Class: Animation

Konva. Animation

Animation constructor.

new Animation(func [, layers])

Parameters:
Name Type Argument Description
func AnimationFn

function executed on each animation frame. The function is passed a frame object, which contains
timeDiff, lastTime, time, and frameRate properties. The timeDiff property is the number of milliseconds that have passed
since the last animation frame. The time property is the time in milliseconds that elapsed from the moment the animation started
to the current animation frame. The lastTime property is a time value from the previous frame. The frameRate property is the current frame rate in frames / second.
Return false from function, if you don't need to redraw layer/layers on some frames.
layers Konva.Layer | Array <optional>

layer(s) to be redrawn on each animation frame. Can be a layer, an array of layers, or null.
Not specifying a node will result in no redraw.
Source:
konva.js
Example
// move a node to the right at 50 pixels / second
var velocity = 50;

var anim = new Konva.Animation(function(frame) {
  var dist = velocity * (frame.timeDiff / 1000);
  node.move({x: dist, y: 0});
}, layer);

anim.start();

Methods

addLayer(layer)

add layer. Returns true if the layer was added, and false if it was not

Parameters:
Name Type Description
layer Konva.Layer

to add
Source:
konva.js
Returns:

true if layer is added to animation, otherwise false

Type
Bool

getLayers()

get layers

Source:
konva.js
Returns:

Array of Konva.Layer

Type
Array

isRunning()

determine if animation is running or not. returns true or false

Source:
konva.js
Returns:

is animation running?

Type
Bool

setLayers( [layers])

set layers to be redrawn on each animation frame

Parameters:
Name Type Argument Description
layers Konva.Layer | Array <optional>

layer(s) to be redrawn. Can be a layer, an array of layers, or null. Not specifying a node will result in no redraw.
Source:
konva.js
Returns:

this

Type
Konva.Animation

start()

start animation

Source:
konva.js
Returns:

this

Type
Konva.Animation

stop()

stop animation

Source:
konva.js
Returns:

this

Type
Konva.Animation