#include "blend.h"

// TPoint structure

#include "tgeometry.h"

// Palette - pixel functions

#include "tpalette.h"

#include "tpixelutils.h"

#include <vector></vector>

#include <memory></memory>

//=================================================================================

//===========================

//    Blur pattern class

//---------------------------

//! The BlurPattern class delineates the idea of a 'blur'

//! pattern from a number of random sample points taken

//! in a neighbourhood of the blurred pixel. The pattern

//! develops in a radial manner if specified, so that possible

//! 'obstacles' in the blur can be identified.

class BlurPattern {

public:

  typedef std::vector<tpoint> SamplePath;</tpoint>

  std::vector<tpoint> m_samples;</tpoint>

  std::vector<samplepath> m_samplePaths;</samplepath>

  BlurPattern(double distance, unsigned int samplesCount, bool radial);

  ~BlurPattern() {}

};

//---------------------------------------------------------------------------------

// Builds the specified number of samples count, inside the specified distance

// from the origin. If the pattern is radial, paths to the samples points are

// calculated.

BlurPattern::BlurPattern(double distance, unsigned int samplesCount,

                         bool radial) {

  const double randFactor = 2.0 * distance / RAND_MAX;

  m_samples.resize(samplesCount);

  // Build the samples

  unsigned int i;

  for (i = 0; i < samplesCount; ++i) {

    // NOTE: The following method ensures a perfectly flat probability

    // distribution.

    TPoint candidatePoint(tround(rand() * randFactor - distance),

                          tround(rand() * randFactor - distance));

    double distanceSq = sq(distance);

    while (sq(candidatePoint.x) + sq(candidatePoint.y) > distanceSq)

      candidatePoint = TPoint(tround(rand() * randFactor - distance),

                              tround(rand() * randFactor - distance));

    m_samples[i] = candidatePoint;

  }

  m_samplePaths.resize(samplesCount);

  // If necessary, build the paths

  if (radial) {

    for (i = 0; i < samplesCount; ++i) {

      TPoint &sample = m_samples[i];

      int l = std::max(abs(sample.x), abs(sample.y));

      m_samplePaths[i].reserve(l);

      double dx = sample.x / (double)l;

      double dy = sample.y / (double)l;

      double x, y;

      int j;

      for (j = 0, x = dx, y = dy; j < l; x += dx, y += dy, ++j)

        m_samplePaths[i].push_back(TPoint(tround(x), tround(y)));

    }

  }

}

//=================================================================================

//=================================

//    Raster Selection classes

//---------------------------------

struct SelectionData {

  UCHAR m_selectedInk : 1;

  UCHAR m_selectedPaint : 1;

  UCHAR m_pureInk : 1;

  UCHAR m_purePaint : 1;

};

//=================================================================================

// Implements an array of selection infos using bitfields. It seems that

// bitfields are more optimized than

// using raw bits and bitwise operators, and use just the double of the space

// required with bit arrays.

class SelectionArrayPtr {

  std::unique_ptr<selectiondata[]> m_buffer;</selectiondata[]>

public:

  inline void allocate(unsigned int count) {

    m_buffer.reset(new SelectionData[count]);

    memset(m_buffer.get(), 0, count * sizeof(SelectionData));

  }

  inline void destroy() { m_buffer.reset(); }

  inline SelectionData *data() const { return m_buffer.get(); }

  inline SelectionData *data() { return m_buffer.get(); }

};

//=================================================================================

// Bitmap used to store blend color selections and pure color informations.

class SelectionRaster {

  SelectionArrayPtr m_selection;

  int m_wrap;

public:

  SelectionRaster(TRasterCM32P cm);

  void updateSelection(TRasterCM32P cm, const BlendParam ¶m);

  SelectionData *data() const { return m_selection.data(); }

  SelectionData *data() { return m_selection.data(); }

  void destroy() { m_selection.destroy(); }

  bool isSelectedInk(int xy) const {

    return (m_selection.data() + xy)->m_selectedInk;

  }

  bool isSelectedInk(int x, int y) const {

    return isSelectedInk(x + y * m_wrap);

  }

  bool isSelectedPaint(int xy) const {

    return (m_selection.data() + xy)->m_selectedPaint;

  }

  bool isSelectedPaint(int x, int y) const {

    return isSelectedPaint(x + y * m_wrap);

  }

  bool isPureInk(int xy) const { return (m_selection.data() + xy)->m_pureInk; }

  bool isPureInk(int x, int y) const { return isPureInk(x + y * m_wrap); }

  bool isPurePaint(int xy) const {

    return (m_selection.data() + xy)->m_purePaint;

