S_CloudsMultColor Generates a procedural noise texture like S_Clouds and tints the colors using an additional color noise texture. The Shift Speed parameters cause the texture to automatically translate over time. In the Sapphire Render effects submenu. Inputs: Background:  Optional.   The clip to combine the clouds image with. This may be ignored if the Combine option is set to Clouds Only.

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.

Color Amount:   Default: 0.5,  Range: 0 or greater.
The amplitude of the color tinting.

Color Freq:   Default: 1,  Range: 0.01 or greater.
The frequency of the colors. Increase for finer color variation, decrease for softer color changes.

Color Freq Relx:   Default: 0.4,  Range: 0.01 or greater.
The relative horizontal frequency of the colors. Increase to stretch vertically, decrease to stretch horizontally.

Color Octaves:   Integer,  Default: 1,  Range: 1 to 10.
The number of octaves of color noise to include. Each octave is twice the frequency and half the amplitude of the previous.

Color Seed:   Default: 0.345,  Range: 0 or greater.
The random number generator seed to use for the color noise. The actual seed value is not significant, but different values give different results.

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

Shift Speed:   X & Y,   Default: [0.5 0],  Range: any.
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.

Brightness:   Default: 1,  Range: 0 or greater.
Scales the brightness of the result.

Color:   Default rgb: [1 1 1].
Scales the color of the result.

Offset:   Default: 0,  Range: -8 to 2.
Adds this gray value to the result (or subtracts if negative). 0 has no effect, .5 is middle gray, and 1 is white.

Bg Brightness:   Default: 1,  Range: 0 or greater.
The background brightness is scaled by this value before being combined with the clouds.

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.

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

See Also:

Clouds CloudsPerspective CloudsVortex CloudsColorSmooth CloudsPsyko

Grain Sapphire Plug-ins Introduction

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