Class ScarfPatternFactory

src/scarf_pattern_factory.ts:21–154

const FALSE_STRING = 'false';

class ScarfPatternFactory {
  static cubicBezierFocalPoints: CubicBezierFocalPoints = {
    Balanced: [{x: 0.6, y: 0.3}, {x: 0.4, y: 0.7}],
    Thin: [{x: 0.75, y: 0.3}, {x: 0.5, y: 0.7}],
    Thick: [{x: 0.5, y: 0.3}, {x: 0.25, y: 0.7}],
    Straight: [{x: 0.5, y: 0.5}, {x: 0.5, y: 0.5}],
  };

  factoryName = 'Sophie Scarf';

  borderStitches: number = 3;
  rowsInput: PatternFactoryInput;
  centerLengthInput: PatternFactoryInput;
  centerWidthInput: PatternFactoryInput;
  textureInput: PatternFactoryInput;
  shapeInput: PatternFactoryInput;
  /**
   * Whether the increases and decreases should be symmetric. If true, increases
   * and decreases occur on even rows. If false, increases occur on even rows
   * and decreases on odd rows.
   */
  symmetricInput: PatternFactoryInput;

  constructor() {
    this.rowsInput = new PatternFactoryInput(
        'Total Length',
        'How long should the scarf measure from tip to top along its ' +
            'longest dimension?',
        412, 'rows');
    this.centerLengthInput = new PatternFactoryInput(
        'Center Length',
        'How many additional rows should the scarf have in the center part ' +
            '(between increases and decreases) along the long dimension?',
        0, 'rows');
    this.centerWidthInput = new PatternFactoryInput(
        'Center Width',
        'How many stitches should the scarf have in the center part, ' +
            'between the increases and decreases?' +
            ' Does not include the 6 stitches for the i-cord border.',
        25, 'stitches');
    this.textureInput = new PatternFactoryInput(
        'Texture', 'What type of texture do you want?',
        Array.from(texturesMap.keys())[0] as string, null,
        Array.from(texturesMap.keys()));
    this.shapeInput = new PatternFactoryInput(
        'Shape', 'What general shape would you like?',
        Object.keys(ScarfPatternFactory.cubicBezierFocalPoints)[0] as string,
        null, Object.keys(ScarfPatternFactory.cubicBezierFocalPoints));
    this.symmetricInput = new PatternFactoryInput(
        'Symmetric', 'Should the increases and decreases be symmetric?',
        TRUE_STRING, null, [TRUE_STRING, FALSE_STRING]);
  }

  getInputs(): PatternFactoryInput[] {
    return [
      this.rowsInput, this.centerLengthInput, this.centerWidthInput,
      this.textureInput, this.shapeInput, this.symmetricInput
    ];