with npm, do:
npm i --save observ-ndarray
an ObservNdarray is an observable version of an ndarray, every mutation of the array or mutation of an observable element in the array will cause the ObservNdarray to emit a new changed ndarray.
var ObservStruct = require('observ-struct');
var ObservNdarray = require('observ-ndarray');
var Observ = require('observ');
var Ndarray = require('ndarray');
var rgbHex = require('rgb-hex');
var kuler = require('kuler');
function createPixel (red, green, blue) {
return ObservStruct({
red: Observ(red),
green: Observ(green),
blue: Observ(blue),
});
}
var state = ObservStruct({
grid: ObservNdarray(new Ndarray([
createPixel(255, 0, 0),
createPixel(0, 255, 0),
createPixel(0, 0, 255),
createPixel(0, 255, 255),
createPixel(255, 255, 0),
createPixel(255, 255, 255),
createPixel(255, 0, 0),
createPixel(0, 255, 0),
createPixel(0, 0, 255),
], [3, 3])),
});
state(function (currState) {
// currState.grid is an ndarray
// currState.grid.get(0, 0) is a plain object
for (var i = 0; i < currState.grid.shape[0]; i++) {
for (var j = 0; j < currState.grid.shape[1]; j++) {
var pixel = currState.grid.get(i, j);
var color = rgbHex(pixel.red, pixel.green, pixel.blue);
process.stdout.write(kuler('•').style(color));
}
process.stdout.write('\n');
}
});
state.grid.get(0, 0).red.set(255);
console.log("---");
state.grid.get(0, 0).green.set(255);
console.log("---");
state.grid.get(0, 0).blue.set(255);