painbrush

Index: package/src/color/brush.ts
===================================================================
--- package/src/color/brush.ts
+++ package/src/color/brush.ts
@@ -1,34 +0,0 @@
-import type { LayerMeta } from "../layer.ts";
-import { getPixelXYCoords } from "../pixel.ts";
-import { type Color, COLOR_ALPHA, COLOR_BLACK } from "./utils.ts";
-
-/**
-Anything that paints on a layer is a brush function. Brushes get the pixel position and layer metadata and decide what color to paint.
-
-Normally you just wanna use a solid color and theres solidFillBrush for that. check out other builtins in this file.
-*/
-export type Brush = (index: number, layer: LayerMeta) => Color;
-
-export const solidFillBrush =
-  (color: Color): Brush =>
-  () =>
-    color;
-
-export const borderBrush =
-  (
-    size: number = 1,
-    borderColor: Color = COLOR_BLACK,
-    innerColor: Color = COLOR_ALPHA,
-  ): Brush =>
-  (index, layer) => {
-    const { x, y } = getPixelXYCoords(index, layer);
-    if (y < size || layer.height - size <= y) {
-      return borderColor;
-    }
-    if (x < size || layer.width - size <= x) {
-      return borderColor;
-    }
-    return innerColor;
-  };
-
-export const alphaBrush = (): Brush => () => COLOR_ALPHA;