point.cpp

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#include "point.h"
#include "runtime.h"
#include "image-dialog.h"

class PointPicker: public ImagePicker
{
    PointValue point;
  public:
    PointPicker(ImageValue * I): ImagePicker(I) {};
    virtual Value * value() {return new PointValue(point);};
    virtual void nextPoint(PointValue point, bool right);
};

QString PointValue::toString()
{
  return QString("(")+QString::number(x)+
    QString(", ")+QString::number(y)+
    QString(")");
}

bool PointValue::equals_same_type(Value * other) 
{
  PointValue * o = (PointValue*)other;
  return x==o->x && y==o->y;
}

Value * Runtime::select(Value * image)
{
  if (image==NULL)  return NULL;
  if (typeid(*image)!=typeid(ImageValue)) return NULL;
  ImageValue * I = (ImageValue*)image;
  PointPicker ip(I);
  if (ip.exec()==QDialog::Accepted)
    return ip.value();
  return NULL;
}

Value * Runtime::select(vector<Value*> v)
{
  if (v.size()==1) return select(v[0]);
  return NULL;
}

PointValue PointValue::operator *(const PointValue& other) const
{
  PointValue result;
  result.x = x*other.x;
  result.y = y*other.y;
  return result;
}

PointValue max(const PointValue &a, const PointValue &b)
{
  PointValue result;
  result.x=max(a.x,b.x);
  result.y=max(a.y,b.y);
  return result;
}

PointValue min(const PointValue &a, const PointValue &b)
{
  PointValue result;
  result.x=min(a.x,b.x);
  result.y=min(a.y,b.y);
  return result;
}

void PointPicker::nextPoint(PointValue p, bool)
{
  point=p;
  accept();
}

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