stackblur-canvas/dist/stackblur.min.mjs

Fast and almost Gaussian blur by Mario Klingemann

function t(t,r,e){return Object.defineProperty(t,"prototype",{writable:!1}),t}function r(t){return r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t},r(t)
/**
* StackBlur - a fast almost Gaussian Blur For Canvas
*
* In case you find this class useful - especially in commercial projects -
* I am not totally unhappy for a small donation to my PayPal account
* mario@quasimondo.de
*
* Or support me on flattr:
* {@link https://flattr.com/thing/72791/StackBlur-a-fast-almost-Gaussian-Blur-Effect-for-CanvasJavascript}.
*
* @module StackBlur
* @author Mario Klingemann
* Contact: mario@quasimondo.com
* Website: {@link http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html}
* Twitter: `@quasimondo`
* @copyright (c) 2010 Mario Klingemann
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/}var 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f(t,r,e,a,n,i){if(!(isNaN(i)||i<1)){i|=0;var g=o(t,r,e,a,n);g=c(g,r,e,a,n,i),t.getContext("2d").putImageData(g,r,e)}}function c(t,r,n,o,i,g){for(var f,c=t.data,s=2*g+1,v=o-1,u=i-1,b=g+1,x=b*(b+1)/2,h=new l,m=h,y=1;y<s;y++)m=m.next=new l,y===b&&(f=m);m.next=h;for(var p,d,w=null,B=null,C=e[g],I=a[g],E=0,S=0,N=0;N<i;N++){var R=c[S],D=c[S+1],G=c[S+2],j=b*R,M=b*D,A=b*G,H=x*R,O=x*D,T=x*G;m=h;for(var W=0;W<b;W++)m.r=R,m.g=D,m.b=G,m=m.next;for(var L=0,P=0,k=0,q=1;q<b;q++)p=S+(Math.min(v,q)<<2),H+=(m.r=R=c[p])*(d=b-q),O+=(m.g=D=c[p+1])*d,T+=(m.b=G=c[p+2])*d,L+=R,P+=D,k+=G,m=m.next;w=h,B=f;for(var z=0;z<o;z++)c[S]=H*C>>>I,c[S+1]=O*C>>>I,c[S+2]=T*C>>>I,H-=j,O-=M,T-=A,j-=w.r,M-=w.g,A-=w.b,p=E+((p=z+g+1)<v?p:v)<<2,H+=L+=w.r=c[p],O+=P+=w.g=c[p+1],T+=k+=w.b=c[p+2],w=w.next,j+=R=B.r,M+=D=B.g,A+=G=B.b,L-=R,P-=D,k-=G,B=B.next,S+=4;E+=o}for(var F=0;F<o;F++){var J=c[S=F<<2],K=c[S+1],Q=c[S+2],U=b*J,V=b*K,X=b*Q,Y=x*J,Z=x*K,$=x*Q;m=h;for(var _=0;_<b;_++)m.r=J,m.g=K,m.b=Q,m=m.next;for(var tt=0,rt=0,et=0,at=1,nt=o;at<=g;at++)S=nt+F<<2,Y+=(m.r=J=c[S])*(d=b-at),Z+=(m.g=K=c[S+1])*d,$+=(m.b=Q=c[S+2])*d,tt+=J,rt+=K,et+=Q,m=m.next,at<u&&(nt+=o);S=F,w=h,B=f;for(var ot=0;ot<i;ot++)c[p=S<<2]=Y*C>>>I,c[p+1]=Z*C>>>I,c[p+2]=$*C>>>I,Y-=U,Z-=V,$-=X,U-=w.r,V-=w.g,X-=w.b,p=F+((p=ot+b)<u?p:u)*o<<2,Y+=tt+=w.r=c[p],Z+=rt+=w.g=c[p+1],$+=et+=w.b=c[p+2],w=w.next,U+=J=B.r,V+=K=B.g,X+=Q=B.b,tt-=J,rt-=K,et-=Q,B=B.next,S+=o}return t}var l=t(function t(){!function(t,r){if(!(t instanceof r))throw new TypeError("Cannot call a class as a function")}(this,t),this.r=0,this.g=0,this.b=0,this.a=0,this.next=null});export{l as BlurStack,f as canvasRGB,i as canvasRGBA,n as image,c as imageDataRGB,g as imageDataRGBA};
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