S_DissolveVortex Transitions between two input clips using a vortex warping function. The first clip is warped away and faded out while the second clip is unwarped into place and faded in. The Dissolve Amount parameter should be animated to control the transition speed. In the Sapphire Transitions effects submenu. Inputs: From:  Starts the transition with this clip. To:  Ends the transition with this clip.

Parameters:

Dissolve Amount:   Default: 0,  Range: -0.5 to 1.5.
The transition ratio between the From and To inputs. A value of 0 gives only the From input and a value of 1 gives only the To input. By default this parameter automatically animates from 0 to 1 to perform a complete transition.

Center:   X & Y,   Default: [360 243],  Range: any.
The location of the vortex center in screen coordinates relative to the center of the frame. This parameter can be set by enabling and moving the Center Widget. Note that moving the vortex center can also cause the vortex size to change so that the current value of Wipe Amt remains correct.

Vortex Amount:   Default: 72,  Range: any.
The amount of vortex rotation, in approximate degrees at the edge of the frame.

Rel Amount2:   Default: -1,  Range: any.
The relative amount of the second clip vortex rotation. If this is positive instead of negative the second clip will be unvortexed from the opposite direction.

Rotate Amount:   Default: 0,  Range: any.
If non-zero, a rotation is also added to the warping. Make negative to rotate the inner and outer regions in different directions.

Inner Radius:   Default: 0.042,  Range: 0 or greater.
The radius from the center at which the vortexing is phased in. This can be used to reduce excessive distortion and aliasing at the very center of the vortex.

Slow In:   Default: 0.5,  Range: 0 to 1.
If positive, causes the transition to start more gradually.

Slow Out:   Default: 0.5,  Range: 0 to 1.
If positive, causes the transition to end more gradually.

Wrap:   X & Y,  Popup menu,  Default: [Reflect Reflect].
Determines the method for accessing outside the borders of the source images.

No:  gives black beyond the borders.

Tile:  repeats a copy of the image.

Reflect:  repeats a mirrored copy. Edges are often less visible with this method.

Filter:   Check-box,  Default: on.
If enabled, the image is adaptively filtered when it is resampled. This gives a better quality result when parts of the image are warped smaller.

Crop Input Parameters:   Default: 0,  Range: 0 or greater.
These 4 parameters, Crop Top, Crop Bottom, Crop Left, and Crop Right, allow selecting a rectangular subsection of the input image to be processed. If the Wrap parameters are set to "No" the exposed borders will be transparent. If the Wrap is "Tile" or "Reflect" the source image is wrapped on the new cropped borders to fill the frame. This can make it easier to avoid artifacts due to distorting an image with bad edges.

Show Center: Check-box, Default: on.
Turns on or off the screen user interface for adjusting the Center parameter.

See Also:

DissolveBlur DissolveBubble DissolveDiffuse DissolveFilm DissolveGlow DissolveLuma DissolvePuddle DissolveSpeckle DissolveStatic DissolveWaves

WarpVortex Sapphire Plug-ins Introduction

© 2009, GenArts, Inc. All rights reserved.