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fix tests not scaling with grid spacing
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austin 2024-12-17 17:37:41 -05:00
parent abb48d7a1a
commit 4e1f29a718
3 changed files with 103 additions and 38 deletions
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78
src/main/c/src/fluid/sim/pressurecell/density.c
View File

@ -54,6 +54,62 @@ LIBRARY_API void pressurecell_diffuse_density(Environment * environment, Chunk *
if(bounds[IX(x,y,z)] > 0){
continue;
}
// if(x == 4 && y == 4 && z == 4){
// printf("arrs\n");
// printf("%f \n", densityArr[IX(x,y,z)]);
// printf("%f \n", densityArr[IX(x-1,y,z)]);
// printf("%f \n", densityArr[IX(x+1,y,z)]);
// printf("%f \n", densityArr[IX(x,y-1,z)]);
// printf("%f \n", densityArr[IX(x,y+1,z)]);
// printf("%f \n", densityArr[IX(x,y,z-1)]);
// printf("%f \n", densityArr[IX(x,y,z+1)]);
// printf("bounds\n");
// printf("%f \n", bounds[IX(x-1,y,z)]);
// printf("%f \n", bounds[IX(x+1,y,z)]);
// printf("%f \n", bounds[IX(x,y-1,z)]);
// printf("%f \n", bounds[IX(x,y+1,z)]);
// printf("%f \n", bounds[IX(x,y,z-1)]);
// printf("%f \n", bounds[IX(x,y,z+1)]);
// printf("a: %f \n", a);
// float boundSum = -(
// (1.0f - bounds[IX(x-1,y,z)]) +
// (1.0f - bounds[IX(x+1,y,z)]) +
// (1.0f - bounds[IX(x,y-1,z)]) +
// (1.0f - bounds[IX(x,y+1,z)]) +
// (1.0f - bounds[IX(x,y,z-1)]) +
// (1.0f - bounds[IX(x,y,z+1)])
// );
// printf("boundSum: %f\n", boundSum);
// float neighborSum = (
// densityArr[IX(x-1,y,z)] * (1.0f - bounds[IX(x-1,y,z)]) +
// densityArr[IX(x+1,y,z)] * (1.0f - bounds[IX(x+1,y,z)]) +
// densityArr[IX(x,y-1,z)] * (1.0f - bounds[IX(x,y-1,z)]) +
// densityArr[IX(x,y+1,z)] * (1.0f - bounds[IX(x,y+1,z)]) +
// densityArr[IX(x,y,z-1)] * (1.0f - bounds[IX(x,y,z-1)]) +
// densityArr[IX(x,y,z+1)] * (1.0f - bounds[IX(x,y,z+1)])
// );
// printf("neighborSum: %f\n", neighborSum);
// float combined = densityArr[IX(x,y,z)] * -(
// (1.0f - bounds[IX(x-1,y,z)]) +
// (1.0f - bounds[IX(x+1,y,z)]) +
// (1.0f - bounds[IX(x,y-1,z)]) +
// (1.0f - bounds[IX(x,y+1,z)]) +
// (1.0f - bounds[IX(x,y,z-1)]) +
// (1.0f - bounds[IX(x,y,z+1)])
// ) +
// (
// densityArr[IX(x-1,y,z)] * (1.0f - bounds[IX(x-1,y,z)]) +
// densityArr[IX(x+1,y,z)] * (1.0f - bounds[IX(x+1,y,z)]) +
// densityArr[IX(x,y-1,z)] * (1.0f - bounds[IX(x,y-1,z)]) +
// densityArr[IX(x,y+1,z)] * (1.0f - bounds[IX(x,y+1,z)]) +
// densityArr[IX(x,y,z-1)] * (1.0f - bounds[IX(x,y,z-1)]) +
// densityArr[IX(x,y,z+1)] * (1.0f - bounds[IX(x,y,z+1)])
// );
// printf("combined: %f\n", combined);
// float modified = combined * a;
// printf("modified: %f\n", modified);
// }
densityTemp[IX(x,y,z)] = densityArr[IX(x,y,z)] +
(
densityArr[IX(x,y,z)] * -(
@ -77,17 +133,17 @@ LIBRARY_API void pressurecell_diffuse_density(Environment * environment, Chunk *
}
}
}
for(x = 1; x < DIM-1; x++){
for(y = 1; y < DIM-1; y++){
//diffuse back into the grid
densityTemp[IX(1,x,y)] = densityTemp[IX(1,x,y)] + densityTemp[IX(0,x,y)];
densityTemp[IX(DIM-2,x,y)] = densityTemp[IX(DIM-2,x,y)] + densityTemp[IX(DIM-1,x,y)];
densityTemp[IX(x,1,y)] = densityTemp[IX(x,1,y)] + densityTemp[IX(x,0,y)];
densityTemp[IX(x,DIM-2,y)] = densityTemp[IX(x,DIM-2,y)] + densityTemp[IX(x,DIM-1,y)];
densityTemp[IX(x,y,1)] = densityTemp[IX(x,y,1)] + densityTemp[IX(x,y,0)];
densityTemp[IX(x,y,DIM-2)] = densityTemp[IX(x,y,DIM-2)] + densityTemp[IX(x,y,DIM-1)];
}
}
// for(x = 1; x < DIM-1; x++){
// for(y = 1; y < DIM-1; y++){
// //diffuse back into the grid
// densityTemp[IX(1,x,y)] = densityTemp[IX(1,x,y)] + densityTemp[IX(0,x,y)];
