// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright (c) 2002 Cynthia Brewer, Mark Harrower, and PSU
// SPDX-License-Identifier: BSD-3-Clause AND Apache-2.0 AND Apache-1.1

#include "vtkColorSeries.h"

#include "vtkLookupTable.h"
#include "vtkObjectFactory.h"

#include <sstream>
#include <vector>

//------------------------------------------------------------------------------
VTK_ABI_NAMESPACE_BEGIN
class vtkColorSeriesPalette
{
public:
  std::vector<vtkColor3ub> Colors;
  std::string Name;
};

//------------------------------------------------------------------------------
class vtkColorSeries::Private
{
public:
  Private();

  void SetScheme(int idx);
  int SetSchemeByName(const std::string& name, bool& modified);

  std::vector<vtkColorSeriesPalette> Palettes; // All palettes
  int Palette;                                 // Currently-selected entry in Palettes
  std::vector<vtkColor3ub>* Colors;            // Pointer to colors in current scheme
};

//------------------------------------------------------------------------------
inline vtkColor3ub vtkColor3ubFromHex3(vtkTypeUInt32 hex)
{
  int b = hex & 0xff;
  hex >>= 8;
  int g = hex & 0xff;
  hex >>= 8;
  int r = hex & 0xff;
  return vtkColor3ub(r, g, b);
}

//------------------------------------------------------------------------------
vtkColorSeries::Private::Private()
{
  this->Palettes.resize(vtkColorSeries::CUSTOM);
  // clang-format off
  vtkTypeUInt32 colors[] = {
    // Original vtkColorSeries palettes, not part of the Brewer schemes
    vtkColorSeries::SPECTRUM,
    0x000000, 0xE41A1C, 0x377EB8, 0x4DAF4A, 0x984EA3, 0xFF7F00, 0xA65628,
    vtkColorSeries::WARM,
    0x791717, 0xB50101, 0xEF4719, 0xF98324, 0xFFB400, 0xFFE506,
    vtkColorSeries::COOL,
    0x75B101, 0x588029, 0x50D7BF, 0x1C95CD, 0x3B68AB, 0x9A68FF, 0x5F3380,
    vtkColorSeries::BLUES,
    0x3B68AB, 0x1C95CD, 0x4ED9EA, 0x739AD5, 0x423DA9, 0x505487, 0x102A52,
    vtkColorSeries::WILD_FLOWER,
    0x1C95CD, 0x3B68AB, 0x663EB7, 0xA254CF, 0xDE61CE, 0xDC6195, 0x3D1052,
    vtkColorSeries::CITRUS,
    0x657C37, 0x75B101, 0xB2BA30, 0xFFE506, 0xFFB400, 0xF98324,

/*
The following palettes are colors from www.ColorBrewer2.org by
Cynthia A. Brewer, Geography, Pennsylvania State University.
Use the sentence above or the following bibliography entry to credit her:

