#include "texception.h"

#include "tfxparam.h"

#include "stdfx.h"

#include "tspectrumparam.h"

#include "tparamuiconcept.h"

class DiamondGradientFx final : public TStandardZeraryFx {

  FX_PLUGIN_DECLARATION(DiamondGradientFx)

  TSpectrumParamP m_colors;

  TDoubleParamP m_size;

public:

  DiamondGradientFx() : m_size(100.0) {

    TSpectrum::ColorKey colors[] = {TSpectrum::ColorKey(0, TPixel32::White),

                                    TSpectrum::ColorKey(0.2, TPixel32::Yellow),

                                    TSpectrum::ColorKey(0.4, TPixel32::Blue),

                                    TSpectrum::ColorKey(0.6, TPixel32::Green),

                                    TSpectrum::ColorKey(0.8, TPixel32::Magenta),

                                    TSpectrum::ColorKey(1, TPixel32::Red)};

    m_colors = TSpectrumParamP(tArrayCount(colors), colors);

    m_size->setMeasureName("fxLength");

    bindParam(this, "colors", m_colors);

    bindParam(this, "size", m_size);

  }

  ~DiamondGradientFx(){};

  bool doGetBBox(double, TRectD &bBox, const TRenderSettings &info) override {

    bBox = TConsts::infiniteRectD;

    return true;

  };

  void doCompute(TTile &tile, double frame, const TRenderSettings &ri) override;

  bool canHandle(const TRenderSettings &info, double frame) override {

    return false;

  }

  void getParamUIs(TParamUIConcept *&concepts, int &length) override {

    concepts = new TParamUIConcept[length = 1];

    concepts[0].m_type  = TParamUIConcept::RADIUS;

    concepts[0].m_label = "Size";

    concepts[0].m_params.push_back(m_size);

  }

};

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

void doDiamondGradient(const TRasterPT<pixel> &ras,</pixel>

                       const TSpectrumT<pixel> &spectrum, TPointD &tilepos,</pixel>

                       double size) {

  PIXEL outpixel = spectrum.getPremultipliedValue(1.);

  int j;

  ras->lock();

  for (j = 0; j < ras->getLy(); j++) {

    TPointD pos = tilepos;

    pos.y += j;

    double fy     = fabs(pos.y) / size;

    PIXEL *pix    = ras->pixels(j);

    PIXEL *endPix = pix + ras->getLx();

    while (pix < endPix) {

      double s;

      double fx = fabs(pos.x) / size;

      if ((fx * fy) < 1) {

        s      = fx * fy;

        *pix++ = spectrum.getPremultipliedValue(s);

      } else

        *pix++ = outpixel;

      pos.x += 1.0;

    }

  }

  ras->unlock();

}

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

void DiamondGradientFx::doCompute(TTile &tile, double frame,

                                  const TRenderSettings &ri) {

  double size = m_size->getValue(frame) * ri.m_affine.a11 / ri.m_shrinkX;

  TPointD pos = tile.m_pos;

  if (TRaster32P raster32 = tile.getRaster())

    doDiamondGradient<tpixel32>(raster32, m_colors->getValue(frame), pos, size);</tpixel32>

  else if (TRaster64P raster64 = tile.getRaster())

    doDiamondGradient<tpixel64>(raster64, m_colors->getValue64(frame), pos,</tpixel64>

                                size);

  else

    throw TException("DiamondGradientFx: unsupported Pixel Type");

}

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

FX_PLUGIN_IDENTIFIER(DiamondGradientFx, "diamondGradientFx");