  }

  bool isPurePaint(int x, int y) const { return isPurePaint(x + y * m_wrap); }

  bool isToneColor(int xy) const { return !(isPureInk(xy) || isPurePaint(xy)); }

  bool isToneColor(int x, int y) const { return isToneColor(x + y * m_wrap); }

};

//---------------------------------------------------------------------------------

inline UCHAR linearSearch(const int *v, unsigned int vSize, int k) {

  const int *vEnd = v + vSize;

  for (; v < vEnd; ++v)

    if (*v == k) return 1;

  return 0;

}

//---------------------------------------------------------------------------------

// I've seen the std::binary_search go particularly slow... perhaps it was the

// debug mode,

// but I guess this is the fastest version possible.

inline UCHAR binarySearch(const int *v, unsigned int vSize, int k) {

  // NOTE: v.size() > 0 due to external restrictions. See SelectionRaster's

  // constructor.

  int a = -1, b, c = vSize;

  for (b = c >> 1; b != a; b = (a + c) >> 1) {

    if (v[b] == k)

      return 1;

    else if (k < v[b])

      c = b;

    else

      a = b;

  }

  return 0;

}

//---------------------------------------------------------------------------------

SelectionRaster::SelectionRaster(TRasterCM32P cm) {

  unsigned int lx = cm->getLx(), ly = cm->getLy(), wrap = cm->getWrap();

  unsigned int size = lx * ly;

  m_wrap = lx;

  m_selection.allocate(size);

  cm->lock();

  TPixelCM32 *pix, *pixBegin = (TPixelCM32 *)cm->getRawData();

  SelectionData *selData = data();

  unsigned int i, j;

  for (i = 0; i < ly; ++i) {

    pix = pixBegin + i * wrap;

    for (j = 0; j < lx; ++j, ++pix, ++selData) {

      selData->m_pureInk   = pix->getTone() == 0;

      selData->m_purePaint = pix->getTone() == 255;

    }

  }

  cm->unlock();

}

//---------------------------------------------------------------------------------

void SelectionRaster::updateSelection(TRasterCM32P cm,

                                      const BlendParam ¶m) {

  // Make a hard copy of color indexes. We do so since we absolutely prefer

  // having them SORTED!

  std::vector<int> cIndexes = param.colorsIndexes;</int>

  std::sort(cIndexes.begin(), cIndexes.end());

  unsigned int lx = cm->getLx(), ly = cm->getLy(), wrap = cm->getWrap();

  // Scan each cm pixel, looking if its ink or paint is in param's colorIndexes.

  cm->lock();

  TPixelCM32 *pix, *pixBegin = (TPixelCM32 *)cm->getRawData();

  SelectionData *selData = data();

  const int *v =

      &cIndexes[0];  // NOTE: cIndexes.size() > 0 due to external check.

  unsigned int vSize = cIndexes.size();

  unsigned int i, j;

  // NOTE: It seems that linear searches are definitely best for small color

  // indexes.

  if (vSize > 50) {

    for (i = 0; i < ly; ++i) {

      pix = pixBegin + i * wrap;

      for (j = 0; j < lx; ++j, ++pix, ++selData) {

        selData->m_selectedInk   = binarySearch(v, vSize, pix->getInk());

        selData->m_selectedPaint = binarySearch(v, vSize, pix->getPaint());

      }

    }

  } else {

    for (i = 0; i < ly; ++i) {

      pix = pixBegin + i * wrap;

      for (j = 0; j < lx; ++j, ++pix, ++selData) {

        selData->m_selectedInk   = linearSearch(v, vSize, pix->getInk());

        selData->m_selectedPaint = linearSearch(v, vSize, pix->getPaint());

      }

    }

  }

  cm->unlock();

}

//=================================================================================

//========================

//    Blend functions

//------------------------

// Pixel whose channels are doubles. Used to store intermediate values for pixel

// blending.

struct DoubleRGBMPixel {

  double r;

  double g;

  double b;

  double m;

  DoubleRGBMPixel() : r(0.0), g(0.0), b(0.0), m(0.0) {}

};

//---------------------------------------------------------------------------------

const double maxTone = TPixelCM32::getMaxTone();

// Returns the ink & paint convex factors associated with passed tone.

inline void getFactors(int tone, double &inkFactor, double &paintFactor) {

  paintFactor = tone / maxTone;

  inkFactor   = (1.0 - paintFactor);

}

//---------------------------------------------------------------------------------

// Copies the cmIn paint and ink colors to the output rasters.

static void buildLayers(const TRasterCM32P &cmIn,

                        const std::vector<tpixel32> &palColors,</tpixel32>

                        TRaster32P &inkRaster, TRaster32P &paintRaster) {

  // Separate cmIn by copying the ink & paint colors directly to the layer

  // rasters.

