public String GetTerrainTypeName(eTerrainModel model)
{
switch (model)
{
case eTerrainModel.eRadial:
return("Radial");
case eTerrainModel.eFractal:
return("Fractal");
default:
Debug.Assert(false, "bad terrain model type");
break;
}
return(null);
}
public byte[] GetRawHeightfieldData(eTerrainModel model,PHY_ScalarType type,ref float minHeight,ref float 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 = GetByteSize(type);
// std::cerr << " bytesPerElement = " << bytesPerElement << "\n";
Debug.Assert(bytesPerElement > 0,"bad bytes per element");
long nBytes = nElements * bytesPerElement;
// std::cerr << " nBytes = " << nBytes << "\n";
byte[] raw = new byte[nBytes];
Debug.Assert(raw != null ,"out of memory");
// reseed randomization every 30 seconds
// srand(time(NULL) / 30);
// populate based on model
switch (model)
{
case eTerrainModel.eRadial:
SetRadial(raw, bytesPerElement, type);
break;
case eTerrainModel.eFractal:
for (int i = 0; i < nBytes; i++)
{
raw[i] = 0;
}
SetFractal(raw,0, bytesPerElement, type, s_gridSize - 1);
break;
default:
Debug.Assert(false,"bad model type");
break;
}
if (false)
{
// 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 == 0 && j == 0)
{
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;
}
public String GetTerrainTypeName(eTerrainModel model)
{
switch (model)
{
case eTerrainModel.eRadial:
return "Radial";
case eTerrainModel.eFractal:
return "Fractal";
default:
Debug.Assert(false,"bad terrain model type");
break;
}
return null;
}
public byte[] GetRawHeightfieldData(eTerrainModel model, PHY_ScalarType type, ref float minHeight, ref float 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 = GetByteSize(type);
// std::cerr << " bytesPerElement = " << bytesPerElement << "\n";
Debug.Assert(bytesPerElement > 0, "bad bytes per element");
long nBytes = nElements * bytesPerElement;
// std::cerr << " nBytes = " << nBytes << "\n";
byte[] raw = new byte[nBytes];
Debug.Assert(raw != null, "out of memory");
// reseed randomization every 30 seconds
// srand(time(NULL) / 30);
// populate based on model
switch (model)
{
case eTerrainModel.eRadial:
SetRadial(raw, bytesPerElement, type);
break;
case eTerrainModel.eFractal:
for (int i = 0; i < nBytes; i++)
{
raw[i] = 0;
}
SetFractal(raw, 0, bytesPerElement, type, s_gridSize - 1);
break;
default:
Debug.Assert(false, "bad model type");
break;
}
if (false)
{
// 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 == 0 && j == 0)
{
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);
}