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Sets the standard deviation values used in calculating a Gaussian blur.
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Syntax
HRESULT retVal = object.setStdDeviation(stdDeviationX, stdDeviationY);
Parameters
stdDeviationX [in]
Type: floatThe standard deviation in the x-direction, specified by the ISVGFEGaussianBlurElement::stdDeviationX property.
stdDeviationY [in]
Type: floatThe standard deviation in the y-direction, specified by the ISVGFEGaussianBlurElement::stdDeviationY property.
Return value
Type: HRESULT
This method can return one of these values.
S_OK
Standards information
- Scalable Vector Graphics: Filter Effects, Section 15.25.19
Remarks
If two values are provided, the first value represents a standard deviation value along the x-axis of the coordinate system established by the ISVGFilterElement::primitiveUnits attribute on the filter element. The second value represents a standard deviation along the y-axis.
If one number is provided, then that value is used for both stdDeviationX and stdDeviationY.
Negative values are not allowed.
A value of zero disables the effect of the given filter primitive (that is, the result is the filter input image). If the ISVGFEGaussianBlurElement::setStdDeviation method is zero in only one of stdDeviationX or stdDeviationY, then the effect is that the blur is applied only in the direction that has a non-zero value.
If the ISVGFEGaussianBlurElement::setStdDeviation method is not specified, then the effect is as if a value of zero were specified.