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modified post 80ef9c by Anonymous on Thu 17th Oct 2024 06:42
original post e0bfcc287f by Anonymous on Fri 3rd Feb 2023 10:59
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-- test1.lua - simple function plotter in lua

1	1	-- test1.lua - simple function plotter in lua
2	2	-- written by Roland Mainz <roland.mainz@nrubsig.org>
3	3
4	4	-- Terminal size
5	5	TermSize = {w = 376-2, h = 119-2}
6	6
7	7
8	8	function term_clear ()
9	9	io.write("\27[2J")
10	10	end
11	11
12	12	function term_cup (x,y)
13	13	io.write(
14	14	string.format("\27[%d;%dH",
15	15	math.floor(y),
16	16	math.floor(x)
17	17	)
18	18	)
19	19	end
20	20
21	21
22	22	-- plot a function
23	23	-- (assume that domain&&image are in the range [-1,+1])
24	24	function plot (f)
25	25	local i
26	26	local x
27	27	local y
28	28
29	29	term_clear()
30	30
31	31	for i=1, TermSize.w do
32	32	x = (i/TermSize.w)*2 - 1
33	33	y = (f(x) + 1)/2 * TermSize.h
34	34
35	35	term_cup(i, y)
36	36	io.write('X')
37	37	end
38	38
39	39	-- move cursor to the bottom
40	40	term_cup(1, TermSize.h+1)
41	41	end
42	42
43	43	plot(function (x) return math.sin(x2math.pi)math.sin(x3*math.pi) end)
44	44
45	45	-- EOF.
46	46
47	47