  TPixelCM32 *cmPix, *cmBegin = (TPixelCM32 *)cmIn->getRawData();

  TPixel32 *inkPix   = (TPixel32 *)inkRaster->getRawData();

  TPixel32 *paintPix = (TPixel32 *)paintRaster->getRawData();

  unsigned int i, j, lx = cmIn->getLx(), ly = cmIn->getLy(),

                     wrap = cmIn->getWrap();

  for (i = 0; i < ly; ++i) {

    cmPix = cmBegin + i * wrap;

    for (j = 0; j < lx; ++j, ++cmPix, ++inkPix, ++paintPix) {

      *inkPix   = palColors[cmPix->getInk()];

      *paintPix = palColors[cmPix->getPaint()];

      // Should pure colors be checked...?

    }

  }

}

//---------------------------------------------------------------------------------

// Returns true or false whether the selectedColor is the only selectable color

// in the neighbourhood. If so, the blend copies it to the output layer pixel

// directly.

inline bool isFlatNeighbourhood(int selectedColor, const TRasterCM32P &cmIn,

                                const TPoint &pos,

                                const SelectionRaster &selRas,

                                const BlurPattern &blurPattern) {

  TPixelCM32 &pix = cmIn->pixels(pos.y)[pos.x];

  int lx = cmIn->getLx(), ly = cmIn->getLy();

  unsigned int xy;

  TPoint samplePix;

  const TPoint *samplePoint =

      blurPattern.m_samples.empty() ? 0 : &blurPattern.m_samples[0];

  // Read the samples to determine if they only have posSelectedColor

  unsigned int i, samplesCount = blurPattern.m_samples.size();

  for (i = 0; i < samplesCount; ++i, ++samplePoint) {

    // Make sure the sample is inside the image

    samplePix.x = pos.x + samplePoint->x;

    samplePix.y = pos.y + samplePoint->y;

    xy = samplePix.x + lx * samplePix.y;

    if (samplePix.x < 0 || samplePix.y < 0 || samplePix.x >= lx ||

        samplePix.y >= ly)

      continue;

    if (!selRas.isPurePaint(xy) && selRas.isSelectedInk(xy))

      if (cmIn->pixels(samplePix.y)[samplePix.x].getInk() != selectedColor)

        return false;

    if (!selRas.isPureInk(xy) && selRas.isSelectedPaint(xy))

      if (cmIn->pixels(samplePix.y)[samplePix.x].getPaint() != selectedColor)

        return false;

  }

  return true;

}

//---------------------------------------------------------------------------------

// Calculates the estimate of blend selection in the neighbourhood specified by

// blurPattern.

inline void addSamples(const TRasterCM32P &cmIn, const TPoint &pos,

                       const TRaster32P &inkRas, const TRaster32P &paintRas,

                       const SelectionRaster &selRas,

                       const BlurPattern &blurPattern, DoubleRGBMPixel &pixSum,

                       double &factorsSum) {

  double inkFactor, paintFactor;

  unsigned int xy, j, l;

  int lx = cmIn->getLx(), ly = cmIn->getLy();

  TPixel32 *color;

  TPoint samplePos, pathPos;

  const TPoint *samplePoint =

      blurPattern.m_samples.empty() ? 0 : &blurPattern.m_samples[0];

  const TPoint *pathPoint;

  unsigned int i, blurSamplesCount = blurPattern.m_samples.size();

  for (i = 0; i < blurSamplesCount; ++i, ++samplePoint) {

    // Add each samples contribute to the sum

    samplePos.x = pos.x + samplePoint->x;

    samplePos.y = pos.y + samplePoint->y;

    if (samplePos.x < 0 || samplePos.y < 0 || samplePos.x >= lx ||

        samplePos.y >= ly)

      continue;

    // Ensure that each pixel on the sample's path (if any) is selected

    l         = blurPattern.m_samplePaths[i].size();

    pathPoint = blurPattern.m_samplePaths[i].empty()

