Print ASCII Voxels
Lua (1442 bytes)
Bonus animations! :)
If you have any cool voxel art in the same format as the examples, link it in the comments and I'll make an animation out of it
7x7x7
12x12x12
This is my first code golf, so its quite messy and I plan on improving it or porting it to a different language.
Here is what i have, right now at just under 2.5kB barely-golfed (just removed indentation whitespace at this point, I will continue more later)
Here is the now ~1.4kB golfed and minified version (note the "a" table on the first line is the placeholder for the voxel matrix):
local a={}
local b,c=table,string;local d,e,f,g,h,i=b.concat,#a,c.gsub,c.gmatch,ipairs,b.insert;local function j(k,l,m)return a[k]and a[k][l]and a[k][l][m]==1 end;local n={}for o=1,e*5+1 do n[o]={}for p=1,e*7+1 do n[o][p]=" "end end;local q=[[
__6hhhh7
_g ij
1aaaa2 j
b d 5
b de_
3cccc4__
]]local function r(k,l,m)local s=q;if j(k,l,m)then local t,u,v,w,x,y,z,A=j(k-1,l,m),j(k+1,l,m),j(k,l,m-1),j(k,l,m+1),j(k,l-1,m),j(k+1,l+1,m),j(k+1,l,m+1)," "if t then s=f(s,"[ai]"," ")end;if u and not y then A=A.."c"end;if u and not z then A=A.."e"end;if v then A=A.."bg"end;if w then A=A.."di"end;if x then if not j(k,l-1,m+1)then A=A.."j"end;A=A.."h"end;if t then if w and j(k-1,l,m+1)then A=A.."2"end;if v and j(k-1,l,m-1)then A=A.."1"end end;if u then if w and j(k+1,l,m+1)then A=A.."4"end;if v and j(k+1,l,m-1)then A=A.."3"end end;if x then if w and j(k,l-1,m+1)then A=A.."7"end;if v and j(k,l-1,m-1)then A=A.."6"end;if u and j(k+1,l-1,m)then A=A.."5"end end;s=f(f(f(f(f(s,"["..A.."]"," "),"[ach]","-"),"[bdj]","|"),"[gie]","/"),"[1234567]","+")else s=nil end;return s end;local B,C;local D=e*2-1;local E=1;for k=e,1,-1 do for l=1,e do for m=1,e do B=(l-1)*-2+(m-1)*5+D;C=(l-1)*2+(k-1)*3+E;local s=r(k,l,m)if s then local F={}for G in s:gmatch("[^\n]+")do local H={}for I in G:gmatch(".")do i(H,I)end;i(F,H)end;for J,K in h(F)do for L,I in h(K)do if I~="_"then n[C+J-1][B+L-1]=I end end end end end end end;for o,a in h(n)do print(d(a))end
Edit: Here is the original (over 3kB) ungolfed version, including my edits for making the animation (if you are running it yourself and want the animation, change the false near the bottom of the code to true.
local v = {}
local depth = #v;
function voxel(y,z,x)
return (v[y] and v[y][z] and v[y][z][x]==1)
end
local canvas = {}
print("Constructing canvas of depth",depth)
for i=1,depth*5+1 do
canvas[i] = {}
for j=1,depth*7+1 do
canvas[i][j] = " "
end
end
local voxelProto = [[
__6hhhh7
_g ij
1aaaa2 j
b d 5
b de_
3cccc4__
]]
function renderVoxel(y,z,x)
local vox = voxelProto
if (voxel(y,z,x)) then
local up = voxel(y-1,z,x)
local down = voxel(y+1,z,x)
local left = voxel(y,z,x-1)
local right = voxel(y,z,x+1)
local back = voxel(y,z-1,x)
local downFront = voxel(y+1,z+1,x)
local downRight = voxel(y+1,z,x+1)
if (up) then
vox = vox:gsub("[ai]"," ")
end
if (down and not downFront) then
vox = vox:gsub("[c]"," ")
end
if (down and not downRight) then
vox = vox:gsub("[e]"," ")
end
if (left) then
vox = vox:gsub("[bg]"," ")
end
if (right) then
vox = vox:gsub("[di]"," ")
end
if (back and not voxel(y,z-1,x+1)) then
vox = vox:gsub("[j]"," ")
end
if (back or up) then
vox = vox:gsub("[h]"," ")
end
if (up and right and voxel(y-1,z,x+1)) then
vox = vox:gsub("[2]"," ")
end
if (up and left and voxel(y-1,z,x-1)) then
vox = vox:gsub("[1]"," ")
end
if (down and right and voxel(y+1,z,x+1)) then
vox = vox:gsub("[4]"," ")
end
if (down and left and voxel(y+1,z,x-1)) then
vox = vox:gsub("[3]"," ")
end
if (back and right and voxel(y,z-1,x+1)) then
vox = vox:gsub("[7]"," ")
end
if (back and left and voxel(y,z-1,x-1)) then
vox = vox:gsub("[6]"," ")
end
if (back and down and voxel(y+1,z-1,x)) then
vox = vox:gsub("[5]"," ")
end
vox = vox:gsub("[ach]","-")
vox = vox:gsub("[bdj]","|")
vox = vox:gsub("[gie]","/")
vox = vox:gsub("[1234567]","+")
else
vox = nil
end
return vox
end
local xpos,ypos
local minx = depth*2-1
local miny = 1;
local pic = {}
function drawCanvas()
for k,v in pairs(canvas) do
pic[k] = table.concat(v)
end
return table.concat(pic,"\n")
end
local timeline = {}
print("Compositing voxels")
for y=depth,1,-1 do
for z=1,depth do
for x = 1,depth do
xpos = (z-1)*-2 + (x-1)*5 + minx
ypos = (z-1)*2 + (y-1)*3 + miny
local vox = renderVoxel(y,z,x)
if (vox) then
local vt = {}
for line in vox:gmatch("[^\n]+") do
local vtl = {}
for c in line:gmatch(".") do
table.insert(vtl,c)
end
table.insert(vt,vtl)
end
for ly,chars in ipairs(vt) do
for lx,c in ipairs(chars) do
if (c ~= "_") then
canvas[ypos+ly-1][xpos+lx-1] = c
end
end
end
table.insert(timeline,drawCanvas())
end
end
end
end
if (false) then -- change to true if you want to see the animation!
