Wumpus.Drawing.Paths.Base.BuildCommon

Common data types for the monadic builders.

Documentation

data BuildLog a

Monadic builders allow both inserts (patterned after TikZ) which are decorations along the path and sub paths that are stroked and possibly closed.

Instances

Monoid (BuildLog a)

data PathEnd

Constructors

PATH_CLOSED

PATH_OPEN

Instances

Eq PathEnd

Show PathEnd

data Vamp u

Constructors

Vamp

Fields

vamp_move_span :: Vec2 u

vamp_move_start :: Vec2 u

vamp_dc_update :: DrawingContextF

vamp_deco_path :: RelPath u

vamp_path_end :: PathEnd

extractTrace :: OPlus a => a -> BuildLog a -> (a, a)

Extract the pen and insert drawings from a BuildLog.

Any sub-paths traced by the pen are drawn at the back in the Z-order.

addInsert :: a -> BuildLog a -> BuildLog a

Add an insert.

This is a decoration drawn at the current point during path building.

addPen :: a -> BuildLog a -> BuildLog a

Add a pen drawing.

This is a stroked path sub-path formed prior to a moveto instruction. Moveto is synonymous with pen up - at a pen up and sub-path is drawn as a trace.

insert1 :: a -> BuildLog a

Build a trace from an insert.

This is a decoration drawn at the current point during path building.

pen1 :: a -> BuildLog a

Build a trace from an insert.

This is a decoration drawn at the current point during path building.