kollagen/cli/main.ts

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import { parse } from "https://deno.land/std@0.106.0/flags/mod.ts";
import { createCanvas, init } from "https://deno.land/x/canvas/mod.ts";
import { CollageModeType, collageModeType } from "../src/common/collages.ts";
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import DenoCollageModes, {
CastCanvasRenderingContext,
ProxyImage,
} from "./collages.ts";
import { CollageConfig } from "../src/common/types.ts";
import { choice, shuffle } from "../src/common/utils.ts";
const canvasKit = await init();
const args = parse(Deno.args, {
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alias: {
"w": "width",
"h": "height",
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"o": "output",
"m": "mode",
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},
});
if (args["_"].length < 2) {
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console.error("kollagen needs at least 2 images to work.");
Deno.exit(1);
}
const images: ProxyImage[] = (await Promise.all(
args["_"].map(async (imageURL) =>
canvasKit.MakeImageFromEncoded(await Deno.readFile(imageURL.toString()))
),
)).map((image) => new ProxyImage(image!));
const modes = new DenoCollageModes();
const modeKey: CollageModeType = args["mode"] || choice(collageModeType);
const mode = modes.modes[modeKey];
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console.log(
`Creating a "${mode.name}" collage from ${images.length} images...`,
);
console.debug(`Images: ${args["_"].join(", ")}`);
const canvas = createCanvas(args["width"] || 640, args["height"] || 640);
const context = canvas.getContext("2d");
const collageConfig: CollageConfig = {
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numImages: args["n"],
};
const shuffledImages = shuffle(images);
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const segments = mode.getSegments(
context as CastCanvasRenderingContext,
collageConfig,
shuffledImages,
);
mode.place(context as CastCanvasRenderingContext, shuffledImages, segments);
const output = args["output"] || "collage.png";
console.log(`Saving to "${output}"...`);
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await Deno.writeFile(output, canvas.toBuffer());