algorithmically artisticIf not, I'll write one myself in Java, but I'd really rather not bother.
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In that cut, if y'all didn't look, is the actual output of the program set to 99x99 and "One Adjacency" then "Two Adjacencies", respectively.
So, any leads?
If you want something that assigns colors randomly, cobble something together that uses a map to check if the char already read (use fstream.read() instead of fstream >> char so you get spaces too) has been encountered before; if it has, it just pulls the value out of the map, and if not, it selects a random 24 bit value and sets the corresponding map[char] to that value.
--
As for creating picture files with C++, a very simple format to implement is the aforementioned PGM (for greyscale, 1 char per pixel) or PNM (for true color, 3 chars per pixel). This is just a plain text header prefixing the raw data.
For PGM (greyscale), it is
P5
x y
255
where x and y is x size and y size, and for PNM, it is
P6
x y
255
Then follows a newline, and your raw data, so for a 100x100 PGM you'd have
P5
100 100
255
[raw data]
This is what I used for my Linux fractal rendering programs. Of course, when I later put up some of the renders of those, I used GIMP to convert the results to a compressed format like png afterwards. (Reading PNMs and PGMs is a bit more difficult, as comments are allowed.)
The 99x99 size was very deliberate. The fractal only really works with odd parameters- and 99x99 fits as an LJ user icon.
Thank you very much for the information!
What algorithm does your program use to generate the text? I'm curious as to why it only works with odd sizes.
In pseudocode:
FractalThingie(int size)
char board[size][size]; //this is actually vector
In pseudocode:
<tt>
FractalThingie(int size)
char board[size][size]; //this is actually vector<vector<char> > in action
board[size/2][size/2] = first symbol;
while(board changed between steps){
copy new board into old board(two boards used to keep swaps from slowing access)
for each cell{
if it's got a mark, carry it over to the next step;
if it's blank, give it this round's mark if it has exactly one marked neighbor;
}
}
print the board;
return 0;
That's what created the first image. The second one was created by marking it if it had exactly one or two neighbors. A third one, which I personally think looks cooler than the other two, marks a location if it has exactly one or three neighbors, but not two. Haven't tried other combinations, although 1-2-3 just gives concentric squares for obvious reasons.
Of course, exactly what it will spit out is hard-wired into the code, because I was too lazy to do it properly. At least it takes board size as a parameter! If you're interested, the code (currently in 1-3 mode) is at http://students.cec.wustl.edu/~abn1/fractal.cc assuming you've waited long enough after I make this comment for it to be uploaded...
Welcome Mat!
Re: Welcome Mat!