profiles.hpp

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/* Copyright (c) 2023 Otto Link. Distributed under the terms of the GNU General
   Public License. The full license is in the file LICENSE, distributed with
   this software. */
 
#pragma once
#include <functional>
 
namespace hmap
{
 
enum ErosionProfile : int
{
  EP_COSINE,
  EP_COSINE_BULK,
  EP_COSINE_PEAK,
  EP_PARABOL,
  EP_SAW_SHARP,
  EP_SAW_SMOOTH,
  EP_SHARP_VALLEYS,
  EP_SQRT,
  EP_TRIANGLE_GRENIER,
  EP_TRIANGLE_SHARP,
  EP_TRIANGLE_SMOOTH,
};
 
enum PhasorProfile : int
{
  PP_COSINE_BULKY,
  PP_COSINE_PEAKY,
  PP_COSINE_SQUARE,
  PP_COSINE_STD,
  PP_TRIANGLE,
  PP_DUNE,
};
 
enum RadialProfile : int
{
  RP_GAIN,
  RP_LINEAR,
  RP_POW,
  RP_SMOOTHSTEP,
  RP_SMOOTHSTEP_UPPER,
  RP_FLAT_BOTTOM,
  RP_SQRT
};
 
std::function<float(float)> get_erosion_profile_function(
    const ErosionProfile &erosion_profile,
    float                 delta,
    float                &profile_avg);
 
std::function<float(float)> get_phasor_profile_function(
    PhasorProfile phasor_profile,
    float         delta,
    float        *p_profile_avg = nullptr);
 
std::function<float(float)> get_radial_profile_function(
    RadialProfile radial_profile,
    float         delta);
 
} // namespace hmap