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/**
* @license
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
function t(t){return t<0?-1:0===t?0:1}function n(t,n,r){return(1-r)*t+r*n}function r(t){return(t%=360)<0&&(t+=360),t}
/**
* @license
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const a=[[.41233895,.35762064,.18051042],[.2126,.7152,.0722],[.01932141,.11916382,.95034478]],s=[[3.2413774792388685,-1.5376652402851851,-.49885366846268053],[-.9691452513005321,1.8758853451067872,.04156585616912061],[.05562093689691305,-.20395524564742123,1.0571799111220335]],e=[95.047,100,108.883];function o(t){return t>>16&255}function h(t){return t>>8&255}function i(t){return 255&t}function c(t,n,r){const a=s,e=a[0][0]*t+a[0][1]*n+a[0][2]*r,o=a[1][0]*t+a[1][1]*n+a[1][2]*r,h=a[2][0]*t+a[2][1]*n+a[2][2]*r,i=w(e),c=w(o),u=w(h);return(255<<24|(255&i)<<16|(255&c)<<8|255&u)>>>0}function u(t){const n=(t+16)/116,r=24389/27,a=n*n*n>216/24389;return c((a?n*n*n:t/r)*e[0],(t>8?n*n*n:t/r)*e[1],(a?n*n*n:t/r)*e[2])}function M(t){const n=function(t){const n=f(o(t)),r=f(h(t)),s=f(i(t));return[(e=[n,r,s])[0]*(c=a)[0][0]+e[1]*c[0][1]+e[2]*c[0][2],e[0]*c[1][0]+e[1]*c[1][1]+e[2]*c[1][2],e[0]*c[2][0]+e[1]*c[2][1]+e[2]*c[2][2]];var e,c}(t)[1]/100;if(n<=216/24389)return 24389/27*n;return 116*Math.pow(n,1/3)-16}function l(t){return t>8?100*Math.pow((t+16)/116,3):t/(24389/27)*100}function f(t){const n=t/255;return n<=.040449936?n/12.92*100:100*Math.pow((n+.055)/1.055,2.4)}function w(t){const n=t/100;let r=0;return r=n<=.0031308?12.92*n:1.055*Math.pow(n,1/2.4)-.055,a=0,s=255,(e=Math.round(255*r))<a?a:e>s?s:e;var a,s,e}
/**
* @license
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class m{
/**
* Parameters are intermediate values of the CAM16 conversion process. Their
* names are shorthand for technical color science terminology, this class
* would not benefit from documenting them individually. A brief overview
* is available in the CAM16 specification, and a complete overview requires
* a color science textbook, such as Fairchild's Color Appearance Models.
*/
constructor(t,n,r,a,s,e,o,h,i,c){this.n=t,this.aw=n,this.nbb=r,this.ncb=a,this.c=s,this.nc=e,this.rgbD=o,this.fl=h,this.fLRoot=i,this.z=c}
/**
* Create ViewingConditions from a simple, physically relevant, set of
* parameters.
*
* @param whitePoint White point, measured in the XYZ color space.
* default = D65, or sunny day afternoon
* @param adaptingLuminance The luminance of the adapting field. Informally,
* how bright it is in the room where the color is viewed. Can be
* calculated from lux by multiplying lux by 0.0586. default = 11.72,
* or 200 lux.
* @param backgroundLstar The lightness of the area surrounding the color.
* measured by L* in L*a*b*. default = 50.0
* @param surround A general description of the lighting surrounding the
* color. 0 is pitch dark, like watching a movie in a theater. 1.0 is a
* dimly light room, like watching TV at home at night. 2.0 means there
* is no difference between the lighting on the color and around it.
* default = 2.0
* @param discountingIlluminant Whether the eye accounts for the tint of the
* ambient lighting, such as knowing an apple is still red in green light.
* default = false, the eye does not perform this process on
* self-luminous objects like displays.
