Bezier factory

import { constructors } from '../core/library.js';

import { addStrings, doCreate, mergeOver, pushUnique, Ωempty } from '../helper/utilities.js';

import { makeCoordinate } from '../untracked-factory/coordinate.js';

import baseMix from '../mixin/base.js';
import shapeMix from '../mixin/shape-basic.js';
import curveMix from '../mixin/shape-curve.js';

import { BEZIER, COORD, END_CONTROL, ENTITY, PATH, START_CONTROL, T_BEZIER, ZERO_STR } from '../helper/shared-vars.js';

const END_CONTROL_PARTICLE = 'endControlParticle',
    END_CONTROL_PATH = 'endControlPath',
    END_CONTROL_PIVOT = 'endControlPivot',
    START_CONTROL_PARTICLE = 'startControlParticle',
    START_CONTROL_PATH = 'startControlPath',
    START_CONTROL_PIVOT = 'startControlPivot';

const Bezier = function (items = Ωempty) {

    this.startControl = makeCoordinate();
    this.endControl = makeCoordinate();

    this.currentStartControl = makeCoordinate();
    this.currentEndControl = makeCoordinate();

    this.startControlLockTo = COORD;
    this.endControlLockTo = COORD;

    this.curveInit(items);
    this.shapeInit(items);

    this.dirtyStartControl = true;
    this.dirtyEndControl = true;

    return this;
};

const P = Bezier.prototype = doCreate();
P.type = T_BEZIER;
P.lib = ENTITY;
P.isArtefact = true;
P.isAsset = false;

baseMix(P);
shapeMix(P);
curveMix(P);

const defaultAttributes = {

    startControl: null,

    startControlPivot: ZERO_STR,
    startControlPivotIndex: -1,
    startControlPivotCorner: ZERO_STR,
    addStartControlPivotHandle: false,
    addStartControlPivotOffset: false,

    startControlPath: ZERO_STR,
    startControlPathPosition: 0,
    addStartControlPathHandle: false,
    addStartControlPathOffset: true,

    startControlParticle: ZERO_STR,

    endControl: null,

    endControlPivot: ZERO_STR,
    endControlPivotIndex: -1,
    endControlPivotCorner: ZERO_STR,
    addEndControlPivotHandle: false,
    addEndControlPivotOffset: false,

    endControlPath: ZERO_STR,
    endControlPathPosition: 0,
    addEndControlPathHandle: false,
    addEndControlPathOffset: true,

    endControlParticle: ZERO_STR,

    startControlLockTo: ZERO_STR,
    endControlLockTo: ZERO_STR,
};
P.defs = mergeOver(P.defs, defaultAttributes);

P.packetCoordinates = pushUnique(P.packetCoordinates, ['startControl', 'endControl']);
P.packetObjects = pushUnique(P.packetObjects, ['startControlPivot', 'startControlParticle', 'startControlPath', 'endControlPivot', 'endControlParticle', 'endControlPath']);

const G = P.getters,
    S = P.setters,
    D = P.deltaSetters;

S.endControlPivot = function (item) {

    this.setControlHelper(item, END_CONTROL_PIVOT, END_CONTROL);
    this.updateDirty();
    this.dirtyEndControl = true;
};

S.endControlParticle = function (item) {

    this.setControlHelper(item, END_CONTROL_PARTICLE, END_CONTROL);
    this.updateDirty();
    this.dirtyEndControl = true;
};

S.endControlPath = function (item) {

    this.setControlHelper(item, END_CONTROL_PATH, END_CONTROL);
    this.updateDirty();
    this.dirtyEndControl = true;
    this.currentEndControlPathData = false;
};

S.endControlPathPosition = function (item) {

    this.endControlPathPosition = item;
    this.dirtyEndControl = true;
    this.currentEndControlPathData = false;
    this.dirtyFilterIdentifier = true;
};
D.endControlPathPosition = function (item) {

    this.endControlPathPosition += item;
    this.dirtyEndControl = true;
    this.currentEndControlPathData = false;
    this.dirtyFilterIdentifier = true;
};

S.startControlPivot = function (item) {

    this.setControlHelper(item, START_CONTROL_PIVOT, START_CONTROL);
    this.updateDirty();
    this.dirtyStartControl = true;
};

S.startControlParticle = function (item) {

    this.setControlHelper(item, START_CONTROL_PARTICLE, START_CONTROL);
    this.updateDirty();
    this.dirtyStartControl = true;
};

S.startControlPath = function (item) {

    this.setControlHelper(item, START_CONTROL_PATH, START_CONTROL);
    this.updateDirty();
    this.dirtyStartControl = true;
    this.currentStartControlPathData = false;
};

S.startControlPathPosition = function (item) {

    this.startControlPathPosition = item;
    this.dirtyStartControl = true;
    this.currentStartControlPathData = false;
    this.dirtyFilterIdentifier = true;
};
D.startControlPathPosition = function (item) {

    this.startControlPathPosition += item;
    this.dirtyStartControl = true;
    this.currentStartControlPathData = false;
    this.dirtyFilterIdentifier = true;
};

G.startControlPositionX = function () {

    return this.currentStartControl[0];
};
G.startControlPositionY = function () {

    return this.currentStartControl[1];
};
G.startControlPosition = function () {

    return [].concat(this.currentStartControl);
};

