int main()
{
grid_t g;
for(int i = 0; i < 9; i++) {
for(int j = 0; j < 9; j++) {
g.grid[i][j] = 0;
}
}
g.grid[2][0] = 8;
g.grid[3][0] = 2;
g.grid[8][0] = 5;
g.grid[4][1] = 6;
g.grid[6][1] = 1;
g.grid[8][1] = 4;
g.grid[0][2] = 9;
g.grid[2][2] = 4;
g.grid[4][2] = 1;
g.grid[6][2] = 7;
g.grid[8][2] = 8;
g.grid[0][3] = 4;
g.grid[6][3] = 5;
g.grid[2][4] = 2;
g.grid[3][4] = 5;
g.grid[5][4] = 3;
g.grid[7][4] = 8;
g.grid[8][4] = 1;
g.grid[0][5] = 5;
g.grid[4][5] = 8;
g.grid[7][5] = 7;
g.grid[2][6] = 1;
g.grid[3][6] = 9;
g.grid[7][6] = 5;
g.grid[3][7] = 1;
g.grid[1][8] = 5;
g.grid[2][8] = 9;
g.grid[3][8] = 8;
g.grid[5][8] = 2;
g.grid[7][8] = 1;
g.grid[8][8] = 3;
Boltzmann solver(g);
while(1) {
solver.simulate(false);
dumpGrid(solver.getGrid());
}
}
static byte_t * getRawHeightfieldData(eTerrainModel model, PHY_ScalarType type, btScalar& minHeight, btScalar& maxHeight){
// std::cerr << "\nRegenerating terrain\n";
// std::cerr << " model = " << model << "\n";
// std::cerr << " type = " << type << "\n";
long nElements = ((long) s_gridSize) * s_gridSize;
// std::cerr << " nElements = " << nElements << "\n";
int bytesPerElement = sizeof(float);
// std::cerr << " bytesPerElement = " << bytesPerElement << "\n";
btAssert(bytesPerElement > 0 && "bad bytes per element");
long nBytes = nElements * bytesPerElement;
// std::cerr << " nBytes = " << nBytes << "\n";
byte_t * raw = new byte_t[nBytes];
btAssert(raw && "out of memory");
// reseed randomization every 30 seconds
// srand(time(NULL) / 30);
// populate based on model
setRadial(raw, bytesPerElement, type);
if (0) {
// inside if(0) so it keeps compiling but isn't
// exercised and doesn't cause warnings
// std::cerr << "final grid:\n";
dumpGrid(raw, bytesPerElement, type, s_gridSize - 1);
}
// find min/max
for (int i = 0; i < s_gridSize; ++i) {
for (int j = 0; j < s_gridSize; ++j) {
float z = getGridHeight(raw, i, j, type);
// std::cerr << "i=" << i << ", j=" << j << ": z=" << z << "\n";
// update min/max
if (!i && !j) {
minHeight = z;
maxHeight = z;
} else {
if (z < minHeight) {
minHeight = z;
}
if (z > maxHeight) {
maxHeight = z;
}
}
}
}
if (maxHeight < -minHeight) {
maxHeight = -minHeight;
}
if (minHeight > -maxHeight) {
minHeight = -maxHeight;
}
// std::cerr << " minHeight = " << minHeight << "\n";
// std::cerr << " maxHeight = " << maxHeight << "\n";
return raw;
}