Merge branch 'effect'

2024-02-08 18:06:30 +01:00
parent 29e9dffeda 563760bb25
commit 2719abe6f2
4 changed files with 94 additions and 11 deletions
--- a/src/processing/gray-scale.ts
+++ b/src/processing/gray-scale.ts
@@ -7,3 +7,13 @@ export function grayScale(pixels: Uint8ClampedArray): void {
        pixels[i + 2] = lightness;
    }
 }
+
+export function blackAndWhite(pixels: Uint8ClampedArray): void {
+    for (let i = 0; i < pixels.length; i += 4) {
+        const lightness = (pixels[i] * .299 + pixels[i + 1] * .587 + pixels[i + 2] * .114) | 0;
+        const value = lightness < 128 ? 0 : 255;
+        pixels[i] = value;
+        pixels[i + 1] = value;
+        pixels[i + 2] = value;
+    }
+}