Livelli vettoriali

Cos’è un livello vettoriale?

Un livello vettoriale, conosciuto anche come Livello forma, è un tipo di livello che contiene soltanto elementi grafici vettoriali.

The vector layer appear in Krita’s Layers docker with the following icon right to the layer thumbnail.

About Vector Graphics & Raster Images

Krita is primarily a Raster Graphics editing tool, which means that most of the editing changes the values of the pixels on the raster that makes up the image.

A Vector Graphics editing tool will use mathematics to describe shapes. Shapes can be edited at any time (modified, deleted). Because it uses formulas, vector graphics can be resized to any size without any “pixel” or “blur” effect.

Vector Graphics are useful to generate logo and banners. They’re also useful to manipulate and render texts (a vector graphic text can be edited where a rasterized text can’t).

Creare un livello vettoriale

In Layers docker, click on dropdown arrow right to the Add layer button; this will popup a sub-menu with the Add Vector Layer entry.

Default shortcut to create a new vector layer is Shift + Ins.

Creazione di forme

When active layer is a vector layer, the following tools can be used to create vector shapes.

Forme vettoriali specializzate

Krita provides differents specialized vector shapes tools:

• Strumento Calligrafia

• Strumento Ellisse (also allow to create pie shapes)

• Strumento Rettangolo (also allow to create rounded rectangle shapes)

Forme di tracciato

Krita provides differents paths shapes tools:

• Strumento Curva di Bézier

• Strumento Tracciato a mano libera

• Strumento Linea retta

• Strumento Poligono

• Strumento Polilinea

Forme di testo

• Strumento Testo

Import of SVG document

In addition, you can import a Scalable Vector Graphic (SVG):

• Paste a SVG content copied from another software like Inkscape for example

• Open a SVG file in a new document, edit Vector Layer content, copy/paste it or copy/paste shapes from it

Disposizione delle forme

A vector layer has its own hierarchy of shapes, also named z-Order.

When a Vector Layer is rendered, shapes are drawn from the bottom to the top:

z-Order Visualization of shapes

Rendered image from shapes

The z-Order of shapes can be modified in 2 way:

• From Docker Arrange

• From context menu, accessible with

Both provides the same functions:

• Bring to Front: move z-Order position to the top

• Raise: move z-Order position on step up

• Lower: move z-Order position on step down

• Send to Back: move z-Order position to the bottom

Red square has been «Bring to front»

Selecting Shapes

To manipulate shapes, you need to select them with the Strumento Selezione forme .

The Strumento Selezione forme also provides access to options to manage shape geometry, stroke and fill properties.

Modifica del contorno delle forme

Outline for a shape can be edited with the Strumento Modifica forme .

Rendering Vector Layer content

By default, vector layer content are rendered using an anti-aliasing algorithm.

• In the Layers docker the vector layer icon indicates the anti-aliasing is disabled

  On blue vector shapes, you can see aliased pixels in magnified view
• In the Layers docker the vector layer icon indicate the anti-aliasing is enabled

  On pink vector shapes, you can see anti-aliased pixels in magnified view