### 7.9. Diàleg Simetria de pintura

La pintura de simetria és compatible amb eines basades en el pinzell (llapis, pinzell, goma d'esborrar, aerògraf, pinzell MyPaint, clona, empastifa, aclareix/crema), així com l'eina tinta. Hi ha diversos tipus de simetria, totes configurables.

#### 7.9.1. Activeu el diàleg

Podeu accedir a aquest diàleg des del menú principal: Finestres → Diàlegs d'acoblament → Simetria de pintura

El diàleg «Simetria de pintura» és un diàleg acoblable. Mireu Secció 2.3, «Diàlegs i acobladors» per a obtenir més informació.

#### 7.9.2. Ús del diàleg Simetria de pintura

Figura 15.142. Diàleg Simetria de pintura

Aquest diàleg és molt senzill. Només teniu un element Simetria amb una llista desplegable que ofereix quatre opcions. Quan verifiqueu un tipus de simetria, els eixos de simetria apareixen com a línies verdes puntejades a la finestra d'imatge; podeu començar a pintar-hi amb el pinzell que heu triat.

Opcions

Symmetry

  This setting determines the type of symmetry painting.

  Cap

    This is the default. It disables symmetry painting.

  Mirall

    Figura 15.143. The Symmetry Mirror dialog

    This type of symmetry will reflect all strokes like in a mirror. There are several types of mirroring. More than one type can be selected.

    Mirror Options

    Horizontal symmetry

      Brush strokes will be mirrored across a horizontal axis.

    Vertical symmetry

      Brush strokes will be mirrored across a vertical axis.

    Central symmetry

      Brush strokes will be inverted through a central point.

    Disable brush transform

      When you transform the drawing, the brush itself will end up transformed as well. For instance, in a mirror transform, not only will your drawing on the right side of the canvas be mirrored on the left, but the brush itself is also «flipped» on the left.

      If you want the drawn lines to be mirrored (or other transformation), but not the brush outline itself, enable this setting. Obviously, you will only notice the effect of this setting when you use a brush that is not symmetrical.

    Vertical axis position, Horizontal axis position

      The default position for symmetry axes is the center of the image. These sliders allow you to change the position used to mirror your brush strokes.

      By clicking the lock icon next to the sliders, you can choose whether you want to keep both sliders synchronized or not.

  Enrajolat

    «Tiling» is a translational symmetry, which can be finite (with a maximum of strokes) or infinite. In the latter case, it is the perfect tool to create patterns or seamless tiles.

    Figura 15.144. El diàleg Simetria d'enrajolat

    This mode covers the image with strokes at regular distances on the X and Y axis.

    Tiling Options

    Interval X, Interval Y

      These are the intervals on the X and Y axis, in pixels, between the centers of each stroke.

    Maj

      This determines the amount of shift between lines on the X axis, in pixels.

    Max strokes X, Max strokes Y

      These are the maximum number of brush strokes on the X and Y axis that will be painted on the image. The default is 0, which means there is no limit.

      By clicking the lock icon next to the sliders, you can choose whether you want to keep both sliders synchronized or not.

  Mandala

    Figura 15.145. El diàleg Simetria de mandala

    Strokes are drawn around the center determined by the options below.

    Mandala Options

    Center abscissa, Center ordinate

      These coordinates determine the center around which the mandala strokes will be painted.

      By clicking the lock icon next to the sliders, you can choose whether you want to keep both sliders synchronized or not.

    Number of points

      This determines the amount of strokes that will be performed each time you use a brush.

    Disable brush transform

      See the same setting for Mirror symmetry.

    Kaleidoscope

      When enabled, it mirrors consecutive strokes.

#### 7.9.3. Exemples

El pinzell de pebrot està seleccionat. S'utilitza el llapis.

Exemple de mirall

  Figura 15.146. Simetria vertical

  Un sol clic

  Una pinzellada

Exemple d'enrajolat

  Figura 15.147.

  Un sol clic. Maj = 20.

  Una pinzellada

Exemple de mandala

  Figura 15.148.

  Un sol clic

  Una pinzellada

7.8. Diàleg del punter |  | 7.10. Diàleg de la drecera de teclat

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