From 79dcec8a2ec2f5cad9be95e5b52fbfa752fb6ac4 Mon Sep 17 00:00:00 2001
From: Maze Winther <mazewinther@gmail.com>
Date: Wed, 29 Apr 2026 18:41:15 +0200
Subject: refactor: split builtin and freeform masks

Made-with: Cursor
---
 .../masks/builtin/definitions/cinematic-bars.ts    | 144 +++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 apps/web/src/masks/builtin/definitions/cinematic-bars.ts

(limited to 'apps/web/src/masks/builtin/definitions/cinematic-bars.ts')

diff --git a/apps/web/src/masks/builtin/definitions/cinematic-bars.ts b/apps/web/src/masks/builtin/definitions/cinematic-bars.ts
new file mode 100644
index 00000000..0e23fd58
--- /dev/null
+++ b/apps/web/src/masks/builtin/definitions/cinematic-bars.ts
@@ -0,0 +1,144 @@
+import type {
+	MaskDefaultContext,
+	MaskDefinition,
+	RectangleMaskParams,
+} from "@/masks/types";
+import {
+	BOX_LIKE_MASK_PARAMS,
+	buildBoxMaskInteraction,
+	computeBoxMaskParamUpdate,
+	getDefaultBaseMaskParams,
+	getStrokeOffset,
+	rotatePoint,
+} from "../box-like";
+
+function getDefaultCinematicBarsMaskParams({
+	elementSize,
+}: MaskDefaultContext): RectangleMaskParams {
+	const absWidth = Math.abs(elementSize?.width ?? 0);
+	const absHeight = Math.abs(elementSize?.height ?? 0);
+	const diagonal =
+		absWidth > 0 && absHeight > 0
+			? Math.sqrt(absWidth ** 2 + absHeight ** 2)
+			: 0;
+	const fullSpanWidth =
+		absWidth > 0 ? diagonal / absWidth : Math.SQRT2;
+
+	return {
+		...getDefaultBaseMaskParams(),
+		centerX: 0,
+		centerY: 0,
+		width: Math.max(fullSpanWidth, 1),
+		height: 0.6,
+		rotation: 0,
+		scale: 1,
+	};
+}
+
+function buildBandPath({
+	centerX,
+	centerY,
+	halfWidth,
+	halfHeight,
+	rotationRad,
+}: {
+	centerX: number;
+	centerY: number;
+	halfWidth: number;
+	halfHeight: number;
+	rotationRad: number;
+}): Path2D {
+	const corners = [
+		{ x: centerX - halfWidth, y: centerY - halfHeight },
+		{ x: centerX + halfWidth, y: centerY - halfHeight },
+		{ x: centerX + halfWidth, y: centerY + halfHeight },
+		{ x: centerX - halfWidth, y: centerY + halfHeight },
+	].map((point) =>
+		rotatePoint({
+			...point,
+			centerX,
+			centerY,
+			rotationRad,
+		}),
+	);
+
+	const path = new Path2D();
+	path.moveTo(corners[0].x, corners[0].y);
+	for (const corner of corners.slice(1)) {
+		path.lineTo(corner.x, corner.y);
+	}
+	path.closePath();
+	return path;
+}
+
+export const cinematicBarsMaskDefinition: MaskDefinition<"cinematic-bars"> = {
+	type: "cinematic-bars",
+	name: "Cinematic Bars",
+	features: {
+		hasPosition: true,
+		hasRotation: true,
+		sizeMode: "height-only",
+	},
+	params: BOX_LIKE_MASK_PARAMS,
+	interaction: buildBoxMaskInteraction({
+		sizeMode: "height-only",
+		buildOverlayPath({ width, height }) {
+			return `M 0,0 H ${width} V ${height} H 0 Z`;
+		},
+	}),
+	buildDefault(context) {
+		return {
+			type: "cinematic-bars",
+			params: getDefaultCinematicBarsMaskParams(context),
+		};
+	},
+	computeParamUpdate: computeBoxMaskParamUpdate,
+	renderer: {
+		body: {
+			kind: "fillPath",
+			buildPath({ resolvedParams, width, height }) {
+				const params = resolvedParams;
+				const centerX = width / 2 + params.centerX * width;
+				const centerY = height / 2 + params.centerY * height;
+				const maskWidth = Math.max(params.width * width, width);
+				const maskHeight = Math.max(params.height, 0.01) * height;
+				const rotationRad = (params.rotation * Math.PI) / 180;
+
+				return buildBandPath({
+					centerX,
+					centerY,
+					halfWidth: maskWidth / 2,
+					halfHeight: maskHeight / 2,
+					rotationRad,
+				});
+			},
+		},
+		stroke: {
+			kind: "strokeFromPath",
+			buildStrokePath({ resolvedParams, width, height }) {
+				const params = resolvedParams;
+				const centerX = width / 2 + params.centerX * width;
+				const centerY = height / 2 + params.centerY * height;
+				const rotationRad = (params.rotation * Math.PI) / 180;
+				const offset = getStrokeOffset({
+					strokeAlign: params.strokeAlign,
+					strokeWidth: params.strokeWidth,
+				});
+
+				return buildBandPath({
+					centerX,
+					centerY,
+					halfWidth: Math.max(
+						Math.max(params.width * width, width) / 2 + offset,
+						1,
+					),
+					halfHeight: Math.max(
+						(Math.max(params.height, 0.01) * height) / 2 + offset,
+						1,
+					),
+					rotationRad,
+				});
+			},
+		},
+	},
+};
-- 
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