+ Brewer, Cynthia A. and Mark Harrower and Andy Woodruff and David Heyman,
  2010. http://ColorBrewer2.org, accessed 2010-Nov-9.
*/
    // Diverging
    //   Purple-Orange
    vtkColorSeries::BREWER_DIVERGING_PURPLE_ORANGE_11,
    0x7F3B08, 0xB35806, 0xE08214, 0xFDB863, 0xFEE0B6, 0xF7F7F7, 0xD8DAEB, 0xB2ABD2, 0x8073AC, 0x542788, 0x2D004B,
    vtkColorSeries::BREWER_DIVERGING_PURPLE_ORANGE_10,
    0x7F3B08, 0xB35806, 0xE08214, 0xFDB863, 0xFEE0B6, 0xD8DAEB, 0xB2ABD2, 0x8073AC, 0x542788, 0x2D004B,
    vtkColorSeries::BREWER_DIVERGING_PURPLE_ORANGE_9,
    0xB35806, 0xE08214, 0xFDB863, 0xFEE0B6, 0xF7F7F7, 0xD8DAEB, 0xB2ABD2, 0x8073AC, 0x542788,
    vtkColorSeries::BREWER_DIVERGING_PURPLE_ORANGE_8,
    0xB35806, 0xE08214, 0xFDB863, 0xFEE0B6, 0xD8DAEB, 0xB2ABD2, 0x8073AC, 0x542788,
    vtkColorSeries::BREWER_DIVERGING_PURPLE_ORANGE_7,
    0xB35806, 0xF1A340, 0xFEE0B6, 0xF7F7F7, 0xD8DAEB, 0x998EC3, 0x542788,
    vtkColorSeries::BREWER_DIVERGING_PURPLE_ORANGE_6,
    0xB35806, 0xF1A340, 0xFEE0B6, 0xD8DAEB, 0x998EC3, 0x542788,
    vtkColorSeries::BREWER_DIVERGING_PURPLE_ORANGE_5,
    0xE66101, 0xFDB863, 0xF7F7F7, 0xB2ABD2, 0x5E3C99,
    vtkColorSeries::BREWER_DIVERGING_PURPLE_ORANGE_4,
    0xE66101, 0xFDB863, 0xB2ABD2, 0x5E3C99,
    vtkColorSeries::BREWER_DIVERGING_PURPLE_ORANGE_3,
    0xF1A340, 0xF7F7F7, 0x998EC3,
    //   Spectral
    vtkColorSeries::BREWER_DIVERGING_SPECTRAL_11,
    0x9E0142, 0xD53E4F, 0xF46D43, 0xFDAE61, 0xFEE08B, 0xFFFFBF, 0xE6F598, 0xABDDA4, 0x66C2A5, 0x3288BD, 0x5E4FA2,
    vtkColorSeries::BREWER_DIVERGING_SPECTRAL_10,
    0x9E0142, 0xD53E4F, 0xF46D43, 0xFDAE61, 0xFEE08B, 0xE6F598, 0xABDDA4, 0x66C2A5, 0x3288BD, 0x5E4FA2,
    vtkColorSeries::BREWER_DIVERGING_SPECTRAL_9,
    0xD53E4F, 0xF46D43, 0xFDAE61, 0xFEE08B, 0xFFFFBF, 0xE6F598, 0xABDDA4, 0x66C2A5, 0x3288BD,
    vtkColorSeries::BREWER_DIVERGING_SPECTRAL_8,
    0xD53E4F, 0xF46D43, 0xFDAE61, 0xFEE08B, 0xE6F598, 0xABDDA4, 0x66C2A5, 0x3288BD,
    vtkColorSeries::BREWER_DIVERGING_SPECTRAL_7,
    0xD53E4F, 0xFC8D59, 0xFEE08B, 0xFFFFBF, 0xE6F598, 0x99D594, 0x3288BD,
    vtkColorSeries::BREWER_DIVERGING_SPECTRAL_6,
    0xD53E4F, 0xFC8D59, 0xFEE08B, 0xE6F598, 0x99D594, 0x3288BD,
    vtkColorSeries::BREWER_DIVERGING_SPECTRAL_5,
    0xD7191C, 0xFDAE61, 0xFFFFBF, 0xABDDA4, 0x2B83BA,
    vtkColorSeries::BREWER_DIVERGING_SPECTRAL_4,
    0xD7191C, 0xFDAE61, 0xABDDA4, 0x2B83BA,
    vtkColorSeries::BREWER_DIVERGING_SPECTRAL_3,
    0xFC8D59, 0xFFFFBF, 0x99D594,
    //   Brown-Blue-Green
    vtkColorSeries::BREWER_DIVERGING_BROWN_BLUE_GREEN_11,
    0x543005, 0x8C510A, 0xBF812D, 0xDFC27D, 0xF6E8C3, 0xF5F5F5, 0xC7EAE5, 0x80CDC1, 0x35978F, 0x01665E, 0x003C30,
