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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,33 +1,38 @@ | ||
| import { useEffect, useState } from "react" | ||
| import { OGLRenderingContext, Texture, Color } from "ogl" | ||
| import { OGLRenderingContext, Texture } from "ogl" | ||
| import Color from "colorjs.io" | ||
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| export function useGradientTexture(gl: OGLRenderingContext, colors: string[]) { | ||
| export function useGradientTexture(gl: OGLRenderingContext, colors: string[], quantization: number) { | ||
| const [texture] = useState(() => new Texture(gl, { minFilter: gl.NEAREST, magFilter: gl.NEAREST })) | ||
| const [canvas] = useState(() => document.createElement("canvas")) | ||
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| useEffect(() => { | ||
| if (!colors.length) return | ||
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| const pixels = new Uint8ClampedArray(colors.length * 4) | ||
| quantization = Math.max(2, quantization) | ||
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| const list = new Color(colors[0]).steps(colors[1], { steps: quantization, space: "hsl", outputSpace: "srgb" }) | ||
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| const pixels = new Uint8ClampedArray(list.length * 4) | ||
| for (let i = 0; i < pixels.length; i += 4) { | ||
| const color = new Color(colors[i / 4]) | ||
| const color = list[i / 4] | ||
| pixels[i] = color.r * 255 | ||
| pixels[i + 1] = color.g * 255 | ||
| pixels[i + 2] = color.b * 255 | ||
| pixels[i + 3] = 255 | ||
| } | ||
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| canvas.width = colors.length | ||
| canvas.width = list.length | ||
| canvas.height = 1 | ||
| const ctx = canvas.getContext("2d") | ||
| // ctx.putImageData(pixels, 0, 0) | ||
| ctx?.putImageData(new ImageData(pixels, colors.length, 1), 0, 0) | ||
| ctx?.putImageData(new ImageData(pixels, list.length, 1), 0, 0) | ||
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| texture.image = pixels | ||
| texture.width = colors.length | ||
| texture.width = list.length | ||
| texture.height = 1 | ||
| texture.update() | ||
| }, [texture, canvas, colors]) | ||
| }, [texture, canvas, colors, quantization]) | ||
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| return { texture } | ||
| } |