mirror/pixel-editor
1
0
Fork 0
mirror of https://github.com/lospec/pixel-editor.git synced 2023-08-10 21:12:51 +03:00
Code Issues Projects Releases Wiki Activity

Finished ellipse tool

Browse Source
This commit is contained in:
Nicola
2022-01-23 13:32:23 +01:00
parent f78d99053b
commit cc460446b6
4 changed files with 55 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
js/Util.js
View File

@ -1,6 +1,37 @@
// Acts as a public static class
class Util {
/** Pastes the source image data on the destination image data, keeping the pixels where the
* source image data is transparent
*
* @param {*} source
* @param {*} destination
*/
static pasteData(underlyingImageData, pasteData, finalContext) {
for (let i=0; i<underlyingImageData.data.length; i+=4) {
let currentMovePixel = [
pasteData.data[i], pasteData.data[i+1], pasteData.data[i+2], pasteData.data[i+3]
];
let currentUnderlyingPixel = [
underlyingImageData.data[i], underlyingImageData.data[i+1],
underlyingImageData.data[i+2], underlyingImageData.data[i+3]
];
// If the pixel of the clipboard is empty, but the one below it isn't, I use the pixel below
if (Util.isPixelEmpty(currentMovePixel)) {
if (!Util.isPixelEmpty(currentUnderlyingPixel)) {
pasteData.data[i] = currentUnderlyingPixel[0];
pasteData.data[i+1] = currentUnderlyingPixel[1];
pasteData.data[i+2] = currentUnderlyingPixel[2];
pasteData.data[i+3] = currentUnderlyingPixel[3];
}
}
}
finalContext.putImageData(pasteData, 0, 0);
}
/** Tells if a pixel is empty (has alpha = 0)
*
* @param {*} pixel