Cairogradient¶

Descrizione

Questo effetto/filtro disegna un gradiente sopra la sorgente dell’immagine.

Parametri

Parametro	Valore	Descrizione
Motivo	Selezione	Determina il motivo o la direzione del gradiente
Modalità di fusione	Selezione	Determines the mode used to composite gradient and image source
Start Color	Selettore	Primo colore del gradiente
Start Opacity	Virgola mobile	Opacità del primo colore del gradiente
End Color	Selettore	Secondo colore del gradiente
End Opacity	Virgola mobile	Opacità del secondo colore del gradiente
Start / End X	Virgola mobile	Posizione x del punto iniziale e del punto finale del gradiente
Start / End Y	Virgola mobile	Posizione y del punto iniziale e del punto finale del gradiente
Scostamento	Virgola mobile	Position of the first color in the line connecting gradient ends. Really useful only for radial Pattern.

Sono disponibili le seguenti voci di selezione:

Motivo

Lineare	Predefinito
Radiale

Modalità di fusione[1]

normal	È l’attributo predefinito che specifica nessuna fusione. La formula di fusione seleziona semplicemente il colore sorgente.
add
saturate
multiply	The source color is multiplied by the destination color and replaces the destination. The resultant color is always at least as dark as either the source or destination color. Multiplying any color with black results in black. Multiplying any color with white preserves the original color.
screen	Multiplies the complements of the backdrop and source color values, then complements the result. The result color is always at least as light as either of the two constituent colors. Screening any color with white produces white; screening with black leaves the original color unchanged. The effect is similar to projecting multiple photographic slides simultaneously onto a single screen.
overlay	Multiplies or screens the colors, depending on the backdrop color value. Source colors overlay the backdrop while preserving its highlights and shadows. The backdrop color is not replaced but is mixed with the source color to reflect the lightness or darkness of the backdrop.
darken	Selects the darker of the backdrop and source colors. The backdrop is replaced with the source where the source is darker; otherwise, it is left unchanged.
lighten	Selects the lighter of the backdrop and source colors. The backdrop is replaced with the source where the source is lighter; otherwise, it is left unchanged.
colordodge	Brightens the backdrop color to reflect the source color. Painting with black produces no changes.
colorburn	Darkens the backdrop color to reflect the source color. Painting with white produces no change.
hardlight	Multiplies or screens the colors, depending on the source color value. The effect is similar to shining a harsh spotlight on the backdrop.
softlight	Darkens or lightens the colors, depending on the source color value. The effect is similar to shining a diffused spotlight on the backdrop.
difference	Subtracts the darker of the two constituent colors from the lighter color. Painting with white inverts the backdrop color; painting with black produces no change.
exclusion	Produces an effect similar to that of the Difference mode but lower in contrast. Painting with white inverts the backdrop color; painting with black produces no change.
hslhue	Creates a color with the hue of the source color and the saturation and luminosity of the backdrop color.
hslsaturation	Creates a color with the saturation of the source color and the hue and luminosity of the backdrop color. Painting with this mode in an area of the backdrop that is a pure gray (no saturation) produces no change.
hslcolor	Creates a color with the hue and saturation of the source color and the luminosity of the backdrop color. This preserves the gray levels of the backdrop and is useful for coloring monochrome images or tinting color images.
hslluminosity	Creates a color with the luminosity of the source color and the hue and saturation of the backdrop color. This produces an inverse effect to that of the Color mode.