56 lines
1.2 KiB
JavaScript
56 lines
1.2 KiB
JavaScript
var ease = require('./easing.js').ease
|
||
var resolution = 30;
|
||
|
||
exports.Anim = function(universe) {
|
||
this.universe = universe;
|
||
this.fx_stack = [];
|
||
this.add = function(to, duration, options) {
|
||
var options = options || {};
|
||
options['easing'] = options['easing'] || 'linear';
|
||
this.fx_stack.push({'to': to, 'duration': duration, 'options': options});
|
||
return this;
|
||
}
|
||
this.delay = function(duration) {
|
||
return this.add({}, duration);
|
||
}
|
||
this.run = function(onFinish) {
|
||
var config = {}
|
||
, t = 0
|
||
, d = 0
|
||
, a
|
||
;
|
||
|
||
var fx_stack = this.fx_stack;
|
||
var ani_setup = function() {
|
||
a = fx_stack.shift();
|
||
t = 0;
|
||
d = a.duration;
|
||
config = {}
|
||
for(var k in a.to) {
|
||
config[k] = {
|
||
'start': universe.get(k),
|
||
'end': a.to[k]
|
||
}
|
||
}
|
||
}
|
||
var ani_step = function() {
|
||
new_vals = {};
|
||
for(var k in config) {
|
||
new_vals[k] = Math.round(config[k].start + ease['linear'](t, 0, 1, d) * (config[k].end - config[k].start))
|
||
}
|
||
t = t + resolution;
|
||
universe.update(new_vals);
|
||
if(t > d) {
|
||
if(fx_stack.length > 0) {
|
||
ani_setup()
|
||
} else {
|
||
clearInterval(iid);
|
||
if(onFinish) onFinish();
|
||
}
|
||
}
|
||
}
|
||
ani_setup();
|
||
var iid = setInterval(ani_step, resolution);
|
||
}
|
||
}
|
||
|