### 6.5. Odblesk s prelivi

#### 6.5.1. Pregled

Slika 17.116. Example for the Gradient Flare filter

Original image

Filter applied

Gradient Flare effect reminds the effect you get when you take a photograph of a blinding light source, with a halo and radiations around the source. The Gradient Flare image has three components: Glow which is the big central fireball, Rays and Second Flares

| Opomba
If the image is in indexed mode, this menu entry is disabled.

#### 6.5.2. Activating the Filter

This filter is found in the main menu under Filters → Light and Shadow → Gradient Flare….

#### 6.5.3. Možnosti

The Settings tab allows you to set manually the parameters while the Selector tab let you choose presets in a list.

Predogled

  When Auto update preview is checked, parameter setting results are interactively displayed in preview without modifying the image until you click on OK button.

##### 6.5.3.1. Nastavitve

Slika 17.117. “Gradient Flare” filter options (Settings)

Center

  You can set the X and Y (pixels) coordinates using the input box or by clicking in the preview. The coordinate origin is at the upper left corner.

Parametri
  Radij

    The radius of the effect. The slider limits the range of possible values, but using the input box you can enter greater values.

  Rotation

    Turn the effect.

  Zasuk obarvanosti

    Change the tint (color) of the effect.

  Kot vektorja

    Turn the Second flares.

  Dolžina vektorja

    Vary the distance applied for the Second flares.

Prilagajoče nadvzorčenje

  When enabled, adaptive supersampling, an anti-aliasing technique, is used when rendering the image. See Nadvzrorčenje for more information.

  Enabling this setting activates the following options that can be used to adjust the supersampling.

  Max depth

    Specifies the maximum depth for supersampling. This determines the number of samples used. Higher values may produce better results, but can potentially slow down the computation.

  Threshold

    Specifies the lower threshold of pixel difference that stops supersampling.

##### 6.5.3.2. Izbirnik

Slika 17.118. “Gradient Flare” filter options (Selector)

The Selector tab allows you to select a Gradient Flare pattern, to change it and save it.

Nov

  When you click on this button, you create a new Gradient Flare pattern. Give it a name of your choice.

Uredi

  This button brings up the Gradient Flare Editor (see below).

Kopiraj

  This button allows you to duplicate selected Gradient Flare pattern. You can edit the copy without altering the original.

Izbriši

  This button deletes the selected Gradient Flare pattern.

#### 6.5.4. Urejevalnik odbleska s prelivi

The Gradient Flare Editor is also organized in tabs:

##### 6.5.4.1. Splošno

Slika 17.119. “Gradient Flare Editor” options (General)

Možnosti slikanja odbleska
  Prekrivnost

    Slider and input box allows you to reduce glow opacity (0-100).

  Način risanja

    You can choose between four modes:

    Normal

      In this mode, the glow covers the image without taking into account what is beneath.

    Addition

      Pixel RGB values of glow are added to RGB values of the corresponding pixels in the image. Colors get lighter and white areas may appear.

    Prekrij

      Light/Dark areas of glow enhance corresponding light/dark areas of image.

    Screen

      Dark areas of image are enlightened by corresponding light areas of glow. Imagine two slides projected onto the same screen.

Možnosti slikanja žarkov

  Options are the same as for GlowPaintOptions.

Second Flare Paint Options

  Options are the same as for GlowPaintOptions.

##### 6.5.4.2. Glow

Slika 17.120. “Gradient Flare Editor” options (Glow)

Prelivi

  By clicking on the rectangular buttons, you can develop a long list of gradients. “%” gradients belong to the Editor.

  Krožen preliv

    The selected gradient is drawn radially, from center to edge.

  Kotni preliv

    The selected gradient develops around center, counter-clockwise, starting from three o'clock if the Rotation parameter is set to 0. Radial and angular gradients are combined according to the Multiply mode: light areas are enhanced and colors are mixed according to CMYK color system (that of your printer).

  Angular size gradient

    This is a gradient of radius size which develops angularly. Radius is controlled according to gradient Luminosity: if luminosity is zero (black), the radius is 0%. If luminosity is 100% (white), the radius is also 100%.

Parametri
  Velikost (%)

    Sets size of glow in percent (0-200).

  Rotation

    Sets the origin of the angular gradient (-180 +180).

  Zasuk obarvanosti

    Sets glow color, according to the HSV color wheel (-180 +180). (Cf. The triangle color selector.)

##### 6.5.4.3. Žarki

Slika 17.121. “Gradient Flare Editor” options (Rays)

Prelivi

  The options are the same as for Glow.

Parametri

  The first three options are the same as in Glow. Two are new:

  # žarkov

    This option determines the number of spikes (1-300) but also their texture.

  Debelina žarkov

    When spikes get wider (1-100), they look like flower petals.

##### 6.5.4.4. Sekundarni odbleski

Slika 17.122. “Gradient Flare Editor” options (Second Flares)

Prelivi

  The options are the same as for Glow.

Parametri

  The options are the same as for Glow.

Oblika sekundarnih odbleskov

  Second flares, these satellites of the main flare, may have two shapes: Circle and Polygon. You can set the Number polygon sides. The option accepts 1 side (!), not 2.

Naključno seme, New Seed

  This option controls the randomness of the filter. The Random seed box lets you manually enter a seed for the randomization algorithm used. You can also generate a random seed by pressing the New Seed button. If the same random seed is used in the same situation, the filter produces exactly the same results. A different random seed produces different results.

Naključno

  When you click on this button, you produce a random seed that will be used by the random generator. It is each time different.

6.4. Odblesk leče |  | 6.6. Svetlobni učinki

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