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<title>CodePen - Jigsaw puzzle</title>
<style>
body {
margin: 0;
padding:0;
border: none;
}
#forPuzzle {
border:none;
left:0px;
top:0px;
}
#divmenu {
position:absolute;
top:5px;
left:15px;
width:0px;
height:0px;
cursor:default;
z-index:50001;
border-radius:5px;
}
#divmenu:hover {
width:60px;
height:50px;
background-color:rgba(255,255,180,0.7);
z-index:50001;
}
#divmenu .title {
font-family: Verdana, "Bitstream Vera Sans", "Lucida Sans", sans-serif;
font-weight:bold;
font-size:15px;
position:absolute;
top:0px;
left:30px;
color:blue;
background-color:rgba(255,255,180,0.7);
padding:5px;
border-radius:5px;
}
#divmenu .line {
font-family: Verdana, "Bitstream Vera Sans", "Lucida Sans", sans-serif;
font-weight:bold;
font-size:15px;
text-align:center;
position:absolute;
width:100px;
left:5px;
color:blue;
padding:5px;
display:none;
border-radius:5px;
}
#divmenu:hover .line {
display:block;
}
#divmenu:hover .line:hover {
background-color: rgba(255,230,90,1);
cursor:pointer;
}
</style>
<script>
window.console = window.console || function(t) {};
</script>
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if (document.location.search.match(/type=embed/gi)) {
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<body translate="no" >
<div id="forPuzzle"></div>
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<script id="rendered-js" type="module">
"use strict";
let autoStart;
const mrandom = Math.random,
mfloor = Math.floor,
mhypot = Math.hypot;
//-----------------------------------------------------------------------------
function isMiniature() {
return location.pathname.includes('/fullcpgrid/');
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
function alea(min, max) {
// random number [min..max[ . If no max is provided, [0..min[
if (typeof max == 'undefined') return min * mrandom();
return min + (max - min) * mrandom();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
function intAlea(min, max) {
// random integer number [min..max[ . If no max is provided, [0..min[
if (typeof max == 'undefined') {
max = min;min = 0;
}
return mfloor(min + (max - min) * mrandom());
} // intAlea
//-----------------------------------------------------------------------------
function arrayShuffle(array) {
/* randomly changes the order of items in an array
only the order is modified, not the elements
*/
let k1, temp;
for (let k = array.length - 1; k >= 1; --k) {
k1 = Math.floor((k + 1) * Math.random());
temp = array[k];
array[k] = array[k1];
array[k1] = temp;
} // for k
return array;
} // arrayShuffle
//-----------------------------------------------------------------------------
// Menu class
/*
Vertical single level menu
This menu will be put in a caller provided parent div. This div must have a CSS
position 'attribute' set to a value different from 'auto'
It is called with an object containing the following properties:
parentDiv : name of a div, or the div itself
idDivMenu : id which will be attributed to the menu div (child of parentDiv)
title : text for title of menu. remains visible when menu closed
lineOffset : vertical position of 1st line of menu
lineStep : vertical distance between top of two menu lines
lines : Array. Each element of this array is an object with two properties :
- text : text line
- func : "onclick" callback associated with line
*/
function Menu(params) {
let parentDiv = params.parentDiv;
if (typeof parentDiv == 'string') parentDiv = document.getElementById(parentDiv);
// div menu
let divMenu = document.createElement('div');
divMenu.setAttribute("id", params.idDivMenu);
// title
let dt = document.createElement('div');
dt.classList.add('title');
dt.appendChild(document.createTextNode(params.title));
divMenu.appendChild(dt);
for (let k = 0; k < params.lines.length; ++k) {
dt = document.createElement('div');
dt.classList.add('line');
dt.appendChild(document.createTextNode(params.lines[k].text));
dt.style.top = params.lineOffset + k * params.lineStep + "px";
dt.addEventListener("click", params.lines[k].func);
divMenu.appendChild(dt);
}
divMenu.style.height = params.lineOffset + params.lines.length * params.lineStep + 'px';
parentDiv.appendChild(divMenu);
} // Menu
//-------------------------------------------------------------------------
// Point - - - - - - - - - - - - - - - - - - - -
function Point(x, y) {
this.x = Number(x);
this.y = Number(y);
} // Point
Point.prototype.copy = function () {
return new Point(this.x, this.y);
};
// end Point - - - - - - - - - - - - - - - - - - - -
// Segment - - - - - - - - - - - - - - - - - - - -
// those segments are oriented
function Segment(p1, p2) {
this.p1 = new Point(p1.x, p1.y);
this.p2 = new Point(p2.x, p2.y);
}
Segment.prototype.length = function () {
var dx = this.p1.x - this.p2.x;
var dy = this.p1.y - this.p2.y;
return mhypot(dx, dy);
};
Segment.prototype.dx = function () {
return this.p2.x - this.p1.x;
};
Segment.prototype.dy = function () {
return this.p2.y - this.p1.y;
};
// returns a point at a given distance of p1, positive direction beeing towards p2
Segment.prototype.pointOnRelative = function (coeff) {
// attention if segment length can be 0
var dx = this.p2.x - this.p1.x;
var dy = this.p2.y - this.p1.y;
return new Point(this.p1.x + coeff * dx, this.p1.y + coeff * dy);
};
// end Segment
//-------------------------------------------------------------------------
let uploadFile;
{// scope for uploadFile
let options, callBack;
let elFile = document.createElement('input');
elFile.setAttribute('type', 'file');
elFile.style.display = 'none';
elFile.addEventListener("change", getFile);
function getFile() {
if (this.files.length == 0) {
returnLoadFile({ fail: 'no file' });
return;
}
let file = this.files[0];
let reader = new FileReader();
reader.addEventListener('load', () => {
if (options.image) options.image.src = reader.result;
returnLoadFile({ success: reader.result, file: file });
});
reader.addEventListener('abort', () => {
returnLoadFile({ fail: 'abort' });
});
reader.addEventListener('error', () => {
returnLoadFile({ fail: 'error' });
});
if (options.image || options.readMethod == 'readAsDataURL')
reader.readAsDataURL(this.files[0]);else
reader.readAsText(this.files[0]);
} // getFile
function returnLoadFile(returnedValue) {
callBack(returnedValue);
}
uploadFile = function (ocallBack, ooptions) {
/* loads a file asynchronously
at the end of the process, calls the function 'callBack' with an object :
{fail: string} in case of failure, where string gives the reason of the failure
or
{success : string, file: file} where string is the content of the image file
file represents the loaded file, and may be tested for file.type, file.name...
