Share via

ITransformProperty::CalcValueAtTime

  • Article

The CalcValueAtTime method calculates the property value at a particular time, using the evaluation function type that was specified for the property.

Syntax

HRESULT get_Type(
  double  dblTime,
  PROPVARIANT*  varCalculatedValue
);

Parameters

dblTime

[in]  The time at which to calculate the property value. This should be within the time scale specified in the XML initialization file (typically from 0.0 to 1.0).

varCalculatedValue

[out]  Pointer to the value at the specified time. This value can be either a single value of any acceptable type, or an array of up to 4 float elements (type VT_R4 | VT_VECTOR).

Return Values

The method returns an HRESULT of S_OK for success, or a standard COM error code for failure.

Requirements

Client: Windows Vista

Header: Include gputransformplugin.h and GPUPipelineTime.h.

Library: Use GPUPipelineVC7.lib (for Visual Studio .NET) or GPUPipelineVC8.lib (for Visual Studio 2005).

See Also