// densityTemp[IX(DIM-2,x,y)] = densityTemp[IX(DIM-2,x,y)] + densityTemp[IX(DIM-1,x,y)];
// densityTemp[IX(x,1,y)] = densityTemp[IX(x,1,y)] + densityTemp[IX(x,0,y)];
// densityTemp[IX(x,DIM-2,y)] = densityTemp[IX(x,DIM-2,y)] + densityTemp[IX(x,DIM-1,y)];
// densityTemp[IX(x,y,1)] = densityTemp[IX(x,y,1)] + densityTemp[IX(x,y,0)];
// densityTemp[IX(x,y,DIM-2)] = densityTemp[IX(x,y,DIM-2)] + densityTemp[IX(x,y,DIM-1)];
// }
// }
}
/**

5
src/test/c/fluid/sim/pressurecell/bounds_tests.c
View File

@ -40,6 +40,7 @@ int fluid_sim_pressurecell_bounds_test1(){
//setup chunk values
float deltaDensity = 0.01f;
Chunk * currentChunk = queue[0];
float interpConst = 1.0f / FLUID_PRESSURECELL_SPACING;
currentChunk->vTempCache[IX(1,1,1)] = -0.8;
currentChunk->bounds[CENTER_LOC][IX(1,0,1)] = 1.0f;
@ -77,6 +78,7 @@ int fluid_sim_pressurecell_bounds_test2(){
//setup chunk values
float deltaDensity = 0.01f;
Chunk * currentChunk = queue[0];
float interpConst = 1.0f / FLUID_PRESSURECELL_SPACING;
currentChunk->vTempCache[IX(1,1,1)] = -0.8;
currentChunk->dTempCache[IX(1,1,1)] = MAX_FLUID_VALUE;
currentChunk->bounds[CENTER_LOC][IX(1,0,1)] = 1.0f;
@ -116,6 +118,7 @@ int fluid_sim_pressurecell_bounds_test3(){
//setup chunk values
float deltaDensity = 0.01f;
Chunk * currentChunk = queue[0];
float interpConst = 1.0f / FLUID_PRESSURECELL_SPACING;
currentChunk->vTempCache[IX(1,1,1)] = -0.8;
currentChunk->dTempCache[IX(1,1,1)] = MAX_FLUID_VALUE;
currentChunk->bounds[CENTER_LOC][IX(1,0,1)] = 1.0f;
@ -129,7 +132,7 @@ int fluid_sim_pressurecell_bounds_test3(){
//
// cell that originall had values
//
expected = MAX_FLUID_VALUE - MAX_FLUID_VALUE * env->consts.dt;
expected = MAX_FLUID_VALUE - MAX_FLUID_VALUE * -currentChunk->vTempCache[IX(1,1,1)] * env->consts.dt * interpConst;
actual = chunk_sum_density(currentChunk);
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to enforce advection bounds! expected: %f actual: %f \n");

58
src/test/c/fluid/sim/pressurecell/diffuse_tests.c
View File

@ -40,6 +40,7 @@ int fluid_sim_pressurecell_diffuse_test1(){
//setup chunk values
Chunk * currentChunk = queue[0];
currentChunk->d[CENTER_LOC][IX(4,4,4)] = MAX_FLUID_VALUE;
float diffuseConst = FLUID_PRESSURECELL_DIFFUSION_CONSTANT / (FLUID_PRESSURECELL_SPACING * FLUID_PRESSURECELL_SPACING);
//actually simulate
pressurecell_diffuse_density(env,currentChunk);
@ -50,7 +51,7 @@ int fluid_sim_pressurecell_diffuse_test1(){
//
// cell that originall had values
//
expected = MAX_FLUID_VALUE - FLUID_PRESSURECELL_DIFFUSION_CONSTANT * 6 * MAX_FLUID_VALUE * env->consts.dt;
expected = MAX_FLUID_VALUE - diffuseConst * 6 * MAX_FLUID_VALUE * env->consts.dt;
actual = currentChunk->dTempCache[IX(4,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (4,4,4)! expected: %f actual: %f \n");
@ -60,37 +61,37 @@ int fluid_sim_pressurecell_diffuse_test1(){
//
// neighbors
//
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = currentChunk->dTempCache[IX(3,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (3,4,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = currentChunk->dTempCache[IX(5,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN * env->consts.dt){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (5,4,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = currentChunk->dTempCache[IX(4,3,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (4,3,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = currentChunk->dTempCache[IX(4,5,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (4,5,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = currentChunk->dTempCache[IX(4,4,3)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (4,4,3)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = currentChunk->dTempCache[IX(4,4,5)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (4,4,5)! expected: %f actual: %f \n");
