moonpie.math¶

A basic library for some math functions.

Functions¶

floor(…): Returns the floor value for a list of values. Useful for flooring return values from a function
line(x0, y0, x1, y1): Returns an iterator that will plot lines along the requested points.

local maths = require "moonpie.math"

for x, y in maths.line(1, 3, 8, 18) do
  print(x, y)  -- Output each x, y coordinate
end

moonpie.math.cards¶

Provides a basic implementation of a deck of cards with a Fisher-Yates shuffler to randomize the elements.

local maths = require "moonpie.math"
local deck = maths.cards.newDeck { 1, 2, 3, 4, 5, 6, 7, 8, 9 }
deck:shuffle()
local hand = deck:deal(3)
-- hand == { 4, 9, 2 }
-- deck == { 5, 1, 3, 7, 6, 8 }

moonpie.math.ipoint¶

iPoint is a simple 3d coordinate point that locks to integer based coordinates. It attempts to be efficient by only having

moonpie.math.rectangle¶

Provides a basic implementation for rectangles with additional helpers

new(x,y,width,height): Returns a new rectangle with the specified dimensions
left(self): Returns the leftmost coordinate (x)
right(self): Returns the rightmost coordinate (x+width)
top(self): Returns the topmost coordinate (y)
bottom(self): Returns the bottommost coordinate (y+height)
[true] intersects(self, rect): Returns true if the two rectangles intersects
[rect] overlap(self, rect): Returns a new rectangle that is the overlapping region between 2 rectangles
[x,y] center(self): Returns the coordinates in the middle of the rectangle