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#include <sstream> /* std::ostringstream */</sstream>
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#include "tfxparam.h"
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#include "stdfx.h"
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#include "tfxattributes.h"
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#include "ino_common.h"
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#include "igs_gaussian_blur.h"
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//------------------------------------------------------------
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class ino_blur final : public TStandardRasterFx {
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  FX_PLUGIN_DECLARATION(ino_blur)
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  TRasterFxPort m_input;
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  TRasterFxPort m_refer;
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  TDoubleParamP m_radius;
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  TIntEnumParamP m_ref_mode;
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public:
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  ino_blur() : m_radius(1.0), m_ref_mode(new TIntEnumParam(0, "Red")) {
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    addInputPort("Source", this->m_input);
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    addInputPort("Reference", this->m_refer);
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    bindParam(this, "radius", this->m_radius);
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    bindParam(this, "reference", this->m_ref_mode);
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    this->m_radius->setMeasureName("fxLength");
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    this->m_radius->setValueRange(0.0, 1000.0);
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    this->m_ref_mode->addItem(1, "Green");
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    this->m_ref_mode->addItem(2, "Blue");
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    this->m_ref_mode->addItem(3, "Alpha");
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    this->m_ref_mode->addItem(4, "Luminance");
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    this->m_ref_mode->addItem(-1, "Nothing");
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  }
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  //------------------------------------------------------------
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  double get_render_real_radius(const double frame, const TAffine affine) {
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    /*--- ベクトルにする --- */
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    TPointD rend_vect;
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    rend_vect.x = this->m_radius->getValue(frame);
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    rend_vect.y = 0.0;
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    /*--- render用単位にする ---*/
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    rend_vect = rend_vect * ino::pixel_per_mm();
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    /* 単位変換(mm --> render_pixel) */
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    /*--- 回転と拡大縮小のGeometryを反映させる ---*/
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    /* 以下は、
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toonz/main/sources/stdfx/motionblurfx.cpp
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586-592行を参照して書いた
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*/
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    TAffine aff(affine);
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    aff.a13 = aff.a23 = 0; /* 移動変換をしないで... */
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    rend_vect         = aff * rend_vect;
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    /*--- 方向は無視して長さを返す ---*/
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    return sqrt(rend_vect.x * rend_vect.x + rend_vect.y * rend_vect.y);
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  }
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  void get_render_enlarge(const double frame, const TAffine affine,
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                          TRectD &bBox) {
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    const int margin = igs::gaussian_blur_hv::int_radius(
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        this->get_render_real_radius(frame, affine));
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    if (0 < margin) {
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      bBox = bBox.enlarge(static_cast<double>(margin));</double>
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    }
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  }
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  //------------------------------------------------------------
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  bool doGetBBox(double frame, TRectD &bBox,
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                 const TRenderSettings &info) override {
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    if (false == this->m_input.isConnected()) {
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      bBox = TRectD();
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      return false;
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    }
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    const bool ret = this->m_input->doGetBBox(frame, bBox, info);
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    this->get_render_enlarge(frame, info.m_affine, bBox);
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    return ret;
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  }
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  int getMemoryRequirement(const TRectD &rect, double frame,
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                           const TRenderSettings &info) override {
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    TRectD bBox(rect);
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    this->get_render_enlarge(frame, info.m_affine, bBox);
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    return TRasterFx::memorySize(bBox, info.m_bpp);
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  }
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  void transform(double frame, int port, const TRectD &rectOnOutput,
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                 const TRenderSettings &infoOnOutput, TRectD &rectOnInput,
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                 TRenderSettings &infoOnInput) override {
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    rectOnInput = rectOnOutput;
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    infoOnInput = infoOnOutput;
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    this->get_render_enlarge(frame, infoOnOutput.m_affine, rectOnInput);
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  }
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  bool canHandle(const TRenderSettings &info, double frame) override {
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    if (0 == this->m_radius->getValue(frame)) {
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      return true;
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    } else {
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      return isAlmostIsotropic(info.m_affine);
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    }
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  }
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  void doCompute(TTile &tile, double frame,
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                 const TRenderSettings &rend_sets) override;
