shshaw / canvallax Goto Github PK
View Code? Open in Web Editor NEWEasy parallax effects and element management on canvas.
Home Page: http://shshaw.github.io/Canvallax/
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Canvallax Spritesheet
Snippet for using spritesheets with Canvallax
(function(win){
win._clx = win._clx || [];
win._clx.push(function(canvallax){
'use strict';
var _originalDraw = canvallax.Image.fn.draw;
canvallax.Image.fn.draw = function(ctx,coords){
if ( this.sprite && this.image ) {
ctx.drawImage(this.image, this.sprite[0], this.sprite[1], this.width, this.height, coords[0], coords[1], this.width, this.height);
} else {
_originalDraw.apply(this,arguments);
}
};
});
})(this);
var spriteSheet = canvallax.Image({ src: './spritesheet.png' });
var sprite = spriteSheet.clone({ sprite: [frame.x, frame.y, frame.width, frame.height] });Canvallax clouds
Thank you for your work, I really liked it and have included it on the site.
http://vvl99.narod.ru/Clouds.html
If you reload the page, the code from Canvallax v.1 and Canvallax v.2 will be used randomly:
if (type) { ctx.translate(randomRange(halfw, width - (w * maxScale * 1.3)), randomRange(halfh + halfh / 4, height - (h * maxScale))) } else { ctx.translate( weightedRandom( width - (w * randScale), 5 ), weightedRandom( height- (h * randScale), 5) ) };
Which corresponds to:
location.hash = type ? "puffy_clouds" : "cumulus_clouds";
- time:
"morning", "noon", "twilight", "evening", "night", "afternoon".
I tried to vary the clouds as much as possible depending on the time of day.
Cavallax with the cloud example is not working
I took the example shown in codepen: http://codepen.io/shshaw/pen/ZbExyV
and I get an error: Canvallax.js:80 Uncaught TypeError: Cannot read property 'scrollLeft' of null
Looks like the line body = doc.body gets a null since doc.body is null
without changing anything, just copying the example from there and it is not working.
my html looks like that (I omitted the html and head tags):
<body>
<script>
var can = Canvallax({
className: 'bg-canvas',
damping: 40
});
/* then the //Clouds part and the rest of the Canvallax example */
</script>
</body>
It doesn't even get to the clouds part... What am I missing??
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