CAUTION ! If the user clicks 'cancel' when loading a file, nothing happens.
options is an object, with 0, one or more of the following properties :
accept : string to pass as "accept" attribute to the load file button, such as '.txt' or 'image/*'
default : no value (will accept * . * )
readMethod : 'readAsText' or 'readAsDataURL' - default is readAsText
image: if provided, must be an Image element. If possible, the data is loaded
with readAsDataURL, no matter the value of readMethod, and option.image.src is set to the data.
The function then returns normally as defined above.
Normally, a 'load' event should be triggered on the image.
*/
options = ooptions;
callBack = ocallBack;
if (options.accept) elFile.setAttribute("accept", options.accept);else
elFile.removeAttribute("accept");
elFile.click();
}; // uploadFile
} // // scope for uploadFile
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// side of a piece
function Side() {
this.type = ""; // "d" pour straight line or "z" pour classic
this.points = []; // real points or Bezier curve points
} // Side
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/* modifies this Side
changes it from a straight line (type "d") to a complex one (type "z")
The change is done towards the opposite side, between corners ca and cb
*/
Side.prototype.twist = function (ca, cb, tgx, tgy) {
const seg0 = new Segment(this.points[0], this.points[1]);
const dxh = seg0.dx();
const dyh = seg0.dy();
const seg1 = new Segment(ca, cb);
const mid0 = seg0.pointOnRelative(0.5);
const mid1 = seg1.pointOnRelative(0.5);
const segMid = new Segment(mid0, mid1);
const dxv = segMid.dx();
const dyv = segMid.dy();
const pa = pointAt(5 / 12, 1 / 12);
const pb = pointAt(4 / 12, 3 / 12);
const pc = pointAt(1 / 2, 4 / 12);
const pd = pointAt(1 - 4 / 12, 3 / 12);
const pe = pointAt(1 - 5 / 12, 1 / 12);
this.points = [seg0.p1,
new Point(seg0.p1.x + 5 / 12 * dxh * 0.52,
seg0.p1.y + 5 / 12 * dyh * 0.52),
new Point(pa.x - 1 / 12 * dxv * 0.72,
pa.y - 1 / 12 * dyv * 0.72),
pa,
new Point(pa.x + 1 / 12 * dxv * 0.72,
pa.y + 1 / 12 * dyv * 0.72),
new Point(pb.x - 1 / 12 * dxv * 0.72,
pb.y - 1 / 12 * dyv * 0.72),
pb,
new Point(pb.x + 1 / 12 * dxv * 0.52,
pb.y + 1 / 12 * dyv * 0.52),
new Point(pc.x - 2 / 12 * dxh * 0.52 * tgx,
pc.y - 2 / 12 * dyh * 0.52 * tgy),
pc,
new Point(pc.x + 2 / 12 * dxh * 0.52 * tgx,
pc.y + 2 / 12 * dyh * 0.52 * tgy),
new Point(pd.x + 1 / 12 * dxv * 0.52,
pd.y + 1 / 12 * dyv * 0.52),
pd,
new Point(pd.x - 1 / 12 * dxv * 0.72,
pd.y - 1 / 12 * dyv * 0.72),
new Point(pe.x + 1 / 12 * dxv * 0.72,
pe.y + 1 / 12 * dyv * 0.72),
pe,
new Point(pe.x - 1 / 12 * dxv * 0.72,
pe.y - 1 / 12 * dyv * 0.72),
new Point(seg0.p2.x - 5 / 12 * dxh * 0.52,
seg0.p2.y - 5 / 12 * dyh * 0.52),
seg0.p2];
this.type = "z";
function pointAt(coeffh, coeffv) {
return new Point(seg0.p1.x + coeffh * dxh + coeffv * dxv,
seg0.p1.y + coeffh * dyh + coeffv * dyv);
}
}; //
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/*
draws the path corresponding to a side
Parameters :
ctx : canvas context
shiftx, shifty : position shift used to create shadow effect
backwards : boolean, must be true for bottom and left sides, which must be drawn
from the last point to the first
withoutMoveTo : to decide whether to do a moveTo to the first point. Without MoveTo
must be done only for the first side of a piece, not for the following ones
*/
Side.prototype.drawPath = function (ctx, shiftx, shifty, backwards, withoutMoveTo) {
let k, mix, miy;
if (backwards) {
if (!withoutMoveTo) {
ctx.moveTo(this.points[this.points.length - 1].x - shiftx, this.points[this.points.length - 1].y - shifty);
}
if (this.type == "d") {
ctx.lineTo(this.points[0].x - shiftx, this.points[0].y - shifty);
} else {// jigsaw side
for (k = this.points.length - 2; k > 0; k -= 3) {
ctx.bezierCurveTo(this.points[k].x - shiftx, this.points[k].y - shifty,
this.points[k - 1].x - shiftx, this.points[k - 1].y - shifty,
this.points[k - 2].x - shiftx, this.points[k - 2].y - shifty);
} // for k
} // if jigsaw side
} else {
if (!withoutMoveTo) {
ctx.moveTo(this.points[0].x - shiftx, this.points[0].y - shifty);
}
if (this.type == "d") {
ctx.lineTo(this.points[1].x - shiftx, this.points[1].y - shifty);
} else {// edge zigzag
for (k = 1; k < this.points.length - 1; k += 3) {
ctx.bezierCurveTo(this.points[k].x - shiftx, this.points[k].y - shifty,
this.points[k + 1].x - shiftx, this.points[k + 1].y - shifty,
this.points[k + 2].x - shiftx, this.points[k + 2].y - shifty);
} // for k
} // if jigsaw side
}
}; // Side.prototype.drawPath
// end Side
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
function Piece(kx, ky) {// object with 4 sides
this.ts = new Side(); // top side
this.rs = new Side(); // right side
this.bs = new Side(); // bottom side
this.ls = new Side(); // left side
this.kx = kx;
this.ky = ky;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/* draw path for one piece
shiftx and shifty used for shadow effect
does from beginPath to closePath, but not actually draw : no stroke nor fill nor clip here
*/
Piece.prototype.drawPath = function (ctx, shiftx, shifty, withoutBeginPath) {
if (withoutBeginPath !== true) ctx.beginPath();
this.ts.drawPath(ctx, shiftx, shifty, false, false); // top side
this.rs.drawPath(ctx, shiftx, shifty, false, true); // right side
this.bs.drawPath(ctx, shiftx, shifty, true, true); // bottom side
this.ls.drawPath(ctx, shiftx, shifty, true, true); // left
}; //
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/*
