ppfun/pixelplanet
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Code Issues 24 Pull Requests Releases 2 Activity

optimize padding

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This commit is contained in:
HF 2022-06-20 00:49:38 +02:00
parent 43fafb7a0e
commit 6dc283765c
1 changed files with 8 additions and 7 deletions
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15
src/ui/ChunkRGB.js
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@ -40,19 +40,20 @@ class ChunkRGB {
}
// from Uint8Array
fromBuffer(chunkBufferInpt) {
let chunkBuffer = chunkBufferInpt;
const neededLength = TILE_SIZE ** 2;
if (chunkBuffer.byteLength < neededLength) {
chunkBuffer = new Uint8Array(neededLength);
chunkBuffer.set(chunkBufferInpt);
}
fromBuffer(chunkBuffer) {
const imageData = new ImageData(TILE_SIZE, TILE_SIZE);
const imageView = new Uint32Array(imageData.data.buffer);
const colors = this.palette.buffer2ABGR(chunkBuffer);
colors.forEach((color, index) => {
imageView[index] = color;
});
const neededLength = TILE_SIZE ** 2;
let padding = chunkBuffer.byteLength;
const background = this.palette.abgr[0];
while (padding < neededLength) {
imageView[padding] = background;
padding += 1;
}
const ctx = this.image.getContext('2d');
ctx.putImageData(imageData, 0, 0);
this.ready = true;