/**
* File : shapers/JigSaw.js
* Created : 01/04/2015
* By : Francesc Busquets <francesc@gmail.com>
*
* JClic.js
* An HTML5 player of JClic activities
* https://projectestac.github.io/jclic.js
*
* @source https://github.com/projectestac/jclic.js
*
* @license EUPL-1.2
* @licstart
* (c) 2000-2020 Educational Telematic Network of Catalonia (XTEC)
*
* Licensed under the EUPL, Version 1.1 or -as soon they will be approved by
* the European Commission- subsequent versions of the EUPL (the "Licence");
* You may not use this work except in compliance with the Licence.
*
* You may obtain a copy of the Licence at:
* https://joinup.ec.europa.eu/software/page/eupl
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the Licence is distributed on an "AS IS" basis, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* Licence for the specific language governing permissions and limitations
* under the Licence.
* @licend
* @module
*/
import Shaper from './Shaper';
import { Path, PathStroke } from '../AWT';
/**
*
* This {@link module:shapers/Shaper.Shaper Shaper} returns a set of rectangular shapes with teeth and slots that fit between them.
* @extends module:shapers/Shaper.Shaper
*/
export class JigSaw extends Shaper {
/**
* JigSaw constructor
* @param {number} nx - Number of columns
* @param {number} ny - Number of rows
*/
constructor(nx, ny) {
super(nx, ny);
}
/**
* Builds the jigsaw shapes based on the number of rows and columns
* @override
*/
buildShapes() {
// Create two two-dimension arrays for storing the type of horizontal and vertical lines
let hLineType = [], vLineType = [];
for (let i = 0; i <= this.nRows; i++) {
hLineType[i] = [];
vLineType[i] = [];
}
for (let row = 0; row < this.nRows; row++) {
for (let col = 0; col < this.nCols; col++) {
hLineType[row][col] = row === 0 ? 0 : 1 + (this.randomLines ? Math.round(Math.random() * 9) : row + col) % 2;
vLineType[row][col] = col === 0 ? 0 : 1 + (this.randomLines ? Math.round(Math.random() * 9) : col + row + 1) % 2;
if (col === this.nCols - 1)
vLineType[row][col + 1] = 0;
if (row === this.nRows - 1)
hLineType[row + 1][col] = 0;
}
}
const w = 1 / this.nCols, h = 1 / this.nRows;
for (let r = 0; r < this.nRows; r++) {
for (let c = 0; c < this.nCols; c++) {
const x = w * c;
const y = h * r;
const sd = new Path([new PathStroke('M', [x, y])]);
this.hLine(sd, hLineType[r][c], x + 0, y + 0, w, h, false);
this.vLine(sd, vLineType[r][c + 1], x + w, y + 0, w, h, false);
this.hLine(sd, hLineType[r + 1][c], x + w, y + h, w, h, true);
this.vLine(sd, vLineType[r][c], x + 0, y + h, w, h, true);
sd.addStroke(new PathStroke('X'));
sd.calcEnclosingRect();
// Save the Path in `shapeData`
this.shapeData[r * this.nCols + c] = sd;
}
}
this.initiated = true;
}
/**
* Adds an horizontal line to the provided path
* @param {module:AWT.Path} sd - The Path to which the line will be added
* @param {number} type - Type of tooth: 0 is flat (no tooth), 1 means tooth up, and 2 means tooth down
* @param {number} x - X coordinate of the starting point
* @param {number} y - Y coordinate of the starting point
* @param {number} w - Width of the piece
* @param {number} h - Height of the piece
* @param {boolean} inv - The line must be drawn right to left
*/
hLine(sd, type, x, y, w, h, inv) {
const
kx = inv ? -1 : 1,
ky = type === 1 ? 1 : -1;
if (type === 0)
// Flat line
sd.addStroke(new PathStroke('L', [x + w * kx, y]));
else {
const x0 = x + (w - w * this.baseWidthFactor) / 2 * kx;
const wb = w * this.baseWidthFactor * kx;
// Approximation to the tooth:
sd.addStroke(new PathStroke('L', [x0, y]));
// The tooth:
const hb = h * this.toothHeightFactor * ky;
sd.addStroke(new PathStroke('L', [x0, y + hb]));
sd.addStroke(new PathStroke('L', [x0 + wb, y + hb]));
sd.addStroke(new PathStroke('L', [x0 + wb, y]));
// Draw the remaining of the line
sd.addStroke(new PathStroke('L', [x + w * kx, y]));
}
}
/**
*
* Adds a vertical line to the provided path
* @param {module:AWT.Path} sd - The Path to which the line will be added
* @param {number} type - Type of tooth: 0 is flat (no tooth), 1 means tooth right, and 2 means tooth left
* @param {number} x - X coordinate of the starting point
* @param {number} y - Y coordinate of the starting point
* @param {number} w - Width of the piece
* @param {number} h - Height of the piece
* @param {boolean} inv - The line must be drawn bottom to top
*/
vLine(sd, type, x, y, w, h, inv) {
const
ky = inv ? -1 : 1,
kx = type === 1 ? 1 : -1;
if (type === 0) {
// Flat line
sd.addStroke(new PathStroke('L', [x, y + h * ky]));
} else {
const y0 = y + (h - h * this.baseWidthFactor) / 2 * ky;
const hb = h * this.baseWidthFactor * ky;
// Approximation to the tooth:
sd.addStroke(new PathStroke('L', [x, y0]));
// The tooth:
const wb = w * this.toothHeightFactor * kx;
sd.addStroke(new PathStroke('L', [x + wb, y0]));
sd.addStroke(new PathStroke('L', [x + wb, y0 + hb]));
sd.addStroke(new PathStroke('L', [x, y0 + hb]));
// Draw the remaining line
sd.addStroke(new PathStroke('L', [x, y + h * ky]));
}
}
}
// Register this class in the list of known shapers
export default Shaper.registerClass('@JigSaw', JigSaw);