#include "stdfx.h"

#include "tfxparam.h"

#include "warp.h"

#include "trop.h"

#include "trasterfx.h"

#include "tspectrumparam.h"

#include "gradients.h"

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

class LinearWaveFx : public TStandardRasterFx {

  FX_PLUGIN_DECLARATION(LinearWaveFx)

protected:

  TRasterFxPort m_warped;

  TDoubleParamP m_intensity;

  TDoubleParamP m_gridStep;

  TDoubleParamP m_count;

  TDoubleParamP m_period;

  TDoubleParamP m_cycle;

  TDoubleParamP m_amplitude;

  TDoubleParamP m_frequency;

  TDoubleParamP m_phase;

  TDoubleParamP m_angle;

  TBoolParamP m_sharpen;

public:

  LinearWaveFx()

      : m_intensity(20)

      , m_gridStep(2)

      , m_period(100)

      , m_count(20)

      , m_cycle(0.0)

      , m_amplitude(50.0)

      , m_frequency(200.0)

      , m_phase(0.0)

      , m_angle(0.0)

      , m_sharpen(false) {

    addInputPort("Source", m_warped);

    bindParam(this, "intensity", m_intensity);

    bindParam(this, "sensitivity", m_gridStep);

    bindParam(this, "period", m_period);

    bindParam(this, "count", m_count);

    bindParam(this, "cycle", m_cycle);

    bindParam(this, "amplitude", m_amplitude);

    bindParam(this, "frequency", m_frequency);

    bindParam(this, "phase", m_phase);

    bindParam(this, "angle", m_angle);

    bindParam(this, "sharpen", m_sharpen);

    m_intensity->setValueRange(-1000, 1000);

    m_gridStep->setValueRange(2, 20);

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

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

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

    m_period->setMeasureName("fxLength");

    m_amplitude->setMeasureName("fxLength");

  }

  virtual ~LinearWaveFx() {}

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

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

    return isAlmostIsotropic(info.m_affine);

  }

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

  bool doGetBBox(double frame, TRectD &bBox,

                 const TRenderSettings &info) override {

    if (m_warped.isConnected()) {

      int ret = m_warped->doGetBBox(frame, bBox, info);

      if (ret && !bBox.isEmpty()) {

        if (bBox != TConsts::infiniteRectD) {

          WarpParams params;

          params.m_intensity = m_intensity->getValue(frame);

          bBox = bBox.enlarge(getWarpRadius(params));

        }

        return true;

      }

    }

    bBox = TRectD();

    return false;

  }

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

  void doDryCompute(TRectD &rect, double frame,

                    const TRenderSettings &info) override {

    bool isWarped = m_warped.isConnected();

    if (!isWarped) return;

    if (fabs(m_intensity->getValue(frame)) < 0.01) {

      m_warped->dryCompute(rect, frame, info);

      return;

    }

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

    double gridStep = 1.5 * m_gridStep->getValue(frame);

    WarpParams params;

    params.m_intensity   = m_intensity->getValue(frame) / gridStep;

    params.m_warperScale = scale * gridStep;

    params.m_sharpen     = m_sharpen->getValue();

    TRectD warpedBox, warpedComputeRect, tileComputeRect;

    m_warped->getBBox(frame, warpedBox, info);

    getWarpComputeRects(tileComputeRect, warpedComputeRect, warpedBox, rect,

                        params);

    if (tileComputeRect.getLx() <= 0 || tileComputeRect.getLy() <= 0) return;

    if (warpedComputeRect.getLx() <= 0 || warpedComputeRect.getLy() <= 0)

      return;

    m_warped->dryCompute(warpedComputeRect, frame, info);

  }

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

  void doCompute(TTile &tile, double frame,

                 const TRenderSettings &info) override {

    bool isWarped = m_warped.isConnected();

    if (!isWarped) return;

    if (fabs(m_intensity->getValue(frame)) < 0.01) {

      m_warped->compute(tile, frame, info);

      return;

    }

    int shrink      = (info.m_shrinkX + info.m_shrinkY) / 2;

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

    double gridStep = 1.5 * m_gridStep->getValue(frame);

    WarpParams params;

    params.m_intensity   = m_intensity->getValue(frame) / gridStep;

    params.m_warperScale = scale * gridStep;

    params.m_sharpen     = m_sharpen->getValue();

    params.m_shrink      = shrink;

    double period        = m_period->getValue(frame) / info.m_shrinkX;

    double count         = m_count->getValue(frame);

    double cycle         = m_cycle->getValue(frame) / info.m_shrinkX;

    double w_amplitude = m_amplitude->getValue(frame) / info.m_shrinkX;

    double w_freq      = m_frequency->getValue(frame) * info.m_shrinkX;

    double w_phase     = m_phase->getValue(frame);

    w_freq *= 0.01 * M_PI_180;

    double angle = -m_angle->getValue(frame);

    // The warper is calculated on a standard reference, with fixed dpi. This

    // makes sure

    // that the lattice created for the warp does not depend on camera

    // transforms and resolution.

