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drawing.js
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drawing.js
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function createGrid () {
ctx.strokeStyle = gridBorderColor;
ctx.beginPath();
for(let i = 0; i <= width; i += size) {
ctx.moveTo(i, 0);
ctx.lineTo(i, height);
ctx.stroke();
}
for(let j = 0; j < height; j += size) {
ctx.moveTo(0, j);
ctx.lineTo(width, j)
}
ctx.stroke();
ctx.closePath();
}
function gridClicked (mouseX, mouseY) {
let gridX = Math.floor(mouseX / size);
let gridY = Math.floor(mouseY / size);
if (gridPoints[gridX][gridY] == 0){
ctx.fillStyle = gridFillColor;
ctx.fillRect(size*gridX, size*gridY, size, size);
(gridPoints[gridX])[gridY] = 1;
}
else {
ctx.fillStyle = gridEmptyColor;
ctx.fillRect(size*gridX, size*gridY, size, size);
(gridPoints[gridX])[gridY] = 0;
}
createGrid();
}
function transitionToEmpty (startTime) {
timeNow = new Date().getTime();
if (timeNow > startTime + timeToClear) {
ctx.fillStyle = gridEmptyColor;
ctx.fillRect(0, 0, width, height);
stage = 2;
} else {
let heightOfBox = (timeNow - startTime) * height / (timeToClear);
ctx.fillStyle = gridEmptyColor;
ctx.fillRect(0, 0, width, heightOfBox);
}
}
function clearGrid() {
ctx.fillStyle = gridEmptyColor;
ctx.fillRect(0, 0, width, height);
}
function setTypes () {
for (i = 0; i < gridLenX; i ++) {
for (j = 0; j < gridLenY; j++) {
if (gridPoints[i][j] == 1){
pointTypes[i][j][0] = 1;
pointTypes[i][j-1][2] = 1;
pointTypes[i][j+1][1] = 1;
pointTypes[i-1][j][4] = 1;
pointTypes[i+1][j][3] = 1;
}
}
}
}
function createCenters () {
ctx.beginPath();
for (i = 0; i < gridLenX; i ++) {
for (j = 0; j < gridLenY; j ++) {
if (pointTypes[i][j][0]) {
//create center
ctx.moveTo(size*i + size / 2, size * j + size / 2 - centerSize / 2);
ctx.lineTo(size*i + size / 2 + centerSize / 2, size * j + size / 2);
ctx.lineTo(size*i + size / 2, size * j + size / 2 + centerSize / 2);
ctx.lineTo(size*i + size / 2 - centerSize / 2, size * j + size / 2);
ctx.lineTo(size*i + size / 2, size * j + size / 2 - centerSize / 2);
// create edges
ctx.moveTo(size*i, size*j + centerSize / 2);
ctx.lineTo(size*i + centerSize / 2, size*j);
ctx.moveTo(size*i + size - centerSize / 2, size*j);
ctx.lineTo(size*i + size, size*j + centerSize / 2);
ctx.moveTo(size*i + size, size*j + size - centerSize / 2);
ctx.lineTo(size*i + size - centerSize / 2, size*j + size);
ctx.moveTo(size*i, size*j + size - centerSize / 2);
ctx.lineTo(size*i + centerSize / 2, size*j + size);
// create spokes
if (pointTypes[i][j][1]) {
ctx.moveTo(size*i + size / 2, size*j + size / 2 - centerSize / 2);
ctx.lineTo(size*i + centerSize / 2, size*j);
}
if (pointTypes[i][j][4]) {
ctx.moveTo(size*i + size / 2 + centerSize / 2, size*j + size / 2);
ctx.lineTo(size*i + size, size*j + centerSize / 2);
}
if (pointTypes[i][j][2]) {
ctx.moveTo(size*i + size / 2, size*j + size / 2 + centerSize / 2);
ctx.lineTo(size*i + size - centerSize / 2, size*j + size);
}
if (pointTypes[i][j][3]) {
ctx.moveTo(size*i + size / 2 - centerSize / 2, size*j + size / 2);
ctx.lineTo(size*i, size*j + size - centerSize / 2);
}
}
}
}
ctx.stroke();
ctx.closePath();
}
function createBorders () {
for (i = 0; i < gridLenX; i ++) {
for (j = 0; j < gridLenY; j ++) {
if (pointTypes[i][j][0] == 0){
if (pointTypes[i][j][1]) {
ctx.beginPath();
ctx.arc(size*i + size / 2, size*j - size / 2 + centerSize / 2, radius, Math.PI / 4, 3*Math.PI / 4);
ctx.stroke();
}
if (pointTypes[i][j][2]) {
ctx.beginPath();
ctx.arc(size*i + size / 2, size*j + 3 * size / 2 - centerSize / 2, radius, 5*Math.PI / 4, 7*Math.PI / 4);
ctx.stroke();
}
if (pointTypes[i][j][4]) {
ctx.beginPath();
ctx.arc(size*i + 3 * size / 2- centerSize / 2, size*j + size / 2, radius, 3*Math.PI / 4, 5*Math.PI / 4);
ctx.stroke();
}
if (pointTypes[i][j][3]) {
ctx.beginPath();
ctx.arc(size*i - size / 2 + centerSize / 2, size*j + size / 2, radius, 7*Math.PI / 4, 9*Math.PI / 4);
ctx.stroke();
}
}
}
}
}