Quick Start
update by @r1ader in 2022/04/01
Introduction
r_animate.js
helps us producing animation with functional programming
Most of methods in r_animate.js
,has the form like Things
.do
(something
)
Take the fade-out animation as an example:
if element
is the subject of the animation , then ths code should be
Let's focus on the last line of code,
There are three subjects element
, r_animate
, act.OUT.BLU
They correspond to Things
,do
和 something
In the following, these three subjects will be explained separately
r(element) -> Thing
For r_animate.js
, only the registered DOM Element
Object, can make animation。
DOM Element
is the Objects we get from
doument.getElementById
in browserthis.$refs
in vue...
But what is registered ?
Please imagine that on a movie set, there are many people: actors, directors, assistants, etc., but only the actors can perform.
So correspondingly, an ordinary Element
object also needs to be registered as an Actor
object to start the animation.
To register an Element
, we us r
to wrap it:
After register, you can call the .r_animate(...)
to start the animation.
About r_animate
,continue to view 👇
r_animate -> do
r_animate
is our most common method。
The above code will make element
perform something
animation
Notice:The details of
something
will be explained in detail in the third part. Currently, it can be directly understood as an animation such as zooming in and zooming out.
With functional programming, we can call r_animate
for several times like this:
The above code will make element
perform something_2
animation after something_1
is finished.
So it can go on and go on.
Take the fade-in and fade-out animation as an example, if we need such an animation:
The opacity of the ball first changes to 0 and then back to 1
Then the code is like this
check and run the code in stackblitz
About the parameter accepted by the r_animate
, continue to view. 👇
act.OUT.OPACITY -> something
act.OUT.OPACITY
is a parameter accepted by r_animate
In the act
library, many animations are predefined for developers to call directly.
like
act.OUT.OPACITY
act.OUT.BLUR
act.IN.SCROLL_DOWN
act.EMPHASIZE.SHAKE_X
...
Click to see more predefined animations
Of course, most cases require custom animations.
So let's take the real structure of act.OUT.OPACITY
as an example to see how to customize the animation.
Yes, it's actually that simple.
This is the basic structure of an act.
act_key is the css property value that needs to be changed, such as opacity, width, top, etc.
act_value is a string composed of the initial value start and the end value end in the form of
[
start
~
end
]
Notice: start and end can only be numbers.
px, em, deg and other units need to be placed after brackets
]
Here are some examples of act
:
Of course, if you don't need to consider the initial value, act_value also supports a more concise syntas:
It helps a lot when you are not certain about the start value of the animation.
Beside,
You may also need to configure the duration
of the animation
and the interpolated form of motion tweening ease
About ease function ,check https://easings.net
ease
also supports bezier mode
about cubic-bezier,check https://cubic-bezier.com/
For more configuration items, you can check in the Api Doc
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