Brasil - São Paulo - São Paulo
Instituto de Metemática e Estatística da Universidade de São Paulo (IME - USP)
C++, CUDA and OpenCL implementations of Runge-Kutta methods (orders 2 and 4) applied to vector fields

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# LICENSE #
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LGPL v3.0
Please see http://www.gnu.org/licenses/lgpl-3.0.txt

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# DEVELOPERS #
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Orientation: Assistant Professor of Computer Science MARCEL P. JACKOWSKI

Development: Rafael Reggiani Manzo (CUDA and C++)
             Giancarlo Rigo (OpenCL and C++)
              
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# INPUT #
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#Standard

The input file should be formated as the following:

x y z
v0_count
v0_x v0_y v0_z
.
.
.
v0_x v0_y v0_z
p_x p_y p_z
.
.
.
p_x p_y p_z
p_x p_y p_z1
.
.
.
p_x p_y p_z1
.
.
.

To see a example run: make examples

#Analyze

Another option is the Analyze format. To do so, you need to run the program with:

./rk --analyze <image.hdr>

Then you will be prompted for other params by the program.

The support to Analyze was achieved by the use of the open library CImg (http://cimg.sourceforge.net/index.shtml) distributed under the CeCILL-C license (http://www.cecill.info/licences/Licence_CeCILL-C_V1-en.html).

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# Interface Commands #
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To translate the result use the keys: w, a, s, d
To rotate the result over the X-axis use the up and down arrows
To rotate the result over the Y-axis use the left and right arrows
To zoom in use the key +
To zoom out use the key -
To toogle RK2 visualization use 2
To toogle RK4 visualization use 4
To toogle the vector field visualization use f