*/static make(t=function(){return e}(),r=200/Math.PI*l(50)/100,a=50,s=2,o=!1){const h=t,i=.401288*h[0]+.650173*h[1]+-.051461*h[2],c=-.250268*h[0]+1.204414*h[1]+.045854*h[2],u=-.002079*h[0]+.048952*h[1]+.953127*h[2],M=.8+s/10,f=M>=.9?n(.59,.69,10*(M-.9)):n(.525,.59,10*(M-.8));let w=o?1:M*(1-1/3.6*Math.exp((-r-42)/92));w=w>1?1:w<0?0:w;const b=M,p=[w*(100/i)+1-w,w*(100/c)+1-w,w*(100/u)+1-w],I=1/(5*r+1),g=I*I*I*I,d=1-g,C=g*r+.1*d*d*Math.cbrt(5*r),D=l(a)/t[1],q=1.48+Math.sqrt(D),L=.725/Math.pow(D,.2),T=L,j=[Math.pow(C*p[0]*i/100,.42),Math.pow(C*p[1]*c/100,.42),Math.pow(C*p[2]*u/100,.42)],U=[400*j[0]/(j[0]+27.13),400*j[1]/(j[1]+27.13),400*j[2]/(j[2]+27.13)];return new m(D,(2*U[0]+U[1]+.05*U[2])*L,L,T,f,b,p,C,Math.pow(C,.25),q)}}m.DEFAULT=m.make();
/**
* @license
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class b{
/**
* All of the CAM16 dimensions can be calculated from 3 of the dimensions, in
* the following combinations:
* - {j or q} and {c, m, or s} and hue
* - jstar, astar, bstar
* Prefer using a static method that constructs from 3 of those dimensions.
* This constructor is intended for those methods to use to return all
* possible dimensions.
*
* @param hue
* @param chroma informally, colorfulness / color intensity. like saturation
* in HSL, except perceptually accurate.
* @param j lightness
* @param q brightness; ratio of lightness to white point's lightness
* @param m colorfulness
* @param s saturation; ratio of chroma to white point's chroma
* @param jstar CAM16-UCS J coordinate
* @param astar CAM16-UCS a coordinate
* @param bstar CAM16-UCS b coordinate
*/
constructor(t,n,r,a,s,e,o,h,i){this.hue=t,this.chroma=n,this.j=r,this.q=a,this.m=s,this.s=e,this.jstar=o,this.astar=h,this.bstar=i}
/**
* CAM16 instances also have coordinates in the CAM16-UCS space, called J*,
* a*, b*, or jstar, astar, bstar in code. CAM16-UCS is included in the CAM16
* specification, and is used to measure distances between colors.
*/distance(t){const n=this.jstar-t.jstar,r=this.astar-t.astar,a=this.bstar-t.bstar,s=Math.sqrt(n*n+r*r+a*a);return 1.41*Math.pow(s,.63)}
/**
* @param argb ARGB representation of a color.
* @return CAM16 color, assuming the color was viewed in default viewing
* conditions.
*/static fromInt(t){return b.fromIntInViewingConditions(t,m.DEFAULT)}
/**
* @param argb ARGB representation of a color.
* @param viewingConditions Information about the environment where the color
* was observed.
* @return CAM16 color.
*/static fromIntInViewingConditions(n,r){const a=(65280&n)>>8,s=255&n,e=f((16711680&n)>>16),o=f(a),h=f(s),i=.41233895*e+.35762064*o+.18051042*h,c=.2126*e+.7152*o+.0722*h,u=.01932141*e+.11916382*o+.95034478*h,M=.401288*i+.650173*c-.051461*u,l=-.250268*i+1.204414*c+.045854*u,w=-.002079*i+.048952*c+.953127*u,m=r.rgbD[0]*M,p=r.rgbD[1]*l,I=r.rgbD[2]*w,g=Math.pow(r.fl*Math.abs(m)/100,.42),d=Math.pow(r.fl*Math.abs(p)/100,.42),C=Math.pow(r.fl*Math.abs(I)/100,.42),D=400*t(m)*g/(g+27.13),q=400*t(p)*d/(d+27.13),L=400*t(I)*C/(C+27.13),T=(11*D+-12*q+L)/11,j=(D+q-2*L)/9,U=(20*D+20*q+21*L)/20,x=(40*D+20*q+L)/20,S=180*Math.atan2(j,T)/Math.PI,v=S<0?S+360:S>=360?S-360:S,E=v*Math.PI/180,H=x*r.nbb,P=100*Math.pow(H/r.aw,r.c*r.z),V=4/r.c*Math.sqrt(P/100)*(r.aw+4)*r.fLRoot,A=v<20.14?v+360:v,F=5e4/13*(.25*(Math.cos(A*Math.PI/180+2)+3.8))*r.nc*r.ncb*Math.sqrt(T*T+j*j)/(U+.305),J=Math.pow(F,.9)*Math.pow(1.64-Math.pow(.29,r.n),.73),R=J*Math.sqrt(P/100),k=R*r.fLRoot,z=50*Math.sqrt(J*r.c/(r.aw+4)),y=(1+100*.007)*P/(1+.007*P),B=1/.0228*Math.log(1+.0228*k),G=B*Math.cos(E),K=B*Math.sin(E);return new b(v,R,P,V,k,z,y,G,K)}
/**
* @param j CAM16 lightness
* @param c CAM16 chroma
* @param h CAM16 hue
*/static fromJch(t,n,r){return b.fromJchInViewingConditions(t,n,r,m.DEFAULT)}
/**
* @param j CAM16 lightness
* @param c CAM16 chroma
* @param h CAM16 hue
* @param viewingConditions Information about the environment where the color
* was observed.
