Module ground 

What lies under the diagram: the canvas fill and the grid over it.

One rule, read by every backend. The grid is not in the display list — it is drawn from the camera, so it stays sharp at any zoom and costs nothing to record — which would otherwise leave each backend to decide for itself where a line falls and how heavy it is.

Structs

Ground

The two raw colours a backend paints the ground with. The app resolves these from its theme, so a backend never needs to know about roles.

Enums

GridLine

The two weights the grid is drawn in.

Constants

MAJOR_STEP 🔒

Every fourth grid line is a major one.

MIN_MINOR_SPACING 🔒

Screen-space spacing below which the minor grid lines are dropped, as they read as a wash of colour rather than a grid.

Functions

along 🔒

World coordinates of the grid lines crossing span on one axis, each with its weight. Minor lines are skipped once they crowd together on screen.

horizontals

Screen y of every grid line crossing viewport horizontally, each with its weight.

screen 🔒

verticals

Screen x of every grid line crossing viewport vertically, each with its weight.