#include "stdfx.h"

#include "tfxparam.h"

#include "ttzpimagefx.h"

#include "timage_io.h"

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

class TileFx final : public TStandardRasterFx {

  FX_PLUGIN_DECLARATION(TileFx)

  enum tilingMode { eTile = 1, eTileHorizontally = 2, eTileVertically = 3 };

  TRasterFxPort m_input;

  TIntEnumParamP m_mode;

  TBoolParamP m_xMirror;

  TBoolParamP m_yMirror;

  TDoubleParamP m_margin;

public:

  TileFx();

  ~TileFx();

  bool doGetBBox(double frame, TRectD &bBox,

                 const TRenderSettings &info) override;

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

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

  int getMemoryRequirement(const TRectD &rect, double frame,

                           const TRenderSettings &info) override;

  void transform(double frame, int port, const TRectD &rectOnOutput,

                 const TRenderSettings &infoOnOutput, TRectD &rectOnInput,

                 TRenderSettings &infoOnInput) override;

private:

  void makeTile(const TTile &inputTile, const TTile &tile) const;

};

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

TileFx::TileFx()

    : m_mode(new TIntEnumParam(eTile, "Tile"))

    , m_xMirror(false)

    , m_yMirror(false)

    , m_margin(-1.0) {

  m_margin->setMeasureName("fxLength");

  addInputPort("Source", m_input);

  bindParam(this, "mode", m_mode);

  bindParam(this, "xMirror", m_xMirror);

  bindParam(this, "yMirror", m_yMirror);

  bindParam(this, "margin", m_margin);

  m_mode->addItem(eTileHorizontally, "Tile Horizontally");

  m_mode->addItem(eTileVertically, "Tile Vertically");

}

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

TileFx::~TileFx() {}

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

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

  // Currently, only affines which transform the X and Y axis into themselves

  // may

  // be handled by this fx...

  return (fabs(info.m_affine.a12) < 0.0001 &&

          fabs(info.m_affine.a21) < 0.0001) ||

         (fabs(info.m_affine.a11) < 0.0001 && fabs(info.m_affine.a22) < 0.0001);

}

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

bool TileFx::doGetBBox(double frame, TRectD &bBox,

                       const TRenderSettings &info) {

  if (m_input.isConnected()) {

    bBox = TConsts::infiniteRectD;

    return true;

  } else {

    bBox = TRectD();

    return false;

  }

}

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

void TileFx::transform(double frame, int port, const TRectD &rectOnOutput,

                       const TRenderSettings &infoOnOutput, TRectD &rectOnInput,

                       TRenderSettings &infoOnInput) {

  infoOnInput = infoOnOutput;

  if (!m_input.isConnected()) {

    rectOnInput.empty();

    return;

  }

  TRectD inputBox;

  m_input->getBBox(frame, inputBox, infoOnOutput);

  double scale = sqrt(fabs(infoOnOutput.m_affine.det()));

  int margin   = m_margin->getValue(frame) * scale;

  inputBox     = inputBox.enlarge(margin);

  if (inputBox.isEmpty()) {

    rectOnInput.empty();

    return;

  }

  if (inputBox == TConsts::infiniteRectD) {

    infoOnInput = infoOnOutput;

    return;

  }

  TDimensionD size(0, 0);

  size.lx     = tceil(inputBox.getLx());

  size.ly     = tceil(inputBox.getLy());

  rectOnInput = TRectD(inputBox.getP00(), size);

}

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

int TileFx::getMemoryRequirement(const TRectD &rect, double frame,

                                 const TRenderSettings &info) {

  if (!m_input.isConnected()) return 0;

  TRectD inputBox;

  m_input->getBBox(frame, inputBox, info);

  double scale = sqrt(fabs(info.m_affine.det()));

  int margin   = m_margin->getValue(frame) * scale;

  inputBox     = inputBox.enlarge(margin);

  return TRasterFx::memorySize(inputBox, info.m_bpp);

}

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

void TileFx::doCompute(TTile &tile, double frame, const TRenderSettings &ri) {

  if (!m_input.isConnected()) return;

