Images are made up of a stack of layers. Layers are edited using the layers panel on the right.
They can be created and deleted using the two buttons at the bottom of the panel.
Layers can be rearranged up or down using a handle on the right. To toggle visibility or locked-ness of a layer, click the corresponding icons next to the handle.
The name of a layer can be edited by double clicking on it.
Each layer comes with its own mask. If the mask is empty (does not contain any shapes), it will not mask anything.
To add shapes to a mask, click on the mask preview in the layer list. Once selected, creating a shape will put it into the mask instead of the layer itself.
Shapes in the mask are greyscale. A black shape in the mask will block that region of the layer 100%, white blocks 0%.
Shapes can be created using the Create, Rectangle, Ellipse and Text tool. Many of the tools change behaviour when the shift or control keys are pressed.
The properties panel is used to change a shapes fill, stroke, stroke-width etc.
Individual anchors of a shape can simply be dragged around, or deleted with a right-click. To add new anchors, select the "Create" tool with the shape selected.
Double-clicking a shape focuses it. While in focus mode, multiple anchors can be selected and moved together.
Palettes are used to give images a consistent color theme. hilbert comes preloaded with a few default palettes which can be selected and edited in the palette panel on the right.
To load a palette, click the folder icon. To edit a palette after editing it, enter a name in the 'save as' field and click the save icon.
Colors can be added to a palette using the plus icon. To change a color, select it and choose a new color in the color picker. Right-clicking a color removes it from the palette.