creates and returns a div for an individual piece, with a canvas with shadow, and a part of the picture
canvas and div are three times the average size of pieces
puzzle object given in parameters provides required elements
scale and x and y offsets allow to scale and truncate picture to actual size
*/
Piece.prototype.createDivPiece = function (puzzle, scale, offsx, offsy) {
let ctx, shiftx, shifty;
this.theDiv = document.createElement('div');
this.theDiv.style.width = 3 * puzzle.dx + "px";
this.theDiv.style.height = 3 * puzzle.dy + "px";
this.theDiv.style.position = "absolute";
this.theCanv = document.createElement('canvas');
this.theCanv.width = 3 * puzzle.dx;
this.theCanv.height = 3 * puzzle.dy;
// origine shifting for path drawing
shiftx = puzzle.dx * (this.kx - 1);
shifty = puzzle.dy * (this.ky - 1);
ctx = this.ctx = this.theCanv.getContext("2d");
this.drawPath(ctx, shiftx, shifty);
ctx.clip();
ctx.drawImage(puzzle.image, (this.kx - 1) * puzzle.dx / scale + offsx,
(this.ky - 1) * puzzle.dy / scale + offsy,
3 * puzzle.dx / scale, 3 * puzzle.dy / scale,
0, 0,
3 * puzzle.dx, 3 * puzzle.dy);
// shadow effect
// depends on size of pieces
let shift = 1,thickness = 2;
if (puzzle.dx > 100 && puzzle.dy > 100) {
shift = 2;thickness = 5;
} else if (puzzle.dx > 50 && puzzle.dy > 50) {
shift = 1.5;thickness = 3;
}
this.drawPath(ctx, shiftx + shift, shifty + shift);
ctx.lineWidth = thickness;
ctx.strokeStyle = "rgba(0, 0, 0, 0.3)";
ctx.stroke();
this.drawPath(ctx, shiftx - shift, shifty - shift);
ctx.lineWidth = thickness;
ctx.strokeStyle = "rgba(255, 255, 255, 0.3)";
ctx.stroke();
this.drawPath(ctx, shiftx, shifty); // path used for selection of the piece
/* place of the piece at the beginning of the game */
this.moveTo(new Point((this.kx - 1) * puzzle.dx + Puzzle.MARGIN1,
(this.ky - 1) * puzzle.dy + Puzzle.MARGIN1));
this.theDiv.appendChild(this.theCanv);
return this.theDiv;
}; // createDivPiece
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// returns position of current piece
Piece.prototype.where = function () {
let x, y;
x = parseFloat(this.theDiv.style.left);
y = parseFloat(this.theDiv.style.top);
return new Point(x, y);
}; // Piece.prototype.where
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/* move piece to a given location
onePoint if location of top lefthand corner of div (far beyond visible par of piece)
*/
Piece.prototype.moveTo = function (onePoint) {
this.theDiv.style.top = onePoint.y + "px";
this.theDiv.style.left = onePoint.x + "px";
}; // Piece.prototype.moveTo
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// true if given (mouse) coordoninates are inside the piece
Piece.prototype.insidePiece = function (x, y) {
let styl = getComputedStyle(this.theDiv);
let xloc = x - parseFloat(styl.left); // 'local' x and y
let yloc = y - parseFloat(styl.top);
return this.ctx.isPointInPath(xloc, yloc);
}; // Piece.prototype.insidePiece
// fin Piece
//--------------------------------------------------------------
//--------------------------------------------------------------
// class PolyPiece
// represents a group of pieces well positionned with respect to each other.
// pckxmin, pckxmax, pckymin and pckymax record each a piece with highest kx, lowest kx...
function PolyPiece(initialPiece, puzz) {
this.pckxmin =
this.pckxmax =
this.pckymin =
this.pckymax = initialPiece;
this.pieces = [initialPiece];
this.puzzle = puzz;
} // PolyPiece
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/*
this method
- adds pieces of otherPoly to this PolyPiece
- adjusts coordinates of new pieces to make the consistent with this polyPiece
- does not re - evaluate the z - index of the polyPieces
*/
PolyPiece.prototype.merge = function (otherPoly) {
for (let k = 0; k < otherPoly.pieces.length; ++k) {
this.pieces.push(otherPoly.pieces[k]);
// watch leftmost, topmost... pieces
if (otherPoly.pieces[k].kx < this.pckxmin.kx) this.pckxmin = otherPoly.pieces[k];
if (otherPoly.pieces[k].kx > this.pckxmax.kx) this.pckxmax = otherPoly.pieces[k];
if (otherPoly.pieces[k].ky < this.pckymin.ky) this.pckymin = otherPoly.pieces[k];
if (otherPoly.pieces[k].ky > this.pckymax.ky) this.pckymax = otherPoly.pieces[k];
} // for k
this.moveTo(this.where()); // to set positions of new pieces
// sort the pieces by increasing kx, ky
this.pieces.sort(function (p1, p2) {
if (p1.ky < p2.ky) return -1;
if (p1.ky > p2.ky) return 1;
if (p1.kx < p2.kx) return -1;
if (p1.kx > p2.kx) return 1;
return 0; // should not occur
});
}; // merge
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
PolyPiece.prototype.where = function () {
return this.pieces[0].where();
}; // PolyPiece.prototype.where
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// the position of the PolyPiece is this of its 1st piece
// the position of the others is evaluated on this basis
PolyPiece.prototype.moveTo = function (pnt) {
this.pieces[0].moveTo(pnt);
for (let kp = 1; kp < this.pieces.length; ++kp) {
this.pieces[kp].moveTo(new Point(pnt.x + this.puzzle.dx * (this.pieces[kp].kx - this.pieces[0].kx),
pnt.y + this.puzzle.dy * (this.pieces[kp].ky - this.pieces[0].ky)));
} // for kp
}; // PolyPiece.prototype.moveTo
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
PolyPiece.prototype.ifNear = function (otherPoly) {
let p1, p2;
for (let kp = 0; kp < this.pieces.length; ++kp) {
p1 = this.pieces[kp];
for (let kn = 0; kn < otherPoly.pieces.length; ++kn) {
p2 = otherPoly.pieces[kn];
// p2 above p1 ?