    vtkColorSeries::BREWER_DIVERGING_BROWN_BLUE_GREEN_10,
    0x543005, 0x8C510A, 0xBF812D, 0xDFC27D, 0xF6E8C3, 0xC7EAE5, 0x80CDC1, 0x35978F, 0x01665E, 0x003C30,
    vtkColorSeries::BREWER_DIVERGING_BROWN_BLUE_GREEN_9,
    0x8C510A, 0xBF812D, 0xDFC27D, 0xF6E8C3, 0xF5F5F5, 0xC7EAE5, 0x80CDC1, 0x35978F, 0x01665E,
    vtkColorSeries::BREWER_DIVERGING_BROWN_BLUE_GREEN_8,
    0x8C510A, 0xBF812D, 0xDFC27D, 0xF6E8C3, 0xC7EAE5, 0x80CDC1, 0x35978F, 0x01665E,
    vtkColorSeries::BREWER_DIVERGING_BROWN_BLUE_GREEN_7,
    0x8C510A, 0xD8B365, 0xF6E8C3, 0xF5F5F5, 0xC7EAE5, 0x5AB4AC, 0x01665E,
    vtkColorSeries::BREWER_DIVERGING_BROWN_BLUE_GREEN_6,
    0x8C510A, 0xD8B365, 0xF6E8C3, 0xC7EAE5, 0x5AB4AC, 0x01665E,
    vtkColorSeries::BREWER_DIVERGING_BROWN_BLUE_GREEN_5,
    0xA6611A, 0xDFC27D, 0xF5F5F5, 0x80CDC1, 0x018571,
    vtkColorSeries::BREWER_DIVERGING_BROWN_BLUE_GREEN_4,
    0xA6611A, 0xDFC27D, 0x80CDC1, 0x018571,
    vtkColorSeries::BREWER_DIVERGING_BROWN_BLUE_GREEN_3,
    0xD8B365, 0xF5F5F5, 0x5AB4AC,
    // Sequential Palettes
    //   Blue-Green
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_GREEN_9,
    0xF7FCFD, 0xE5F5F9, 0xCCECE6, 0x99D8C9, 0x66C2A4, 0x41AE76, 0x238B45, 0x006D2C, 0x00441B,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_GREEN_8,
    0xF7FCFD, 0xE5F5F9, 0xCCECE6, 0x99D8C9, 0x66C2A4, 0x41AE76, 0x238B45, 0x005824,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_GREEN_7,
    0xEDF8FB, 0xCCECE6, 0xCCECE6, 0x66C2A4, 0x41AE76, 0x238B45, 0x005824,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_GREEN_6,
    0xEDF8FB, 0xCCECE6, 0x99D8C9, 0x66C2A4, 0x2CA25F, 0x006D2C,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_GREEN_5,
    0xEDF8FB, 0xB2E2E2, 0x66C2A4, 0x2CA25F, 0x006D2C,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_GREEN_4,
    0xEDF8FB, 0xB2E2E2, 0x66C2A4, 0x238B45,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_GREEN_3,
    0xE5F5F9, 0x99D8C9, 0x2CA25F,
    //   Yellow-Orange-Brown
    vtkColorSeries::BREWER_SEQUENTIAL_YELLOW_ORANGE_BROWN_9,
    0xFFFFE5, 0xFFF7BC, 0xFEE391, 0xFEC44F, 0xFE9929, 0xEC7014, 0xCC4C02, 0x993404, 0x662506,
    vtkColorSeries::BREWER_SEQUENTIAL_YELLOW_ORANGE_BROWN_8,
    0xFFFFE5, 0xFFF7BC, 0xFEE391, 0xFEC44F, 0xFE9929, 0xEC7014, 0xCC4C02, 0x8C2D04,
    vtkColorSeries::BREWER_SEQUENTIAL_YELLOW_ORANGE_BROWN_7,
    0xFFFFD4, 0xFEE391, 0xFEC44F, 0xFE9929, 0xEC7014, 0xCC4C02, 0x8C2D04,
    vtkColorSeries::BREWER_SEQUENTIAL_YELLOW_ORANGE_BROWN_6,
    0xFFFFD4, 0xFEE391, 0xFEC44F, 0xFE9929, 0xD95F0E, 0x993404,
    vtkColorSeries::BREWER_SEQUENTIAL_YELLOW_ORANGE_BROWN_5,
