adminoo/explorata
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refresh rate, some attempts at optimizing

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adminoo
2022-12-20 16:27:04 +01:00
parent 7fb9ed8958
commit 9fe16c8406
3 changed files with 28 additions and 25 deletions
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12
src/modules/automata.js
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@ -1,14 +1,14 @@
// handles negative index and index bigger than its array length
function guard(index, array) {
if (index > array.length - 1) return 0;
if (index < 0) return array.length - 1;
function guard(index, arrayLength) {
if (index > arrayLength - 1) return 0;
if (index < 0) return arrayLength - 1;
return index;
}
// get the next evolution of a 1D CA initial state
function evolve1d(state, rules) {
function getCell(index) {
const safeIndex = guard(index, state);
const safeIndex = guard(index, state.length);
return state[safeIndex];
}
const newState = state.map((_, x) => {
@ -55,8 +55,8 @@ function getCellNeighbors(board, cellCoordinates) {
// handles board edges where the cell is missing neighbors
function getCell(xx, yy) {
const safeX = guard(xx, board);
const safeY = guard(yy, rowLength);
const safeX = guard(xx, board.length);
const safeY = guard(yy, rowLength.length);
return board[safeX][safeY];
}

17
src/modules/picture.js
View File

@ -54,13 +54,16 @@ export function picToBoard(pixels, width, height) {
export function boardToPic(board, width, height, cellProperties) {
const live = cellProperties.liveColor;
const dead = cellProperties.deadColor;
return board.flat().reduce((acc, cell, index) => {
const color = cell === 1 ? hexToRGB(live) : hexToRGB(dead);
const img = new ImageData(width, height);
const colors = [hexToRGB(live), hexToRGB(dead)];
board.flat().reduce((acc, cell, index) => {
const color = colors[cell];
const i = index * 4;
acc.data[i] = color[0];
acc.data[i + 1] = color[1];
acc.data[i + 2] = color[2];
acc.data[i + 3] = 255;
acc[i] = color[0];
acc[i + 1] = color[1];
acc[i + 2] = color[2];
acc[i + 3] = 255;
return acc;
}, new ImageData(width, height));
}, img.data);
return img;
}