Open Inventor Algorithm modules

The InvAlgorithms module provides useful algorithms for arithmetic operations, data conversions, data extraction, etc.

Inventor algorithm modules hierarchy

can be used on any type of SoBufferObject :

• SoArithmetic : The arithmetic class provides methods to perform arithmetic operations on buffer objects like Add, Mult, Scale, etc.
• SoConversion : The conversion class provides methods to perform data type conversions on buffer objects. For example to convert a buffer of bytes to a buffer of floats.
• SoConvolution : The convolution class provides methods to perform separable convolutions on the data stored in a buffer object.
• SoSeismic : The seismic class provides methods specific to seismic trace data, for example computing complex trace attributes on a buffer of data. The class SoAlgorithms is a class designed to provide generic access to algorithms developed for specific hardware using a “plugin” mechanism described in the following section.

Algorithm modules for specific hardware

The InvAlgorithms module provides a mechanism to develop different versions of the algorithms for specific hardware. This mechanism is provided by the class SoAlgorithms.

SSE support for CPU algorithms

The standard algorithms, provided by the InvAlgorithms module, use the SSE2 instruction set for fast conversions (used internally for example by the SoDataRange node in VolumeViz). SSE2 instructions are used by default but it’s possible to disable this by setting the preference OIV_NO_SSE to 1.