point_light.h

#ifndef __POINT_LIGHT_H__
#define __POINT_LIGHT_H__

#include "cuda_runtime_api.h"
#include "device_object.h"
#include <sutil/vec_math.h>
#include <vector_types.h>

class PointLight : public DeviceObject<PointLight>
//, public Light
{
  public:
    __host__ PointLight() = default;
    __host__ PointLight(float3 const &position, float3 const &lumi) : m_position(position), m_lumi(lumi) {}

    __host__ void set_position(float3 const &position) { m_position = position; }
    __host__ void set_lumi(float3 const &lumi) { m_lumi = lumi; }

    __host__ __device__ [[nodiscard]] float3 wi(float3 const &p, unsigned int & /*seed*/) const
    {
        return m_position - p;
    }

    __host__ __device__ [[nodiscard]] float3 lumi() const { return m_lumi; }

  private:
    float3 m_position = { 1.0f, 1.0f, 0.0f };
    float3 m_lumi     = { 1.0f, 1.0f, 1.0f };
    float3 m_dark     = { 0.0f, 0.0f, 0.0f };
};

#endif