    0xFFFFD4, 0xFED98E, 0xFE9929, 0xD95F0E, 0x993404,
    vtkColorSeries::BREWER_SEQUENTIAL_YELLOW_ORANGE_BROWN_4,
    0xFFFFD4, 0xFED98E, 0xFE9929, 0xCC4C02,
    vtkColorSeries::BREWER_SEQUENTIAL_YELLOW_ORANGE_BROWN_3,
    0xFFF7BC, 0xFEC44F, 0xD95F0E,
    //   Blue-Purple
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_PURPLE_9,
    0xF7FCFD, 0xE0ECF4, 0xBFD3E6, 0x9EBCDA, 0x8C96C6, 0x8C6BB1, 0x88419D, 0x810F7C, 0x4D004B,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_PURPLE_8,
    0xF7FCFD, 0xE0ECF4, 0xBFD3E6, 0x9EBCDA, 0x8C96C6, 0x8C6BB1, 0x88419D, 0x6E016B,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_PURPLE_7,
    0xEDF8FB, 0xBFD3E6, 0x9EBCDA, 0x8C96C6, 0x8C6BB1, 0x88419D, 0x6E016B,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_PURPLE_6,
    0xEDF8FB, 0xBFD3E6, 0x9EBCDA, 0x8C96C6, 0x8856A7, 0x810F7C,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_PURPLE_5,
    0xEDF8FB, 0xB3CDE3, 0x8C96C6, 0x8856A7, 0x810F7C,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_PURPLE_4,
    0xEDF8FB, 0xB3CDE3, 0x8C96C6, 0x88419D,
    vtkColorSeries::BREWER_SEQUENTIAL_BLUE_PURPLE_3,
    0xE0ECF4, 0x9EBCDA, 0x8856A7,
    // Qualitative Palettes
    //   Accent
    vtkColorSeries::BREWER_QUALITATIVE_ACCENT,
    0x7FC97F, 0xBEAED4, 0xFDC086, 0xFFFF99, 0x386CB0, 0xF0027F, 0xBF5B17, 0x666666,
    //   Dark2
    vtkColorSeries::BREWER_QUALITATIVE_DARK2,
    0x1B9E77, 0xD95F02, 0x7570B3, 0xE7298A, 0x66A61E, 0xE6AB02, 0xA6761D, 0x666666,
    //   Set2
    vtkColorSeries::BREWER_QUALITATIVE_SET2,
    0x66C2A5, 0xFC8D62, 0x8DA0CB, 0xE78AC3, 0xA6D854, 0xFFD92F, 0xE5C494, 0xB3B3B3,
    //   Pastel2
    vtkColorSeries::BREWER_QUALITATIVE_PASTEL2,
    0xB3E2CD, 0xFDCDAC, 0xCBD5E8, 0xF4CAE4, 0xE6F5C9, 0xFFF2AE, 0xF1E2CC, 0xCCCCCC,
    //   Pastel1
    vtkColorSeries::BREWER_QUALITATIVE_PASTEL1,
    0xFBB4AE, 0xB3CDE3, 0xCCEBC5, 0xDECBE4, 0xFED9A6, 0xFFFFCC, 0xE5D8BD, 0xFDDAEC, 0xF2F2F2,
    //   Set1
    vtkColorSeries::BREWER_QUALITATIVE_SET1,
    0xE41A1C, 0x377EB8, 0x4DAF4A, 0x984EA3, 0xFF7F00, 0xFFFF33, 0xA65628, 0xF781BF, 0x999999,
    //   Paired
    vtkColorSeries::BREWER_QUALITATIVE_PAIRED,
    0xA6CEE3, 0x1F78B4, 0xB2DF8A, 0x33A02C, 0xFB9A99, 0xE31A1C, 0xFDBF6F, 0xFF7F00, 0xCAB2D6, 0x6A3D9A, 0xFFFF99,
    //   Set3
    vtkColorSeries::BREWER_QUALITATIVE_SET3,
    0x8DD3C7, 0xFFFFB3, 0xBEBADA, 0xFB8072, 0x80B1D3, 0xFDB462, 0xB3DE69, 0xFCCDE5, 0xD9D9D9, 0xBC80BD, 0xCCEBC5, 0xFFED6F,
  };
  // clang-format on
  const char* names[] = {
    "Spectrum",
    "Warm",
    "Cool",
    "Blues",
    "Wild Flower",
    "Citrus",

