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fix border behavior in reflection function
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austin 2024-12-13 17:08:40 -05:00
parent ab5c556c4c
commit db388b9b1f
1 changed files with 24 additions and 24 deletions
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48
src/main/c/src/fluid/sim/grid2/utilities.c
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@ -69,16 +69,16 @@ void fluid_grid2_set_bounds_reflection(
//x-direction boundary planes
if(vector_dir==BOUND_SET_VECTOR_DIFFUSE_PHI_U || vector_dir==BOUND_SET_VECTOR_U){
// if(boundsArr[IX(0,x,y)] > 0){
if(boundsArr[IX(0,x,y)] > 0){
target[IX(0,x,y)] = -target[IX(1,x,y)];
// } else {
// target[IX(0,x,y)] = target[IX(1,x,y)];
// }
// if(boundsArr[IX(DIM-1,x,y)] > 0){
} else {
target[IX(0,x,y)] = 0;
}
if(boundsArr[IX(DIM-1,x,y)] > 0){
target[IX(DIM-1,x,y)] = -target[IX(DIM-2,x,y)];
// } else {
// target[IX(DIM-1,x,y)] = target[IX(DIM-2,x,y)];
// }
} else {
target[IX(DIM-1,x,y)] = 0;
}
} else {
target[IX(0,x,y)] = target[IX(1,x,y)];
target[IX(DIM-1,x,y)] = target[IX(DIM-2,x,y)];
@ -86,16 +86,16 @@ void fluid_grid2_set_bounds_reflection(
//y-direction boundary planes
if(vector_dir==BOUND_SET_VECTOR_DIFFUSE_PHI_V || vector_dir==BOUND_SET_VECTOR_V){
// if(boundsArr[IX(x,0,y)] > 0){
if(boundsArr[IX(x,0,y)] > 0){
target[IX(x,0,y)] = -target[IX(x,1,y)];
// } else {
// target[IX(x,0,y)] = target[IX(x,1,y)];
// }
// if(boundsArr[IX(x,DIM-1,y)] > 0){
} else {
target[IX(x,0,y)] = 0;
}
if(boundsArr[IX(x,DIM-1,y)] > 0){
target[IX(x,DIM-1,y)] = -target[IX(x,DIM-2,y)];
// } else {
// target[IX(x,DIM-1,y)] = target[IX(x,DIM-2,y)];
// }
} else {
target[IX(x,DIM-1,y)] = 0;
}
} else {
target[IX(x,0,y)] = target[IX(x,1,y)];
target[IX(x,DIM-1,y)] = target[IX(x,DIM-2,y)];
@ -103,16 +103,16 @@ void fluid_grid2_set_bounds_reflection(
//z-direction boundary planes
if(vector_dir==BOUND_SET_VECTOR_DIFFUSE_PHI_W || vector_dir==BOUND_SET_VECTOR_W){
// if(boundsArr[IX(x,y,0)] > 0){
if(boundsArr[IX(x,y,0)] > 0){
target[IX(x,y,0)] = -target[IX(x,y,1)];
// } else {
// target[IX(x,y,0)] = target[IX(x,y,1)];
// }
// if(boundsArr[IX(x,y,DIM-1)] > 0){
} else {
target[IX(x,y,0)] = 0;
}
if(boundsArr[IX(x,y,DIM-1)] > 0){
target[IX(x,y,DIM-1)] = -target[IX(x,y,DIM-2)];
// } else {
// target[IX(x,y,DIM-1)] = -target[IX(x,y,DIM-2)];
// }
} else {
target[IX(x,y,DIM-1)] = 0;
}
} else {
target[IX(x,y,0)] = target[IX(x,y,1)];
target[IX(x,y,DIM-1)] = target[IX(x,y,DIM-2)];