3D ACIS Modeler

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3D ACIS Modeler
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ACIS 2005

• ACIS is the commercial modeler product of Spatial
  and Dassault Systemes
• Development continues to expand
• Quality and performance increases with each
  release
• Growing business, as indicated by continued
  interest and development

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3D Modeling Goals - Strategic

• Commercial Partner Growth
• Satisfy the specific needs of current partners
  necessary to support their growth
• Core Technology
• Continuous improvement of the ACIS core modeling
  structures to maximize Modeler robustness,
  performance, and extensibility
• Competitive Strength
• Identify and address competitive deficiencies,
  and build on existing competitive advantages
  (functionality and performance)
• Increase Product Portfolio
• Seek out and deliver additional technologies
  needed by our partners

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R15 Highlights

• A brief review of major improvements made to ACIS
  in R15

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Local Operations Adaptive Offsetting

• New ability to offset surfaces with
• Local areas of high curvature
• Small Non-G1 discontinuities
• Geometric singularities
• Illegal parameterization

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Skinning / Lofting with Lateral Edge Tangency
Control

• Improved shape produced by Skinning and Lofting
  when the input is a set of tangent curves.

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Blending Improvement

• New ability to process Edge Blends when Sidecap
  faces intersect Miters

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Remove Faces

• Performance Improvement
• Eliminated old n2 algorithm, no more forever
  solutions which seem like a hang
• Removed some limitations around free edges
• More details in the LOPS presentation

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Other Improvements in R15

• Performance gain in entity box calculations
  (spline surfaces)
• Improved performance and robustness in mass
  properties calculations
• HA/Bridge enhanced to allow silhouette picking
• Tolerant Modeling improvement smoother, tighter
  TCOEDGE generation algorithm
• New platform support for Microsoft Windows XP
  Professional x64 Edition (certified on AMD
  Opteron )

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ACIS Functionality
Complexity
Feature Modeling
Etc
Surface Modeling Application
Solid Modeling Application
ACIS
Surface Modeling
Styling
Solid Modeling
Sculpting
Functionality
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ACIS Architecture

• Written in C
• Open, object-oriented architecture
• Easily extensible
• Ease of adoption
• Enables bringing featureand functionalityto
  market rapidly andcost-effectively
• Platforms supported
• Windows
• Linux
• UNIX
• Macintosh

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Innovative Features Functionality

• Sweeping
• Skinning/lofting
• Blending
• Local Operations
• Shelling
• Warping
• Cellular Topology
• Patterns
• More..

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Developing with ACIS

• Application development environment
• Designed for extensibility and usability
• Provides tools to rapidly integrate ACIS into
  your application
• History Management
• Attributes
• Annotations
• and more

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Pervasive SAT Format

• Open file format
• Provides data exchangebetween ACIS applications
  without data translation
• Backwards compatible
• ACIS is used on moredesktops than any other
  modeler
• HOOPS/ACIS 3D Part Viewer

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Quality Philosophy

• Underlying philosophy for all Spatial software
  subsystems and services
• Quality-driven, continuous improvement approach

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3D ACIS PHL V5

• Accurate 2D representations of 3D models ideal
  for technical illustration, manufacturing and
  architecture
• Based on same industrial-strength Hidden Line
  Removal (HLR) technology used in CATIA V5
• Twice as fast as legacy PHL Husk, with greater
  accuracy
• Direct modeler interface for ACIS-enabled
  applications
• Windows and UNIX support

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Edge and Silhouette Classification

• Analyzes surface and solid models to determine
  which lines and line styles to draw
• Visible
• Hidden
• Occluded

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Exact or Polyline Edge B-Representation

• Curve representation
• Provides access to actual curve data or provides
  a polyline approximation for less detail
• Thickening/thinning
• Displays exterior edges as
• "thick" and interior lines as "thin
• Smoothing
• Eliminates irrelevant contour lines

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Adjustable Levels of Accuracy

• PHL V5 automatically calibrates hidden line
  calculation accuracy based on model extents
• Level of accuracy can be manipulated by users
  needing higher level of control

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3D Deformable Modeling

• Interactive curve and surface manipulation tool
• Results in precisioncurves and fairsurfaces
• Available for ACISand non-ACIS-enabledapplicatio
  ns

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3D Deformable Modeling

• Intuitive creation of free-form NURBS
• Constraints, forcesand pressures
• Supports default shapes
• Supports hierarchicalpatches
• Allow for control of position,tangent, and
  continuitybetween surfaces

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Thank You.