Graphics.Chalkboard.Shapes

This module contains some basic shape generators, expressed as Board Bool.

Documentation

circle :: Board Bool

unit circle, radius 0.5, over origin.

vbar :: Board Bool

unit vertical bar, 1 wide over origin.

hbar :: Board Bool

unit horizontal bar, 1 high over origin.

square :: Board Bool

unit square, 1x1 over origin.

checker :: Board Bool

cheacker board, with squares 1x1.

straightline :: (Point, Point) -> R -> Board Bool

Given two Points, and a thickness, draw a line between the points. line :: Line -> Double -> Board Bool

functionline :: (R -> Point) -> R -> Int -> Board Bool

A line generated by sampling a function from R to Points, with a specific width. There needs to be at least 2 sample points.

arrowhead :: Point -> Radian -> R -> Board Bool

arrowhead is a triangle, pointing straight up, height 1, width 1, with the (0,0) at the center of the base.