Contours.cc

#include "Contours.h"
#include "OpenCV.h"
#include <nan.h>

#include <iostream>

Nan::Persistent<FunctionTemplate> Contour::constructor;

void Contour::Init(Local<Object> target) {
  Nan::HandleScope scope;

  // Class/contructor
  Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(Contour::New);
  constructor.Reset(ctor);
  ctor->InstanceTemplate()->SetInternalFieldCount(1);
  ctor->SetClassName(Nan::New("Contours").ToLocalChecked());

  // Prototype
  // Local<ObjectTemplate> proto = constructor->PrototypeTemplate();
  Nan::SetPrototypeMethod(ctor, "point", Point);
  Nan::SetPrototypeMethod(ctor, "points", Points);
  Nan::SetPrototypeMethod(ctor, "size", Size);
  Nan::SetPrototypeMethod(ctor, "cornerCount", CornerCount);
  Nan::SetPrototypeMethod(ctor, "area", Area);
  Nan::SetPrototypeMethod(ctor, "arcLength", ArcLength);
  Nan::SetPrototypeMethod(ctor, "approxPolyDP", ApproxPolyDP);
  Nan::SetPrototypeMethod(ctor, "convexHull", ConvexHull);
  Nan::SetPrototypeMethod(ctor, "boundingRect", BoundingRect);
  Nan::SetPrototypeMethod(ctor, "minAreaRect", MinAreaRect);
  Nan::SetPrototypeMethod(ctor, "fitEllipse", FitEllipse);
  Nan::SetPrototypeMethod(ctor, "isConvex", IsConvex);
  Nan::SetPrototypeMethod(ctor, "moments", Moments);
  Nan::SetPrototypeMethod(ctor, "hierarchy", Hierarchy);
  Nan::SetPrototypeMethod(ctor, "serialize", Serialize);
  Nan::SetPrototypeMethod(ctor, "deserialize", Deserialize);
  target->Set(Nan::GetCurrentContext(), Nan::New("Contours").ToLocalChecked(), ctor->GetFunction( Nan::GetCurrentContext() ).ToLocalChecked());
};

NAN_METHOD(Contour::New) {
  Nan::HandleScope scope;

  if (info.This()->InternalFieldCount() == 0) {
    Nan::ThrowTypeError("Cannot instantiate without new");
  }

  Contour *contours;
  contours = new Contour;

  contours->Wrap(info.Holder());
  info.GetReturnValue().Set(info.Holder());
}

Contour::Contour() :
    Nan::ObjectWrap() {
}

NAN_METHOD(Contour::Point) {
  Nan::HandleScope scope;

  Contour *self = Nan::ObjectWrap::Unwrap<Contour>(info.This());
  int pos = info[0].As<Number>()->Value();
  int index = info[1].As<Number>()->Value();

  cv::Point point = self->contours[pos][index];

  Local<Object> data = Nan::New<Object>();
  data->Set(Nan::GetCurrentContext(), Nan::New("x").ToLocalChecked(), Nan::New<Number>(point.x));
  data->Set(Nan::GetCurrentContext(), Nan::New("y").ToLocalChecked(), Nan::New<Number>(point.y));

  info.GetReturnValue().Set(data);