#include "texception.h"

#include "tfxparam.h"

#include "stdfx.h"

#include "tspectrumparam.h"

#include "tparamuiconcept.h"

#undef max

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

class SquareGradientFx final : public TStandardZeraryFx {

  FX_PLUGIN_DECLARATION(SquareGradientFx)

  TSpectrumParamP m_colors;

  TDoubleParamP m_size;

public:

  SquareGradientFx() : m_size(200.0) {

    m_size->setMeasureName("fxLength");

    std::vector<tspectrum::colorkey> colors = {</tspectrum::colorkey>

        TSpectrum::ColorKey(0, TPixel32::White),

        // TSpectrum::ColorKey(0.5,TPixel32::Yellow),

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

    m_colors = TSpectrumParamP(colors);

    bindParam(this, "colors", m_colors);

    bindParam(this, "size", m_size);

    m_size->setValueRange(0, std::numeric_limits<double>::max());</double>

  }

  ~SquareGradientFx(){};

  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 true;

  }

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

    concepts = new TParamUIConcept[length = 1];

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

    concepts[0].m_label = "Size";

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

  }

};

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

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

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

                      TAffine aff, double size) {

  PIXEL outpixel = spectrum.getPremultipliedValue(1.);

  int j;

  ras->lock();

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

    TPointD posAux = posTrasf;

    TPointD fp;

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

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

    while (pix < endPix) {

      double s;

      fp.x = fabs(posAux.x) / size;

      fp.y = fabs(posAux.y) / size;

      if ((fp.x + fp.y) < 1) {

        s      = fp.x + fp.y;

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

      } else

        *pix++ = outpixel;

      posAux.x += aff.a11;

      posAux.y += aff.a21;

    }

    posTrasf.x += aff.a12;

    posTrasf.y += aff.a22;

  }

  ras->unlock();

}

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

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

                                 const TRenderSettings &ri) {

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

  ;

  TAffine aff      = ri.m_affine.inv();

  TPointD posTrasf = aff * tile.m_pos;

  if (TRaster32P raster32 = tile.getRaster())

    doSquareGradient<tpixel32>(raster32, m_colors->getValue(frame), posTrasf,</tpixel32>

                               aff, size);

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

    doSquareGradient<tpixel64>(raster64, m_colors->getValue64(frame), posTrasf,</tpixel64>

                               aff, size);

  else

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

}

FX_PLUGIN_IDENTIFIER(SquareGradientFx, "squareGradientFx");