示例用法(我想,我需要 @drjerry 的帮助)
我有一个 css3 计时功能,这称为 ease-in-out: cubic-bezier(.42,0,.58,1)
。从图形上看,这看起来像:http ://cubic-bezier.com/#.42,0,.58,1
我想做一个新的计时函数,它只是这张图的下半部分,然后是上半部分。
所以下半部分是ease-in
:cubic-bezier(.42,0,1,1)
。图形化:http ://cubic-bezier.com/#.42,0,1,1
上半部分是ease-out
:cubic-bezier(0,0,.58,1)
。图形化:http ://cubic-bezier.com/#0,0,.58,1
所以现在让我感到困惑的是,根据 iScriptDesign 的脚本,它告诉我它们是不同的。
iScriptDeisgn 说ease-in-out
is (即ease-in
)的前半部分是:cubic-bezier(.21, 0, .355, .25)
. 图形化:http ://cubic-bezier.com/#.21,0,.35,.25
iScriptDeisgn 说ease-in-out
is (即ease-out
) 的结尾部分是: cubic-bezier(.145, .25, .29, .5)
. 图形化:http ://cubic-bezier.com/#.14,.25,.29,.5
为什么iScriptDesign split 函数返回的 and 与 realease-in
和real不同?我不明白。ease-out
ease-in
ease-out
此示例的代码。
//////////////////START FROM ISCRIPTDESIGN
var splitBezier = function(array, perc) {
array.unshift({x:0, y:0});
var coll = [];
while (array.length > 0) {
for (var i = 0;i < array.length-1; i++) {
coll.unshift(array[i]);
array[i] = interpolate(array[i], array[i+1], perc);
}
coll.unshift(array.pop());
}
return {b1: [{x:coll[5].x, y:coll[5].y}, {x:coll[2].x, y:coll[2].y},{x:coll[0].x, y:coll[0].y}]
, b2: [{x:coll[1].x - coll[0].x,y:coll[1].y-coll[0].y}, {x:coll[3].x - coll[0].x,y:coll[3].y-coll[0].y}, {x:coll[6].x - coll[0].x,y:coll[6].y-coll[0].y}]};
}
var interpolate = function (p0, p1, percent) {
if (typeof percent === 'undefined') percent = 0.5;
return {x: p0.x + (p1.x - p0.x) * percent
, y: p0.y + (p1.y - p0.y) * percent};
}
//////////////////END FROM ISCRIPTDESIGN
var coord = function (x,y) {
if(!x) var x=0;
if(!y) var y=0;
return {x: x, y: y};
}
var easeInOut = [new coord(.42,0), new coord(.58,1), new coord(1,1)];
var split50percent = splitBezier(easeInOut.slice(), .5);
所以split50percent
设置为:
({
b1: [{
x: 0.21,
y: 0
}, {
x: 0.355,
y: 0.25
}, {
x: 0.5,
y: 0.5
}],
b2: [{
x: 0.14500000000000002,
y: 0.25
}, {
x: 0.29000000000000004,
y: 0.5
}, {
x: 0.5,
y: 0.5
}]
})
同样的事情easeInOutSine
easeInOutSine
:.44,.05,.55,.95
- 真实的
easeInSine
:0.47, 0, 0.745, 0.715
easeOutSine
:0.39, 0.575, 0.565, 1
- 脚本设计
easeInSine
:.22,.03,.36,.26
easeOutSine
:.14,.24,.28,.48