काइनेटिक जेएस: एनीमेशन में आसान प्रभाव लागू करें - jquery, html5, html5-canvas, kineticjs

कोई भी एनीमेशन में आसान प्रभाव को लागू करने के बारे में जानता है। मेरे कोड के नीचे जिसमें मैं आसान प्रभाव सेट करने की कोशिश कर रहा हूं। मैं easin, easout, बाउंसिंग, स्पिन आदि प्रभाव लागू करना चाहते हैं

var yPos = myShape.getAttr("y"),
xPos = myShape.getAttr("x"),
maxX = 1000,
maxY = 1000,
yIncreasing = true,
xIncreasing = true; //lets assume myShape resides somewhere below the max

var anim = new Kinetic.Animation(function(frame) {
/* move the shape back and fourth in a y direction */
if (yPos < maxY && yIncreasing)  {
hexagon.setY(yPos++);
} else {
if (yPos < 1) {
yIncreasing = true;
hexagon.setY(yPos++);
} else {
hexagon.setY(yPos--);
yIncreasing = false;
}
}

/* move the shape back and fourth in a x direction */
if (xPos < maxX && xIncreasing) {
hexagon.setX(xPos++);
} else {
if (xPos < 1) {
xIncreasing = true;
hexagon.setX(xPos++);
} else {
hexagon.setX(xPos--);
xIncreasing = false;
}
}
}, layer);

उत्तर:

उत्तर № 1 के लिए 1

रॉबर्ट पेननर ने प्रसिद्ध और अक्सर उपयोग किए जाने वाले आसान एल्गोरिदम लिखा:

यहां पेननर के आसान कार्यों का उपयोग करने पर Kirupa.com द्वारा एक अच्छी तरह से लिखित ट्यूटोरियल है:

http://www.kirupa.com/html5/animating_with_easing_functions_in_javascript.htm

आप अपने किनेटिकजेएस एनिमेशन में आसान जोड़ने के लिए अपने आसान एल्गोरिदम का उपयोग कर सकते हैं।

जावास्क्रिप्ट ऑब्जेक्ट के अंदर कोडित उनके एल्गोरिदम यहां दिए गए हैं:

// t: current time,
// b: beginning value,
// c: total change in value over the duration,
// d: duration,
// return value: the "eased" value between b and b+c at this current time t

var easings={

easeInQuad: function ( t, b, c, d) {
return c*(t/=d)*t + b;
},
easeOutQuad: function ( t, b, c, d) {
return -c *(t/=d)*(t-2) + b;
},
easeInOutQuad: function ( t, b, c, d) {
if ((t/=d/2) < 1) return c/2*t*t + b;
return -c/2 * ((--t)*(t-2) - 1) + b;
},
easeInCubic: function ( t, b, c, d) {
return c*(t/=d)*t*t + b;
},
easeOutCubic: function ( t, b, c, d) {
return c*((t=t/d-1)*t*t + 1) + b;
},
easeInOutCubic: function ( t, b, c, d) {
if ((t/=d/2) < 1) return c/2*t*t*t + b;
return c/2*((t-=2)*t*t + 2) + b;
},
easeInQuart: function ( t, b, c, d) {
return c*(t/=d)*t*t*t + b;
},
easeOutQuart: function ( t, b, c, d) {
return -c * ((t=t/d-1)*t*t*t - 1) + b;
},
easeInOutQuart: function ( t, b, c, d) {
if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
return -c/2 * ((t-=2)*t*t*t - 2) + b;
},
easeInQuint: function ( t, b, c, d) {
return c*(t/=d)*t*t*t*t + b;
},
easeOutQuint: function ( t, b, c, d) {
return c*((t=t/d-1)*t*t*t*t + 1) + b;
},
easeInOutQuint: function ( t, b, c, d) {
if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
return c/2*((t-=2)*t*t*t*t + 2) + b;
},
easeInSine: function ( t, b, c, d) {
return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
},
easeOutSine: function ( t, b, c, d) {
return c * Math.sin(t/d * (Math.PI/2)) + b;
},
easeInOutSine: function ( t, b, c, d) {
return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
},
easeInExpo: function ( t, b, c, d) {
return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
},
easeOutExpo: function ( t, b, c, d) {
return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
},
easeInOutExpo: function ( t, b, c, d) {
if (t==0) return b;
if (t==d) return b+c;
if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
},
easeInCirc: function ( t, b, c, d) {
return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
},
easeOutCirc: function ( t, b, c, d) {
return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
},
easeInOutCirc: function ( t, b, c, d) {
if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
},
easeInElastic: function ( t, b, c, d) {
var s=1.70158;var p=0;var a=c;
if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
if (a < Math.abs(c)) { a=c; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (c/a);
return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
},
easeOutElastic: function ( t, b, c, d) {
var s=1.70158;var p=0;var a=c;
if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
if (a < Math.abs(c)) { a=c; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (c/a);
return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
},
easeInOutElastic: function ( t, b, c, d) {
var s=1.70158;var p=0;var a=c;
if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
if (a < Math.abs(c)) { a=c; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (c/a);
if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
},
easeInBack: function ( t, b, c, d, s) {
if (s == undefined) s = 1.70158;
return c*(t/=d)*t*((s+1)*t - s) + b;
},
easeOutBack: function ( t, b, c, d, s) {
if (s == undefined) s = 1.70158;
return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
},
easeInOutBack: function ( t, b, c, d, s) {
if (s == undefined) s = 1.70158;
if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
},
easeInBounce: function ( t, b, c, d) {
return c - this.easing.easeOutBounce ( d-t, 0, c, d) + b;
},
easeOutBounce: function ( t, b, c, d) {
if ((t/=d) < (1/2.75)) {
return c*(7.5625*t*t) + b;
} else if (t < (2/2.75)) {
return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
} else if (t < (2.5/2.75)) {
return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
} else {
return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
}
},
easeInOutBounce: function ( t, b, c, d) {
if (t < d/2) return this.easing.easeInBounce ( t*2, 0, c, d) * .5 + b;
return this.easing.easeOutBounce ( t*2-d, 0, c, d) * .5 + c*.5 + b;
}
};

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