@ -121,6 +122,7 @@ int fluid_sim_pressurecell_diffuse_test2(){
uTemp[IX(4,4,4)] = FLUID_PRESSURECELL_MAX_VELOCITY;
vTemp[IX(4,4,4)] = FLUID_PRESSURECELL_MAX_VELOCITY;
wTemp[IX(4,4,4)] = FLUID_PRESSURECELL_MAX_VELOCITY;
float diffuseConst = FLUID_PRESSURECELL_DIFFUSION_CONSTANT / (FLUID_PRESSURECELL_SPACING * FLUID_PRESSURECELL_SPACING);
//actually simulate
pressurecell_diffuse_velocity(env,currentChunk);
@ -130,7 +132,7 @@ int fluid_sim_pressurecell_diffuse_test2(){
//
// cell that originall had values
//
expected = MAX_FLUID_VALUE - FLUID_PRESSURECELL_DIFFUSION_CONSTANT * 6 * MAX_FLUID_VALUE * env->consts.dt;
expected = MAX_FLUID_VALUE - diffuseConst * 6 * MAX_FLUID_VALUE * env->consts.dt;
actual = uArr[IX(4,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (4,4,4)! expected: %f actual: %f \n");
@ -140,37 +142,37 @@ int fluid_sim_pressurecell_diffuse_test2(){
//
// neighbors
//
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = uArr[IX(3,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (3,4,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = uArr[IX(5,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (5,4,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = uArr[IX(4,3,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (4,3,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = uArr[IX(4,5,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (4,5,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = uArr[IX(4,4,3)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (4,4,3)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = uArr[IX(4,4,5)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (4,4,5)! expected: %f actual: %f \n");
@ -197,6 +199,7 @@ int fluid_sim_pressurecell_diffuse_test3(){
float * dArr = currentChunk->d[CENTER_LOC];
float * dTemp = currentChunk->dTempCache;
float * bounds = currentChunk->bounds[CENTER_LOC];
float diffuseConst = FLUID_PRESSURECELL_DIFFUSION_CONSTANT / (FLUID_PRESSURECELL_SPACING * FLUID_PRESSURECELL_SPACING);
dArr[IX(4,4,4)] = MAX_FLUID_VALUE;
bounds[IX(4,5,4)] = 1.0f;
@ -209,7 +212,7 @@ int fluid_sim_pressurecell_diffuse_test3(){
//
// cell that originall had values
//
expected = MAX_FLUID_VALUE - FLUID_PRESSURECELL_DIFFUSION_CONSTANT * 5 * MAX_FLUID_VALUE * env->consts.dt;
expected = MAX_FLUID_VALUE - diffuseConst * 5 * MAX_FLUID_VALUE * env->consts.dt;
actual = dTemp[IX(4,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (4,4,4)! expected: %f actual: %f \n");
@ -219,19 +222,19 @@ int fluid_sim_pressurecell_diffuse_test3(){
//
// neighbors
//
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = dTemp[IX(3,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (3,4,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = dTemp[IX(5,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN * env->consts.dt){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (5,4,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = dTemp[IX(4,3,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (4,3,4)! expected: %f actual: %f \n");
@ -243,13 +246,13 @@ int fluid_sim_pressurecell_diffuse_test3(){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (4,5,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = dTemp[IX(4,4,3)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (4,4,3)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * MAX_FLUID_VALUE * env->consts.dt;
