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reactionDiffusion.cu
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reactionDiffusion.cu
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#include <stdio.h>
#include <stdlib.h>
#include "typeDefinition.cuh"
//#include "globalVariables.cuh"
#include "hostPrototypes.h"
#include "devicePrototypes.cuh"
#include "./common/CudaSafeCall.h"
extern __constant__ int nx_d, ny_d;
extern __constant__ REAL dt_d, rx_d, ry_d, qx4_d, qy4_d, fx4_d, fy4_d;
extern __constant__ REAL rxy_d, rbx_d, rby_d, rscale_d;
extern __constant__ REAL tc_d, alpha_d, beta_d, delta_d, eps_d, mu_d, gamma_d, theta_d;
extern __constant__ REAL boundaryVal_d;
extern __constant__ bool solidSwitch_d, neumannBC_d, gateDiff_d, anisotropy_d;
extern __constant__ int lap4_d, timeIntOrder_d;
extern __constant__ REAL conTh1_d, conTh2_d, conTh3_d;
/*========================================================================
* Main Entry of the Kernel
*========================================================================
*/
__global__ void reactionDiffusion_kernel(size_t pitch,
stateVar g_out, stateVar g_in, stateVar J,
stateVar velTan, bool reduceSym, bool *solid, bool stimLock, REAL *stim,
bool stimLockMouse, int2 point) {
/*------------------------------------------------------------------------
* getting i and j global indices
*-------------------------------------------------------------------------
*/
const int i = blockIdx.x*blockDim.x + threadIdx.x;
const int j = blockIdx.y*blockDim.y + threadIdx.y;
if ( (i<nx_d) && (j<ny_d) ) {
/*------------------------------------------------------------------------
* converting global index into matrix indices assuming
* the column major structure of the matlab matrices
*-------------------------------------------------------------------------
*/
const int i2d = i + j*nx_d;
/*------------------------------------------------------------------------
* Circular mouse stimulus
*------------------------------------------------------------------------
*/
bool scs;
int ic = i-nx_d/2;
int jc = j-ny_d/2;
int cx = __float2int_rn(point.x-nx_d/2);
int cy = __float2int_rn(point.y-ny_d/2);
scs = ( ( (ic-cx)*(ic-cx) + (jc-cy)*(jc-cy) ) < 400 ) && stimLockMouse ? true : false;
/*------------------------------------------------------------------------
* RK4 arrays
*------------------------------------------------------------------------
*/
REAL ki[4], sumrk4[4];
switch (timeIntOrder_d) {
case 1: // Euler
ki[0] = 0.0; ki[1] = 0.0; ki[2] = 0.0; ki[3] = 0.0;
sumrk4[0] = 1.0; sumrk4[1] = 0.0; sumrk4[2] = 0.0; sumrk4[3] = 0.0;
