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circular gradient module (#1496)

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* circular gradient module

* circular gradient option inside gradient module

* Added test for gradient module

* final shadow module with module test

Co-authored-by: Jeffrey Warren <jeff@unterbahn.com>
This commit is contained in:
Nirav Asher
2020-01-29 01:32:06 +05:30
committed by Jeffrey Warren
parent 8c4c607f2c
commit 9260bc2278
4 changed files with 37 additions and 8 deletions
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26
src/modules/Gradient/Module.js
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@@ -3,6 +3,9 @@ const pixelSetter = require('../../util/pixelSetter.js'),
module.exports = function Gradient(options, UI) {
var defaults = require('./../../util/getDefaults.js')(require('./info.json'));
options.gradientType = options.gradientType || defaults.gradientType;
var output;
// The function which is called on every draw.
@@ -15,11 +18,24 @@ module.exports = function Gradient(options, UI) {
function extraManipulation(pixels) {
const [w, h] = pixels.shape;
for (var i = 0; i < w; i++) {
for (var j = 0; j < h; j++) {
let val = (i / w) * 255;
pixelSetter(i, j, [val, val, val, 255], pixels);
if (options.gradientType === 'linear') {
for (var i = 0; i < w; i++) {
for (var j = 0; j < h; j++) {
let val = (i / w) * 255;
pixelSetter(i, j, [val, val, val, 255], pixels);
}
}
}
else {
for (var i = 0; i < w; i++) {
for (var j = 0; j < h; j++) {
var distX = Math.abs(w / 2 - i);
var distY = Math.abs(h / 2 - j);
var distance = Math.sqrt(Math.pow(distX, 2) + Math.pow(distY, 2));
val = 255 * (distance / pixels.shape[0]);
pixelSetter(i, j, [val, val, val, 255], pixels);
}
}
}