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Code Issues Releases Wiki Activity

remove unused code-blast

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This commit is contained in:
Kushagra Gour 2018-10-25 15:38:23 +05:30
parent d4dd5b5015
commit 247fcaccc1
1 changed files with 0 additions and 222 deletions
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src/lib/code-blast.js
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@ -1,222 +0,0 @@
/*
Based on Joel Besada's lovely experiment
https://twitter.com/JoelBesada/status/670343885655293952
*/
;(function () {
var shakeTime = 0,
shakeTimeMax = 0,
shakeIntensity = 5,
lastTime = 0,
particles = [],
particlePointer = 0,
MAX_PARTICLES = 100,
PARTICLE_NUM_RANGE = { min: 2, max: 7 },
PARTICLE_GRAVITY = 0.08,
PARTICLE_ALPHA_FADEOUT = 0.96,
PARTICLE_VELOCITY_RANGE = {
x: [-1, 1],
y: [-3.5, -1.5]
},
w = window.innerWidth,
h = window.innerHeight,
effect,
isActive = false;
var codemirrors = [], cmNode;
var canvas, ctx;
var current_time, dt, magnitude, shakeX, shakeY; // loop vars
var throttledShake = throttle(shake, 100);
var throttledSpawnParticles = throttle(spawnParticles, 100);
function getRGBComponents(node) {
var color = getComputedStyle(node).color;
if (color) {
try {
return color.match(/(\d+), (\d+), (\d+)/).slice(1);
} catch(e) {
return [255, 255, 255];
}
} else {
return [255, 255, 255];
}
}
function spawnParticles(cm, type) {
var cursorPos = cm.getCursor();
var pos = cm.cursorCoords();
var node = document.elementFromPoint(pos.left - 5, pos.top + 5);
type = cm.getTokenAt(cursorPos);
if (type) { type = type.type; };
var numParticles = random(PARTICLE_NUM_RANGE.min, PARTICLE_NUM_RANGE.max);
var color = getRGBComponents(node);
for (var i = numParticles; i--;) {
particles[particlePointer] = createParticle(pos.left + 10, pos.top, color);
particlePointer = (particlePointer + 1) % MAX_PARTICLES;
}
}
function createParticle(x, y, color) {
var p = {
x: x,
y: y + 10,
alpha: 1,
color: color
};
if (effect === 1) {
p.size = random(2, 4);
p.vx = PARTICLE_VELOCITY_RANGE.x[0] + Math.random() *
(PARTICLE_VELOCITY_RANGE.x[1] - PARTICLE_VELOCITY_RANGE.x[0]);
p.vy = PARTICLE_VELOCITY_RANGE.y[0] + Math.random() *
(PARTICLE_VELOCITY_RANGE.y[1] - PARTICLE_VELOCITY_RANGE.y[0]);
} else if (effect === 2) {
p.size = random(2, 8);
p.drag = 0.92;
p.vx = random(-3, 3);
p.vy = random(-3, 3);
p.wander = 0.15;
p.theta = random(0, 360) * Math.PI / 180;
}
return p;
}
function effect1(particle) {
particle.vy += PARTICLE_GRAVITY;
particle.x += particle.vx;
particle.y += particle.vy;
particle.alpha *= PARTICLE_ALPHA_FADEOUT;
ctx.fillStyle = 'rgba('+ particle.color[0] +','+ particle.color[1] +','+ particle.color[2] + ',' + particle.alpha + ')';
ctx.fillRect(Math.round(particle.x - 1), Math.round(particle.y - 1), particle.size, particle.size);
}
// Effect based on Soulwire's demo: http://codepen.io/soulwire/pen/foktm
function effect2(particle) {
particle.x += particle.vx;
particle.y += particle.vy;
particle.vx *= particle.drag;
particle.vy *= particle.drag;
particle.theta += random( -0.5, 0.5 );
particle.vx += Math.sin( particle.theta ) * 0.1;
particle.vy += Math.cos( particle.theta ) * 0.1;
particle.size *= 0.96;
ctx.fillStyle = 'rgba('+ particle.color[0] +','+ particle.color[1] +','+ particle.color[2] + ',' + particle.alpha + ')';
ctx.beginPath();
ctx.arc(Math.round(particle.x - 1), Math.round(particle.y - 1), particle.size, 0, 2 * Math.PI);
ctx.fill();
}
function drawParticles(timeDelta) {
var particle;
for (var i = particles.length; i--;) {
particle = particles[i];
if (!particle || particle.alpha < 0.01 || particle.size <= 0.5) { continue; }
if (effect === 1) { effect1(particle); }
else if (effect === 2) { effect2(particle); }
}
}
function shake(editor, time) {
cmNode = editor.getWrapperElement();
shakeTime = shakeTimeMax = time;
}
function random(min, max) {
if (!max) { max = min; min = 0; }
return min + ~~(Math.random() * (max - min + 1))
}
function throttle (callback, limit) {
var wait = false;
return function () {
if (!wait) {
callback.apply(this, arguments);
wait = true;
setTimeout(function () {
wait = false;
}, limit);
}
}
}
function loop() {
if (!isActive) { return; }
ctx.clearRect(0, 0, w, h);
// get the time past the previous frame
current_time = new Date().getTime();
if(!lastTime) lastTime = current_time;
dt = (current_time - lastTime) / 1000;
lastTime = current_time;
if (shakeTime > 0) {
shakeTime -= dt;
magnitude = (shakeTime / shakeTimeMax) * shakeIntensity;
shakeX = random(-magnitude, magnitude);
shakeY = random(-magnitude, magnitude);
cmNode.style.transform = 'translate(' + shakeX + 'px,' + shakeY + 'px)';
}
drawParticles();
requestAnimationFrame(loop);
}
function onCodeMirrorChange(editor, change) {
if (change.origin !== '+input' && change.origin !== '+delete') { return; }
if (editor.getOption('blastCode') === true || editor.getOption('blastCode').shake === undefined) {
throttledShake(editor, 0.3);
}
throttledSpawnParticles(editor);
}
function init(editor) {
isActive = true;
if (!canvas) {
canvas = document.createElement('canvas');
ctx = canvas.getContext('2d'),
canvas.id = 'code-blast-canvas'
canvas.style.position = 'absolute';
canvas.style.top = 0;
canvas.style.left = 0;
canvas.style.zIndex = 1;
canvas.style.pointerEvents = 'none';
canvas.width = w;
canvas.height = h;
document.body.appendChild(canvas);
loop();
}
editor.on("change", onCodeMirrorChange);
}
function destroy(editor) {
editor.off('change', onCodeMirrorChange);
codemirrors.splice(codemirrors.indexOf(editor), 1);
if (!codemirrors.length) {
isActive = false;
if (canvas) {
canvas.remove();
canvas = null;
}
}
}
CodeMirror.defineOption('blastCode', false, function(editor, val, old) {
if (val) {
codemirrors.push(editor);
effect = val.effect || 2;
init(editor);
} else {
destroy(editor);
}
});
})();