break;
case 2: // RK2
ki[0] = 0.0; ki[1] = 0.5; ki[2] = 0.0; ki[3] = 0.0;
sumrk4[0] = 0.0; sumrk4[1] = 1.0;
sumrk4[2] = 0.0; sumrk4[3] = 0.0;
break;
case 4: // RK4
ki[0] = 0.0; ki[1] = 0.5; ki[2] = 0.5; ki[3] = 1.0;
sumrk4[0] = 0.166666666666667; sumrk4[1] = 0.333333333333333;
sumrk4[2] = 0.333333333333333; sumrk4[3] = 0.166666666666667;
break;
default:
if ( (threadIdx.x==0) && (threadIdx.y==0) ) {
printf("No time integration method selected\n");
}
break;
}
/*------------------------------------------------------------------------
* Setting local variables
*-------------------------------------------------------------------------
*/
REAL du2dt = 0.0;
REAL dv2dt = 0.0;
REAL rhs_u = 0.0;
REAL rhs_v = 0.0;
REAL u, v;
REAL I_sum, I_v;
REAL u0 = g_in.u[i2d] ;
REAL v0 = g_in.v[i2d] ;
/*------------------------------------------------------------------------
* Euler/RK4 loop starts
*-------------------------------------------------------------------------
*/
for (int rk4idx=0;rk4idx<timeIntOrder_d;rk4idx++) {
g_in.u[i2d] = u0 + ( ki[rk4idx] * du2dt );
g_in.v[i2d] = v0 + ( ki[rk4idx] * dv2dt );
u = g_in.u[i2d];
v = g_in.v[i2d];
du2dt = 0.0;
dv2dt = 0.0;
/*------------------------------------------------------------------------
* I_sum (voltage)
*-------------------------------------------------------------------------
*/
I_sum = -( mu_d*u*(1.0-u)*(u-alpha_d) - u*v )
// - ( stimLock ? stim[i2d] : 0.0 );
// -( stimLock ? ( (u<conTh1_d) && (abs(v-conTh2_d)<conTh3_d) ? stim[i2d] : 0.0 ) : 0.0 );
- ( scs ? 24.7 : 0.0 ); // Mouse stimulus
/*------------------------------------------------------------------------
* Calculating the reaction for the gates
*------------------------------------------------------------------------
*/
I_v = -( eps_d*(delta_d*(u-gamma_d)*(beta_d-u) - v - theta_d) );
/////////////////////////////
// Solve homogeneous tissue
/////////////////////////////
if ( neumannBC_d ) {
int S = I2D(nx_d,i,coord_j(j-1));
int N = I2D(nx_d,i,coord_j(j+1));
int W = I2D(nx_d,coord_i(i-1),j);
int E = I2D(nx_d,coord_i(i+1),j);
if ( solidSwitch_d ) {
bool sc = solid[i2d];
bool sw = solid[W];
bool se = solid[E];
bool sn = solid[N];
bool ss = solid[S];
float3 coeffx =
make_float3( (sw && se) && (sw && sc) ? 1.0 : ( (sw && sc) ? 2.0 : 0.0) ,
sc ? ( (sw || se) ? 2.0 : 0.0 ) : 0.0 ,
(sw && se) && (sc && se) ? 1.0 : ( (sc && se) ? 2.0 : 0.0 ));
float3 coeffy =
make_float3( (sn && ss) && (sn && sc) ? 1.0 : ( (sn && sc) ? 2.0 : 0.0 ) ,
sc ? ( (sn || ss) ? 2.0 : 0.0 ) : 0.0 ,
(sn && ss) && (sc && ss) ? 1.0 : ( (sc && ss) ? 2.0 : 0.0 ));
