std::vector<AGObject*> GeneratePattern(double left, double right,
                                       double top, double bottom,
                                       double resolution, AG_ObjectType patternType,
                                       AG_PolygoneType polygoneType, double dotwidth,
                                       double dotheight, double horspace,
                                       double verspace, double angle,
                                       AG_RasterType rasterType, double stroke,
                                       AG_CMYKColor strokeColor, AG_CMYKColor fillColor,
                                       unsigned char* imageMask, long columns,
                                       long rows, long nextline, double maskGap,
                                       AG_PositionType maskPosition, bool inverse) {
std::vector<AGObject*> myPattern;
myPattern.clear();

return myPattern;
};

NSBitmapImageRep *greyImageRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL /* bitmap, allocate thyself! */
                                                      pixelsWide:[tempImageRep pixelsWide]
                                                      pixelsHigh:[tempImageRep pixelsHigh]
                                                   bitsPerSample:8
                                                 samplesPerPixel:1
                                                        hasAlpha:NO
                                                        isPlanar:NO
                                                  colorSpaceName:NSDeviceWhiteColorSpace
                                                     bytesPerRow:[tempImageRep pixelsWide]
                                                    bitsPerPixel:8]; // this specifies the pixel format
unsigned char *data = [tempImageRep bitmapData];`