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yfiles-nodestyle-advanced

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Implements advanced node style features including viewport culling (isVisible), custom bounds (getBounds), and group node styles. Optimizes rendering performance and handles hierarchical visualization. Use when implementing viewport culling, custom bounds, group nodes, or when user mentions "isVisible", "getBounds", "group node", "viewport culling", or "rendering optimization".

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Advanced Node Style Features

Implement viewport culling, custom bounds, and group node styles.

Quick Start

export class AdvancedNodeStyle extends NodeStyleBase {
  protected isVisible(
    context: ICanvasContext,
    rectangle: Rect,
    node: INode
  ): boolean {
    // Only render if node intersects viewport
    return node.layout.toRect().intersects(rectangle)
  }

  protected getBounds(context: ICanvasContext, node: INode): Rect {
    // Return actual rendering bounds (including badges, etc.)
    return node.layout.toRect().getEnlarged(10)
  }
}

Before Implementing

Always query yFiles MCP for current API:

yfiles:yfiles_get_symbol_details(name="NodeStyleBase")
yfiles:yfiles_list_members(name="NodeStyleBase")
yfiles:yfiles_search_documentation(query="group node style")
yfiles:yfiles_get_symbol_details(name="INode")

Core Concepts

  • isVisible(): Viewport culling for performance
  • getBounds(): Actual rendering bounds
  • Group nodes: Hierarchical container nodes
  • Folding: Collapsible groups

When to Implement

  • isVisible(): Custom shapes extending beyond layout
  • getBounds(): Rendering beyond layout bounds (badges, shadows)
  • Group styles: Hierarchical graph visualization

Note: When implementing yFiles interfaces, always use BaseClass() wrapper instead of TypeScript implements. The @yfiles/eslint-plugin rule @yfiles/fix-implements-using-baseclass enforces this pattern.

Code Examples

See examples.md for:

  • Viewport culling optimization
  • Custom bounds with badges
  • Group node styles
  • Folder tab rendering

Reference

See reference.md for:

  • isVisible() optimization strategies
  • getBounds() calculation patterns
  • Group node API
  • Performance considerations

Related Skills

  • /yfiles-nodestyle-basic - Start here
  • /yfiles-nodestyle-configure - Configuration
  • /yfiles-nodestyle-interaction - Hit testing

MCP Tools

  • yfiles:yfiles_get_symbol_details(name="INode") - Node API
  • yfiles:yfiles_search_by_description(query="group node") - Group nodes
  • yfiles:yfiles_search_documentation(query="folding") - Collapsible groups