Snowcapped Grids
The Snowcapped editor is build based on the layout of the vanilla overworld: Biomes are laid out in a grid of input values. Each grid cell can be individually filled with the biome to generate. To allow an easier editing process of this 6d-grid the grid is split into 3 stages:
From the bottom to the top:
A list of biomes that can be assigned to generate at different places. You can add more (i.e. custom) Biomes by clicking the ⊕ button. Custom biomes can be assigned a custom color by clicking the color rectangle next to their name.
Layouts specify a biome based on humidity, temperature, and a binary "Mode". To open a Layout for editing, right click it in the left sidebar. Use the ⊕ button to add a new Layout.
The layouts are a grid, each grid cell can be filled with a Biome to be used in that grid cell. Select a Biome for painting by left clicking the biome in the sidebar, then left click the grid cell to paint it.
Instead of painting a biome, you can also refrence a different Layout by selecting the other layout for painting with left click. This will result in the biome used by that layout. If you then update the referenced layout the used biome will update in both layouts. You can right click on a reference in the grid to open the referenced layout.
To paint based on the "Mode", hold Ctrl while painting, this will only paint one triangle. When using the layout later you will be able to select which mode of the layout you want.
To modify the input values of the grid borders - and to add or remove columns or rows - click the "Edit Layout Grid" butten.
Below is the vanilla "Middle" Layout that is used in normal (flat) areas of the world:
Slices are one layer above Layouts. They define which Layout (or Biome) to use based on erosion, continentalness, and the "Mode". Open a slice with right click
Slices can be painted with Biomes and Layouts. As before use left click to select a Layout or Biome to paint and then left click a grid cell to paint. Again, you can also paint an other Slice to use as a reference, and use Ctrl to only paint for one "Mode".
Also, the "Edit Slices Grid" button allows editing the grid borders of the slices.
Below is the vanilla "Low Slice" that is used in areas close to the river. Note that some cells have Layouts while other cells have Biomes directly - in areas where the biome is not changing based on temperature or humidity.
Their is only one Dimension grid, named "Biomes". It defines which slice to use based on weirdness and depth.
As before, you can paint in the grid by selecting a Slice, Layout, or Biome with left click and paint using left click in the grid. The grid borders can be changed using the "Edit Grid" button.
Additionally you can select which mode to use in the referenced Slices and Layouts for each column (weirdness) by clicking the "A"/"B" button above the column.
Below is the vanilla dimension grid:
