Get the value of a pixel in a map.
bool CExtAPI::map_GetPixel(ZMAP hMap, long x, long y, void* pValue);
Name | Type | Comment |
---|---|---|
hMap | ZMAP | A ZMAP handle to a map, the pixel of which is to be retrieved. |
x | long | The x-coordinate of the pixel. |
y | long | The y-coordinate of the pixel. |
pValue | void* | A pointer (of unknown type) to the user-supplied entity that shall receive the pixel value. |
False if an error occurred, and true otherwise.
None.
int nx = theAPI.map_GetWidth(hMap); int ny = theAPI.map_GetHeight(hMap); // check the map type before messing with pixels if(theAPI.map_GetTypeID(hMap)!=MAP_Heightfield) return false; float val; // step through all pixels for(int j=0; j<ny; j++) { for(int i=0; i<nx; i++) { if(!theAPI.map_GetPixel(hMap, i, j, &val)) // get the pixel value return false; val+=10.0f; // increment the value by 10 if(!theAPI.map_SetPixel(hMap, i, j, &val)) // set the pixel value again return false; } } return true;