du2dt = (
( coeffx.x*g_in.u[W] - coeffx.y*u + coeffx.z*g_in.u[E] )*rx_d
+ ( coeffy.x*g_in.u[N] - coeffy.y*u + coeffy.z*g_in.u[S] )*ry_d );
if ( gateDiff_d ) {
// Gate 1
dv2dt = (
( coeffx.x*g_in.v[W] - coeffx.y*v + coeffx.z*g_in.v[E] )*rx_d*rscale_d
+ ( coeffy.x*g_in.v[N] - coeffy.y*v + coeffy.z*g_in.v[S] )*ry_d*rscale_d );
}
// Anisotropic mode pending FIXME
} else { // Square boundary
du2dt = (
( g_in.u[W] - 2.0*u + g_in.u[E] )*rx_d
+ ( g_in.u[N] - 2.0*u + g_in.u[S] )*ry_d );
if ( gateDiff_d ) {
// Gate 1
dv2dt = (
( g_in.v[W] - 2.0*v + g_in.v[E] )*rx_d*rscale_d
+ ( g_in.v[N] - 2.0*v + g_in.v[S] )*ry_d*rscale_d );
}
if ( lap4_d ) {
int SWxy = (i>0 && j>0)? I2D(nx_d,i-1,j-1) :
((i==0 && j>0)? I2D(nx_d,i+1,j-1) :
((i>0 && j==0)? I2D(nx_d,i-1,j+1) : I2D(nx_d,i+1,j+1) ) ) ;
int SExy = (i<(nx_d-1) && j>0)? I2D(nx_d,i+1,j-1) :
((i==(nx_d-1) && j>0)? I2D(nx_d,i-1,j-1) :
((i<(nx_d-1) && j==0)? I2D(nx_d,i+1,j+1) : I2D(nx_d,i-1,j+1) ) ) ;
int NWxy = (i>0 && j<(ny_d-1))? I2D(nx_d,i-1,j+1) :
((i==0 && j<(ny_d-1))? I2D(nx_d,i+1,j+1) :
((i>0 && j==(ny_d-1))? I2D(nx_d,i-1,j-1) : I2D(nx_d,i+1,j-1) ) ) ;
int NExy = (i<(nx_d-1) && j<(ny_d-1))? I2D(nx_d,i+1,j+1) :
((i==(nx_d-1) && j<(ny_d-1))? I2D(nx_d,i-1,j+1) :
((i<(nx_d-1) && j==(ny_d-1))? I2D(nx_d,i+1,j-1) : I2D(nx_d,i-1,j-1) ) ) ;
J.u[i2d] = I_sum;
du2dt += -2.0*( qx4_d+qy4_d )*(
+ ( g_in.u[W] - u + g_in.u[E] )
+ ( g_in.u[N] - u + g_in.u[S] ) );
du2dt += ( qx4_d+qy4_d )*(g_in.u[SWxy]+g_in.u[SExy]+g_in.u[NWxy]+g_in.u[NExy]);
du2dt -= (
( J.u[W] - 2.0*I_sum + J.u[E] )*fx4_d
+ ( J.u[N] - 2.0*I_sum + J.u[S] )*fy4_d );
if ( gateDiff_d ) {
J.v[i2d] = I_v;
dv2dt += -rscale_d*2.0*( qx4_d+qy4_d )*(
+ ( g_in.v[W] - v + g_in.v[E] )
+ ( g_in.v[N] - v + g_in.v[S] ) );
dv2dt += rscale_d*( qx4_d+qy4_d )*(g_in.v[SWxy]+g_in.v[SExy]+g_in.v[NWxy]+g_in.v[NExy]);
dv2dt -= (
( J.v[W] - 2.0*I_v + J.v[E] )*fx4_d
+ ( J.v[N] - 2.0*I_v + J.v[S] )*fy4_d );
}
}
if ( anisotropy_d ) {
int SWxy = (i>0 && j>0) ? I2D(nx_d,i-1,j-1) :
((i==0 && j>0) ? I2D(nx_d,i+1,j-1) :
((i>0 && j==0)? I2D(nx_d,i-1,j+1) : I2D(nx_d,i+1,j+1) ) ) ;
int SExy = (i<(nx_d-1) && j>0) ? I2D(nx_d,i+1,j-1) :
((i==(nx_d-1) && j>0) ? I2D(nx_d,i-1,j-1) :
((i<(nx_d-1) && j==0)? I2D(nx_d,i+1,j+1) : I2D(nx_d,i-1,j+1) ) ) ;
int NWxy = (i>0 && j<(ny_d-1)) ? I2D(nx_d,i-1,j+1) :
((i==0 && j<(ny_d-1)) ? I2D(nx_d,i+1,j+1) :
((i>0 && j==(ny_d-1))? I2D(nx_d,i-1,j-1) : I2D(nx_d,i+1,j-1) ) ) ;
int NExy = (i<(nx_d-1) && j<(ny_d-1)) ? I2D(nx_d,i+1,j+1) :
((i==(nx_d-1) && j<(ny_d-1)) ? I2D(nx_d,i-1,j+1) :
((i<(nx_d-1) && j==(ny_d-1))? I2D(nx_d,i+1,j-1) : I2D(nx_d,i-1,j-1) ) ) ;
