Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
#include "stdfx.h"
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#include "tfxparam.h"
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#include "tparamset.h"
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#include "toonz/tdistort.h"
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//****************************************************************************
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//    Local namespace stuff
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//****************************************************************************
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namespace {
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class KaleidoDistorter : public TDistorter {
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  double m_angle;
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  TAffine m_aff;
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  TPointD m_shift;
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public:
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  KaleidoDistorter(double angle, const TAffine &aff, const TPointD shift)
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      : m_angle(angle), m_aff(aff), m_shift(shift) {}
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  TPointD map(const TPointD &p) const override { return TPointD(); }
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  int maxInvCount() const override { return 1; }
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  int invMap(const TPointD &p, TPointD *results) const override;
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};
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//-------------------------------------------------------------------
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int KaleidoDistorter::invMap(const TPointD &p, TPointD *results) const {
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  TPointD q(m_aff * p);
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  // Build p's angular position
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  double qAngle = atan2(q.y, q.x);
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  if (qAngle < 0.0) qAngle += 2.0 * M_PI;
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  assert(qAngle >= 0.0);
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  int section  = tfloor(qAngle / m_angle);
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  bool reflect = (bool)(section % 2);
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  double normQ = norm(q);
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  if (reflect) {
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    double newAngle = qAngle - (section + 1) * m_angle;
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    results[0].x = normQ * cos(newAngle) + m_shift.x;
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    results[0].y = -normQ * sin(newAngle) + m_shift.y;
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  } else {
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    double newAngle = qAngle - section * m_angle;
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    results[0].x = normQ * cos(newAngle) + m_shift.x;
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    results[0].y = normQ * sin(newAngle) + m_shift.y;
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  }
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  return 1;
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}
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}  // namespace
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//****************************************************************************
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//    Kaleido Fx
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//****************************************************************************
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class KaleidoFx : public TStandardRasterFx {
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  FX_PLUGIN_DECLARATION(KaleidoFx)
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  TRasterFxPort m_input;
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  TPointParamP m_center;
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  TDoubleParamP m_angle;
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  TIntParamP m_count;
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public:
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  KaleidoFx() : m_center(TPointD()), m_angle(0.0), m_count(3) {
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    m_center->getX()->setMeasureName("fxLength");
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    m_center->getY()->setMeasureName("fxLength");
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    m_angle->setMeasureName("angle");
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    bindParam(this, "center", m_center);
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    bindParam(this, "angle", m_angle);
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    bindParam(this, "count", m_count);
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    addInputPort("Source", m_input);
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    m_count->setValueRange(1, 100);
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  }
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  ~KaleidoFx(){};
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  bool doGetBBox(double frame, TRectD &bBox, const TRenderSettings &info) override;
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  void doDryCompute(TRectD &rect, double frame, const TRenderSettings &ri) override;
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  void doCompute(TTile &tile, double frame, const TRenderSettings &ri) override;
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  int getMemoryRequirement(const TRectD &rect, double frame,
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                           const TRenderSettings &info) override;
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  bool canHandle(const TRenderSettings &info, double frame) override {
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    return isAlmostIsotropic(info.m_affine);
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  }
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private:
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  void buildSectionRect(TRectD &inRect, double angle);
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  void rotate(TRectD &rect);
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  TAffine buildInputReference(double frame, TRectD &inRect,
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                              TRenderSettings &inInfo, const TRectD &outRect,
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                              const TRenderSettings &outInfo);
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};
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//-------------------------------------------------------------------
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void KaleidoFx::buildSectionRect(TRectD &inRect, double angle) {
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  inRect.y0 = std::max(inRect.y0, 0.0);
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  if (angle <= M_PI_2) {
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    inRect.x0 = std::max(inRect.x0, 0.0);
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    inRect.y1 = std::min(inRect.y1, inRect.x1 * tan(angle));
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  }
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}
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//-------------------------------------------------------------------
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void KaleidoFx::rotate(TRectD &rect) {
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  TPointD pMax(std::max(-rect.x0, rect.x1), std::max(-rect.y0, rect.y1));
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  double normPMax = norm(pMax);
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  rect = TRectD(-normPMax, -normPMax, normPMax, normPMax);
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}
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//-------------------------------------------------------------------
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TAffine KaleidoFx::buildInputReference(double frame, TRectD &inRect,
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                                       TRenderSettings &inInfo,
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                                       const TRectD &outRect,
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                                       const TRenderSettings &outInfo) {
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  double scale = fabs(sqrt(outInfo.m_affine.det()));
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  double angle = M_PI / m_count->getValue();
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  inInfo.m_affine = TRotation(-m_angle->getValue(frame) - angle) *
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                    TScale(scale).place(m_center->getValue(frame), TPointD());
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  TAffine outRefToInRef(inInfo.m_affine * outInfo.m_affine.inv());
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  // Build the input bounding box
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  TRectD inBBox;
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  m_input->getBBox(frame, inBBox, inInfo);
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  // Rotate the output rect in the input reference. This is required since the
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  // rotational
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  // deformation may rotate points outside the rect, inside it.