if (p1.kx == p2.kx && p1.ky == p2.ky + 1 &&
this.puzzle.near(p1, p2, 0, -1)) return true;
// p2 below p1 ?
if (p1.kx == p2.kx && p1.ky == p2.ky - 1 &&
this.puzzle.near(p1, p2, 0, 1)) return true;
// p2 left of p1 ?
if (p1.kx - 1 == p2.kx && p1.ky == p2.ky &&
this.puzzle.near(p1, p2, -1, 0)) return true;
// p2 right of p1 ?
if (p1.kx + 1 == p2.kx && p1.ky == p2.ky &&
this.puzzle.near(p1, p2, +1, 0)) return true;
} // for kn
} // for kp
return false; // no, not near
}; // ifNear
// end class PolyPiece
//--------------------------------------------------------------
//--------------------------------------------------------------
// puzzle
/* see createPuzzle for the 'params' parameter
This constructor is used to load the picture, the actual construction of the
puzzle can't be done before picture dimensions are known
*/
function Puzzle(params) {
// image - by url (src) or straight image object
if (typeof params.img == 'string') {
this.image = new Image();
this.image.src = params.img;
this.image.addEventListener("load", function (obj) {
return function () {
obj.createPuzzle(params);
};}(this));
} else {
this.image = params.img;
this.createPuzzle(params);
}
} // Puzzle
Puzzle.MARGIN1 = 5;
//--------------------------------------------------------------
/*
The given parameter if an object with the following properties :
- img, which may be:
string type : an image url
object type : an image object (with a ready loaded image)
- width : width available for the picture
- height : width available for the picture. The script will use the
width x height space as smartly as possible
- npieces : number of pieces. May be any (sensible) integer, the script
will choose a number of columns and rows to have pieces as square as possible,
and an actual total number of pieces as close as possible to this integer.
- idiv : div which will contail the game
*/
Puzzle.prototype.createPuzzle = function (params) {
// let kx, ky, x, y, dx, dy, p1, p2, p3, brd, s1, s2, s3, s4, s5, s6, s7, s8, s9, concav, width, height, nx, ny;
// we change width or height in order to keep the picture size ratio
let wi = this.image.width; // from original picture
let he = this.image.height;
this.reqHeight = params.height; // requested height
this.reqWidth = params.width;
this.height = this.reqHeight - 2 * Puzzle.MARGIN1; // place left on screen including margin
this.width = this.reqWidth - 2 * Puzzle.MARGIN1; //
if (wi / he > this.width / this.height) {// actual picture "more horizontal" than game board
this.height = this.width * he / wi;
} else {
this.width = this.height * wi / he;
}
// end change width or height
// div Game - by name (id) or directly an object
if (typeof params.idiv == 'string') {
this.divGame = document.getElementById(params.idiv);
} else {
this.divGame = params.idiv;
}
this.divGame.style.overflow = 'visible';
this.divGame.style.position = 'relative';
// divBoard
if (!this.divBoard) {
this.divBoard = document.createElement('div');
this.divGame.appendChild(this.divBoard);
}
this.divBoard.style.overflow = 'hidden';
this.divBoard.style.position = 'absolute';
this.divBoard.style.left = 0;
this.divBoard.style.top = 0;
this.listeners = []; // table of eventListeners to remove
/* provisional dimensions of the game, waiting for actual dimensions which depend
on number of pieces
*/
this.divGame.style.width = this.divBoard.style.width = this.width + 2 * Puzzle.MARGIN1 + "px";
this.divGame.style.height = this.divBoard.style.height = this.height + 2 * Puzzle.MARGIN1 + "px";
// canv for the moving PolyPiece and the full image
if (!this.canvMobile) {
this.canvMobile = document.createElement('canvas');
this.divBoard.appendChild(this.canvMobile);
}
this.canvMobile.style.visibility = 'visible';
this.canvMobile.width = parseFloat(this.divBoard.style.width);
this.canvMobile.height = parseFloat(this.divBoard.style.height);
this.canvMobile.style.position = "absolute";
this.canvMobile.style.top = "0px";
this.canvMobile.style.left = "0px";
this.canvMobile.style.zIndex = 50000;
this.dCoupling = 10; // distance for pieces to couple together, in pixels (on each x and y axis)
this.canvMobile.getContext("2d").drawImage(this.image,
0, 0, wi, he,
Puzzle.MARGIN1, Puzzle.MARGIN1, this.width, this.height);
if (!this.menu) {
this.menu = new Menu({
parentDiv: this.divGame,
idDivMenu: "divmenu",
title: "MENU",
lineOffset: 30,
lineStep: 30,
lines: [
{ text: "Bo imagen", func: this.loadImage() },
{ text: "12 pida", func: this.returnFunct(12) },
{ text: "25 pida", func: this.returnFunct(25) },
{ text: "50 pida", func: this.returnFunct(50) },
{ text: "100 pida", func: this.returnFunct(100) },
{ text: "200 pida", func: this.returnFunct(200) }] });
}
if (autoStart) {
this.npieces = 25;
this.next();
}
}; // createPuzzle
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// function for menu actions
Puzzle.prototype.returnFunct = function (nbpieces) {
let puz = this;
return function () {
puz.npieces = nbpieces;
puz.next();
};
}; // returnFunct
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Puzzle.prototype.loadImage = function () {
let puz = this;
return function () {
uploadFile(() => {},
{ accept: 'image/*',
readMethod: 'readAsDataURL',
image: puz.image });
};
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Puzzle.prototype.next = function () {
let nx, ny, np, dx, dy, kx, ky, x, y, p1, p2, p3, brd, s1, s2, s3, s4, s5, s6, s7, s8, s9, concav;
/* parameters for the shape of pieces edges
*/
let coeffDecentr = 0.12;
this.canvMobile.style.visibility = 'hidden'; // hide the full picture
// evaluation of number of pieces
this.computenxAndny();
nx = this.nx;ny = this.ny;