    "Brewer Diverging Purple-Orange",
    "Brewer Diverging Spectral",
    "Brewer Diverging Brown-Blue-Green",

    "Brewer Sequential Blue-Green",
    "Brewer Sequential Yellow-Orange-Brown",
    "Brewer Sequential Blue-Purple",

    "Brewer Qualitative Accent",
    "Brewer Qualitative Dark2",
    "Brewer Qualitative Set2",
    "Brewer Qualitative Pastel2",
    "Brewer Qualitative Pastel1",
    "Brewer Qualitative Set1",
    "Brewer Qualitative Paired",
    "Brewer Qualitative Set3",
  };
  int sizes[][2] = {
    { 7, 7 },
    { 6, 6 },
    { 7, 7 },
    { 7, 7 },
    { 7, 7 },
    { 6, 6 },

    { 11, 3 },
    { 11, 3 },
    { 11, 3 },
    { 9, 3 },
    { 9, 3 },
    { 9, 3 },
    { 8, 8 },
    { 8, 8 },
    { 8, 8 },
    { 8, 8 },
    { 9, 9 },
    { 9, 9 },
    { 11, 11 },
    { 12, 12 },
  };
  vtkTypeUInt32* color = colors;
  vtkColorSeriesPalette* pal;
  for (unsigned i = 0; i < sizeof(names) / sizeof(names[0]); ++i)
  {
    int start = sizes[i][0];
    int stop = sizes[i][1];
    int step = start > stop ? -1 : 1;
    for (int n = start; n != stop + step; n += step)
    {
      int paletteIndex = *(color++);
      pal = &(this->Palettes[paletteIndex]);
      std::ostringstream os;
      os << names[i];
      if (start != stop)
      {
        os << " (" << n << ")";
      }
      pal->Name = os.str();
      for (int j = 0; j < n; ++j)
      {
        pal->Colors.push_back(vtkColor3ubFromHex3(*(color++)));
      }
    }
  }
  this->Colors = nullptr;
  this->Palette = vtkColorSeries::SPECTRUM;
  this->Colors = &(this->Palettes[this->Palette].Colors);
}

//------------------------------------------------------------------------------
void vtkColorSeries::Private::SetScheme(int idx)
{
  this->Colors = &(this->Palettes[idx].Colors);
  this->Palette = idx;
}

//------------------------------------------------------------------------------
int vtkColorSeries::Private::SetSchemeByName(const std::string& name, bool& modified)
{
  modified = false;
  int idx = 0;
  std::vector<vtkColorSeriesPalette>::iterator it;
  for (it = this->Palettes.begin(); it != this->Palettes.end(); ++it, ++idx)
  {
    if (it->Name == name)
    {
      this->SetScheme(idx);
      return idx;
    }
  }
  // OK, we could not find such a palette. Create one.
  modified = true;
  vtkColorSeriesPalette blank;
  blank.Name = name;
  idx = static_cast<int>(this->Palettes.size());
  this->Palettes.push_back(blank);
  this->SetScheme(idx);
  return idx;
}

//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
vtkStandardNewMacro(vtkColorSeries);

//------------------------------------------------------------------------------
vtkColorSeries::vtkColorSeries()
{
  this->Storage = new vtkColorSeries::Private;
  this->SetColorScheme(vtkColorSeries::SPECTRUM);
}

//------------------------------------------------------------------------------
vtkColorSeries::~vtkColorSeries()
{
  delete this->Storage;
  this->Storage = nullptr;
}

//------------------------------------------------------------------------------
void vtkColorSeries::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os, indent);
  int pidx = this->Storage->Palette;
  vtkColorSeriesPalette* palette = &(this->Storage->Palettes[pidx]);
  os << indent << "ColorScheme: " << pidx << endl
     << indent
     << "ColorSchemeName : " << (palette->Name.empty() ? "(empty)" : palette->Name.c_str()) << endl;
}

//------------------------------------------------------------------------------
void vtkColorSeries::SetColorScheme(int scheme)
{
  if (this->Storage->Palette == scheme)
  {
    return;
  }

  if (scheme < 0 || scheme >= this->GetNumberOfColorSchemes())
  {
    vtkWarningMacro(<< "Scheme " << scheme << " out of range. Ignoring.");
    return;
  }

  this->Storage->SetScheme(scheme);
  this->Modified();
}

//------------------------------------------------------------------------------
int vtkColorSeries::SetColorSchemeByName(const vtkStdString& schemeName)
{
  bool modified;
  int index = this->Storage->SetSchemeByName(schemeName, modified);
  if (modified)
  {
    this->Modified();
  }
  return index;
}

//------------------------------------------------------------------------------
int vtkColorSeries::GetNumberOfColorSchemes() const
{
  return static_cast<int>(this->Storage->Palettes.size());
}

//------------------------------------------------------------------------------
vtkStdString vtkColorSeries::GetColorSchemeName() const
{
  return this->Storage->Palettes[this->Storage->Palette].Name;
}

//------------------------------------------------------------------------------
void vtkColorSeries::SetColorSchemeName(const vtkStdString& name)
{
  // Ignore empty names
  // TODO: Should we prohibit duplicate names? If not,
  // how about searching backwards through palettes in
  // SetColorSchemeByName() so users can override
  // system defaults?
  if (name.empty())
  {
    return;
  }

  this->CopyOnWrite();
  if (this->Storage->Palettes[this->Storage->Palette].Name != name)
  {
    this->Storage->Palettes[this->Storage->Palette].Name = name;
    this->Modified();
  }
}

//------------------------------------------------------------------------------
int vtkColorSeries::GetColorScheme() const
{
  return this->Storage->Palette;
}

//------------------------------------------------------------------------------
int vtkColorSeries::GetNumberOfColors() const
{
  return static_cast<int>(this->Storage->Colors->size());
}

