gpuBasis.h

//
// Author: Bryan V. Riel
// Copyright 2017-2018
//

#pragma once

// isce3::core
#include <isce3/core/Basis.h>

// isce3::cuda::core
#include <isce3/cuda/core/Common.h>

class isce3::cuda::core::gpuBasis {

    public:
        CUDA_HOSTDEV inline gpuBasis() {
            for (int i = 0; i < 3; ++i) {
                x0[i] = 0.0;
                x1[i] = 0.0;
                x2[i] = 0.0;
            }
        }

        CUDA_HOSTDEV inline gpuBasis(double * x0, double * x1, double * x2) {
            for (int i = 0; i < 3; ++i) {
                this->x0[i] = x0[i];
                this->x1[i] = x1[i];
                this->x2[i] = x2[i];
            }
        }

        CUDA_HOST inline gpuBasis(const isce3::core::Basis & basis) {
            for (int i = 0; i < 3; ++i) {
                x0[i] = basis.x0()[i];
                x1[i] = basis.x1()[i];
                x2[i] = basis.x2()[i];
            }
        }

        CUDA_DEV inline void combine(double * vec, double * res) {
            for (int ii = 0; ii < 3; ++ii) {
                res[ii] = vec[0] * x0[ii] + vec[1] * x1[ii] + vec[2] * x2[ii];
            }
        };

        // Make data public to simplify access and to reduce use of temp variables
        // in device code
        double x0[3];
        double x1[3];
        double x2[3];
};