*/static fromJchInViewingConditions(t,n,r,a){const s=4/a.c*Math.sqrt(t/100)*(a.aw+4)*a.fLRoot,e=n*a.fLRoot,o=n/Math.sqrt(t/100),h=50*Math.sqrt(o*a.c/(a.aw+4)),i=r*Math.PI/180,c=(1+100*.007)*t/(1+.007*t),u=1/.0228*Math.log(1+.0228*e),M=u*Math.cos(i),l=u*Math.sin(i);return new b(r,n,t,s,e,h,c,M,l)}
/**
* @param jstar CAM16-UCS lightness.
* @param astar CAM16-UCS a dimension. Like a* in L*a*b*, it is a Cartesian
* coordinate on the Y axis.
* @param bstar CAM16-UCS b dimension. Like a* in L*a*b*, it is a Cartesian
* coordinate on the X axis.
*/static fromUcs(t,n,r){return b.fromUcsInViewingConditions(t,n,r,m.DEFAULT)}
/**
* @param jstar CAM16-UCS lightness.
* @param astar CAM16-UCS a dimension. Like a* in L*a*b*, it is a Cartesian
* coordinate on the Y axis.
* @param bstar CAM16-UCS b dimension. Like a* in L*a*b*, it is a Cartesian
* coordinate on the X axis.
* @param viewingConditions Information about the environment where the color
* was observed.
*/static fromUcsInViewingConditions(t,n,r,a){const s=n,e=r,o=Math.sqrt(s*s+e*e),h=(Math.exp(.0228*o)-1)/.0228/a.fLRoot;let i=Math.atan2(e,s)*(180/Math.PI);i<0&&(i+=360);const c=t/(1-.007*(t-100));return b.fromJchInViewingConditions(c,h,i,a)}
/**
* @return ARGB representation of color, assuming the color was viewed in
* default viewing conditions, which are near-identical to the default
* viewing conditions for sRGB.
*/toInt(){return this.viewed(m.DEFAULT)}
/**
* @param viewingConditions Information about the environment where the color
* will be viewed.
* @return ARGB representation of color
*/viewed(n){const r=0===this.chroma||0===this.j?0:this.chroma/Math.sqrt(this.j/100),a=Math.pow(r/Math.pow(1.64-Math.pow(.29,n.n),.73),1/.9),s=this.hue*Math.PI/180,e=.25*(Math.cos(s+2)+3.8),o=n.aw*Math.pow(this.j/100,1/n.c/n.z),h=e*(5e4/13)*n.nc*n.ncb,i=o/n.nbb,u=Math.sin(s),M=Math.cos(s),l=23*(i+.305)*a/(23*h+11*a*M+108*a*u),f=l*M,w=l*u,m=(460*i+451*f+288*w)/1403,b=(460*i-891*f-261*w)/1403,p=(460*i-220*f-6300*w)/1403,I=Math.max(0,27.13*Math.abs(m)/(400-Math.abs(m))),g=t(m)*(100/n.fl)*Math.pow(I,1/.42),d=Math.max(0,27.13*Math.abs(b)/(400-Math.abs(b))),C=t(b)*(100/n.fl)*Math.pow(d,1/.42),D=Math.max(0,27.13*Math.abs(p)/(400-Math.abs(p))),q=t(p)*(100/n.fl)*Math.pow(D,1/.42),L=g/n.rgbD[0],T=C/n.rgbD[1],j=q/n.rgbD[2];return c(1.86206786*L-1.01125463*T+.14918677*j,.38752654*L+.62144744*T-.00897398*j,-.0158415*L-.03412294*T+1.04996444*j)}}
/**
* @license
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/class p{constructor(t,n,r){this.internalHue=t,this.internalChroma=n,this.internalTone=r,this.setInternalState(this.toInt())}
/**
* @param hue 0 <= hue < 360; invalid values are corrected.
