lauchmelder/NumericalMethods
1
0
Fork 0
Code Issues Pull requests Actions Packages Projects Releases Wiki Activity

changed controls

Browse source
This commit is contained in:
Lauchmelder 2021-12-10 02:59:15 +01:00
parent 4eebb5821d
commit bd061968dc
1 changed files with 12 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
src/FluidField.cpp
View file

@ -48,6 +48,7 @@ FluidField::~FluidField()
void FluidField::AddSource(int x, int y, double dens, double dt)
{
PVALUE(density, x, y) += dt * dens;
PVALUE(density, x, y) = std::max(PVALUE(density, x, y), 0.0);
}
void FluidField::ApplyBoundaryConditions(BoundaryCondition condition, std::vector<double>& field)
@ -128,11 +129,19 @@ void FluidField::DensityStep(double diff, double dt)
// AddSource(3, 50, 60.0, dt);
int x, y;
SDL_GetMouseState(&x, &y);
Uint32 buttons = SDL_GetMouseState(&x, &y);
int dx = (double)(this->size - 2) / (double)(990 - 10) * (double)(x - 10);
int dy = (double)(this->size - 2) / (double)(990 - 10) * (double)(y - 10);
if(dx > 1 && dx < this->size - 2 && dy > 1 && dy < this->size - 2)
AddSource(dx, dy, 60.0, dt);
int factor = 0;
if (buttons & SDL_BUTTON_LMASK)
factor = 1;
else if (buttons & SDL_BUTTON_RMASK)
factor = -1;
if(dx > 0 && dx < this->size - 1 && dy > 0 && dy < this->size - 1)
AddSource(dx, dy, 60.0 * factor, dt);
std::swap(prevDensity, density);
Diffuse(diff, dt);