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Add limitX and limitY with range for each layer #267

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Add limitX and limitY with range for each layer #267

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18 changes: 18 additions & 0 deletions src/parallax.js
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Original file line number Diff line number Diff line change
Expand Up @@ -295,6 +295,9 @@ class Parallax {
this.depthsX = []
this.depthsY = []

this.limitsX = []
this.limitsY = []

for (let index = 0; index < this.layers.length; index++) {
let layer = this.layers[index]

Expand All @@ -310,6 +313,12 @@ class Parallax {
let depth = helpers.data(layer, 'depth') || 0
this.depthsX.push(helpers.data(layer, 'depth-x') || depth)
this.depthsY.push(helpers.data(layer, 'depth-y') || depth)

const limitX = (helpers.data(layer, 'limit-x') || '').split(',');
this.limitsX.push(limitX)

const limitY = (helpers.data(layer, 'limit-y') || '').split(',');
this.limitsY.push(limitY)
}
}

Expand Down Expand Up @@ -489,6 +498,15 @@ class Parallax {
depthY = this.depthsY[index],
xOffset = this.velocityX * (depthX * (this.invertX ? -1 : 1)),
yOffset = this.velocityY * (depthY * (this.invertY ? -1 : 1))

if (!isNaN(parseFloat(this.limitsX[index][0])) && !isNaN(parseFloat(this.limitsX[index][1]))) {
xOffset = helpers.clamp(xOffset, parseFloat(this.limitsX[index][0]), parseFloat(this.limitsX[index][1]))
}

if (!isNaN(parseFloat(this.limitsY[index][0])) && !isNaN(parseFloat(this.limitsY[index][1]))) {
yOffset = helpers.clamp(yOffset, parseFloat(this.limitsY[index][0]), parseFloat(this.limitsY[index][1]))
}

this.setPosition(layer, xOffset, yOffset)
}
this.raf = rqAnFr(this.onAnimationFrame)
Expand Down