expected = diffuseConst * MAX_FLUID_VALUE * env->consts.dt;
actual = dTemp[IX(4,4,5)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse density correctly (4,4,5)! expected: %f actual: %f \n");
@ -276,6 +279,7 @@ int fluid_sim_pressurecell_diffuse_test4(){
float * dArr = currentChunk->d[CENTER_LOC];
float * dTemp = currentChunk->dTempCache;
float * bounds = currentChunk->bounds[CENTER_LOC];
float diffuseConst = FLUID_PRESSURECELL_DIFFUSION_CONSTANT / (FLUID_PRESSURECELL_SPACING * FLUID_PRESSURECELL_SPACING);
dArr[IX(4,4,4)] = MAX_FLUID_VALUE;
bounds[IX(3,4,4)] = 1.0f;
bounds[IX(5,4,4)] = 1.0f;
@ -363,6 +367,7 @@ int fluid_sim_pressurecell_diffuse_test5(){
float * wTemp = currentChunk->wTempCache;
float * uArr = currentChunk->u0[CENTER_LOC];
float * bounds = currentChunk->bounds[CENTER_LOC];
float diffuseConst = FLUID_PRESSURECELL_DIFFUSION_CONSTANT / (FLUID_PRESSURECELL_SPACING * FLUID_PRESSURECELL_SPACING);
uTemp[IX(4,4,4)] = FLUID_PRESSURECELL_MAX_VELOCITY;
vTemp[IX(4,4,4)] = FLUID_PRESSURECELL_MAX_VELOCITY;
wTemp[IX(4,4,4)] = FLUID_PRESSURECELL_MAX_VELOCITY;
@ -376,7 +381,7 @@ int fluid_sim_pressurecell_diffuse_test5(){
//
// cell that originall had values
//
expected = FLUID_PRESSURECELL_MAX_VELOCITY - FLUID_PRESSURECELL_DIFFUSION_CONSTANT * 5 * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
expected = FLUID_PRESSURECELL_MAX_VELOCITY - diffuseConst * 5 * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
actual = uArr[IX(4,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (4,4,4)! expected: %f actual: %f \n");
@ -386,7 +391,7 @@ int fluid_sim_pressurecell_diffuse_test5(){
//
// neighbors
//
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
expected = diffuseConst * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
actual = uArr[IX(3,4,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (3,4,4)! expected: %f actual: %f \n");
@ -398,25 +403,25 @@ int fluid_sim_pressurecell_diffuse_test5(){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (5,4,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
expected = diffuseConst * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
actual = uArr[IX(4,3,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (4,3,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
expected = diffuseConst * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
actual = uArr[IX(4,5,4)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (4,5,4)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
expected = diffuseConst * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
actual = uArr[IX(4,4,3)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (4,4,3)! expected: %f actual: %f \n");
}
expected = FLUID_PRESSURECELL_DIFFUSION_CONSTANT * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
expected = diffuseConst * FLUID_PRESSURECELL_MAX_VELOCITY * env->consts.dt;
actual = uArr[IX(4,4,5)];
if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
rVal += assertEqualsFloat(expected,actual,"Failed to diffuse velocity correctly (4,4,5)! expected: %f actual: %f \n");
@ -445,6 +450,7 @@ int fluid_sim_pressurecell_diffuse_test6(){
float * wTemp = currentChunk->wTempCache;
float * uArr = currentChunk->u0[CENTER_LOC];
float * bounds = currentChunk->bounds[CENTER_LOC];
float diffuseConst = FLUID_PRESSURECELL_DIFFUSION_CONSTANT / (FLUID_PRESSURECELL_SPACING * FLUID_PRESSURECELL_SPACING);
uTemp[IX(4,4,4)] = FLUID_PRESSURECELL_MAX_VELOCITY;
vTemp[IX(4,4,4)] = FLUID_PRESSURECELL_MAX_VELOCITY;
wTemp[IX(4,4,4)] = FLUID_PRESSURECELL_MAX_VELOCITY;