REAL b_S = (j > 0 )? 0.0:
((j==0 && (i==0 || i==(nx_d-1)))? 0.0:
rby_d*(g_in.u[I2D(nx_d,i+1,j)] - g_in.u[I2D(nx_d,i-1,j)])) ;
REAL b_N = (j < (ny_d-1))? 0.0:
((j==(ny_d-1) && (i==0 || i==(nx_d-1)))? 0.0:
-rby_d*(g_in.u[I2D(nx_d,i+1,j)] - g_in.u[I2D(nx_d,i-1,j)])) ;
REAL b_W = (i > 0 )? 0.0:
((i==0 && (j==0 || j==(ny_d-1)))? 0.0:
rbx_d*(g_in.u[I2D(nx_d,i,j+1)] - g_in.u[I2D(nx_d,i,j-1)])) ;
REAL b_E = (i < (nx_d-1))? 0.0:
((i==(nx_d-1) && (j==0 || j==(ny_d-1)))? 0.0:
-rbx_d*(g_in.u[I2D(nx_d,i,j+1)] - g_in.u[I2D(nx_d,i,j-1)])) ;
du2dt += (
( b_S + b_N )*ry_d
+ ( b_W + b_E )*rx_d );
// Correcion to SW SE NW NE boundary conditions
REAL b_SW = (i>0 && j>0)? 0.0 :
((i==0 && j>1)? rbx_d*(g_in.u[i2d] - g_in.u[I2D(nx_d,i,j-2)]) :
((i>1 && j==0)? rby_d*(g_in.u[i2d] - g_in.u[I2D(nx_d,i-2,j)]) : 0.0)) ;
REAL b_SE = (i<(nx_d-1) && j>0)? 0.0 :
((i==(nx_d-1) && j>1)? -rbx_d*(g_in.u[i2d] - g_in.u[I2D(nx_d,i,j-2)]) :
((i<(nx_d-2) && j==0)? rby_d*(g_in.u[I2D(nx_d,i+2,j)] - g_in.u[i2d]) : 0.0)) ;
REAL b_NW = (i>0 && j<(ny_d-1)) ? 0.0 :
((i==0 && j<(ny_d-2)) ? rbx_d*(g_in.u[I2D(nx_d,i,j+2)] - g_in.u[i2d]) :
((i>1 && j==(ny_d-1))? -rby_d*(g_in.u[i2d] - g_in.u[I2D(nx_d,i-2,j)]) : 0.0)) ;
REAL b_NE = (i<(nx_d-1) && j<(ny_d-1)) ? 0.0 :
((i==(nx_d-1) && j<(ny_d-2)) ? -rbx_d*(g_in.u[I2D(nx_d,i,j+2)] - g_in.u[i2d]) :
((i<(nx_d-2) && j==(ny_d-1))? -rby_d*(g_in.u[I2D(nx_d,i+2,j)] - g_in.u[i2d]) : 0.0)) ;
du2dt += ( rxy_d * ( (g_in.u[SWxy] + b_SW) +
(g_in.u[NExy] + b_NE) -
(g_in.u[SExy] + b_SE) -
(g_in.u[NWxy] + b_NW) ) );
if ( gateDiff_d ) {
// Gate 1
REAL b_S = (j > 0 )? 0.0:
((j==0 && (i==0 || i==(nx_d-1)))? 0.0:
rby_d*(g_in.v[I2D(nx_d,i+1,j)] - g_in.v[I2D(nx_d,i-1,j)])) ;
REAL b_N = (j < (ny_d-1))? 0.0:
((j==(ny_d-1) && (i==0 || i==(nx_d-1)))? 0.0:
-rby_d*(g_in.v[I2D(nx_d,i+1,j)] - g_in.v[I2D(nx_d,i-1,j)])) ;
REAL b_W = (i > 0 )? 0.0:
((i==0 && (j==0 || j==(ny_d-1)))? 0.0:
rbx_d*(g_in.v[I2D(nx_d,i,j+1)] - g_in.v[I2D(nx_d,i,j-1)])) ;
REAL b_E = (i < (nx_d-1))? 0.0:
((i==(nx_d-1) && (j==0 || j==(ny_d-1)))? 0.0:
-rbx_d*(g_in.v[I2D(nx_d,i,j+1)] - g_in.v[I2D(nx_d,i,j-1)])) ;
dv2dt += (
( b_S + b_N )*ry_d
+ ( b_W + b_E )*rx_d );
// Correcion to SW SE NW NE boundary conditions
REAL b_SW = (i>0 && j>0)? 0.0 :
((i==0 && j>1)? rbx_d*(g_in.v[i2d] - g_in.v[I2D(nx_d,i,j-2)]) :
((i>1 && j==0)? rby_d*(g_in.v[i2d] - g_in.v[I2D(nx_d,i-2,j)]) : 0.0)) ;
REAL b_SE = (i<(nx_d-1) && j>0)? 0.0 :
((i==(nx_d-1) && j>1)? -rbx_d*(g_in.v[i2d] - g_in.v[I2D(nx_d,i,j-2)]) :
((i<(nx_d-2) && j==0)? rby_d*(g_in.v[I2D(nx_d,i+2,j)] - g_in.v[i2d]) : 0.0)) ;
REAL b_NW = (i>0 && j<(ny_d-1)) ? 0.0 :
