Related Functions: ufoProcessGetParamValues, ufoProcessGetStringParamValue
double ufoProcessGetParamValue( ufoProcess process_instance, int param_index, ufoChannelIndex channel_index);
Refer to the following table for command descriptions:
|
Command |
Description |
param_index |
index (0..number_parameters-1) of parameter |
channel_index |
index of channel from which current value will be returned (usually 0) |
ufoChannelIndex |
see ufoTypes.h for complete set of definitions for channel indices |
Get parameter values(s) at the current time. Use ufoProcessGetParamValues for getting multiple values for parameters which have more than one channel. Use ufoProcessGetStringParamValue to get the current value of a ufoStringParam parameter, and returns a character string allocated with malloc which the UFO has the responsibility to free.
ufoProcessGetParamValue(s) and ufoProcessGetStringParamValue may be called within ufoProcessRenderPixel, ufoProcessRenderLine, ufoProcessRenderRectangle, ufoProcessCanAvoidRendering, ufoProcessPreRender, ufoProcessPostRender, ufoProcessPreRenderPass, ufoProcessPostRenderPass, ufoProcessCalcDefinedRectangle, ufoProcessCalcNeedRectangles, ufoProcessCalcDefinedPixelTypes, ufoProcessSpecifyConvertPixelTypes, and from within any editor user function or event function in the editor GUI.
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