//------------------------------------------------------------------------------
void vtkColorSeries::SetNumberOfColors(int numColors)
{
  this->CopyOnWrite();
  this->Storage->Colors->resize(numColors);
}

//------------------------------------------------------------------------------
vtkColor3ub vtkColorSeries::GetColor(int index) const
{
  if (index >= 0 && index < static_cast<int>(this->Storage->Colors->size()))
  {
    return (*this->Storage->Colors)[index];
  }
  else
  {
    return vtkColor3ub(0, 0, 0);
  }
}

//------------------------------------------------------------------------------
vtkColor3ub vtkColorSeries::GetColorRepeating(int index) const
{
  vtkColor3ub color;
  int numColors = this->GetNumberOfColors();
  // If we have an empty palette, index % numColors generates a divide-by-zero
  // fault, and if it did return a valid value, looking up the resulting color
  // would be an access violation. So, be careful here:
  color = numColors ? (*this->Storage->Colors)[index % numColors] : vtkColor3ub(0, 0, 0);
  return color;
}

//------------------------------------------------------------------------------
void vtkColorSeries::SetColor(int index, const vtkColor3ub& color)
{
  if (index >= 0 && index < static_cast<int>(this->Storage->Colors->size()))
  {
    this->CopyOnWrite();
    (*this->Storage->Colors)[index] = color;
    this->Modified();
  }
}

//------------------------------------------------------------------------------
void vtkColorSeries::AddColor(const vtkColor3ub& color)
{
  this->CopyOnWrite();
  this->Storage->Colors->push_back(color);
  this->Modified();
}

//------------------------------------------------------------------------------
void vtkColorSeries::InsertColor(int index, const vtkColor3ub& color)
{
  if (index >= 0 && index < static_cast<int>(this->Storage->Colors->size()))
  {
    this->CopyOnWrite();
    this->Storage->Colors->insert(this->Storage->Colors->begin() + index, color);
    this->Modified();
  }
}

//------------------------------------------------------------------------------
void vtkColorSeries::RemoveColor(int index)
{
  if (index >= 0 && index < static_cast<int>(this->Storage->Colors->size()))
  {
    this->CopyOnWrite();
    this->Storage->Colors->erase(this->Storage->Colors->begin() + index);
    this->Modified();
  }
}

//------------------------------------------------------------------------------
void vtkColorSeries::ClearColors()
{
  this->CopyOnWrite();
  this->Storage->Colors->clear();
  this->Modified();
}

//------------------------------------------------------------------------------
void vtkColorSeries::DeepCopy(vtkColorSeries* colors)
{
  if (!colors)
  {
    return;
  }

  this->Storage->Palettes = colors->Storage->Palettes;
  this->Storage->Palette = colors->Storage->Palette;
  this->Storage->Colors = &(this->Storage->Palettes[this->Storage->Palette].Colors);
  this->Modified();
}

//------------------------------------------------------------------------------
void vtkColorSeries::BuildLookupTable(vtkLookupTable* lkup, int lutIndexing)
{
  if (lkup)
  {
    lkup->SetNumberOfTableValues(this->GetNumberOfColors());
    lkup->SetIndexedLookup((lutIndexing == ORDINAL) ? 0 : 1);
    for (int i = 0; i < this->GetNumberOfColors(); ++i)
    {
      vtkColor3ub colr = this->GetColor(i);
      lkup->SetTableValue(
        i, colr.GetRed() / 255., colr.GetGreen() / 255., colr.GetBlue() / 255., 1.);
    }
  }
}

//------------------------------------------------------------------------------
vtkLookupTable* vtkColorSeries::CreateLookupTable(int lutIndexing)
{
  vtkLookupTable* lkup = vtkLookupTable::New();
  this->BuildLookupTable(lkup, lutIndexing);
  return lkup;
}

//------------------------------------------------------------------------------
void vtkColorSeries::CopyOnWrite()
{
  // If the current scheme is predefined, copy it to a new, custom scheme.
  int prevScheme = this->Storage->Palette;
  if (prevScheme < CUSTOM)
  {
    int nextScheme = static_cast<int>(this->Storage->Palettes.size());
    vtkColorSeriesPalette blank;
    blank.Name = this->Storage->Palettes[prevScheme].Name + " copy";
    this->Storage->Palettes.push_back(blank);
    this->Storage->SetScheme(nextScheme);
    *this->Storage->Colors = this->Storage->Palettes[prevScheme].Colors;
    this->Modified();
  }
}
VTK_ABI_NAMESPACE_END