human/src/draw/gesture.ts

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2022-04-11 17:45:24 +02:00
import { mergeDeep } from '../util/util';
import { getCanvasContext } from './primitives';
import { options } from './options';
import type { GestureResult } from '../result';
import type { AnyCanvas, DrawOptions } from '../exports';
/** draw detected gestures */
export async function gesture(inCanvas: AnyCanvas, result: Array<GestureResult>, drawOptions?: Partial<DrawOptions>) {
const localOptions = mergeDeep(options, drawOptions);
if (!result || !inCanvas) return;
if (localOptions.drawGestures) {
const ctx = getCanvasContext(inCanvas);
if (!ctx) return;
ctx.font = localOptions.font;
ctx.fillStyle = localOptions.color;
let i = 1;
for (let j = 0; j < result.length; j++) {
let where: unknown[] = []; // what&where is a record
let what: unknown[] = []; // what&where is a record
[where, what] = Object.entries(result[j]);
if ((what.length > 1) && ((what[1] as string).length > 0)) {
const who = where[1] as number > 0 ? `#${where[1]}` : '';
const label = `${where[0]} ${who}: ${what[1]}`;
if (localOptions.shadowColor && localOptions.shadowColor !== '') {
ctx.fillStyle = localOptions.shadowColor;
ctx.fillText(label, 8, 2 + (i * localOptions.lineHeight));
}
ctx.fillStyle = localOptions.labelColor;
ctx.fillText(label, 6, 0 + (i * localOptions.lineHeight));
i += 1;
}
}
}
}