((i==0 && j<(ny_d-2)) ? rbx_d*(g_in.v[I2D(nx_d,i,j+2)] - g_in.v[i2d]) :
((i>1 && j==(ny_d-1))? -rby_d*(g_in.v[i2d] - g_in.v[I2D(nx_d,i-2,j)]) : 0.0)) ;
REAL b_NE = (i<(nx_d-1) && j<(ny_d-1)) ? 0.0 :
((i==(nx_d-1) && j<(ny_d-2)) ? -rbx_d*(g_in.v[I2D(nx_d,i,j+2)] - g_in.v[i2d]) :
((i<(nx_d-2) && j==(ny_d-1))? -rby_d*(g_in.v[I2D(nx_d,i+2,j)] - g_in.v[i2d]) : 0.0)) ;
dv2dt += ( rxy_d * ( (g_in.v[SWxy] + b_SW) +
(g_in.v[NExy] + b_NE) -
(g_in.v[SExy] + b_SE) -
(g_in.v[NWxy] + b_NW) )*rscale_d );
}
}
}
} else { // Dirichlet bc
int S = I2D(nx_d,i,j-1);
int N = I2D(nx_d,i,j+1);
int W = I2D(nx_d,i-1,j);
int E = I2D(nx_d,i+1,j);
if ( solidSwitch_d ) {
bool sc = solid[i2d];
bool sw = solid[W];
bool se = solid[E];
bool sn = solid[N];
bool ss = solid[S];
REAL uS = sc && ss ? g_in.u[S] : boundaryVal_d;
REAL uN = sc && sn ? g_in.u[N] : boundaryVal_d;
REAL uW = sc && sw ? g_in.u[W] : boundaryVal_d;
REAL uE = sc && se ? g_in.u[E] : boundaryVal_d;
du2dt = (
( uW - 2.0*u + uE )*rx_d
+ ( uN - 2.0*u + uS )*ry_d );
if ( gateDiff_d ) {
REAL vS = sc && ss ? g_in.v[S] : boundaryVal_d;
REAL vN = sc && sn ? g_in.v[N] : boundaryVal_d;
REAL vW = sc && sw ? g_in.v[W] : boundaryVal_d;
REAL vE = sc && se ? g_in.v[E] : boundaryVal_d;
dv2dt = (
( vW - 2.0*v + vE )*rx_d*rscale_d
+ ( vN - 2.0*v + vS )*ry_d*rscale_d );
}
if ( anisotropy_d ) {
int SW = I2D(nx_d,i-1,j-1);
int SE = I2D(nx_d,i+1,j-1);
int NW = I2D(nx_d,i-1,j+1);
int NE = I2D(nx_d,i+1,j+1);
bool ssw = solid[SW];
bool sse = solid[SE];
bool snw = solid[NW];
bool sne = solid[NE];
REAL uSWxy = sc && ssw ? g_in.u[SW] : boundaryVal_d ;
REAL uSExy = sc && sse ? g_in.u[SE] : boundaryVal_d ;
REAL uNWxy = sc && snw ? g_in.u[NW] : boundaryVal_d ;
REAL uNExy = sc && sne ? g_in.u[NE] : boundaryVal_d ;
du2dt += ( rxy_d * ( uSWxy +
uNExy -
uSExy -
uNWxy ) );
if ( gateDiff_d ) {
REAL vSWxy = sc && ssw ? g_in.v[SW] : boundaryVal_d ;
REAL vSExy = sc && sse ? g_in.v[SE] : boundaryVal_d ;
REAL vNWxy = sc && snw ? g_in.v[NW] : boundaryVal_d ;
REAL vNExy = sc && sne ? g_in.v[NE] : boundaryVal_d ;
dv2dt += ( rxy_d * ( vSWxy +
vNExy -
vSExy -
vNWxy )*rscale_d );
}
}
} else { // Square boundary
REAL uS = j>0 ? g_in.u[S] : boundaryVal_d;
REAL uN = j<(ny_d-1) ? g_in.u[N] : boundaryVal_d;
REAL uW = i>0 ? g_in.u[W] : boundaryVal_d;
REAL uE = i<(nx_d-1) ? g_in.u[E] : boundaryVal_d;
du2dt = (
( uW - 2.0*u + uE )*rx_d
+ ( uN - 2.0*u + uS )*ry_d );
if ( gateDiff_d ) {
// Gate 1
REAL vS = j>0 ? g_in.v[S] : boundaryVal_d;
REAL vN = j<(ny_d-1) ? g_in.v[N] : boundaryVal_d;
REAL vW = i>0 ? g_in.v[W] : boundaryVal_d;
REAL vE = i<(nx_d-1) ? g_in.v[E] : boundaryVal_d;