    TRenderSettings warperInfo(info);

    double warperScaleFactor = 1.0 / params.m_warperScale;

    warperInfo.m_affine      = TScale(warperScaleFactor) * info.m_affine;

    // Retrieve tile's geometry

    TRectD tileRect;

    {

      TRasterP tileRas = tile.getRaster();

      tileRect =

          TRectD(tile.m_pos, TDimensionD(tileRas->getLx(), tileRas->getLy()));

    }

    // Build the compute rect

    TRectD warpedBox, warpedComputeRect, tileComputeRect;

    m_warped->getBBox(frame, warpedBox, info);

    getWarpComputeRects(tileComputeRect, warpedComputeRect, warpedBox, tileRect,

                        params);

    if (tileComputeRect.getLx() <= 0 || tileComputeRect.getLy() <= 0) return;

    if (warpedComputeRect.getLx() <= 0 || warpedComputeRect.getLy() <= 0)

      return;

    TRectD warperComputeRect(TScale(warperScaleFactor) * tileComputeRect);

    double warperEnlargement = getWarperEnlargement(params);

    warperComputeRect        = warperComputeRect.enlarge(warperEnlargement);

    warperComputeRect.x0     = tfloor(warperComputeRect.x0);

    warperComputeRect.y0     = tfloor(warperComputeRect.y0);

    warperComputeRect.x1     = tceil(warperComputeRect.x1);

    warperComputeRect.y1     = tceil(warperComputeRect.y1);

    // Compute the warped tile

    TTile tileIn;

    m_warped->allocateAndCompute(

        tileIn, warpedComputeRect.getP00(),

        TDimension(warpedComputeRect.getLx(), warpedComputeRect.getLy()),

        tile.getRaster(), frame, info);

    TRasterP rasIn = tileIn.getRaster();

    // Compute the warper tile

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

                                    TSpectrum::ColorKey(0.5, TPixel32::Black),

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

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

    // Build the multiradial

    warperInfo.m_affine = warperInfo.m_affine * TRotation(angle);

    TAffine aff         = warperInfo.m_affine.inv();

    TPointD posTrasf    = aff * warperComputeRect.getP00();

    TRasterP rasWarper =

        rasIn->create(warperComputeRect.getLx(), warperComputeRect.getLy());

    multiLinear(rasWarper, posTrasf, wavecolors, period, count, w_amplitude,

                w_freq, w_phase, cycle, aff, frame);

    // Warp

    TPointD db;

    TRect rasComputeRectI(convert(tileComputeRect - tileRect.getP00(), db));

    TRasterP tileRas = tile.getRaster()->extract(rasComputeRectI);

    TPointD rasInPos(warpedComputeRect.getP00() - tileComputeRect.getP00());

    TPointD warperPos(

        (TScale(params.m_warperScale) * warperComputeRect.getP00()) -

        tileComputeRect.getP00());

    warp(tileRas, rasIn, rasWarper, rasInPos, warperPos, params);

  }

  int getMemoryRequirement(const TRectD &rect, double frame,

                           const TRenderSettings &info) override {

    // return -1;   //Deactivated. This fx is currently very inefficient if

    // subdivided!

    int shrink      = (info.m_shrinkX + info.m_shrinkY) / 2;

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

    double gridStep = 1.5 * m_gridStep->getValue(frame);

    WarpParams params;

    params.m_intensity   = m_intensity->getValue(frame) / gridStep;

    params.m_warperScale = scale * gridStep;

    params.m_sharpen     = m_sharpen->getValue();

    params.m_shrink      = shrink;

    double warperScaleFactor = 1.0 / params.m_warperScale;

    TRectD warpedBox, warpedComputeRect, tileComputeRect;

    m_warped->getBBox(frame, warpedBox, info);

    getWarpComputeRects(tileComputeRect, warpedComputeRect, warpedBox, rect,

                        params);

    TRectD warperComputeRect(TScale(warperScaleFactor) * tileComputeRect);

    double warperEnlargement = getWarperEnlargement(params);

    warperComputeRect        = warperComputeRect.enlarge(warperEnlargement);

    return std::max(TRasterFx::memorySize(warpedComputeRect, info.m_bpp),

                    TRasterFx::memorySize(warperComputeRect, info.m_bpp));

  }

};

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

FX_PLUGIN_IDENTIFIER(LinearWaveFx, "linearWaveFx")