, 255, 0.6)';\n\
} else if (rn < 0.6) {\n\
return 'rgba(255, 255, 255, 0.2)';\n\
} else if (rn < 0.8) {\n\
return 'rgba(243, 156, 18, 1.0)';\n\
} else {\n\
return 'rgba(243, 156, 18, 0.6)';\n\
}\n\
},\n\
size: 1,\n\
count: 5000,\n\
placement: 'random',\n\
blackHole: {\n\
x: 0.5,\n\
y: 0.5,\n\
radius: 150,\n\
strength: 0.1\n\
}\n\
}"
}
}
var submitBehavior = function() {
var input = document.getElementById("behavior");
var form = document.getElementById("form");
var canvas = document.getElementById("canvas");
var script = document.createElement("script");
script.id = "dynamicscript";
script.type = "text/javascript";
script.text = "Particles.init('particles');\n" +
"Particles.behavior(" + input.value + ");" +
"Particles.start();";
form.style = "display: none;";
canvas.style = "display: block;";
document.body.appendChild(script);
}
var returnToMenu = function() {
var form = document.getElementById("form");
var canvas = document.getElementById("canvas");
var script = document.getElementById("dynamicscript");
Particles.stop();
canvas.style = "display: none;";
form.style = "display: block;";
document.body.removeChild(script);
}
// Particles.init('particles');
// Particles.behavior({
// path: function(x) {
// var y = 0;
// y = 300 + (50 * Math.sin(x / 100));
// return y;
// },
// speed: function() {
// return 2 + (Math.random() * 4);
// },
// offset: function() {
// return (Math.random() * 2) - 1;
// },
// color: function() {
// var rn = Math.random();
// if (rn < 0.1) {
// return 'rgba(255, 255, 255, 1.0)';
// } else if (rn < 0.2) {
// return 'rgba(255, 255, 255, 0.8)';
// } else if (rn < 0.3) {
// return 'rgba(255, 255, 255, 0.6)';
// } else if (rn < 0.4) {
// return 'rgba(255, 255, 255, 0.4)';
// } else if (rn < 0.5) {
// return 'rgba(255, 255, 255, 0.2)';
// } else if (rn < 0.6) {
// return 'rgba(243, 156, 18, 1.0)';
// } else if (rn < 0.7) {
// return 'rgba(243, 156, 18, 0.8)';
// } else if (rn < 0.8) {
// return 'rgba(243, 156, 18, 0.6)';
// } else if (rn < 0.9) {
// return 'rgba(243, 156, 18, 0.4)';
// } else {
// return 'rgba(243, 156, 18, 0.2)';
// }
// },
// count: 5000,
// placement: 'random',
// blackHole: {
// x: 0.5,
// y: 0.5,
// r: 150
// }
// });
// Particles.start();