for i=1,#timeline do
local t = os.clock() + 0.05
io.write(timeline[i],'\n\n')
io.flush()
while (t > os.clock()) do end
end
end
print(timeline[#timeline])
Here is a sample of code that will populate the voxel matrix from a string for a 3x3x3 voxel matrix. (It will take any string in a similar format, but make sure it is a cube or things will probably break.)
To use this, insert this chunk right after the first line local v = {}
local vs = [[
100
000
000
110
100
000
111
110
101
]]
for layer in vs:gmatch("[^a]+") do
local a = {}
for row in layer:gmatch("[^\n]+") do
local b = {}
for _vox in row:gmatch("[01]") do
table.insert(b,(_vox=="1") and 1 or 0)
end
table.insert(a,b)
end
table.insert(v,a)
end
Here is the output from the given 12x12x12 voxel pattern: (and yes it does look better on a normal console/text viewing apparatus, there is a bit too much vertical spacing here)
+----+----+
/ /|
+----+----+ |
| | +
+----+ | |/
/ /| + +----+
+----+ | | | +----+
| | + | |/ /|
| | | + +----+ |
+ + | | | +
+----+----+ +----+--| | + | |/
/ /| / | | | + +----+
+----+----+ | +----+----+ + | | | +----+
| | + | | + | |/ /|
| |/ +----+----+----+ | | | + +----+ |
+ +----+ / /| + +----+ + | | | +
| | + +----+----+----+ | | | +--| | + | |/
| | | | | + | |/ | | | +----+----+
+ + | | | | + +----+ + |
| | + + +----+ + | | | +
| | | | | +--| | + | |/
+ + | | |/ | | | +----+----+----+
| | +----+ + +----+ + |
| |/ /| | | +
+ +----+ | | |/
| | + +----+----+----+
| |/
+----+----+ +----+----+
/ /|
+----+ +----+----+ |
/ /| | | +
+----+ | | |/
| | + + +----+
+----+----+----+ +----+----+----+----+---| | |---+| | +----+-+----+----+
/ /| / + + | | |/ /| /|
+----+----+----+ |+ | | + + +----+ | + |
| | + | | | | | + / +
| | | +----+----+----+ + + | | |/ + /
+ +----+ + | / /| | | + + +----+ / +
| | +--| | + +----+----+----+ | | | | | | + + /
| |/ | | | | | + + + | | | | / +
+ +----+ + | | | | | | + + + | + /
| | + + +----+ + | | | | | | + / +
| | | | | +--| | + + + | | |/ + /
+----+----+ + | | |/ | | | | | + +----+ / +
+----+--| | + + +----+ + | | |/ + /
/ | | | | | + +----+ / +
+----+----+ + | | |/ + /
| | + +----+----+----+ / +
| |/ + /
+----+----+----+ / +
+ + /
/ / +
+ + /
/ / +
+ + /
/ / +
+----+----+----+----+----+----+----+----+----+----+----+----+ /
| | +
| |/
+----+----+----+----+----+----+----+----+----+----+----+----+
Here is the output from the 7x7x7 example here
+----+----+----+ +----+----+----+
/ /| / /|
+ +----+ + | + +----+ + |
/ /| / / + / /| / / +
+ + | + + / + + | + + /
/ / +-/ / + / / +-/ / +
+----+ /-+----+ /-+----+ /-+----+ /--+
| | + | | + | | + | | + /|
+----+ | |+----+ | |+----+ | |+----+ | | + |
/ /| + / /| + / /| + / /| + |/ +
+ + | |+ + | |+ + | |+ + | | + |
/ / + / / + / / + / / + | + |
+ +----+ + |+ +----+ + | + /| +
/ / + / / + | | + | |
+----+----+----+ /|+----+----+----+ /| + |/--+ |
| | + || | + | |-+ / +
| |/--+| |/--+ | + /
+----+----+----+ / +----+----+----+ / + / +
+ + / + +----+ + /-+ + /--+ /--+
/ / + / / + / / + | + /|
+----+ / +----+----+----+ /-+----+ /--+ |/ + |
