S_WarpPerspective Transforms the source clip onto a 3D plane with perspective. Adjust the Latitude, Swing, and Roll parameters to rotate the image on various axes, and adjust Shift and Z Dist to translate and zoom. Turn off the Wrap options to give a single non-repeated copy of the image. In the Sapphire Distort effects submenu. Inputs: Source:  The current layer.   The input clip to be warped. Matte:  Defaults to None.   If provided, the amplitude of warping is scaled by the values of this input clip. Gray values internally scale the warping amplitude rather than simply cross-fading between the effect and the original source to allow more continuous results at the matte edges and more detailed control over the warping amounts. This input can be affected using the Blur Matte, Invert Matte, or Matte Use parameters.

Parameters:

Latitude:   Default: 35,  Range: -89 to 89.
Positive latitude tilts the image down and negative tilts it up. Keep latitude in the range of around -35 to 35 degrees to avoid aliasing towards the horizon.

Swing:   Default: 0,  Range: any.
Rotation of the image in degrees in its initial frame.

Roll:   Default: 0,  Range: any.
Tilts the result from side to side, in degrees.

Z Dist:   Default: 3,  Range: 0.001 or greater.
Scales the 'distance' of the image. Values greater than 1.0 move it farther away and make it smaller. Values less then 1.0 move the image closer and enlarge it.

Tele Lens Width:   Default: 1,  Range: 0.2 to 3.
The amount of lens telescoping. Increase to zoom in with less perspective, decrease for a wider viewing angle with more perspective.

Shift Orig:   X & Y,   Default: [0 0],  Range: any.
Translates the image in its initial frame.

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

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.

Blur Matte:   Default: 0,  Range: 0 or greater.
Blurs the Matte input by this amount before using. This can provide a smoother transition between the matted and unmatted areas. It has no effect unless the Matte input is provided.

Invert Matte:   Check-box,  Default: off.
If on, inverts the Matte input so the effect is applied to areas where the Matte is black instead of white. This has no effect unless the Matte input is provided.

Matte Use:   Popup menu,  Default: Luma.
Determines how the Matte input channels are used to make a monochrome matte.

Luma:  the luminance of the RGB channels is used.

Alpha:  only the Alpha channel is used.

Opacity:   Popup menu,  Default: Normal.
Determines the method used for dealing with opacity/transparency.

All Opaque:  Use this option to render slightly faster when the input image is fully opaque with no transparency (alpha=1).

Normal:  Process opacity normally.

As Premult:  Process as if the image is already in premultiplied form (colors have been scaled by opacity). This option also renders slightly faster than Normal mode, but the results will also be in premultiplied form, which is sometimes less correct. If your image has sharp color changes where the matte channel also has sharp edges, you may get better results with Normal mode.

See Also:

WarpTransform WarpVortex WarpWaves WarpWaves2 WarpPuddle WarpBubble WarpBubble2 WarpFishEye WarpPuff WarpPolar WarpRepeat WarpChroma

CloudsPerspective Sapphire Plug-ins Introduction

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