* @param chroma 0 <= chroma < ?; Informally, colorfulness. The color
* returned may be lower than the requested chroma. Chroma has a different
* maximum for any given hue and tone.
* @param tone 0 <= tone <= 100; invalid values are corrected.
* @return HCT representation of a color in default viewing conditions.
*/static from(t,n,r){return new p(t,n,r)}
/**
* @param argb ARGB representation of a color.
* @return HCT representation of a color in default viewing conditions
*/static fromInt(t){const n=b.fromInt(t),r=M(t);return new p(n.hue,n.chroma,r)}toInt(){return D(this.internalHue,this.internalChroma,this.internalTone)}
/**
* A number, in degrees, representing ex. red, orange, yellow, etc.
* Ranges from 0 <= hue < 360.
*/get hue(){return this.internalHue}
/**
* @param newHue 0 <= newHue < 360; invalid values are corrected.
* Chroma may decrease because chroma has a different maximum for any given
* hue and tone.
*/set hue(t){this.setInternalState(D(r(t),this.internalChroma,this.internalTone))}get chroma(){return this.internalChroma}
/**
* @param newChroma 0 <= newChroma < ?
* Chroma may decrease because chroma has a different maximum for any given
* hue and tone.
*/set chroma(t){this.setInternalState(D(this.internalHue,t,this.internalTone))}
/** Lightness. Ranges from 0 to 100. */get tone(){return this.internalTone}
/**
* @param newTone 0 <= newTone <= 100; invalid valids are corrected.
* Chroma may decrease because chroma has a different maximum for any given
* hue and tone.
*/set tone(t){this.setInternalState(D(this.internalHue,this.internalChroma,t))}setInternalState(t){const n=b.fromInt(t),r=M(t);this.internalHue=n.hue,this.internalChroma=n.chroma,this.internalTone=r}}const I=.4,g=1,d=.2,C=.01;function D(t,n,a){return function(t,n,a,s){if(n<1||Math.round(a)<=0||Math.round(a)>=100)return u(a);t=r(t);let e=n,o=n,h=0,i=!0,c=null;for(;Math.abs(h-e)>=I;){const n=q(t,o,a);if(i){if(null!=n)return n.viewed(s);i=!1,o=h+(e-h)/2}else null===n?e=o:(c=n,h=o),o=h+(e-h)/2}if(null===c)return u(a);return c.viewed(s)}(r(t),n,(e=100,(o=a)<(s=0)?s:o>e?e:o),m.DEFAULT);var s,e,o}function q(t,n,r){let a=0,s=100,e=0,o=1e3,h=1e3,i=null;for(;Math.abs(a-s)>C;){e=a+(s-a)/2;const c=b.fromJch(e,n,t).toInt(),u=M(c),l=Math.abs(r-u);if(l<d){const n=b.fromInt(c),r=n.distance(b.fromJch(n.j,n.chroma,t));r<=g&&r<=h&&(o=l,h=r,i=n)}if(0===o&&0===h)break;u<r?a=e:s=e}return i}
/**
* @license
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/const L=t=>{const n=o(t),r=h(t),a=i(t),s=[n.toString(16),r.toString(16),a.toString(16)];for(const[e,o]of s.entries())1===o.length&&(s[e]="0"+o);return"#"+s.join("")},T=t=>{const n=3===(t=t.replace("#","")).length,r=6===t.length,a=8===t.length;if(!n&&!r&&!a)throw new Error("unexpected hex "+t);let s=0,e=0,o=0;return n?(s=j(t.slice(0,1).repeat(2)),e=j(t.slice(1,2).repeat(2)),o=j(t.slice(2,3).repeat(2))):r?(s=j(t.slice(0,2)),e=j(t.slice(2,4)),o=j(t.slice(4,6))):a&&(s=j(t.slice(2,4)),e=j(t.slice(4,6)),o=j(t.slice(6,8))),(255<<24|(255&s)<<16|(255&e)<<8|255&o)>>>0};function j(t){return parseInt(t,16)}export{p as H,T as a,L as h};
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