                    ? 0

                    : &blurPattern.m_samplePaths[i][0];

    for (j = 0; j < l; ++j, ++pathPoint) {

      pathPos.x = pos.x + pathPoint->x;

      pathPos.y = pos.y + pathPoint->y;

      xy        = pathPos.x + lx * pathPos.y;

      if (!(selRas.isPurePaint(xy) || selRas.isSelectedInk(xy))) break;

      if (!(selRas.isPureInk(xy) || selRas.isSelectedPaint(xy))) break;

    }

    if (j < l) continue;

    xy = samplePos.x + lx * samplePos.y;

    if (selRas.isSelectedInk(xy) && !selRas.isPurePaint(xy)) {

      getFactors(cmIn->pixels(samplePos.y)[samplePos.x].getTone(), inkFactor,

                 paintFactor);

      color = &inkRas->pixels(samplePos.y)[samplePos.x];

      pixSum.r += inkFactor * color->r;

      pixSum.g += inkFactor * color->g;

      pixSum.b += inkFactor * color->b;

      pixSum.m += inkFactor * color->m;

      factorsSum += inkFactor;

    }

    if (selRas.isSelectedPaint(xy) && !selRas.isPureInk(xy)) {

      getFactors(cmIn->pixels(samplePos.y)[samplePos.x].getTone(), inkFactor,

                 paintFactor);

      color = &paintRas->pixels(samplePos.y)[samplePos.x];

      pixSum.r += paintFactor * color->r;

      pixSum.g += paintFactor * color->g;

      pixSum.b += paintFactor * color->b;

      pixSum.m += paintFactor * color->m;

      factorsSum += paintFactor;

    }

  }

}

//---------------------------------------------------------------------------------

typedef std::pair<traster32p, traster32p=""> RGBMRasterPair;</traster32p,>

//---------------------------------------------------------------------------------

// Performs a single color blending. This function can be repeatedly invoked to

// perform multiple color blending.

inline void doBlend(const TRasterCM32P &cmIn, RGBMRasterPair &inkLayer,

                    RGBMRasterPair &paintLayer, const SelectionRaster &selRas,

                    const std::vector<blurpattern> &blurPatterns) {</blurpattern>

  // Declare some vars

  unsigned int blurPatternsCount = blurPatterns.size();

  int lx = cmIn->getLx(), ly = cmIn->getLy();

  double totalFactor;

  TPixelCM32 *cmPix, *cmBegin = (TPixelCM32 *)cmIn->getRawData();

  TPixel32 *inkIn    = (TPixel32 *)inkLayer.first->getRawData(),

           *inkOut   = (TPixel32 *)inkLayer.second->getRawData(),

           *paintIn  = (TPixel32 *)paintLayer.first->getRawData(),

           *paintOut = (TPixel32 *)paintLayer.second->getRawData();

  const BlurPattern *blurPattern, *blurPatternsBegin = &blurPatterns[0];

  bool builtSamples = false;

  DoubleRGBMPixel samplesSum;

  // For every cmIn pixel

  TPoint pos;

  SelectionData *selData = selRas.data();

  cmPix                  = cmBegin;

  for (pos.y = 0; pos.y < ly;

       ++pos.y, cmPix = cmBegin + pos.y * cmIn->getWrap())

    for (pos.x = 0; pos.x < lx; ++pos.x, ++inkIn, ++inkOut, ++paintIn,

        ++paintOut, ++selData, ++cmPix) {

      blurPattern = blurPatternsBegin + (rand() % blurPatternsCount);

      // Build the ink blend color

      if (!selData->m_purePaint && selData->m_selectedInk) {

        if (!builtSamples) {

          // Build samples contributes

          totalFactor  = 1.0;

          samplesSum.r = samplesSum.g = samplesSum.b = samplesSum.m = 0.0;

          if (!isFlatNeighbourhood(cmPix->getInk(), cmIn, pos, selRas,

                                   *blurPattern))

            addSamples(cmIn, pos, inkLayer.first, paintLayer.first, selRas,

                       *blurPattern, samplesSum, totalFactor);

          builtSamples = true;

        }

        // Output the blended pixel

        inkOut->r = (samplesSum.r + inkIn->r) / totalFactor;

        inkOut->g = (samplesSum.g + inkIn->g) / totalFactor;

        inkOut->b = (samplesSum.b + inkIn->b) / totalFactor;

        inkOut->m = (samplesSum.m + inkIn->m) / totalFactor;

      } else {

        // If the color is not blended, then just copy the old layer pixel

        *inkOut = *inkIn;