dv2dt = (
( vW - 2.0*v + vE )*rx_d*rscale_d
+ ( vN - 2.0*v + vS )*ry_d*rscale_d );
}
if ( anisotropy_d ) {
REAL uSWxy = (i>0) && (j>0) ? g_in.u[I2D(nx_d,i-1,j-1)] : boundaryVal_d ;
REAL uSExy = (i<(nx_d-1)) && (j>0) ? g_in.u[I2D(nx_d,i+1,j-1)] : boundaryVal_d ;
REAL uNWxy = (i>0) && (j<(ny_d-1)) ? g_in.u[I2D(nx_d,i-1,j+1)] : boundaryVal_d ;
REAL uNExy = (i<(nx_d-1)) && (j<(ny_d-1)) ? g_in.u[I2D(nx_d,i+1,j+1)] : boundaryVal_d ;
du2dt += ( rxy_d * ( uSWxy +
uNExy -
uSExy -
uNWxy ) );
if ( gateDiff_d ) {
REAL vSWxy = (i>0) && (j>0) ? g_in.v[I2D(nx_d,i-1,j-1)] : boundaryVal_d ;
REAL vSExy = (i<(nx_d-1)) && (j>0) ? g_in.v[I2D(nx_d,i+1,j-1)] : boundaryVal_d ;
REAL vNWxy = (i>0) && (j<(ny_d-1)) ? g_in.v[I2D(nx_d,i-1,j+1)] : boundaryVal_d ;
REAL vNExy = (i<(nx_d-1)) && (j<(ny_d-1)) ? g_in.v[I2D(nx_d,i+1,j+1)] : boundaryVal_d ;
dv2dt += ( rxy_d * ( vSWxy +
vNExy -
vSExy -
vNWxy )*rscale_d );
}
}
}
}
/*------------------------------------------------------------------------
* RHS
*------------------------------------------------------------------------
*/
// Compute the right hand side of the equations
du2dt -= dt_d*I_sum ; // f(t, y_n + 1/2*k)
dv2dt -= dt_d*I_v ;
// RK4 final sum
rhs_u += ( sumrk4[rk4idx]*du2dt );
rhs_v += ( sumrk4[rk4idx]*dv2dt );
} // RK4 loop ends
// Retrieve initial condition
g_in.u[i2d] = u0;
g_in.v[i2d] = v0;
// Update
u0 += tc_d*rhs_u;
v0 += tc_d*rhs_v;
if ( solidSwitch_d ) {
bool sc = solid[i2d];
if ( gateDiff_d ) {
g_out.u[i2d] = sc ? u0 : 0.0;
g_out.v[i2d] = sc ? v0 : 0.0;
/*------------------------------------------------------------------------
* Calculate velocity tangent
*------------------------------------------------------------------------
*/
velTan.u[i2d] = sc ? rhs_u / dt_d : 0.0;
velTan.v[i2d] = sc ? rhs_v / dt_d : 0.0;
} else {
g_out.u[i2d] = sc ? u0 : 0.0;
g_out.v[i2d] = sc ? v0 : 0.0;
}
} else {
if ( gateDiff_d ) {
g_out.u[i2d] = u0;
g_out.v[i2d] = v0;
/*------------------------------------------------------------------------
* Calculate velocity tangent
*------------------------------------------------------------------------
*/
velTan.u[i2d] = rhs_u / dt_d ;
velTan.v[i2d] = rhs_v / dt_d ;
} else {
g_out.u[i2d] = u0;
g_out.v[i2d] = v0;
}
}
}
}
void reactionDiffusion_wrapper(size_t pitch, dim3 grid2D, dim3 block2D,
stateVar gOut_d, stateVar gIn_d, stateVar J,
stateVar velTan, bool reduceSym, bool *solid, bool stimLock, REAL *stim,
bool stimLockMouse, int2 point) {
reactionDiffusion_kernel<<<grid2D, block2D>>>(pitch,gOut_d,gIn_d,J,
velTan,reduceSym,solid,stimLock,stim,stimLockMouse,point);
CudaCheckError();
}