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};
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FX_PLUGIN_IDENTIFIER(ino_blur, "inoBlurFx");
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//------------------------------------------------------------
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namespace {
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void fx_(const TRasterP in_ras  // with margin
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         ,
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         TRasterP out_ras  // no margin
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         ,
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         const TRasterP refer_ras, const int ref_mode
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         ,
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         const int int_radius, const double real_radius) {
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  TRasterGR8P out_buffer(out_ras->getLy(),
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                         out_ras->getLx() * ino::channels() *
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                             ((TRaster64P)in_ras ? sizeof(unsigned short)
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                                                 : sizeof(unsigned char)));
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  const int buffer_bytes = igs::gaussian_blur_hv::buffer_bytes(
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      in_ras->getLy(), in_ras->getLx(), int_radius);
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  TRasterGR8P cvt_buffer(buffer_bytes, 1);
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  out_buffer->lock();
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  cvt_buffer->lock();
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  igs::gaussian_blur_hv::convert(
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      in_ras->getRawData()  // const void *in_with_margin (BGRA)
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      ,
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      out_buffer->getRawData()  // void *out_no_margin (BGRA)
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      ,
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      in_ras->getLy()  // const int height_with_margin
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      ,
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      in_ras->getLx()  // const int width_with_margin
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      ,
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      ino::channels()  // const int channels
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      ,
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      ino::bits(in_ras)  // const int bits
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      ,
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      (((0 <= ref_mode) && (0 != refer_ras)) ? refer_ras->getRawData()
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                                             : 0)  // BGRA
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      // const unsigned char *ref
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      ,
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      (((0 <= ref_mode) && (0 != refer_ras)) ? ino::bits(refer_ras) : 0)
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      // const int ref_bits
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      ,
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      ref_mode  // const int ref_mode
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      ,
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      cvt_buffer->getRawData()  // void *buffer
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      ,
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      buffer_bytes  // int buffer_bytes
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      ,
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      int_radius  // const int int_radius
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      ,
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      real_radius  // const double real_radius
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                   // , 0.25
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      );
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  ino::arr_to_ras(out_buffer->getRawData(), ino::channels(), out_ras, 0);
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  cvt_buffer->unlock();
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  out_buffer->unlock();
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}
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}
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//------------------------------------------------------------
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void ino_blur::doCompute(TTile &tile, double frame,
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                         const TRenderSettings &rend_sets) {
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  /*------ 接続していなければ処理しない ----------------------*/
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  if (!this->m_input.isConnected()) {
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    tile.getRaster()->clear(); /* 塗りつぶしクリア */
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    return;
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  }
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  /*------ サポートしていないPixelタイプはエラーを投げる -----*/
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  if (!((TRaster32P)tile.getRaster()) && !((TRaster64P)tile.getRaster())) {
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    throw TRopException("unsupported input pixel type");
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  }
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  /*------ ボケ足長さの実際の長さをえる ----------------------*/
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  const double real_radius =
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      this->get_render_real_radius(frame, rend_sets.m_affine);
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  const int int_radius = igs::gaussian_blur_hv::int_radius(real_radius);
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  /*------ ボケ足長さがゼロのときはblur処理しない ------------*/
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  if (0 == int_radius) {
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    this->m_input->compute(tile, frame, rend_sets);
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    return;
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  }
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  /*------- 動作パラメータを得る -----------------------------*/
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  const int ref_mode = this->m_ref_mode->getValue();
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  /*------ 表示の範囲を得る ----------------------------------*/
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  TRectD bBox =
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      TRectD(tile.m_pos /* Render画像上(Pixel単位)の位置 */
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             ,
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             TDimensionD(/* Render画像上(Pixel単位)のサイズ */
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                         tile.getRaster()->getLx(), tile.getRaster()->getLy()));
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  /*------ ぼけ半径(=マージン)分表示範囲を広げる -------------*/
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  if (0 < int_radius) {
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    bBox = bBox.enlarge(static_cast<double>(int_radius));</double>
