/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes} checked by tsc
 */
/**
 * Copyright (C) 2018 Michael Czechowski <mail@dailysh.it>
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; version 2.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
import { Injectable } from '@angular/core';
import * as Random from 'd3-random';
export class NlsMathService {
    /**
     * Calculate distance between to points with coordinates.
     * @param {?} a
     * @param {?} b
     * @return {?}
     */
    Δ(a, b) {
        return Math.pow(Math.pow(a.x - b.x, 2) + Math.pow(a.y - b.y, 2), 0.5);
    }
    /**
     * @param {?} point
     * @param {?} matrix
     * @return {?}
     */
    getClosestCenter(point, matrix) {
        if (this.Δ(point, matrix.start) < this.Δ(point, matrix.end)) {
            return matrix.start;
        }
        else {
            return matrix.end;
        }
    }
    /**
     * @param {?} point
     * @param {?} matrix
     * @return {?}
     */
    getFarestCenter(point, matrix) {
        if (this.Δ(point, matrix.start) > this.Δ(point, matrix.end)) {
            return matrix.start;
        }
        else {
            return matrix.end;
        }
    }
    /**
     * @param {?} matrix
     * @param {?} overlap
     * @return {?}
     */
    randomPoint(matrix, overlap) {
        /** @type {?} */
        const x = {
            min: matrix.center.x - matrix.width * overlap,
            max: matrix.center.x + matrix.width * overlap
        };
        /** @type {?} */
        const y = {
            min: matrix.center.y - matrix.height * overlap,
            max: matrix.center.y + matrix.height * overlap
        };
        return {
            x: Random.randomUniform(x.min, x.max)(),
            y: Random.randomUniform(y.min, y.max)()
        };
    }
    /**
     * @param {?} width
     * @param {?} height
     * @return {?}
     */
    centerOfArea(width, height) {
        return {
            x: width * 0.5,
            y: height * 0.5
        };
    }
    /**
     * @param {?} p1
     * @param {?} p2
     * @return {?}
     */
    centerOfPoints(p1, p2) {
        return {
            x: (p1.x + p2.x) * 0.5,
            y: (p1.y + p2.y) * 0.5
        };
    }
    /**
     * @param {?} curve
     * @return {?}
     */
    centerOfCurve(curve) {
        /** @type {?} */
        const genMedian = this.medianPoint(curve);
        /** @type {?} */
        const p1 = genMedian.next().value;
        /** @type {?} */
        const p2 = genMedian.next().value;
        /** @type {?} */
        const radians = this.angleRadians(p1, p2);
        return Object.assign(this.centerOfPoints(p1, p2), { ascent: radians });
    }
    /**
     * @param {?} curve
     * @return {?}
     */
    medianOfCurve(curve) {
        /** @type {?} */
        const genMedian = this.medianPoint(curve);
        /** @type {?} */
        const p1 = genMedian.next().value;
        /** @type {?} */
        const p2 = genMedian.next().value;
        /** @type {?} */
        const p3 = genMedian.next().value;
        /** @type {?} */
        const radians = this.angleRadians(p2, p3);
        // const radians = Math.round(Math.random() * 10000) / 1000;
        // @todo if nodes are less than 5 error occures
        return Object.assign(p1, { ascent: radians });
    }
    /**
     * @param {?} p1
     * @param {?} p2
     * @return {?}
     */
    angleRadians(p1, p2) {
        return Math.atan2(p2.y - p1.y, p2.x - p1.x);
    }
    /**
     * @param {?} p1
     * @param {?} p2
     * @return {?}
     */
    angleDegree(p1, p2) {
        return this.angleRadians(p1, p2) * 180 / Math.PI;
    }
    /**
     * @param {?} list
     * @return {?}
     */
    medianIndex(list) {
        return Math.floor(list.length * 0.5);
    }
    /**
     * @param {?} points
     * @return {?}
     */
    *medianPoint(points) {
        /** @type {?} */
        let index;
        /** @type {?} */
        const list = points.slice();
        while (list) {
            index = this.medianIndex(points);
            yield list[index];
            list.splice(index, 1);
        }
    }
    /**
     * Generator for sine bounce
     *
     * @param {?=} amplitude default to 1 indicates the amplitude in positive as well
     * in negative range
     * @param {?=} decimals amount of decimal places
     * @param {?=} start 0 indicates to initiate with positive numbers, 1 indicates to
     * start with negative numbers first
     * @return {?}
     */
    *bounce(amplitude = 1, decimals = 1, start = 0) {
        /** @type {?} */
        const power = Math.pow(10, decimals);
        /** @type {?} */
        const step = 2 / (power);
        /** @type {?} */
