本文整理汇总了C++中OGRMultiPolygon::exportToWkt方法的典型用法代码示例。如果您正苦于以下问题：C++ OGRMultiPolygon::exportToWkt方法的具体用法？C++ OGRMultiPolygon::exportToWkt怎么用？C++ OGRMultiPolygon::exportToWkt使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类OGRMultiPolygon的用法示例。
在下文中一共展示了OGRMultiPolygon::exportToWkt方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
//.........这里部分代码省略.........
std::cerr << "Error: geometry must be Polygon or MultiPolygon" << std::endl;
return 1;
}
}
//-- reading from WKT stored in first line of a text file
else if (strcmp(argv[argNum], "-f") == 0) {
unsigned int bufferSize = 100000000;
char *inputWKT = (char *)malloc(bufferSize*sizeof(char));
if (argNum + 1 <= argc - 1 && argv[argNum+1][0] != '-') {
std::ifstream infile(argv[argNum+1], std::ifstream::in);
infile.getline(inputWKT, bufferSize);
++argNum;
} else {
std::cerr << "Error: Missing input file name." << std::endl;
return 1;
}
OGRGeometryFactory::createFromWkt(&inputWKT, NULL, &geometry);
if (geometry == NULL) {
std::cout << "Error: WKT is not valid" << std::endl;
return 1;
}
}
//-- reading from a ogr dataset (most supported: shp, geojson, gml, etc)
else if (strcmp(argv[argNum], "--ogr") == 0) {
OGRRegisterAll();
OGRDataSource *dataSource = OGRSFDriverRegistrar::Open(argv[argNum+1], false);
++argNum;
if (dataSource == NULL) {
std::cerr << "Error: Could not open file." << std::endl;
return false;
}
OGRLayer *dataLayer = dataSource->GetLayer(0); //-- get first layer
dataLayer->ResetReading();
//-- Reads all features in this layer
OGRFeature *feature;
//-- get first feature
if (dataLayer->GetFeatureCount(true) > 1)
std::cout << "Reading only the first feature in the shapefile." << std::endl;
feature = dataLayer->GetNextFeature();
if (feature->GetGeometryRef()->getGeometryType() == wkbPolygon) {
geometry = static_cast<OGRPolygon *>(feature->GetGeometryRef());feature->GetGeometryRef();
}
else {
std::cout << "First feature ain't a POLYGON." << std::endl;
return(0);
}
}
else {
usage();
return(0);
}
}
if (!timeResults) startTime = 0;
PolygonRepair prepair;
//-- compute robustness
if (computeRobustness == true)
std::cout << "Robustness of input polygon: " << sqrt(prepair.computeRobustness(geometry)) <<std::endl;
OGRMultiPolygon *outPolygons;
if (pointSet) {
outPolygons = prepair.repairPointSet(geometry, startTime);
} else {
outPolygons = prepair.repairOddEven(geometry, startTime);
}
if (minArea > 0) {
prepair.removeSmallPolygons(outPolygons, minArea);
}
//-- output well known text
if (shpOut) {
prepair.saveToShp(outPolygons, "out.shp");
}
else {
char *outputWKT;
outPolygons->exportToWkt(&outputWKT);
std::cout << outputWKT << std::endl;
}
//-- compute robustness
if (computeRobustness == true)
std::cout << "Robustness of output polygon: " << sqrt(prepair.computeRobustness()) <<std::endl;
//-- time results
if (timeResults) {
time_t totalTime = time(NULL)-startTime;
std::cout << "Done! Process finished in " << totalTime/60 << " minutes " << totalTime%60 << " seconds." << std::endl;
}
return 0;
}