template<> NValue NValue::callUnary<FUNC_VOLT_POINTFROMTEXT>() const
{
if (isNull()) {
return NValue::getNullValue(VALUE_TYPE_POINT);
}
int32_t textLength;
const char* textData = getObject_withoutNull(&textLength);
std::string wkt(textData, textLength);
// Discard whitespace, but return commas or parentheses as tokens
Tokenizer tokens(wkt, boost::char_separator<char>(" \f\n\r\t\v", ",()"));
Tokenizer::iterator it = tokens.begin();
Tokenizer::iterator end = tokens.end();
if (! boost::iequals(*it, "point")) {
throwInvalidWktPoint(wkt);
}
++it;
if (! boost::iequals(*it, "(")) {
throwInvalidWktPoint(wkt);
}
++it;
GeographyPointValue::Coord lng = stringToCoord(POINT, wkt, *it);
++it;
GeographyPointValue::Coord lat = stringToCoord(POINT, wkt, *it);
++it;
if ( lng < -180.0 || lng > 180.0) {
throwInvalidPointLongitude(wkt);
}
if (lat < -90.0 || lat > 90.0 ) {
throwInvalidPointLatitude(wkt);
}
if (! boost::iequals(*it, ")")) {
throwInvalidWktPoint(wkt);
}
++it;
if (it != end) {
throwInvalidWktPoint(wkt);
}
NValue returnValue(VALUE_TYPE_POINT);
returnValue.getGeographyPointValue() = GeographyPointValue(lng, lat);
return returnValue;
}
// QC:G
GraphicalEffects Factory::loadEffects(TiXmlElement *xmlData) {
GraphicalEffects effects;
const char* aVal;
bool b;
int i;
coord c;
Rect r;
Point p;
if((aVal=xmlData->Attribute("effects"))) {
effects.setEffects(aVal);
}
if(stringToPoint(xmlData->Attribute("scale"), p))
effects.setScale(p);
if(stringToPoint(xmlData->Attribute("sectionPointStart"), p))
effects.setSectionPointStart(p);
if(stringToPoint(xmlData->Attribute("sectionWidthHeight"), p))
effects.setSectionWidthHeight(p);
if(stringToRect(xmlData->Attribute("section"), r))
effects.setSection(r);
if(stringToCoord(xmlData->Attribute("rotation"), &c))
effects.setRotation(c);
if(stringToInt(xmlData->Attribute("opacity"), &i))
effects.setOpacity(i);
if(stringToInt(xmlData->Attribute("redFilter"), &i))
effects.setIntegerEffect("RFIL", i);
if(stringToInt(xmlData->Attribute("greenFilter"), &i))
effects.setIntegerEffect("GFIL", i);
if(stringToInt(xmlData->Attribute("blueFilter"), &i))
effects.setIntegerEffect("BFIL", i);
effects.setBlendMode(xmlData->Attribute("blend"));
if(stringToBool(xmlData->Attribute("renderCache"), &b))
effects.setRenderCache(b);
if((aVal=xmlData->Attribute("preProcess"))) {
effects.setPreProcess(aVal, NULL);
}
if((aVal=xmlData->Attribute("postProcess"))) {
effects.setPostProcess(aVal, NULL);
}
return effects;
}
static void readLoop(bool is_shell,
const std::string &wkt,
Tokenizer::iterator &it,
const Tokenizer::iterator &end,
S2Loop *loop)
{
if (! boost::iequals(*it, "(")) {
throwInvalidWktPoly("expected left parenthesis to start a loop");
}
++it;
std::vector<S2Point> points;
while (it != end && *it != ")") {
GeographyPointValue::Coord lng = stringToCoord(POLY, wkt, *it);
if (lng < -180 || lng > 180) {
throwInvalidPolygonLongitude(*it);
}
++it;
GeographyPointValue::Coord lat = stringToCoord(POLY, wkt, *it);
if (lat < -90 || lat > 90) {
throwInvalidPolygonLatitude(*it);
}
++it;
// Note: This is S2. It takes latitude, longitude, not
// longitude, latitude.
points.push_back(S2LatLng::FromDegrees(lat, lng).ToPoint());
if (*it == ",") {
++it;
// continue to next lat long pair
}
else if (*it != ")") {
throwInvalidWktPoly("unexpected token: '" + (*it) + "'");
}
}
if (it == end) {
// we hit the end of input before the closing parenthesis
throwInvalidWktPoly("unexpected end of input");
}
assert (*it == ")");
// Advance iterator to next token
++it;
if (points.size() < 4) {
throwInvalidWktPoly("A polygon ring must contain at least 4 points (including repeated closing vertex)");
}
const S2Point& first = points.at(0);
const S2Point& last = points.at(points.size() - 1);
if (first != last) {
throwInvalidWktPoly("A polygon ring's first vertex must be equal to its last vertex");
}
// S2 format considers the closing vertex in a loop to be
// implicit, while in WKT it is explicit. Remove the closing
// vertex here to reflect this.
points.pop_back();
// The first is a shell. All others are holes. We need to reverse
// the order of the vertices for holes.
if (!is_shell) {
// Don't touch the first point. We don't want to
// cycle the vertices.
std::reverse(++(points.begin()), points.end());
}
loop->Init(points);
}
