????
Your IP : 216.73.216.64
/**
* @preserve
* Copyright 2015-2018 Igor Bezkrovnyi
* All rights reserved. (MIT Licensed)
*
* hueStatistics.ts - part of Image Quantization Library
*/
import { rgb2hsl } from '../conversion/rgb2hsl';
import { hueGroup } from './palette';
class HueGroup {
num = 0;
cols: number[] = [];
}
export class HueStatistics {
private _numGroups: number;
private _minCols: number;
private _stats: HueGroup[];
private _groupsFull: number;
constructor(numGroups: number, minCols: number) {
this._numGroups = numGroups;
this._minCols = minCols;
this._stats = [];
for (let i = 0; i <= numGroups; i++) {
this._stats[i] = new HueGroup();
}
this._groupsFull = 0;
}
check(i32: number) {
if (this._groupsFull === this._numGroups + 1) {
this.check = () => {};
}
const r = i32 & 0xff;
const g = (i32 >>> 8) & 0xff;
const b = (i32 >>> 16) & 0xff;
const hg =
r === g && g === b
? 0
: 1 + hueGroup(rgb2hsl(r, g, b).h, this._numGroups);
const gr = this._stats[hg];
const min = this._minCols;
gr.num++;
if (gr.num > min) {
return;
}
if (gr.num === min) {
this._groupsFull++;
}
if (gr.num <= min) {
this._stats[hg].cols.push(i32);
}
}
injectIntoDictionary(histG: Record<string, number>) {
for (let i = 0; i <= this._numGroups; i++) {
if (this._stats[i].num <= this._minCols) {
this._stats[i].cols.forEach((col: number) => {
if (!histG[col]) {
histG[col] = 1;
} else {
histG[col]++;
}
});
}
}
}
injectIntoArray(histG: string[]) {
for (let i = 0; i <= this._numGroups; i++) {
if (this._stats[i].num <= this._minCols) {
this._stats[i].cols.forEach((col: unknown) => {
if (histG.indexOf(col as string) === -1) {
histG.push(col as string);
}
});
}
}
}
}