Applies a Gaussian blur effect to an input source.
The BlurFX class performs a Gaussian blur, or approximation thereof, on the input source. The Gaussian blur kernel is an approximation of the normalized convolution G(x,y) = H(x)I(y) where H(x) = exp(-x2/ (2s2)) / sqrt(2* pi*s2) and I(y) = exp(-y2/ (2t2)) / sqrt(2* pi*t2) with 's' being the standard deviation in the x direction and 't' being the standard deviation in the y direction, as specified by SX and SY.
At least one of SX or SY should be greater than 0, otherwise no rendering is performed.
The BlurFX class consists of the following fields:
Access | Name | Type | Comment |
|---|---|---|---|
| SX | DOUBLE | The standard deviation of the blur on the x axis. | |
The (SX,SY) field values define the standard deviation of the gaussian blur along each axis. If either value is 0 or less, the effect is disabled on that axis. | |||
| SY | DOUBLE | The standard deviation of the blur on the x axis. | |
The (SX,SY) field values define the standard deviation of the gaussian blur along each axis. If either value is 0 or less, the effect is disabled on that axis. | |||
| XMLDef | STRING | Returns an SVG compliant XML string that describes the effect. | |
The following actions are currently supported:
| Draw | Draws object graphics to drawable areas. | |||||||||||
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ERR acDraw(*Object, DOUBLE X, DOUBLE Y, DOUBLE Width, DOUBLE Height)
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