S.startControlX = function (coord) {

    if (coord != null) {

        this.startControl[0] = coord;
        this.updateDirty();
        this.dirtyStartControl = true;
        this.currentStartControlPathData = false;
    }
};
S.startControlY = function (coord) {

    if (coord != null) {

        this.startControl[1] = coord;
        this.updateDirty();
        this.dirtyStartControl = true;
        this.currentStartControlPathData = false;
    }
};
S.startControl = function (x, y) {

    this.setCoordinateHelper(START_CONTROL, x, y);
    this.updateDirty();
    this.dirtyStartControl = true;
    this.currentStartControlPathData = false;
};
D.startControlX = function (coord) {

    const c = this.startControl;
    c[0] = addStrings(c[0], coord);
    this.updateDirty();
    this.dirtyStartControl = true;
    this.currentStartControlPathData = false;
};
D.startControlY = function (coord) {

    const c = this.startControl;
    c[1] = addStrings(c[1], coord);
    this.updateDirty();
    this.dirtyStartControl = true;
    this.currentStartControlPathData = false;
};
D.startControl = function (x, y) {

    this.setDeltaCoordinateHelper(START_CONTROL, x, y);
    this.updateDirty();
    this.dirtyStartControl = true;
    this.currentStartControlPathData = false;
};

G.endControlPositionX = function () {

    return this.currentEndControl[0];
};
G.endControlPositionY = function () {

    return this.currentEndControl[1];
};
G.endControlPosition = function () {

    return [].concat(this.currentEndControl);
};

S.endControlX = function (coord) {

    if (coord != null) {

        this.endControl[0] = coord;
        this.updateDirty();
        this.dirtyEndControl = true;
        this.currentEndControlPathData = false;
    }
};
S.endControlY = function (coord) {

    if (coord != null) {

        this.endControl[1] = coord;
        this.updateDirty();
        this.dirtyEndControl = true;
        this.currentEndControlPathData = false;
    }
};
S.endControl = function (x, y) {

    this.setCoordinateHelper(END_CONTROL, x, y);
    this.updateDirty();
    this.dirtyEndControl = true;
    this.currentEndControlPathData = false;
};
D.endControlX = function (coord) {

    const c = this.endControl;
    c[0] = addStrings(c[0], coord);
    this.updateDirty();
    this.dirtyEndControl = true;
    this.currentEndControlPathData = false;
};
D.endControlY = function (coord) {

    const c = this.endControl;
    c[1] = addStrings(c[1], coord);
    this.updateDirty();
    this.dirtyEndControl = true;
    this.currentEndControlPathData = false;
};
D.endControl = function (x, y) {

    this.setDeltaCoordinateHelper(END_CONTROL, x, y);
    this.updateDirty();
    this.dirtyEndControl = true;
    this.currentEndControlPathData = false;
};

S.startControlLockTo = function (item) {

    this.startControlLockTo = item;
    this.updateDirty();
    this.dirtyStartControlLock = true;
};

S.endControlLockTo = function (item) {

    this.endControlLockTo = item;
    this.updateDirty();
    this.dirtyEndControlLock = true;
    this.currentEndControlPathData = false;
};

P.cleanSpecies = function () {

    this.dirtySpecies = false;
    this.pathDefinition = this.makeBezierPath();
};

P.makeBezierPath = function () {

    const [sX, sY] = this.currentStampPosition;
    const [sCX, sCY] = this.currentStartControl;
    const [eCX, eCY] = this.currentEndControl;
    const [eX, eY] = this.currentEnd;

    return `m0,0c${(sCX - sX).toFixed(2)},${(sCY - sY).toFixed(2)} ${(eCX - sX).toFixed(2)},${(eCY - sY).toFixed(2)} ${(eX - sX).toFixed(2)},${(eY - sY).toFixed(2)}`;
};

P.cleanDimensions = function () {

    this.dirtyDimensions = false;
    this.dirtyHandle = true;
    this.dirtyOffset = true;

    this.dirtyStart = true;
    this.dirtyStartControl = true;
    this.dirtyEndControl = true;
    this.dirtyEnd = true;

    this.dirtyFilterIdentifier = true;
};

P.preparePinsForStamp = function () {

    const dirtyPins = this.dirtyPins,
        ePivot = this.endPivot,
        ePath = this.endPath,
        scPivot = this.startControlPivot,
        scPath = this.startControlPath,
        ecPivot = this.endControlPivot,
        ecPath = this.endControlPath;

    for (let i = 0, iz = dirtyPins.length, name; i < iz; i++) {

        name = dirtyPins[i];

        if ((scPivot && scPivot.name === name) || (scPath && scPath.name === name)) {

            this.dirtyStartControl = true;
            if (this.startControlLockTo.includes(PATH)) this.currentStartControlPathData = false;
        }

        if ((ecPivot && ecPivot.name === name) || (ecPath && ecPath.name === name)) {

            this.dirtyEndControl = true;
            if (this.endControlLockTo.includes(PATH)) this.currentEndControlPathData = false;
        }

        if ((ePivot && ePivot.name === name) || (ePath && ePath.name === name)) {

            this.dirtyEnd = true;
            if (this.endLockTo.includes(PATH)) this.currentEndPathData = false;
        }
    }
    dirtyPins.length = 0;
};

export const makeBezier = function (items = Ωempty) {

    if (!items) return false;
    items.species = BEZIER;
    return new Bezier(items);
};

constructors.Bezier = Bezier;