refactor: restructure files to their domains, new preview overlay system, and dep graph

1 files changed, 211 insertions, 0 deletions

diff --git a/apps/web/src/graphics/definitions/polygon.ts b/apps/web/src/graphics/definitions/polygon.ts
new file mode 100644
index 00000000..11273fed
--- /dev/null
+++ b/apps/web/src/graphics/definitions/polygon.ts
@@ -0,0 +1,211 @@
+import type { ParamDefinition } from "@/params";

+import { applyAlignedStroke } from "../stroke";

+import { STROKE_ALIGN_PARAM, type GraphicStrokeAlign } from "./shared";

+import type { GraphicDefinition } from "../types";

+

+interface Point {

+	x: number;

+	y: number;

+}

+

+interface PolygonParams {

+	fill: string;

+	stroke: string;

+	strokeWidth: number;

+	strokeAlign: GraphicStrokeAlign;

+	sides: number;

+	cornerRadius: number;

+}

+

+const POLYGON_PARAMS: ParamDefinition<keyof PolygonParams & string>[] = [

+	{

+		key: "fill",

+		label: "Fill",

+		type: "color",

+		default: "#ffffff",

+	},

+	{

+		key: "stroke",

+		label: "Color",

+		type: "color",

+		default: "#000000",

+		group: "stroke",

+	},

+	{

+		key: "strokeWidth",

+		label: "Width",

+		type: "number",

+		default: 0,

+		min: 0,

+		max: 64,

+		step: 1,

+		shortLabel: "W",

+		group: "stroke",

+	},

+	STROKE_ALIGN_PARAM,

+	{

+		key: "sides",

+		label: "Sides",

+		type: "number",

+		default: 5,

+		min: 3,

+		max: 12,

+		step: 1,

+		shortLabel: "S",

+	},

+	{

+		key: "cornerRadius",

+		label: "Corner radius",

+		type: "number",

+		default: 0,

+		min: 0,

+		max: 50,

+		step: 1,

+		shortLabel: "R",

+	},

+];

+

+function buildPolygonVertices({

+	centerX,

+	centerY,

+	radius,

+	sides,

+}: {

+	centerX: number;

+	centerY: number;

+	radius: number;

+	sides: number;

+}): Point[] {

+	return Array.from({ length: sides }, (_, index) => {

+		const angle = -Math.PI / 2 + (index * Math.PI * 2) / sides;

+		return {

+			x: centerX + Math.cos(angle) * radius,

+			y: centerY + Math.sin(angle) * radius,

+		};

+	});

+}

+

+function distance({ a, b }: { a: Point; b: Point }): number {

+	return Math.hypot(a.x - b.x, a.y - b.y);

+}

+

+function normalize(point: Point): Point {

+	const length = Math.hypot(point.x, point.y) || 1;

+	return {

+		x: point.x / length,

+		y: point.y / length,

+	};

+}

+

+function traceRoundedPolygonPath({

+	path,

+	vertices,

+	radius,

+}: {

+	path: Path2D;

+	vertices: Point[];

+	radius: number;

+}): void {

+	if (vertices.length < 3) {

+		return;

+	}

+

+	if (radius <= 0) {

+		path.moveTo(vertices[0].x, vertices[0].y);

+		for (let index = 1; index < vertices.length; index++) {

+			path.lineTo(vertices[index].x, vertices[index].y);

+		}

+		path.closePath();

+		return;

+	}

+

+	for (let index = 0; index < vertices.length; index++) {

+		const previous = vertices[(index - 1 + vertices.length) % vertices.length];

+		const current = vertices[index];

+		const next = vertices[(index + 1) % vertices.length];

+		const toPrevious = normalize({

+			x: previous.x - current.x,

+			y: previous.y - current.y,

+		});

+		const toNext = normalize({

+			x: next.x - current.x,

+			y: next.y - current.y,

+		});

+		const angle = Math.acos(

+			Math.max(-1, Math.min(1, toPrevious.x * toNext.x + toPrevious.y * toNext.y)),

+		);

+		const maxOffset =

+			Math.min(distance({ a: previous, b: current }), distance({ a: current, b: next })) / 2;

+		const tangentOffset = Math.min(radius / Math.tan(angle / 2), maxOffset);

+		const start = {

+			x: current.x + toPrevious.x * tangentOffset,

+			y: current.y + toPrevious.y * tangentOffset,

+		};

+		const end = {

+			x: current.x + toNext.x * tangentOffset,

+			y: current.y + toNext.y * tangentOffset,

+		};

+

+		if (index === 0) {

+			path.moveTo(start.x, start.y);

+		} else {

+			path.lineTo(start.x, start.y);

+		}

+

+		path.arcTo(

+			current.x,

+			current.y,

+			end.x,

+			end.y,

+			Math.min(radius, maxOffset),

+		);

+	}

+

+	path.closePath();

+}

+

+export const polygonGraphicDefinition: GraphicDefinition = {

+	id: "polygon",

+	name: "Polygon",

+	keywords: ["polygon", "triangle", "pentagon", "hexagon", "diamond"],

+	params: POLYGON_PARAMS,

+	render({ ctx, params, width, height }) {

+		const fill = String(params.fill ?? "#ffffff");

+		const stroke = String(params.stroke ?? "#000000");

+		const strokeWidth = Math.max(0, Number(params.strokeWidth ?? 0));

+		const strokeAlign = (params.strokeAlign ?? "center") as GraphicStrokeAlign;

+		const sides = Math.max(3, Math.min(12, Math.round(Number(params.sides ?? 5))));

+		const inset = strokeAlign === "center" ? strokeWidth / 2 : 0;

+		const radius = Math.max(1, Math.min(width, height) / 2 - inset);

+		const maxCornerRadius = radius * Math.sin(Math.PI / sides);

+		const cornerRadiusPercent = Math.max(0, Number(params.cornerRadius ?? 0));

+		const cornerRadius =

+			maxCornerRadius * Math.min(cornerRadiusPercent, 50) / 50;

+		const vertices = buildPolygonVertices({

+			centerX: width / 2,

+			centerY: height / 2,

+			radius,

+			sides,

+		});

+

+		ctx.clearRect(0, 0, width, height);

+		const path = new Path2D();

+		traceRoundedPolygonPath({

+			path,

+			vertices,

+			radius: cornerRadius,

+		});

+		ctx.fillStyle = fill;

+		ctx.fill(path);

+

+		if (strokeWidth > 0) {

+			applyAlignedStroke({

+				ctx,

+				path,

+				strokeWidth,

+				strokeAlign,

+				strokeColor: stroke,

+			});

+		}

+	},

+};