Houdini Engine 9.0 Documentation

Table of Contents

1. Overview
2. What's New in HAPI
3. Integration
   1. Important Files
   2. Version
   3. Putting Engine in Version Control
   4. Suggested Steps
4. Fundamentals
   1. Environment Variables
   2. Strings
   3. Return Codes and Error Strings
   4. Initialization and Cleanup
   5. Saving a HIP File
   6. Getting and Setting Server-Side Environment Variables
   7. Check for Specific Errors
5. Licensing
   1. License Requirements
   2. License Checks
6. Sessions
   1. Introduction
   2. In-Process
   3. Out-of-process
   4. HARS (Houdini-Engine API Remote Server)
   5. Multithreading
7. SessionSync
8. Nodes
   1. Nodes Basics
   2. Create, Delete, Connect Nodes
9. Assets
   1. Asset Library Files
   2. Node Creation
   3. Cooking
   4. Transforms
10. Objects
    1. Query
    2. Object Transforms
11. Geos
12. Parts
13. Attributes
    1. About Houdini Attributes
    2. Query Attribute Information
    3. Getting Attribute Values
    4. Adding Attributes
    5. Setting Attribute Values
14. Parameters
    1. Query Parameter Info
    2. Getting Values
    3. Setting Values
    4. Incremental Updates
    5. Tabs and Folders
       1. Radio Button Tabs
    6. Choice Lists
    7. MultiParms
    8. Presets
15. Asset Inputs
    1. Exposing Inputs
    2. Marshalling Geometry Into Houdini
    3. Marshalling Detail Attributes
    4. Marshalling Point Clouds
    5. Connecting Assets
16. Curves
    1. The Curve Node
    2. Curve Output
    3. Curve Marshalling
17. Volumes
    1. Querying
    2. Positioning
    3. Volume Output
    4. Volume Marshalling
18. Instancing
    1. Packed Primitives
    2. Instance OBJ
19. Groups
    1. About Houdini Groups
    2. Query Group Information
    3. Adding Groups
20. Materials
    1. Materials Introduction
    2. Get Material Assignments
    3. Rendering to Image
    4. Extracting Images
       1. Image Manipulation
       2. Image File Formats
       3. Image Planes
       4. Image Extraction
    5. Material Updates
21. Time
    1. Global Time
    2. Timeline Options
22. Handles
23. Intermediate Asset Results
24. Animation Curves
25. Dynamics Simulations
    1. Start Time
    2. Simple Asset
    3. Center Pivot
    4. Working with External Geometry
    5. Outputting the Result to Host
26. Loading a Hip File
27. Caching
    1. Houdini Caches
    2. Geometry Caching
       1. Geometry Files
       2. Geometry Buffers
28. PDG
29. Utility Functions
30. Full Source Samples
    1. Compiling Samples
    2. Asset Inputs Samples
    3. Curves Samples
    4. Groups Sample
    5. Materials Sample
    6. Node Creation Sample
    7. Objects, Geos, and Parts Sample
    8. Packed Primitives Sample
    9. Parameters Sample
31. Development HDA Pack
    1. Development HDA Pack