CloudsComp In the S_CloudsComp Plugin. Generates a procedural noise texture, and combines the texture with the background clip. Inputs: Back:  The clip to combine the clouds image with. This may be ignored if the Combine option is set to Clouds Only, but the output clip will default to the same length as this clip.

Parameters:

Frequency:   Default: 2,  Range: 0.01 or greater.
The spatial frequency of the clouds. Increase to zoom out, decrease to zoom in. Very high values of Frequency are clamped internally so the grain size is no smaller than a few pixels. If you want even finer grain use S_Grain or S_Clouds:Perspective instead.

Frequency Rel X:   Default: 0.4,  Range: 0.01 or greater.
The relative horizontal frequency of the texture. Increase to stretch it vertically or decrease to stretch it horizontally.

Octaves:   Integer,  Default: 8,  Range: 1 to 10.
The number of summed layers of noise. Each octave is twice the frequency and half the amplitude of the previous. A single octave gives a smooth texture. Adding octaves makes the result approach a fractal (1/f) noise texture.

Seed:   Default: 0.234,  Range: 0 or greater.
Used to initialize the random number generator. The actual seed value is not significant, but different seeds give different results and the same value should give a repeatable result.

Shift Start:   X & Y,   Default: [0 0],  Range: any,  Shared.
Translation offset of the texture. Since the texture is procedurally generated it can be shifted with no repeating units or seams occurring.

Shift Speed:   X & Y,   Default: [0.5 0],  Range: any,  Shared.
Translation speed of the texture. If non-zero, the result is automatically animated to shift at this rate. The result of animated Speed values may not be intuitive, so for variable speed motion it is usually best to set this to 0 and animate the Shift Start values instead.

Brightness1:   Default: 1,  Range: 0 or greater,  Shared.
Scales the brightness of Color1. Increase for more contrast.

Color1:   Default rgb: [1 1 1],  Shared.
The color of the 'brighter' parts of the texture. The colors of the result are determined by an interpolation between Color0 and Color1.

Color0:   Default rgb: [0 0 0],  Shared.
The color of the 'darker' parts of the texture.

Offset0:   Default: 0,  Range: any,  Shared.
Adds this value to color0. Decrease to a negative value for more contrast.

Combine:   Popup menu,  Default: Screen.
Determines how the texture is combined with the Background.

Clouds Only:  gives only the clouds texture with no Background.

Mult:  the texture is multiplied by the Background.

Add:  the texture is added to the Background.

Screen:  the texture is blended with the Background using a screen operation.

Difference:  the result is the difference between the texture and Background.

Overlay:  the texture is combined with the Background using an overlay function.

Scale Back:   Default: 1,  Range: any,  Shared.
The background brightness is scaled by this value before being combined with the clouds.

See Also:

CloudsPerspectiveComp CloudsVortexComp CloudsMultColorComp CloudsColorSmoothComp CloudsPsykoComp

Clouds

GrainMono Sapphire Plug-ins Introduction

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