// re - evaluation of the dimensions of the picture, leaving a space for pieces on one side
if (this.image.width / this.image.height <
(this.reqWidth - 2 * Puzzle.MARGIN1) / (this.reqHeight - 2 * Puzzle.MARGIN1)) {
/* actual picture "more vertical" than available place
leave place on the right side */
this.width = (this.reqWidth - 2 * Puzzle.MARGIN1) / (nx + 2) * nx;
this.height = this.width / this.image.width * this.image.height;
if (this.height > this.reqHeight - 2 * Puzzle.MARGIN1) {
this.height = this.reqHeight - 2 * Puzzle.MARGIN1;
this.width = this.height * this.image.width / this.image.height;
}
this.freeSpace = 0; // place left on the right
} else {
/* actual picture "more horizontal" than available place
leave place on the bottom side */
this.height = (this.reqHeight - 2 * Puzzle.MARGIN1) / (ny + 2) * ny;
this.width = this.height / this.image.height * this.image.width;
if (this.width > this.reqWidth - 2 * Puzzle.MARGIN1) {
this.width = this.reqWidth - 2 * Puzzle.MARGIN1;
this.height = this.width * this.image.height / this.image.width;
}
this.freeSpace = 1; // place left under
}
let height = this.height,width = this.width;
this.dx = dx = this.width / nx; // horizontal side of tiling
this.dy = dy = this.height / ny; // vertical side of tiling
/* adjust coupling distance to size of tiles */
this.dCoupling = Math.max(10, Math.min(dx, dy) / 10);
// "clean" the board
while (this.divBoard.firstChild) this.divBoard.removeChild(this.divBoard.firstChild);
// but keep the canvMobile
this.divBoard.appendChild(this.canvMobile);
this.canvMobile.width = this.reqWidth;
this.divGame.style.width =
this.divBoard.style.width =
this.canvMobile.width + "px";
this.canvMobile.height = this.reqHeight;
this.divGame.style.height =
this.divBoard.style.height =
this.canvMobile.height + "px";
// compute the shapes of the pieces
/* first, place the corners of the pieces
at some distance of their theorical position, except for edges
*/
let corners = [];
for (ky = 0; ky <= ny; ++ky) {
corners[ky] = [];
for (kx = 0; kx <= nx; ++kx) {
corners[ky][kx] = new Point((kx + alea(-coeffDecentr, coeffDecentr)) * dx, (ky + alea(-coeffDecentr, coeffDecentr)) * dy);
if (kx == 0) corners[ky][kx].x = 0;
if (kx == nx) corners[ky][kx].x = this.width;
if (ky == 0) corners[ky][kx].y = 0;
if (ky == ny) corners[ky][kx].y = this.height;
} // for kx
} // for ky
// Array of raw pieces (straight sides)
this.pieces = [];
for (ky = 0; ky < ny; ++ky) {
this.pieces[ky] = [];
for (kx = 0; kx < nx; ++kx) {
this.pieces[ky][kx] = np = new Piece(kx, ky);
// top side
if (ky == 0) {
np.ts.points = [corners[ky][kx], corners[ky][kx + 1]];
np.ts.type = "d";
} else {
np.ts = this.pieces[ky - 1][kx].bs;
}
// right side
np.rs.points = [corners[ky][kx + 1], corners[ky + 1][kx + 1]];
np.rs.type = "d";
if (kx < nx - 1) {
if (intAlea(2)) // randomly twisted one one side of the side
np.rs.twist(corners[ky][kx], corners[ky + 1][kx], 0.5, 1);else
np.rs.twist(corners[ky][kx + 2], corners[ky + 1][kx + 2], 0.5, 1);
}
// left side
if (kx == 0) {
np.ls.points = [corners[ky][kx], corners[ky + 1][kx]];
np.ls.type = "d";
} else {
np.ls = this.pieces[ky][kx - 1].rs;
}
// bottom side
np.bs.points = [corners[ky + 1][kx], corners[ky + 1][kx + 1]];
np.bs.type = "d";
if (ky < ny - 1) {
if (intAlea(2)) // randomly twisted one one side of the side
np.bs.twist(corners[ky][kx], corners[ky][kx + 1], 1, 0.5);else
np.bs.twist(corners[ky + 2][kx], corners[ky + 2][kx + 1], 1, 0.5);
}
} // for kx
} // for ky
this.associateImage();
}; // function next
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// called when picture is loaded
Puzzle.prototype.associateImage = function () {
let kx, ky, kn, kp;
let div, scale, he, wi, offsx, offsy, pc;
// scale picture
wi = this.image.width;
he = this.image.height;
if (wi / he > this.width / this.height) {// actual picture "more horizontal" than board
scale = this.height / he;
offsy = 0;
offsx = (wi - this.width / scale) / 2; // offset in source picture
} else {// actual picture "more (or equally)horizontal" than board
scale = this.width / wi;
offsx = 0;
offsy = (he - this.height / scale) / 2; // offset in source picture
}
this.mech = { scale: scale, offsx: offsx, offsy: offsy }; // informations for scaling
// creation of pieces
// table of PolyPieces
this.polyPieces = [];
for (ky = 0; ky < this.ny; ky++) {
for (kx = 0; kx < this.nx; kx++) {
this.pieces[ky][kx].createDivPiece(this, scale, offsx, offsy);
this.polyPieces.push(new PolyPiece(this.pieces[ky][kx], this));
} // for kx
} // for ky
// random zindex for initial pieces
arrayShuffle(this.polyPieces);
this.evaluateZIndex();
for (kp = 0; kp < this.polyPieces.length; kp++) {
for (kn = 0; kn < this.polyPieces[kp].pieces.length; kn++) {
pc = this.polyPieces[kp].pieces[kn];
this.divBoard.appendChild(pc.theDiv);
switch (this.freeSpace) {
case 0:pc.pTarget = new Point(this.reqWidth - (2.25 + Math.random() / 4) * this.dx, Math.random() * (this.height - this.dy) - this.dy);break;
case 1:pc.pTarget = new Point(Math.random() * (this.width - this.dx) - this.dx, this.reqHeight - (2.25 + Math.random() / 4) * this.dy);}
// switch
} // for kn
} // for kp
window.setTimeout(function (obj) {return function () {obj.launchAnimation();};}(this), 1000);
}; // Puzzle.prototype.associateImage
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Puzzle.prototype.addRemovableEventListener = function (event, funct) {
this.divBoard.addEventListener(event, funct);
this.listeners.push({ event: event, funct: funct });
}; // Puzzle.prototype.addRemovableEventListener
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Puzzle.prototype.removeAllListeners = function () {
let a;
