### 7.9. Dialogen Mal symmetrisk

Mal symmetrisk understøttes af penselbaserede værktøjer (blyant, pensel, viskelæder, airbrush, MyPaint-pensel, kloning, udtværing, lysne) samt blækværktøjet. Der er flere former for symmetri, som alle kan konfigureres.

#### 7.9.1. Aktivér dialogen

Du kan få adgang til denne dialog fra hovedmenuen via: Vinduer → Dokbare dialoger → Mal symmetrisk.

Dialogen “Mal symmetrisk” kan dokkes. Se Afsnit 2.3, “Dialoger og dokning” vedrørende dokke.

#### 7.9.2. Brug af dialogen Mal symmetrisk

Figur 15.142. Dialogen Mal symmetrisk

Dialogen er meget enkel. Du har kun et Symmetri-element med en rulleliste, der tilbyder fire muligheder. Så snart du markerer en symmetritype, vises symmetriakserne som stiplede grønne linjer i billedvinduet, og du kan begynde at male med den valgte pensel.

Indstillinger

Symmetry

  This setting determines the type of symmetry painting.

  Ingen

    This is the default. It disables symmetry painting.

  Spejl

    Figur 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.

  Fliselægning

    “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.

    Figur 15.144. Dialogen for fliselægningssymmetri

    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.

    Skift

      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

    Figur 15.145. Dialogen for mandalasymmetri

    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. Eksempler

Penslen Pepper (peberfrugt) er valgt. Blyant anvendes.

Eksempel på spejl

  Figur 15.146. Lodret symmetri

  Et enkelt klik

  Et penselstrøg

Eksempel på fliselægning

  Figur 15.147.

  Et enkelt klik. Skift = 20.

  Et penselstrøg

Eksempel på mandala

  Figur 15.148.

  Et enkelt klik

  Et penselstrøg

7.8. Dialogen markør |  | 7.10. Dialogen Tastaturgenveje

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