PracticalVision/node_modules/roughjs/bin/generator.js

import { line, solidFillPolygon, patternFillPolygon, rectangle, ellipseWithParams, generateEllipseParams, linearPath, arc, patternFillArc, curve, svgPath } from './renderer.js';
import { randomSeed } from './math.js';
import { curveToBezier } from 'points-on-curve/lib/curve-to-bezier.js';
import { pointsOnBezierCurves } from 'points-on-curve';
import { pointsOnPath } from 'points-on-path';
const NOS = 'none';
export class RoughGenerator {
    constructor(config) {
        this.defaultOptions = {
            maxRandomnessOffset: 2,
            roughness: 1,
            bowing: 1,
            stroke: '#000',
            strokeWidth: 1,
            curveTightness: 0,
            curveFitting: 0.95,
            curveStepCount: 9,
            fillStyle: 'hachure',
            fillWeight: -1,
            hachureAngle: -41,
            hachureGap: -1,
            dashOffset: -1,
            dashGap: -1,
            zigzagOffset: -1,
            seed: 0,
            combineNestedSvgPaths: false,
            disableMultiStroke: false,
            disableMultiStrokeFill: false
        };
        this.config = config || {};
        if (this.config.options) {
            this.defaultOptions = this._o(this.config.options);
        }
    }
    static newSeed() {
        return randomSeed();
    }
    _o(options) {
        return options ? Object.assign({}, this.defaultOptions, options) : this.defaultOptions;
    }
    _d(shape, sets, options) {
        return { shape, sets: sets || [], options: options || this.defaultOptions };
    }
    line(x1, y1, x2, y2, options) {
        const o = this._o(options);
        return this._d('line', [line(x1, y1, x2, y2, o)], o);
    }
    rectangle(x, y, width, height, options) {
        const o = this._o(options);
        const paths = [];
        const outline = rectangle(x, y, width, height, o);
        if (o.fill) {
            const points = [[x, y], [x + width, y], [x + width, y + height], [x, y + height]];
            if (o.fillStyle === 'solid') {
                paths.push(solidFillPolygon(points, o));
            }
            else {
                paths.push(patternFillPolygon(points, o));
            }
        }
        if (o.stroke !== NOS) {
            paths.push(outline);
        }
        return this._d('rectangle', paths, o);
    }
    ellipse(x, y, width, height, options) {
        const o = this._o(options);
        const paths = [];
        const ellipseParams = generateEllipseParams(width, height, o);
        const ellipseResponse = ellipseWithParams(x, y, o, ellipseParams);
        if (o.fill) {
            if (o.fillStyle === 'solid') {
                const shape = ellipseWithParams(x, y, o, ellipseParams).opset;
                shape.type = 'fillPath';
                paths.push(shape);
            }
            else {
                paths.push(patternFillPolygon(ellipseResponse.estimatedPoints, o));
            }
        }
        if (o.stroke !== NOS) {
            paths.push(ellipseResponse.opset);
        }
        return this._d('ellipse', paths, o);
    }
    circle(x, y, diameter, options) {
        const ret = this.ellipse(x, y, diameter, diameter, options);
        ret.shape = 'circle';
        return ret;
    }
    linearPath(points, options) {
        const o = this._o(options);
        return this._d('linearPath', [linearPath(points, false, o)], o);
    }
    arc(x, y, width, height, start, stop, closed = false, options) {
        const o = this._o(options);
        const paths = [];
        const outline = arc(x, y, width, height, start, stop, closed, true, o);
        if (closed && o.fill) {
            if (o.fillStyle === 'solid') {
                const shape = arc(x, y, width, height, start, stop, true, false, o);
                shape.type = 'fillPath';
                paths.push(shape);
            }
            else {
                paths.push(patternFillArc(x, y, width, height, start, stop, o));
            }
        }
        if (o.stroke !== NOS) {
            paths.push(outline);
        }
        return this._d('arc', paths, o);
    }
    curve(points, options) {
        const o = this._o(options);
        const paths = [];
        const outline = curve(points, o);
        if (o.fill && o.fill !== NOS && points.length >= 3) {
            const bcurve = curveToBezier(points);
            const polyPoints = pointsOnBezierCurves(bcurve, 10, (1 + o.roughness) / 2);
            if (o.fillStyle === 'solid') {