while (this.listeners.length > 0) {
a = this.listeners.pop();
this.divBoard.removeEventListener(a.event, a.funct);
} // while
}; // Puzzle.prototype.removeAllListeners()
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Puzzle.prototype.launchAnimation = function () {
this.anim = { cpt: autoStart ? 200 : 100 };
this.anim.tmr = window.setInterval(function (puzz) {return function () {puzz.animate();};}(this), 20);
}; // launchAnimation
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Puzzle.prototype.animate = function () {
let kp, kn, pc, act, cib;
if (this.anim.cpt == 0) {
window.clearInterval(this.anim.tmr);
delete this.anim;
this.evaluateZIndex();
this.beginGame();
return;
}
this.anim.cpt--;
for (kp = 0; kp < this.polyPieces.length; kp++) {
for (kn = 0; kn < this.polyPieces[kp].pieces.length; kn++) {
pc = this.polyPieces[kp].pieces[kn];
act = pc.where();
cib = pc.pTarget;
pc.moveTo(new Point((this.anim.cpt * act.x + cib.x) / (this.anim.cpt + 1), (this.anim.cpt * act.y + cib.y) / (this.anim.cpt + 1)));
if (this.anim.cpt == 0) {delete pc.pTarget;}
} // for kn
} // for kp
}; // Puzzle.prototype.animate
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// almost the same as 'animate, mais only to center the picture when game is over
Puzzle.prototype.animateEnd = function () {
let xcou, ycou;
if (this.anim.cpt == 0) {
window.clearInterval(this.anim.tmr);
delete this.anim;
return;
}
this.anim.cpt--;
xcou = parseFloat(this.canvMobile.style.left);
ycou = parseFloat(this.canvMobile.style.top);
this.canvMobile.style.left = (this.anim.cpt * xcou + this.anim.xfin) / (this.anim.cpt + 1) + "px";
this.canvMobile.style.top = (this.anim.cpt * ycou + this.anim.yfin) / (this.anim.cpt + 1) + "px";
}; // Puzzle.prototype.animateEnd
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// merges polyPieces[n2] and polyPieces[n1] into a new piece
// removes those pieces and inserts nes one
// re evaluates z-orders accordingly
// return index of new polyPiece
Puzzle.prototype.merge = function (n1, n2) {
let nppiece, nbpieces, k;
this.polyPieces[n1].merge(this.polyPieces[n2]); // merges pieces
nppiece = this.polyPieces[n1]; // save new piece
if (n1 > n2) {
this.polyPieces.splice(n1, 1);
this.polyPieces.splice(n2, 1);
} else {
this.polyPieces.splice(n2, 1);
this.polyPieces.splice(n1, 1);
}
// will insert nes PolyPiece immediately before the first with less pieces
nbpieces = nppiece.pieces.length;
for (k = 0; k < this.polyPieces.length && this.polyPieces[k].pieces.length >= nbpieces; k++) {;}
// insert new
this.polyPieces.splice(k, 0, nppiece);
return k;
}; // puzzle.prototype.merge
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Puzzle.prototype.evaluateZIndex = function () {
let kp, kn, z;
z = 1;
for (kp = 0; kp < this.polyPieces.length; kp++) {
for (kn = 0; kn < this.polyPieces[kp].pieces.length; kn++) {
this.polyPieces[kp].pieces[kn].theDiv.style.zIndex = z++;
} // for kn
} // for kp
}; // Puzzle.prototype.evaluateZIndex
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// beginning of game
Puzzle.prototype.beginGame = function () {
// record offset between mouse coordinates et board origin
let styl = getComputedStyle(this.divGame);
this.mouseOffsX = this.divGame.offsetLeft + parseFloat(styl.borderLeftWidth);
this.mouseOffsY = this.divGame.offsetTop + parseFloat(styl.borderTopWidth);
this.pieceMove = false; // no selected piece
// set event listeners
this.addRemovableEventListener("mousedown", function (puzzle) {
return function (event) {
puzzle.mouseDownGame(event);};}(this));
this.addRemovableEventListener("mouseup", function (puzzle) {
return function (event) {
puzzle.mouseUpGame(event);};}(this));
this.addRemovableEventListener("mousemove", function (puzzle) {
return function (event) {
puzzle.mouseMoveGame(event);};}(this));
}; // Puzzle.prototype.beginGame
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// mouseDown during game
Puzzle.prototype.mouseDownGame = function (event) {
this.pieceMove = this.lookForPiece(event);
if (this.pieceMove === false) return;
this.emphasize(this.pieceMove.pp);
// we will add to the 'this.pieceMove' object the offset between mousePosition and
// canvMobile position for proper movement of canvMobile when mose moves
this.pieceMove.offsx = event.pageX - this.mouseOffsX - parseFloat(this.canvMobile.style.left);
this.pieceMove.offsy = event.pageY - this.mouseOffsY - parseFloat(this.canvMobile.style.top);
this.divGame.style.cursor = 'move';
}; // Puzzle.prototype.mouseDownGame
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// mouseUp during game
Puzzle.prototype.mouseUpGame = function (event) {
let k, polyP, pc;
this.divGame.style.cursor = 'default';
if (this.pieceMove === false) return;
// hide the canvasMobile which was used for the moving piece
let canvx = parseFloat(this.canvMobile.style.left);
let canvy = parseFloat(this.canvMobile.style.top);
this.canvMobile.getContext("2d").clearRect(0, 0, this.canvMobile.width, this.canvMobile.height);
// display again original pieces
polyP = this.polyPieces[this.pieceMove.pp];
for (k = 0; k < polyP.pieces.length; k++) {
pc = polyP.pieces[k];
pc.moveTo(new Point(this.dx * (pc.kx - 1) + canvx, this.dy * (pc.ky - 1) + canvy));
pc.theDiv.style.visibility = 'visible';
} // for k
// check if moved piece is close enough of another to merge them
// check again with the result of the merge operation
let idp = this.pieceMove.pp;
let yesMerge = false,yesyesMerge = false;
do {
yesMerge = false;
polyP = this.polyPieces[idp];
for (k = 0; k < this.polyPieces.length; k++) {
if (k === idp) continue; // don't check neighborhood with itself !
if (polyP.ifNear(this.polyPieces[k])) {// yes !