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  }
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  /* ------ margin付き画像生成 ------------------------------ */
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  /*
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void allocateAndCompute(
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TTile &tile
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,const TPointD &pos
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,const TDimension &size // TDimension = TDimensionI = TDimensionT<int></int>
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,TRasterP templateRas
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,double frame
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,const TRenderSettings &info
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);
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*/
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  TTile enlarge_tile;
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  this->m_input->allocateAndCompute(
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      enlarge_tile, bBox.getP00(),
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      TDimensionI(/* Pixel単位に四捨五入 */
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                  static_cast<int>(bBox.getLx() + 0.5),</int>
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                  static_cast<int>(bBox.getLy() + 0.5)),</int>
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      tile.getRaster(), frame, rend_sets);
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  /*------ 参照画像生成 --------------------------------------*/
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  TTile ref_tile;
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  bool ref_sw = false;
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  if (this->m_refer.isConnected()) {
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    ref_sw = true;
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    this->m_refer->allocateAndCompute(
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        ref_tile, tile.m_pos /* TPointD */
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        ,
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        tile.getRaster()->getSize() /* Pixel単位 */
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        ,
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        tile.getRaster(), frame, rend_sets);
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  }
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  /* ------ 保存すべき画像メモリを塗りつぶしクリア ---------- */
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  tile.getRaster()->clear(); /* 塗りつぶしクリア */
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  /* ------ (app_begin)log記憶 ------------------------------ */
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  const bool log_sw = ino::log_enable_sw();
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  if (log_sw) {
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    std::ostringstream os;
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    os << "params"
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       << "  usr_radius " << this->m_radius->getValue(frame) << "  real_radius "
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       << real_radius << "  int_radius " << int_radius << "  ref_mode "
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       << ref_mode << "  tile"
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       << " pos " << tile.m_pos << " w " << tile.getRaster()->getLx() << " h "
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       << tile.getRaster()->getLy() << "  enl_tile"
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       << " w " << enlarge_tile.getRaster()->getLx() << " h "
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       << enlarge_tile.getRaster()->getLy() << "  pixbits "
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       << ino::pixel_bits(tile.getRaster()) << "  frame " << frame
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       << "  affine a11 " << rend_sets.m_affine.a11 << "  a12 "
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       << rend_sets.m_affine.a12 << "  a21 " << rend_sets.m_affine.a21
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       << "  a22 " << rend_sets.m_affine.a22;
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    if (ref_sw) {
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      os << "  ref_tile"
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         << " pos " << ref_tile.m_pos << " x " << ref_tile.getRaster()->getLx()
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         << " y " << ref_tile.getRaster()->getLy();
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    }
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  }
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  /* ------ fx処理 ------------------------------------------ */
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  try {
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    tile.getRaster()->lock();
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    fx_(enlarge_tile.getRaster()  // in with margin
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        ,
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        tile.getRaster()  // out with no margin
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        ,
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        ref_tile.getRaster(), ref_mode
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        ,
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        int_radius  // margin
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        ,
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        real_radius);
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    tile.getRaster()->unlock();
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  }
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  /* ------ error処理 --------------------------------------- */
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  catch (std::bad_alloc &e) {
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    tile.getRaster()->unlock();
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    if (log_sw) {
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      std::string str("std::bad_alloc <");
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      str += e.what();
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      str += '>';
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    }
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    throw;
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  } catch (std::exception &e) {
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    tile.getRaster()->unlock();
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    if (log_sw) {
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      std::string str("exception <");
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      str += e.what();
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      str += '>';
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    }
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    throw;
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  } catch (...) {
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    tile.getRaster()->unlock();
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    if (log_sw) {
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      std::string str("other exception");
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    }
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    throw;
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  }
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}