Handle<Value> Geometry::exportToWKB(const Arguments& args)
{
HandleScope scope;
Geometry *geom = ObjectWrap::Unwrap<Geometry>(args.This());
int size = geom->this_->WkbSize();
unsigned char *data = (unsigned char*) malloc(size);
//byte order
OGRwkbByteOrder byte_order;
std::string order = "MSB";
NODE_ARG_OPT_STR(0, "byte order", order);
if (order == "MSB") {
byte_order = wkbXDR;
} else if (order == "LSB") {
byte_order = wkbNDR;
} else {
return NODE_THROW("byte order must be 'MSB' or 'LSB'");
}
#if GDAL_VERSION_NUM > 1100000
//wkb variant
OGRwkbVariant wkb_variant;
std::string variant = "OGC";
NODE_ARG_OPT_STR(1, "wkb variant", variant);
if (variant == "OGC") {
wkb_variant = wkbVariantOgc;
} else if (order == "ISO") {
wkb_variant = wkbVariantIso;
} else {
return NODE_THROW("byte order must be 'OGC' or 'ISO'");
}
OGRErr err = geom->this_->exportToWkb(byte_order, data, wkb_variant);
#else
OGRErr err = geom->this_->exportToWkb(byte_order, data);
#endif
//^^ export to wkb and fill buffer ^^
//TODO: avoid extra memcpy in FastBuffer::New and have exportToWkb write directly into buffer
if (err) {
free(data);
return NODE_THROW_OGRERR(err);
}
Handle<Value> result = FastBuffer::New(data, size);
free(data);
return scope.Close(result);
}
Handle<Value> Dataset::setGCPs(const Arguments& args)
{
Dataset *ds = ObjectWrap::Unwrap<Dataset>(args.This());
if(!ds->this_) return NODE_THROW("Dataset object has already been destroyed");
Handle<Array> gcps;
std::string projection("");
NODE_ARG_ARRAY(0, "gcps", gcps);
NODE_ARG_OPT_STR(1, "projection", projection);
GDAL_GCP* list = new GDAL_GCP [gcps->Length()];
GDAL_GCP* gcp = list;
for (unsigned int i = 0; i < gcps->Length(); ++i) {
Local<Value> val = gcps->Get(i);
if (!val->IsObject()) {
return NODE_THROW("list of GCPs must only contain objects");
}
Local<Object> obj = val->ToObject();
NODE_STR_FROM_OBJ_OPT(obj, "pszId", gcp->pszId);
NODE_STR_FROM_OBJ_OPT(obj, "pszInfo", gcp->pszInfo);
NODE_DOUBLE_FROM_OBJ(obj, "dfGCPPixel", gcp->dfGCPPixel);
NODE_DOUBLE_FROM_OBJ(obj, "dfGCPLine", gcp->dfGCPLine);
NODE_DOUBLE_FROM_OBJ(obj, "dfGCPX", gcp->dfGCPX);
NODE_DOUBLE_FROM_OBJ(obj, "dfGCPY", gcp->dfGCPY);
NODE_DOUBLE_FROM_OBJ_OPT(obj, "dfGCPZ", gcp->dfGCPZ);
gcp++;
}
if (list) delete [] list;
CPLErr err = ds->this_->SetGCPs(gcps->Length(), list, projection.c_str());
if(err) return NODE_THROW_CPLERR(err);
return Undefined();
}