      }

      // Build the paint blend color

      if (!selData->m_pureInk && selData->m_selectedPaint) {

        if (!builtSamples) {

          // Build samples contributes

          totalFactor  = 1.0;

          samplesSum.r = samplesSum.g = samplesSum.b = samplesSum.m = 0.0;

          if (!isFlatNeighbourhood(cmPix->getPaint(), cmIn, pos, selRas,

                                   *blurPattern))

            addSamples(cmIn, pos, inkLayer.first, paintLayer.first, selRas,

                       *blurPattern, samplesSum, totalFactor);

          builtSamples = true;

        }

        // Output the blended pixel

        paintOut->r = (samplesSum.r + paintIn->r) / totalFactor;

        paintOut->g = (samplesSum.g + paintIn->g) / totalFactor;

        paintOut->b = (samplesSum.b + paintIn->b) / totalFactor;

        paintOut->m = (samplesSum.m + paintIn->m) / totalFactor;

      } else {

        // If the color is not blended, then just copy the old layer pixel

        *paintOut = *paintIn;

      }

      builtSamples = false;

    }

}

//---------------------------------------------------------------------------------

typedef std::vector<blurpattern> BlurPatternContainer;</blurpattern>

//---------------------------------------------------------------------------------

/*! This function performs a group of  spatial color blending <\a> operations

   on Toonz Images.

    The BlendParam structure stores the blend options recognized by this

   function; it includes

    a list of the palette indexes involved in the blend operation, plus:

    \li \b Intensity represents the \a radius of the blur operation between

   blend colors.

    \li \b Smoothness is the number of samples per pixel used to approximate the

   blur.

    
  Stop at Contour <\b> specifies if lines from pixels to neighbouring

   samples

         should not trespass color indexes not included in the blend operation

   <\li>

    The succession of input blend parameters are applied in the order.

*/

template <typename pixel=""></typename>

void blend(TToonzImageP ti, TRasterPT<pixel> rasOut,</pixel>

           const std::vector<blendparam> ¶ms) {</blendparam>

  assert(ti->getRaster()->getSize() == rasOut->getSize());

  // Extract the interesting raster. It should be the savebox of passed cmap,

  // plus - if

  // some param has the 0 index as blending color - the intensity of that blend

  // param.

  unsigned int i, j;

  TRect saveBox(ti->getSavebox());

  int enlargement = 0;

  for (i = 0; i < params.size(); ++i)

    for (j = 0; j < params[i].colorsIndexes.size(); ++j)

      if (params[i].colorsIndexes[j] == 0)

        enlargement = std::max(enlargement, tceil(params[i].intensity));

  saveBox           = saveBox.enlarge(enlargement);

  TRasterCM32P cmIn(ti->getRaster()->extract(saveBox));

  TRasterPT<pixel> rasOutExtract = rasOut->extract(saveBox);</pixel>

  // Ensure that cmIn and rasOut have the same size

  unsigned int lx = cmIn->getLx(), ly = cmIn->getLy();

  // Build the pure colors infos

  SelectionRaster selectionRaster(cmIn);

  // Now, build a little group of BlurPatterns - and for each, one for passed

  // param.

  // A small number of patterns per param is needed to make the pattern look not

  // ever the same.

  const int blurPatternsPerParam = 10;

  std::vector<blurpatterncontainer> blurGroup(params.size());</blurpatterncontainer>

  for (i = 0; i < params.size(); ++i) {

    BlurPatternContainer &blurContainer = blurGroup[i];

    blurContainer.reserve(blurPatternsPerParam);

    for (j = 0; j < blurPatternsPerParam; ++j)

      blurContainer.push_back(BlurPattern(

          params[i].intensity, params[i].smoothness, params[i].stopAtCountour));

  }

  // Build the palette

  TPalette *palette = ti->getPalette();

  std::vector<tpixel32> paletteColors;</tpixel32>

  paletteColors.resize(palette->getStyleCount());

  for (i             = 0; i < paletteColors.size(); ++i)

    paletteColors[i] = premultiply(palette->getStyle(i)->getAverageColor());

  // Build the 4 auxiliary rasters for the blending procedure: they are ink /

  // paint versus input / output in the blend.

  // The output raster is reused to spare some memory - it should be, say, the

  // inkLayer's second at the end of the overall

  // blending procedure. It could be the first, without the necessity of

  // clearing it before blending the layers, but things

  // get more complicated when PIXEL is TPixel64...

