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executable file 73 lines (57 sloc) 1.98 KB
#include "Point.h"
#include "OpenCV.h"
Nan::Persistent<FunctionTemplate> Point::constructor;
void Point::Init(Local<Object> target) {
Nan::HandleScope scope;
// Constructor
Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(Point::New);
constructor.Reset(ctor);
ctor->InstanceTemplate()->SetInternalFieldCount(1);
ctor->SetClassName(Nan::New("Point").ToLocalChecked());
// Prototype
Local<ObjectTemplate> proto = ctor->PrototypeTemplate();
Nan::SetAccessor(proto, Nan::New("x").ToLocalChecked(), GetX, RaiseImmutable);
Nan::SetAccessor(proto, Nan::New("y").ToLocalChecked(), GetY, RaiseImmutable);
Nan::SetPrototypeMethod(ctor, "dot", Dot);
target->Set(Nan::New("Point").ToLocalChecked(), ctor->GetFunction());
};
NAN_METHOD(Point::New) {
Nan::HandleScope scope;
if (info.This()->InternalFieldCount() == 0) {
return Nan::ThrowTypeError("Cannot Instantiate without new");
}
double x = 0, y = 0;
if (info[0]->IsNumber()) {
x = info[0]->NumberValue();
}
if (info[1]->IsNumber()) {
y = info[1]->NumberValue();
}
Point *pt = new Point(x, y);
pt->Wrap(info.This());
info.GetReturnValue().Set(info.This());
}
NAN_GETTER(Point::GetX) {
Nan::HandleScope scope;
Point *pt = Nan::ObjectWrap::Unwrap<Point>(info.This());
info.GetReturnValue().Set(Nan::New<Number>(pt->point.x));
}
NAN_GETTER(Point::GetY) {
Nan::HandleScope scope;
Point *pt = Nan::ObjectWrap::Unwrap<Point>(info.This());
info.GetReturnValue().Set(Nan::New<Number>(pt->point.y));
}
NAN_SETTER(Point::RaiseImmutable) {
Nan::ThrowTypeError("Point is immutable");
}
NAN_METHOD(Point::Dot) {
Nan::HandleScope scope;
Point *p1 = Nan::ObjectWrap::Unwrap<Point>(info.This());
Point *p2 = Nan::ObjectWrap::Unwrap<Point>(info[0]->ToObject());
// Since V 2.3 Native Dot no longer supported
info.GetReturnValue().Set(Nan::New<Number>(p1->point.x * p2->point.x + p1->point.y * p2->point.y));
}
Point::Point(double x, double y) :
Nan::ObjectWrap() {
point = cvPoint2D32f(x, y);
}