1 files changed, 73 insertions, 0 deletions
diff --git a/apps/web/src/lib/graphics/definitions/ellipse.ts b/apps/web/src/lib/graphics/definitions/ellipse.ts
new file mode 100644
index 00000000..3fd76608
--- /dev/null
+++ b/apps/web/src/lib/graphics/definitions/ellipse.ts
@@ -0,0 +1,73 @@
+import type { ParamDefinition } from "@/lib/params";
+import { applyAlignedStroke } from "../stroke";
+import { STROKE_ALIGN_PARAM, type GraphicStrokeAlign } from "./shared";
+import type { GraphicDefinition } from "../types";
+
+interface EllipseParams {
+	fill: string;
+	stroke: string;
+	strokeWidth: number;
+	strokeAlign: GraphicStrokeAlign;
+}
+
+const ELLIPSE_PARAMS: ParamDefinition<keyof EllipseParams & 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,
+];
+
+export const ellipseGraphicDefinition: GraphicDefinition = {
+	id: "ellipse",
+	name: "Ellipse",
+	keywords: ["ellipse", "circle", "oval"],
+	params: ELLIPSE_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 inset = strokeAlign === "center" ? strokeWidth / 2 : 0;
+		const centerX = width / 2;
+		const centerY = height / 2;
+		const radiusX = Math.max(1, width / 2 - inset);
+		const radiusY = Math.max(1, height / 2 - inset);
+
+		ctx.clearRect(0, 0, width, height);
+		const path = new Path2D();
+		path.ellipse(centerX, centerY, radiusX, radiusY, 0, 0, Math.PI * 2);
+		ctx.fillStyle = fill;
+		ctx.fill(path);
+
+		if (strokeWidth > 0) {
+			applyAlignedStroke({
+				ctx,
+				path,
+				strokeWidth,
+				strokeAlign,
+				strokeColor: stroke,
+			});
+		}
+	},
+};