1 /*

     2 * This file is part of the TraKERS\Front Processing package.

     3 *

     4 * (c) IRI <http://www.iri.centrepompidou.fr/>

     5 *

     6 * For the full copyright and license information, please view the LICENSE_FRONT

     7 * file that was distributed with this source code.

     8 */

     9 

    10 class vbuffer

    11 {

    12     int x;

    13     int y;

    14     float xvel;

    15     float yvel;

    16     float pressurex = 0;

    17     float pressurey = 0;

    18     float pressure = 0;

    19 

    20     vbuffer(int xIn,int yIn)

    21     {

    22         x = xIn;

    23         y = yIn;

    24         pressurex = 0;

    25         pressurey = 0;

    26     }

    27 

    28     void updatebuf(int i, int u)

    29     {

    30         if(i>0 && i<lwidth && u>0 && u<lheight)

    31         {

    32             pressurex = (v[i-1][u-1].xvel*0.5 + v[i-1][u].xvel + v[i-1][u+1].xvel*0.5 - v[i+1][u-1].xvel*0.5 - v[i+1][u].xvel - v[i+1][u+1].xvel*0.5);

    33             pressurey = (v[i-1][u-1].yvel*0.5 + v[i][u-1].yvel + v[i+1][u-1].yvel*0.5 - v[i-1][u+1].yvel*0.5 - v[i][u+1].yvel - v[i+1][u+1].yvel*0.5);

    34             pressure = (pressurex + pressurey)*0.25;

    35         }

    36     }

    37 }