        let index = 0;
        while (true) {
            /** @type {?} */
            const radians = Math.PI * step * index + start;
            yield Math.round((Math.sin(radians) * amplitude) * power) / power;
            index++;
        }
    }
    /**
     * @param {?=} startPositive
     * @return {?}
     */
    *flipSign(startPositive = true) {
        /** @type {?} */
        let sign = startPositive ? 1 : -1;
        while (true) {
            yield sign = sign * (-1);
        }
    }
}
NlsMathService.decorators = [
    { type: Injectable },
];

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See the GNU General Public License for\n * more details.\n *\n * You should have received a copy of the GNU General Public License along with\n * this program; if not, write to the Free Software Foundation, Inc., 51\n * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.\n */\n\nimport { Inject, Injectable } from '@angular/core';\nimport * as Selection from 'd3-selection';\nimport * as Random from 'd3-random';\n\nimport { Point } from './../models/point.model';\nimport { Graph } from './../models/graph.model';\n\n@Injectable()\nexport class NlsMathService {\n\n  /**\n   * Calculate distance between to points with coordinates.\n   * @param a\n   * @param b\n   */\n  public Δ(a: Point, b: Point) {\n    return Math.pow(Math.pow(a.x - b.x, 2) + Math.pow(a.y - b.y, 2), 0.5);\n  }\n\n  public getClosestCenter(point: Point, matrix: any) {\n    if (this.Δ(point, matrix.start) < this.Δ(point, matrix.end)) {\n      return matrix.start;\n    } else {\n      return matrix.end;\n    }\n  }\n\n  public getFarestCenter(point: Point, matrix: any) {\n    if (this.Δ(point, matrix.start) > this.Δ(point, matrix.end)) {\n      return matrix.start;\n    } else {\n      return matrix.end;\n    }\n  }\n\n  public randomPoint(matrix: any, overlap: number) {\n    const x = {\n      min: matrix.center.x - matrix.width * overlap,\n      max: matrix.center.x + matrix.width * overlap\n    };\n    const y = {\n      min: matrix.center.y - matrix.height * overlap,\n      max: matrix.center.y + matrix.height * overlap\n    };\n\n    return {\n      x: Random.randomUniform(x.min, x.max)(),\n      y: Random.randomUniform(y.min, y.max)()\n    };\n  }\n\n  public centerOfArea(width, height): Point {\n    return {\n      x: width * 0.5,\n      y: height * 0.5\n    };\n  }\n\n  public centerOfPoints(p1: Point, p2: Point) {\n    return {\n      x: (p1.x + p2.x) * 0.5,\n      y: (p1.y + p2.y) * 0.5\n    };\n  }\n\n  public centerOfCurve(curve: Point[]) {\n    const genMedian = this.medianPoint(curve);\n    const p1 = genMedian.next().value;\n    const p2 = genMedian.next().value;\n    const radians = this.angleRadians(p1, p2);\n\n    return Object.assign(this.centerOfPoints(p1, p2), { ascent: radians });\n  }\n\n  public medianOfCurve(curve: Point[]) {\n    const genMedian = this.medianPoint(curve);\n    const p1 = genMedian.next().value;\n    const p2 = genMedian.next().value;\n    const p3 = genMedian.next().value;\n    const radians = this.angleRadians(p2, p3);\n    // const radians = Math.round(Math.random() * 10000) / 1000;\n    // @todo if nodes are less than 5 error occures\n    return Object.assign(p1, { ascent: radians });\n  }\n\n  public angleRadians(p1: Point, p2: Point) {\n    return Math.atan2(p2.y - p1.y, p2.x - p1.x);\n  }\n\n  public angleDegree(p1: Point, p2: Point) {\n    return this.angleRadians(p1, p2) * 180 / Math.PI;\n  }\n\n  public medianIndex(list: any): number {\n    return Math.floor(list.length * 0.5);\n  }\n\n  public *medianPoint(points: Point[]) {\n    let index: number;\n    const list: Point[] = points.slice();\n\n    while (list) {\n      index = this.medianIndex(points);\n      yield list[index];\n\n      list.splice(index, 1);\n    }\n  }\n\n  /**\n   * Generator for sine bounce\n   *\n   * @param start 0 indicates to initiate with positive numbers, 1 indicates to\n   * start with negative numbers first\n   * @param amplitude default to 1 indicates the amplitude in positive as well\n   * in negative range\n   * @param decimals amount of decimal places\n   */\n\n  public *bounce(\n    amplitude: number = 1,\n    decimals: number = 1,\n    start: number = 0\n  ) {\n    const power = Math.pow(10, decimals);\n    const step = 2 / (power);\n    let index = 0;\n\n    while (true) {\n      const radians = Math.PI * step * index + start;\n      yield Math.round((Math.sin(radians) * amplitude) * power) / power;\n\n      index++;\n    }\n  }\n\n  public *flipSign(startPositive: boolean = true) {\n    let sign = startPositive ? 1 : -1;\n\n    while (true) {\n      yield sign = sign * (-1);\n    }\n  }\n}\n"]}