DropShadow Generates a shadow on the Back clip using the Matte clip, then composites the Front over the Back to give the final result. Inputs: Front:  foreground clip to composite over the background. Back:  The clip to use as background. Matte:  Specifies the opacities of the Front clip. Only the red channel of this input is used.

Parameters:

Shift:   X & Y,   Default: [10 -10],  Range: any.
The horizontal and vertical offset of the shadow, in pixels. This parameter can be adjusted using the Shift Widget.

Blur:   Default: 0.1,  Range: 0 or greater.
Determines the softness of the shadow.

Color:   Default rgb: [0 0 0].
The color of the shadow.

Opacity:   Default: 1,  Range: 0 or greater.
The opacity of the shadow, use values near 0 for subtle transparent shadows, or values near 1.0 for stronger shadows.

Front Opacity:   Default: 1,  Range: 0 or greater.
Scales the opacity of the Front input without affecting the shadow. Lowering this can be used to fade out the foreground, or setting it to zero prevents the foreground from being composited over the result at all.

Comp Premult:   Check-box,  Default: off.
Enable this for a better composite if the Foreground pixel colors have been pre-multiplied by their Matte values. This is also known as an 'additive' composite.

Invert Matte:   Check-box,  Default: off.
If enabled, the black and white of the Foreground alpha channel are inverted before use.

See Also:

Blur Sapphire Plug-ins Introduction

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