idp = this.merge(k, idp); // merge and keep track of index of merged piece
yesMerge = true;yesyesMerge = true; // 2 pieces merging
break; // out of 'for' loop
} // if we found a piece
} // for
} while (yesMerge); // do it again if pieces werge merged
// if no merging, move (if this.polypieces) the selected PolyPiece before
// those with the same number of pieces
if (!yesyesMerge) {
let tmp = this.polyPieces[idp]; // memorize polyPiece
this.polyPieces.splice(idp, 1); // remove from list
for (k = idp; k < this.polyPieces.length && this.polyPieces[k].pieces.length >= tmp.pieces.length; k++);
this.polyPieces.splice(k, 0, tmp); // re-insert at the right place
} // if no merging
this.evaluateZIndex();
this.pieceMove = false;
// won ?
if (this.polyPieces.length > 1) return; // no, continue
// YES ! tell the player
this.removeAllListeners();
// normal image id re-drawn
let ctx = this.canvMobile.getContext("2d");
ctx.drawImage(this.image,
this.mech.offsx, this.mech.offsy,
this.width / this.mech.scale, this.height / this.mech.scale,
0, 0,
this.width, this.height);
this.anim = { cpt: 100, xorg: 0, yorg: 0, xfin: (this.reqWidth - this.dx * this.nx) / 2,
yfin: (this.reqHeight - this.dy * this.ny) / 2 };
this.anim.xorg = parseFloat(this.polyPieces[0].pieces[0].theDiv.style.left) + this.dx;
this.anim.yorg = parseFloat(this.polyPieces[0].pieces[0].theDiv.style.top) + this.dy;
this.canvMobile.style.left = this.anim.xorg + "px";
this.canvMobile.style.top = this.anim.yorg + "px";
// hide pieces
for (k = 0; k < this.polyPieces[0].pieces.length; k++) {
this.polyPieces[0].pieces[k].theDiv.style.visibility = "hidden";
} // for k
// launch final animation
let dist = Math.sqrt(
(this.anim.xorg - this.anim.xfin) * (this.anim.xorg - this.anim.xfin) +
(this.anim.yorg - this.anim.yfin) * (this.anim.yorg - this.anim.yfin));
// we want a speed of about 100 pix / s
// the time increment beeing of 20 ms, this leads to 100 * 0.02 = 2 pix / pass
this.anim.cpt = dist / 2;
// limit the duration to the range 0.25..2s, i.e.12..100 steps
if (this.anim.cpt < 12) this.anim.cpt = 12;
if (this.anim.cpt > 100) this.anim.cpt = 100;
this.anim.cpt = Math.floor(this.anim.cpt);
this.anim.tmr = window.setInterval(function (puzz) {return function () {puzz.animateEnd();};}(this), 20);
}; // Puzzle.prototype.mouseUpGame
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// mouseMove during game
Puzzle.prototype.mouseMoveGame = function (event) {
if (this.pieceMove === false) return;
// for the case where button was released out of 'good' area
if ((event.buttons & 1) == 0) {this.mouseUpGame(event);return;}
let x = event.pageX - this.mouseOffsX;
let y = event.pageY - this.mouseOffsY;
if (x < 2) x = 2;
if (x > Math.floor(parseFloat(this.divBoard.style.width)) - 2) x = Math.floor(parseFloat(this.divBoard.style.width)) - 2;
if (y < 2) y = 2;
if (y > Math.floor(parseFloat(this.divBoard.style.height)) - 2) y = Math.floor(parseFloat(this.divBoard.style.height)) - 2;
this.canvMobile.style.left = x - this.pieceMove.offsx + "px";
this.canvMobile.style.top = y - this.pieceMove.offsy + "px";
}; // Puzzle.prototype.mouseMoveGame
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// searches the pieces whick was clicked on
// event is the click event
// returned value : (index of PolyPiece + piece) or false (if not on a piece)
Puzzle.prototype.lookForPiece = function (event) {
let kp, kn, z;
let x = event.pageX - this.mouseOffsX;
let y = event.pageY - this.mouseOffsY;
for (kp = this.polyPieces.length - 1; kp >= 0; kp--) {
for (kn = this.polyPieces[kp].pieces.length - 1; kn >= 0; kn--) {
if (this.polyPieces[kp].pieces[kn].insidePiece(x, y)) return { pp: kp, pc: kn };
} // for kn
} // for kp
return false; // found nothing
}; // Puzzle.prototype.lookForPiece
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// emphasizes a polyPiece
// its idividualpieces are masked (style.visibility = "hidden")
// but they are collectively drawn on canvMobile
// parameter : polyPiece index
Puzzle.prototype.emphasize = function (npp) {
let kbcl, kc, k;
let ppc = this.polyPieces[npp]; // current PolyPiece
let ctx = this.canvMobile.getContext("2d");
let loops = lookForLoops(ppc.pieces);
let edge;
ctx.save();
ctx.clearRect(0, 0, this.canvMobile.width, this.canvMobile.height);
ctx.beginPath();
for (kbcl = 0; kbcl < loops.length; kbcl++) {
for (kc = 0; kc < loops[kbcl].length; kc++) {
edge = loops[kbcl][kc];
switch (edge.edge) {
case 0:ppc.pieces[edge.kp].ts.drawPath(ctx, 0, 0, false, kc != 0);break;
case 1:ppc.pieces[edge.kp].rs.drawPath(ctx, 0, 0, false, kc != 0);break;
case 2:ppc.pieces[edge.kp].bs.drawPath(ctx, 0, 0, true, kc != 0);break;
case 3:ppc.pieces[edge.kp].ls.drawPath(ctx, 0, 0, true, kc != 0);break;}
} // for kc
} // for kbcl;
// make shadow
ctx.fillStyle = 'none';
ctx.shadowColor = 'rgba(0, 0, 0, 0.5)';
ctx.shadowBlur = 4;
ctx.shadowOffsetX = 4;
ctx.shadowOffsetY = 4;
ctx.fill();
// add image clipped by path
ctx.clip('evenodd');
ctx.drawImage(this.image,
this.mech.offsx, this.mech.offsy,
this.width / this.mech.scale, this.height / this.mech.scale,
0, 0,
this.width, this.height);
// hide original PolyPiece
for (k = 0; k < ppc.pieces.length; k++) {
ppc.pieces[k].theDiv.style.visibility = "hidden";
} // for k
ctx.restore();
// set picture position to hide previous one
this.canvMobile.style.left = ppc.pieces[0].where().x - (ppc.pieces[0].kx - 1) * this.dx + "px";
this.canvMobile.style.top = ppc.pieces[0].where().y - (ppc.pieces[0].ky - 1) * this.dy + "px";
this.canvMobile.style.visibility = 'visible';
}; // emphasize
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// checks if p1 and p2 pieces are close to each other