                paths.push(solidFillPolygon(polyPoints, o));
            }
            else {
                paths.push(patternFillPolygon(polyPoints, o));
            }
        }
        if (o.stroke !== NOS) {
            paths.push(outline);
        }
        return this._d('curve', paths, o);
    }
    polygon(points, options) {
        const o = this._o(options);
        const paths = [];
        const outline = linearPath(points, true, o);
        if (o.fill) {
            if (o.fillStyle === 'solid') {
                paths.push(solidFillPolygon(points, o));
            }
            else {
                paths.push(patternFillPolygon(points, o));
            }
        }
        if (o.stroke !== NOS) {
            paths.push(outline);
        }
        return this._d('polygon', paths, o);
    }
    path(d, options) {
        const o = this._o(options);
        const paths = [];
        if (!d) {
            return this._d('path', paths, o);
        }
        d = (d || '').replace(/\n/g, ' ').replace(/(-\s)/g, '-').replace('/(\s\s)/g', ' ');
        const hasFill = o.fill && o.fill !== 'transparent' && o.fill !== NOS;
        const hasStroke = o.stroke !== NOS;
        const simplified = !!(o.simplification && (o.simplification < 1));
        const distance = simplified ? (4 - 4 * (o.simplification)) : ((1 + o.roughness) / 2);
        const sets = pointsOnPath(d, 1, distance);
        if (hasFill) {
            if (o.combineNestedSvgPaths) {
                const combined = [];
                sets.forEach((set) => combined.push(...set));
                if (o.fillStyle === 'solid') {
                    paths.push(solidFillPolygon(combined, o));
                }
                else {
                    paths.push(patternFillPolygon(combined, o));
                }
            }
            else {
                sets.forEach((polyPoints) => {
                    if (o.fillStyle === 'solid') {
                        paths.push(solidFillPolygon(polyPoints, o));
                    }
                    else {
                        paths.push(patternFillPolygon(polyPoints, o));
                    }
                });
            }
        }
        if (hasStroke) {
            if (simplified) {
                sets.forEach((set) => {
                    paths.push(linearPath(set, false, o));
                });
            }
            else {
                paths.push(svgPath(d, o));
            }
        }
        return this._d('path', paths, o);
    }
    opsToPath(drawing) {
        let path = '';
        for (const item of drawing.ops) {
            const data = item.data;
            switch (item.op) {
                case 'move':
                    path += `M${data[0]} ${data[1]} `;
                    break;
                case 'bcurveTo':
                    path += `C${data[0]} ${data[1]}, ${data[2]} ${data[3]}, ${data[4]} ${data[5]} `;
                    break;
                case 'lineTo':
                    path += `L${data[0]} ${data[1]} `;
                    break;
            }
        }
        return path.trim();
    }
    toPaths(drawable) {
        const sets = drawable.sets || [];
        const o = drawable.options || this.defaultOptions;
        const paths = [];
        for (const drawing of sets) {
            let path = null;
            switch (drawing.type) {
                case 'path':
                    path = {
                        d: this.opsToPath(drawing),
                        stroke: o.stroke,
                        strokeWidth: o.strokeWidth,
                        fill: NOS
                    };
                    break;
                case 'fillPath':
                    path = {
                        d: this.opsToPath(drawing),
                        stroke: NOS,
                        strokeWidth: 0,
                        fill: o.fill || NOS
                    };
                    break;
                case 'fillSketch':
                    path = this.fillSketch(drawing, o);
                    break;
            }
            if (path) {
                paths.push(path);
            }
        }
        return paths;
    }
    fillSketch(drawing, o) {
        let fweight = o.fillWeight;
        if (fweight < 0) {
            fweight = o.strokeWidth / 2;
        }
        return {
            d: this.opsToPath(drawing),
            stroke: o.fill || NOS,
            strokeWidth: fweight,
            fill: NOS
        };
    }
}