codebase overhaul (#697)

1 files changed, 87 insertions, 0 deletions

diff --git a/apps/web/src/services/renderer/nodes/sticker-node.ts b/apps/web/src/services/renderer/nodes/sticker-node.ts
new file mode 100644
index 00000000..5af13a6f
--- /dev/null
+++ b/apps/web/src/services/renderer/nodes/sticker-node.ts
@@ -0,0 +1,87 @@
+import type { CanvasRenderer } from "../canvas-renderer";
+import { BaseNode, type BaseNodeParams } from "./base-node";
+import type { Transform } from "@/types/timeline";
+
+const STICKER_EPSILON = 1 / 1000;
+
+export type StickerNodeParams = BaseNodeParams & {
+	iconName: string;
+	duration: number;
+	timeOffset: number;
+	trimStart: number;
+	trimEnd: number;
+	transform: Transform;
+	opacity: number;
+	color?: string;
+};
+
+export class StickerNode extends BaseNode<StickerNodeParams> {
+	private image?: HTMLImageElement;
+	private readyPromise: Promise<void>;
+
+	constructor(params: StickerNodeParams) {
+		super(params);
+		this.readyPromise = this.load();
+	}
+
+	private async load() {
+		const image = new Image();
+		this.image = image;
+		const color = this.params.color
+			? `&color=${encodeURIComponent(this.params.color)}`
+			: "";
+		const url = `https://api.iconify.design/${this.params.iconName}.svg?width=200&height=200${color}`;
+
+		await new Promise<void>((resolve, reject) => {
+			image.onload = () => resolve();
+			image.onerror = () =>
+				reject(new Error(`Failed to load sticker: ${this.params.iconName}`));
+			image.src = url;
+		});
+	}
+
+	private getStickerTime(time: number) {
+		return time - this.params.timeOffset + this.params.trimStart;
+	}
+
+	private isInRange(time: number) {
+		const stickerTime = this.getStickerTime(time);
+		return (
+			stickerTime >= this.params.trimStart - STICKER_EPSILON &&
+			stickerTime < this.params.trimStart + this.params.duration
+		);
+	}
+
+	async render({ renderer, time }: { renderer: CanvasRenderer; time: number }) {
+		await super.render({ renderer, time });
+
+		if (!this.isInRange(time)) {
+			return;
+		}
+
+		await this.readyPromise;
+
+		if (!this.image) {
+			return;
+		}
+
+		const { transform, opacity } = this.params;
+		const size = 200 * transform.scale;
+		const x = renderer.width / 2 + transform.position.x - size / 2;
+		const y = renderer.height / 2 + transform.position.y - size / 2;
+
+		renderer.context.save();
+		renderer.context.globalAlpha = opacity;
+
+		if (transform.rotate !== 0) {
+			const centerX = x + size / 2;
+			const centerY = y + size / 2;
+			renderer.context.translate(centerX, centerY);
+			renderer.context.rotate((transform.rotate * Math.PI) / 180);
+			renderer.context.translate(-centerX, -centerY);
+		}
+
+		renderer.context.drawImage(this.image, x, y, size, size);
+		renderer.context.restore();
+	}
+}