// dx is -1, 0 or 1 to check left, (top or bottom) or right side of p1
// dy is -1, 0 or 1 to check top, (left or right) or bottom of p2
Puzzle.prototype.near = function (p1, p2, dx, dy) {
let ou1 = p1.where();
let ou2 = p2.where();
if (Math.abs(ou1.x - ou2.x + dx * this.dx) > this.dCoupling) return false;
if (Math.abs(ou1.y - ou2.y + dy * this.dy) > this.dCoupling) return false;
return true;
}; // near
// fin class puzzle
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/* computes the number of lines and columns of the puzzle,
finding the best compromise between the requested number of pieces
and a square shap for pieces
*/
Puzzle.prototype.computenxAndny = function () {
let kx,ky,width = this.image.width,height = this.image.height,npieces = this.npieces;
let err,err2,errmin = 1e9;
let ncv, nch;
let nHPieces = Math.round(Math.sqrt(npieces * width / height));
let nVPieces = Math.round(npieces / nHPieces);
/* based on the above estimation, we will try up to + / - 2 values
and evaluate (arbitrary) quality criterion to keep best result
*/
for (ky = 0; ky < 5; ky++) {
ncv = nVPieces + ky - 2;
for (kx = 0; kx < 5; kx++) {
nch = nHPieces + kx - 2;
err = nch * height / ncv / width;
err = err + 1 / err - 2; // error on pieces dimensions ratio)
err += Math.abs(1 - nch * ncv / npieces); // adds error on number of pieces
if (err < errmin) {// keep smallest error
errmin = err;
this.nx = nch;
this.ny = ncv;
}
} // for kx
} // for ky
}; // computenxAndny
//---------------------------------------------------------------------------- -
//---------------------------------------------------------------------------- -
/* algorithm to determine the boundary of a PolyPiece
input : a table of cells, hopefully defining a 'good' PolyPiece, i.e. all connected together
every cell is given as an object {kx: indice, ky: indice} representing an element of a 2D array.
returned value : table of Loops, because the boundary may be made of several
simple loops : there may be a 'hole' in a PolyPiece
every loop is a list of consecutive edges,
every edge if an object {kp: index, edge: b} where kp is the index of the cell ine
the input array, and edge the side (0(top), 1(right), 2(bottom), 3(left))
every edge contains kx and ky too, normally not used here
*/
function lookForLoops(tbCases) {
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// internal : checks if an edge given by kx, ky is common with another cell
// returns true or false
function edgeIsCommon(kx, ky, edge) {
let k;
switch (edge) {
case 0:ky--;break; // top edge
case 1:kx++;break; // right edge
case 2:ky++;break; // bottom edge
case 3:kx--;break; // left edge
} // switch
for (k = 0; k < tbCases.length; k++) {
if (kx == tbCases[k].kx && ky == tbCases[k].ky) return true; // we found the neighbor
}
return false; // not a common edge
} // function edgeIsCommon
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// internal : checks if an edge given by kx, ky is in tbEdges
// return index in tbEdges, or false
function edgeIsInTbEdges(kx, ky, edge) {
let k;
for (k = 0; k < tbEdges.length; k++) {
if (kx == tbEdges[k].kx && ky == tbEdges[k].ky && edge == tbEdges[k].edge) return k; // found it
}
return false; // not found
} // function edgeIsInTbEdges
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
let tbLoops = []; // for the result
let tbEdges = []; // set of edges which are not shared by 2 pieces of input
let k;
let kEdge; // to count 4 edges
let lp; // for loop during its creation
let currEdge; // current edge
let tries; // tries counter
let edgeNumber; // number of edge found during research
let potNext;
// table of tries
let tbTries = [
// if we are on edge 0 (top)
[
{ dkx: 0, dky: 0, edge: 1 }, // try # 0
{ dkx: 1, dky: 0, edge: 0 }, // try # 1
{ dkx: 1, dky: -1, edge: 3 } // try # 2
],
// if we are on edge 1 (right)
[
{ dkx: 0, dky: 0, edge: 2 },
{ dkx: 0, dky: 1, edge: 1 },
{ dkx: 1, dky: 1, edge: 0 }],
// if we are on edge 2 (bottom)
[
{ dkx: 0, dky: 0, edge: 3 },
{ dkx: -1, dky: 0, edge: 2 },
{ dkx: -1, dky: 1, edge: 1 }],
// if we are on edge 3 (left)
[
{ dkx: 0, dky: 0, edge: 0 },
{ dkx: 0, dky: -1, edge: 3 },
{ dkx: -1, dky: -1, edge: 2 }]];
// create list of not shared edges (=> belong to boundary)
for (k = 0; k < tbCases.length; k++) {
for (kEdge = 0; kEdge < 4; kEdge++) {
if (!edgeIsCommon(tbCases[k].kx, tbCases[k].ky, kEdge))
tbEdges.push({ kx: tbCases[k].kx, ky: tbCases[k].ky, edge: kEdge, kp: k });
} // for kEdge
} // for k
while (tbEdges.length > 0) {
lp = []; // new loop
currEdge = tbEdges[0]; // we begin with first available edge
lp.push(currEdge); // add it to loop
tbEdges.splice(0, 1); // remove from list of available sides
do {
for (tries = 0; tries < 3; tries++) {
potNext = tbTries[currEdge.edge][tries];
edgeNumber = edgeIsInTbEdges(currEdge.kx + potNext.dkx, currEdge.ky + potNext.dky, potNext.edge);
if (edgeNumber === false) continue; // can't here
// new element in loop
currEdge = tbEdges[edgeNumber]; // new current edge
lp.push(currEdge); // add it to loop
tbEdges.splice(edgeNumber, 1); // remove from list of available sides
break; // stop tries !
} // for tries
if (edgeNumber === false) break; // loop is closed
} while (1); // do-while exited by break
tbLoops.push(lp); // add this loop to loops list
} // while tbEdges...
return tbLoops;
} // function lookForLoops
//---------------------------------------------------------------------------- -
window.addEventListener("load", function () {
let img = 'https://wkz3w59.fr/ipcp/Mona_Lisa.jpg';
autoStart = isMiniature(); // used for nice miniature in CodePen
let x = new Puzzle({ img: img,
width: window.innerWidth,
height: window.innerHeight,
idiv: "forPuzzle" });
});
//# sourceURL=pen.js
</script>
</body>