  RGBMRasterPair inkLayer, paintLayer;

  TRaster32P rasOut32P_1(lx, ly, lx, (TPixel32 *)rasOut->getRawData(), false);

  inkLayer.first  = (params.size() % 2) ? rasOut32P_1 : TRaster32P(lx, ly);

  inkLayer.second = (params.size() % 2) ? TRaster32P(lx, ly) : rasOut32P_1;

  if (PIXEL::maxChannelValue >= TPixel64::maxChannelValue) {

    TRaster32P rasOut32P_2(lx, ly, lx,

                           ((TPixel32 *)rasOut->getRawData()) + lx * ly, false);

    paintLayer.first  = (params.size() % 2) ? rasOut32P_2 : TRaster32P(lx, ly);

    paintLayer.second = (params.size() % 2) ? TRaster32P(lx, ly) : rasOut32P_2;

  } else {

    paintLayer.first  = TRaster32P(lx, ly);

    paintLayer.second = TRaster32P(lx, ly);

  }

  inkLayer.first->clear();

  inkLayer.second->clear();

  paintLayer.first->clear();

  paintLayer.second->clear();

  // Now, we have to perform the blur of each of the cm's pixels.

  cmIn->lock();

  rasOut->lock();

  inkLayer.first->lock();

  inkLayer.second->lock();

  paintLayer.first->lock();

  paintLayer.second->lock();

  // Convert the initial cmIn to fullcolor ink - paint layers

  buildLayers(cmIn, paletteColors, inkLayer.first, paintLayer.first);

  // Perform the blend on separated ink - paint layers

  for (i = 0; i < params.size(); ++i) {

    if (params[i].colorsIndexes.size() == 0) continue;

    selectionRaster.updateSelection(cmIn, params[i]);

    doBlend(cmIn, inkLayer, paintLayer, selectionRaster, blurGroup[i]);

    tswap(inkLayer.first, inkLayer.second);

    tswap(paintLayer.first, paintLayer.second);

  }

  // Release the unnecessary rasters

  inkLayer.second->unlock();

  paintLayer.second->unlock();

  inkLayer.second   = TRaster32P();

  paintLayer.second = TRaster32P();

  // Clear rasOut - since it was reused to spare space...

  rasOut->clear();

  // Add the ink & paint layers on the output raster

  double PIXELmaxChannelValue = PIXEL::maxChannelValue;

  double toPIXELFactor =

      PIXELmaxChannelValue / (double)TPixel32::maxChannelValue;

  double inkFactor, paintFactor;

  TPoint pos;

  PIXEL *outPix, *outBegin    = (PIXEL *)rasOutExtract->getRawData();

  TPixelCM32 *cmPix, *cmBegin = (TPixelCM32 *)cmIn->getRawData();

  int wrap = rasOutExtract->getWrap();

  TPixel32 *inkPix   = (TPixel32 *)inkLayer.first->getRawData();

  TPixel32 *paintPix = (TPixel32 *)paintLayer.first->getRawData();

  for (i = 0; i < ly; ++i) {

    outPix = outBegin + wrap * i;

    cmPix  = cmBegin + wrap * i;

    for (j = 0; j < lx; ++j, ++outPix, ++cmPix, ++inkPix, ++paintPix) {

      getFactors(cmPix->getTone(), inkFactor, paintFactor);

      outPix->r = tcrop(

          toPIXELFactor * (inkFactor * inkPix->r + paintFactor * paintPix->r),

          0.0, PIXELmaxChannelValue);

      outPix->g = tcrop(

          toPIXELFactor * (inkFactor * inkPix->g + paintFactor * paintPix->g),

          0.0, PIXELmaxChannelValue);

      outPix->b = tcrop(

          toPIXELFactor * (inkFactor * inkPix->b + paintFactor * paintPix->b),

          0.0, PIXELmaxChannelValue);

      outPix->m = tcrop(

          toPIXELFactor * (inkFactor * inkPix->m + paintFactor * paintPix->m),

          0.0, PIXELmaxChannelValue);

    }

  }

  inkLayer.first->unlock();

  paintLayer.first->unlock();

  cmIn->unlock();

  rasOut->unlock();

  // Destroy the auxiliary bitmaps

  selectionRaster.destroy();

}

template void blend<tpixel32>(TToonzImageP cmIn, TRasterPT<tpixel32> rasOut,</tpixel32></tpixel32>

                              const std::vector<blendparam> ¶ms);</blendparam>

template void blend<tpixel64>(TToonzImageP cmIn, TRasterPT<tpixel64> rasOut,</tpixel64></tpixel64>

                              const std::vector<blendparam> ¶ms);</blendparam>