GeoTransform.h

#pragma once

#include <array>

namespace isce3 { namespace io { namespace gdal {

struct GeoTransform {

    GeoTransform() = default;

    GeoTransform(double x0, double y0, double dx, double dy) : x0(x0), y0(y0), dx(dx), dy(dy) {}

    GeoTransform(const std::array<double, 6> & coeffs);

    std::array<double, 6> getCoeffs() const;

    double transformX(int pixel) const { return x0 + (pixel + 0.5) * dx; }

    double transformY(int line) const { return y0 + (line + 0.5) * dy; }

    bool isIdentity() const { return x0 == 0. && y0 == 0. && dx == 1. && dy == 1.; }

    double x0 = 0.;
    double y0 = 0.;
    double dx = 1.;
    double dy = 1.;
};

bool operator==(const GeoTransform &, const GeoTransform &);
bool operator!=(const GeoTransform &, const GeoTransform &);

}}}