Terrain::~Terrain(void)
{
glDeleteBuffers(1, &vboId);
glDeleteBuffers(1, &eboId);
SAFE_DELETE_ARRAY_PTR( heightMap );
SAFE_DELETE_ARRAY_PTR(vertices);
SAFE_DELETE_ARRAY_PTR(normals);
SAFE_DELETE_ARRAY_PTR(elements);
}
void Terrain::loadHeightMap(string filename, int res_x, int res_y)
{
PNG inputFile;
inputFile.load(filename);
dim_x = inputFile.width;
dim_y = inputFile.height;
unsigned char * data = inputFile.getData();
int size = dim_x*dim_y;
float * originalHeightMap = new float[size];
int i,x,y;
for (i=0; i<size; i++){
originalHeightMap[i] = 256*data[2*i]+data[2*i + 1];
}
// recalculate to the given resolution (use linear interpolation...)
size = res_x*res_y;
heightMap = new float[size];
float step_x = float(dim_x)/float(res_x);
float step_y = float(dim_y)/float(res_y);
for(x=0; x<res_x; x++)
{
for(y=0; y<res_y; y++)
{
heightMap[x*res_y + y] = getHeightAt(originalHeightMap, dim_x, dim_y, float(x*step_x), float(y*step_y));
}
}
SAFE_DELETE_ARRAY_PTR(originalHeightMap);
}
int CLDEditTxtFile::_fgets(CSimpleArray<CString>& arrFileItems)
{
int nRet = -1;
USES_CONVERSION;
arrFileItems.RemoveAll();
HANDLE hFile = INVALID_HANDLE_VALUE;
hFile = CreateFile(m_strTxtFile, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (INVALID_HANDLE_VALUE == hFile)
return nRet;
char *pszFileBuffer = NULL;
do
{
DWORD dwFileSize = 0;
dwFileSize = ::GetFileSize(hFile, NULL);
if (0 == dwFileSize || dwFileSize > 1*1024*1024)//大于1M的文件默认任务失败
break;
dwFileSize += 1;
pszFileBuffer = new char[dwFileSize];
ZeroMemory(pszFileBuffer, dwFileSize);
DWORD dwRetSize = 0;
if (FALSE == ReadFile(hFile, pszFileBuffer, dwFileSize, &dwRetSize, NULL) || 0 == dwRetSize)
break;
int nFind = -1;
CString strValue;//(CA2W(pszFileBuffer));
strValue = CA2W(pszFileBuffer);
if (FALSE == strValue.IsEmpty())
strValue += TEXT("\r\n");
nFind = strValue.Find('\n');
while(nFind >= 0)
{
if (NULL != m_pStop && TRUE == *m_pStop)
break;
CString strTmp;
strTmp = strValue.Left(nFind+1);
arrFileItems.Add(strTmp);
strValue = strValue.Mid(nFind+1);
nFind = -1;
nFind = strValue.Find('\n');
}
nRet = 0;
} while (FALSE);
if (INVALID_HANDLE_VALUE != hFile)
CloseHandle(hFile);
hFile = NULL;
SAFE_DELETE_ARRAY_PTR(pszFileBuffer);
return nRet;
}