| | + | | + | | + /|-+ / +
| | |-+| |/ +| | | + | + /
+ + | +----+----+----+ /|+ + |/ + / +
| | +----+----+ | |+ + || | + /--+ /
| |/ /| + / / +| | + | +
+ +----+----+ | |+----+ /-+ + /--+ |/
| | + || | + | | + /|-+
| | | +| | | +| |/ + |
+----+----+ + | |+ + |/|+----+ / +
+ +--| | + || | + | + + /
/ | | |-+| | +-/ / +
+----+----+ + | + + / +----+ /
| | + | | + | | +
| |/ | |/ | |/
+----+----+----+ +----+ +----+
Python ( 444 361 354 bytes)
Edit: I found another bug that would omit a corner cross in very special cases. A straight forward fix added 50 bytes to the code so I tried to golf it down a bit further. Now the bug is fixed and it's even 83 bytes shorter. It's becoming very hacky. I also wanted to get rid of the fivefold for loop but could not yet find a solution. Any ideas?
Edit 2: With a very long import I can save another 7 characters.
Neither very short nor very elegant, but then again it is a complex problem:
#input:
u=[[[1,1,1],[1,0,1],[1,1,1]],
[[1,0,1],[0,0,0],[1,0,1]],
[[1,1,1],[1,0,1],[1,1,1]]]
#actual code that counts:
r=range
n=len(u)
g=r(n)
a=([' ']*9*n+['\n'])*6*n
t='/|-+\n '
d=dict(zip(t+'%!=*',2*t))
for y,z,x,i,j in __import__('itertools').product(g,g,g[::-1],r(6),r(8)):
if abs(i+j-6)<5*u[x][y][z]:a[(9*n+1)*(i+3*x+2*y)+j+5*z-2*y+2*n]+='./ %|+====* || ! *| !/.*----+'[8*i+j-8]
o=''.join((d[x[-1]],' ')[x[-2:]in('%/','!|','=-')or x[-4:]=='*++*']for x in a)
#output:
print o
It first draws all the individual voxels with all lines on top of each other. Then it outputs only the topmost characters and gets rid of those lines and crosses on planar planes that should not be drawn according to the specs.
I guess it's possible to golf this down quite some more, but 444 is such a nice number. :)
Example 3x3x3 and 7x7x7 output (with some newlines removed):
+----+----+----+
/ /|
+ +----+ + |
/ /| / / +
+ +----+ + |
/ / + |
+----+----+----+ /| +
| | + | |
| | |-+ |
+ +----+ + |/ +
| | +--| | + /
| |/ | | +
+ +----+ + /
| | +
| |/
+----+----+----+
+----+----+----+ +----+----+----+
/ /| / /|
+ +----+ + | + +----+ + |
/ /| / / + / /| / / +
+ + | + + / + + | + + /
/ / +-/ / + / / +-/ / +
+----+ /-+----+ /-+----+ /-+----+ /--+
| | + | | + | | + | | + /|
+----+ | |+----+ | |+----+ | |+----+ | | + |
/ /| + / /| + / /| + / /| + |/ +
+ + | |+ + | |+ + | |+ + | | + |
/ / + / / + / / + / / + | + |
+ +----+ + |+ +----+ + | + /| +
/ / + / / + | | + | |
+----+----+----+ /|+----+----+----+ /| + |/--+ |
| | + || | + | |-+ / +
| |/--+| |/--+ | + /
+----+----+----+ / +----+----+----+ / + / +
+ + / + +--- + + /-+ + /--+ /--+
/ / + / / + / / + | + /|
+----+ / +----+----+----+ /-+----+ /--+ |/ + |
| | + | | + | | + /|-+ / +
| | |-+| |/ +| | | + | + /
+ + | +----+----+----+ /|+ + |/ + / +
| | +----+----+ | |+ + || | + /--+ /
| |/ /| + / / +| | + | +
+ +----+----+ | |+----+ /-+ + /--+ |/
| | + || | + | | + /|-+
| | | +| | | +| |/ + |
+----+----+ + | |+ + |/|+----+ / +
+ +--| | + || | + | + + /
/ | | |-+| | +-/ / +
+----+----+ + | + + / +----+ /
| | + | | + | | +
| |/ | |/ | |/
+----+----+----+ +----+ +----+