39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
import { JimpClassSchema } from "@jimp/types";
|
|
import { clone } from "@jimp/utils";
|
|
import { z } from "zod";
|
|
const DisplaceOptionsSchema = z.object({
|
|
/** the source Jimp instance */
|
|
map: JimpClassSchema,
|
|
/** the maximum displacement value */
|
|
offset: z.number(),
|
|
});
|
|
export const methods = {
|
|
/**
|
|
* Displaces the image based on the provided displacement map
|
|
* @param map the source Jimp instance
|
|
* @param offset
|
|
* @example
|
|
* ```ts
|
|
* import { Jimp } from "jimp";
|
|
*
|
|
* const image = await Jimp.read("test/image.png");
|
|
* const map = await Jimp.read("test/map.png");
|
|
*
|
|
* image.displace(map, 10);
|
|
* ```
|
|
*/
|
|
displace(image, options) {
|
|
const { map, offset } = DisplaceOptionsSchema.parse(options);
|
|
const source = clone(image);
|
|
image.scan((x, y, idx) => {
|
|
let displacement = (map.bitmap.data[idx] / 256) * offset;
|
|
displacement = Math.round(displacement);
|
|
const ids = image.getPixelIndex(x + displacement, y);
|
|
image.bitmap.data[ids] = source.bitmap.data[idx];
|
|
image.bitmap.data[ids + 1] = source.bitmap.data[idx + 1];
|
|
image.bitmap.data[ids + 2] = source.bitmap.data[idx + 2];
|
|
});
|
|
return image;
|
|
},
|
|
};
|
|
//# sourceMappingURL=index.js.map
|