  TRectD inputBox;

  m_input->getBBox(frame, inputBox, ri);

  double scale = sqrt(fabs(ri.m_affine.det()));

  int margin   = m_margin->getValue(frame) * scale;

  inputBox     = inputBox.enlarge(margin);

  if (inputBox.isEmpty()) return;

  if (inputBox == TConsts::infiniteRectD) {

    m_input->compute(tile, frame, ri);

    return;

  }

  TDimension size(0, 0);

  size.lx = tceil(inputBox.getLx());

  size.ly = tceil(inputBox.getLy());

  TTile inputTile;

  m_input->allocateAndCompute(inputTile, inputBox.getP00(), size,

                              tile.getRaster(), frame, ri);

  makeTile(inputTile, tile);

}

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

//! Make the tile of the image contained in \b inputTile in \b tile

/*

 */

void TileFx::makeTile(const TTile &inputTile, const TTile &tile) const {

  // Build the mirroring pattern. It obviously repeats itself out of 2x2 tile

  // blocks.

  std::map<std::pair<bool, bool="">, TRasterP> mirrorRaster;</std::pair<bool,>

  mirrorRaster[std::pair<bool, bool="">(false, false)] = inputTile.getRaster();</bool,>

  mirrorRaster[std::pair<bool, bool="">(false, true)] =</bool,>

      inputTile.getRaster()->clone();

  mirrorRaster[std::pair<bool, bool="">(false, true)]->yMirror();</bool,>

  mirrorRaster[std::pair<bool, bool="">(true, false)] =</bool,>

      inputTile.getRaster()->clone();

  mirrorRaster[std::pair<bool, bool="">(true, false)]->xMirror();</bool,>

  mirrorRaster[std::pair<bool, bool="">(true, true)] =</bool,>

      mirrorRaster[std::pair<bool, bool="">(true, false)]->clone();</bool,>

  mirrorRaster[std::pair<bool, bool="">(true, true)]->yMirror();</bool,>

  TPoint animatedPos = convert(inputTile.m_pos - tile.m_pos);

  TDimension inSize  = inputTile.getRaster()->getSize();

  TDimension outSize = tile.getRaster()->getSize();

  bool mirrorX = false, mirrorY = false;

  int mode             = m_mode->getValue();

  bool tileOrizontally = mode == 1 || mode == 2;

  bool tileVertically  = mode == 1 || mode == 3;

  // Reach the lower left tiling position

  while (animatedPos.x > 0 && tileOrizontally) {

    animatedPos.x -= inSize.lx;

    mirrorX = !mirrorX;

  }

  while (animatedPos.x + inSize.lx < 0 && tileOrizontally) {

    animatedPos.x += inSize.lx;

    mirrorX = !mirrorX;

  }

  while (animatedPos.y > 0 && tileVertically) {

    animatedPos.y -= inSize.ly;

    mirrorY = !mirrorY;

  }

  while (animatedPos.y + inSize.ly < 0 && tileVertically) {

    animatedPos.y += inSize.ly;

    mirrorY = !mirrorY;

  }

  bool doMirroX = mirrorX, doMirroY = mirrorY;

  // Write the tiling blocks.

  tile.getRaster()->lock();

  inputTile.getRaster()->lock();

  TPoint startTilingPos = animatedPos;

  do {

    do {

      std::pair<bool, bool=""> doMirror(doMirroX && m_xMirror->getValue(),</bool,>

                                     doMirroY && m_yMirror->getValue());

      tile.getRaster()->copy(mirrorRaster[doMirror], startTilingPos);

      startTilingPos.x += inSize.lx;

      doMirroX = !doMirroX;

    } while (startTilingPos.x < outSize.lx && tileOrizontally);

    startTilingPos.y += inSize.ly;

    startTilingPos.x = animatedPos.x;

    doMirroY         = !doMirroY;

    doMirroX         = mirrorX;

  } while (startTilingPos.y < outSize.ly && tileVertically);

  inputTile.getRaster()->unlock();

  tile.getRaster()->unlock();

}

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

FX_PLUGIN_IDENTIFIER(TileFx, "tileFx");