Fast, accurate hidden line views for drafting and visualization

Integrating the HLM (Hidden Line Manager) into your software application will enable your end-users to create high quality hidden line views of parts and assemblies, engineering drawings and technical illustrations.

The HLM generates hidden line views quickly with accurate and reliable results, even on large assemblies and complex freeform surfaces. It is designed to be modeler independent and can even be used on combinations of different model formats in the same application.

The HLM computes hidden line views in a wide range of applications, such as mechanical CAD, industrial styling, architecture, plant, ship design and technical illustration. Our large customer base, with more than one million end-users, drives investment in quality and functionality over the long-term.

Flexible licensing arrangements and a simple integration process enable your organization to add the HLM to your applications quickly and economically. For a step-by-step description of how the HLM is used in an application, view our product tour, or request your own technical overview .

HLM: Key Capabilities

• Computes visible, hidden, occluded, silhouette and outline edge segments. View animation
• Computes parallel or perspective views.
• Can handle interpenetrating parts. View animation
• Many performance optimisations, including incremental computations as parts change shape or position.
• Compatible with most 3D modelling formats.
• Works with any combination of exact, faceted, solid, surface, wireframe, manifold and non-manifold parts.
• Tolerant to models containing errors, such as gaps between adjacent faces.
• Efficient memory usage, including support for part instances and demand driven part loading.
• Flexible integration architecture enables multiple modellers to be used in the same application.