Miguel Mesa

Hi! I made a patch to generate a fractal fern but it is not working... I think the problem is related to matrix dimensions or bang ordering... Would someone advise me how to fix my patch or, even better, how to make it faster and eficient? I also need to manipulate some of the coeficients of the equations.

I pasted the patch below, attached the expected image result and here is the theory behind (a sort of algorithm):

    Ynew = -0.23*Xold + 0.22*Yold + 1.6

    Ynew = 0.26*Xold + 0.24*Yold + 0.44

	Xnew = 0.20*Xold - 0.26*Yold
	Ynew = -0.23*Xold + 0.22*Yold + 1.6

	Xnew = A*Xant + B*Yant + E
	Ynew = C*Xant + D*Yant + F

	Xnew = -0.15*Xold + 0.28*Yold
	Ynew = 0.26*Xold + 0.24*Yold + 0.44

problem-with-a-fractal-fern-generation

But you need Jitter, lindemeyer systems are in Jitter.

http://www-gs.informatik.tu-cottbus.de/~wwwgs/ima_lsy.pdf

I found this paper that may help too.
http://www-gs.informatik.tu-cottbus.de/~wwwgs/ima_lsy.pdf


Donk, thank you very much... no one have replyed!

I tried to use an L-system but didn't realize how to transform the equations that i've got to an L-system. I will check the PDF you suggested, maybe i can find something interesting.

Now I fixed the patch and it is working, also with the coeficient manipulation that I needed, but my question is... how to make the points rendered to be bigger, they are really small... I'm still using jit.gl.render and a window of 480 X 480 pixels. If I make the camera get closer the pixels are still little and if I make a kind of downsampling (use a intermediate little jit.matrix and display it onto a bigger jit.window) but the matrix has to be a 4 plane char and the quality really decreases...

Problem with a Fractal fern generation