Geometric Nodes
Available nodes:
CircleNode
EllipseNode
ArcNode
ArrowNode
StarNode
RingNode
RegularPolygonNode
Examples
engine.nodes.addCircle({ x: 200, y: 200, radius: 80, fill: '#3b82f6' });
engine.nodes.addEllipse({ x: 420, y: 200, radiusX: 90, radiusY: 60, fill: '#ef4444' });
engine.nodes.addStar({ x: 700, y: 220, numPoints: 5, innerRadius: 40, outerRadius: 80, fill: '#f59e0b' });