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  TRectD outRect_inputRef(outRefToInRef * outRect);
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  rotate(outRect_inputRef);
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  // Intersect with the useful kaleido region
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  inRect = inBBox * outRect_inputRef;
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  buildSectionRect(inRect, angle);
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  return outRefToInRef;
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}
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//-------------------------------------------------------------------
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bool KaleidoFx::doGetBBox(double frame, TRectD &bBox,
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                          const TRenderSettings &info) {
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  // Remember: info.m_affine MUST NOT BE CONSIDERED in doGetBBox's
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  // implementation
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  // Retrieve the input bbox without applied affines.
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  if (!m_input.getFx()) return false;
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  double angle = M_PI / m_count->getValue();
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  TRenderSettings inInfo(info);
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  inInfo.m_affine = TRotation(-m_angle->getValue(frame) - angle) *
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                    TTranslation(-m_center->getValue(frame));
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  if (!m_input->getBBox(frame, bBox, inInfo)) return false;
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  TRectD infiniteRect(TConsts::infiniteRectD);
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  TRectD kaleidoRect((m_count->getValue() > 1) ? 0.0 : infiniteRect.x0, 0.0,
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                     infiniteRect.x1, infiniteRect.y1);
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  bBox *= kaleidoRect;
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  if (bBox.x0 == infiniteRect.x0 || bBox.x1 == infiniteRect.x1 ||
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      bBox.y1 == infiniteRect.y1) {
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    bBox = infiniteRect;
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    return true;
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  }
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  buildSectionRect(bBox, angle);
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  // Now, we must rotate the bBox in order to obtain the kaleidoscoped box
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  rotate(bBox);
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  // Finally, bring it back to standard reference
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  bBox = inInfo.m_affine.inv() * bBox;
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  return true;
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}
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//-------------------------------------------------------------------
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void KaleidoFx::doDryCompute(TRectD &rect, double frame,
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                             const TRenderSettings &info) {
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  if (!m_input.isConnected()) return;
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  if (fabs(info.m_affine.det()) < TConsts::epsilon) return;
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  // Build the input reference
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  TRectD inRect;
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  TRenderSettings inInfo(info);
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  TAffine outRefToInRef(buildInputReference(frame, inRect, inInfo, rect, info));
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  if (inRect.getLx() <= 0.0 || inRect.getLy() <= 0.0) return;
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  inRect = inRect.enlarge(1.0);  // tdistort() seems to need it
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  // Allocate a corresponding input tile and calculate it
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  m_input->dryCompute(inRect, frame, inInfo);
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}
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//-------------------------------------------------------------------
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void KaleidoFx::doCompute(TTile &tile, double frame,
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                          const TRenderSettings &info) {
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  if (!m_input.isConnected()) return;
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  if (fabs(info.m_affine.det()) < TConsts::epsilon) return;
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  // Build the output rect
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  TDimension tileSize(tile.getRaster()->getSize());
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  TRectD tileRect(tile.m_pos, TDimensionD(tileSize.lx, tileSize.ly));
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  // Build the input reference
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  TRectD inRect;
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  TRenderSettings inInfo(info);
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  TAffine outRefToInRef(
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      buildInputReference(frame, inRect, inInfo, tileRect, info));
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  if (inRect.getLx() <= 0.0 || inRect.getLy() <= 0.0) return;
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  inRect = inRect.enlarge(1.0);  // tdistort() seems to need it
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  // Allocate a corresponding input tile and calculate it
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  TTile inTile;
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  TDimension inDim(tceil(inRect.getLx()), tceil(inRect.getLy()));
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  m_input->allocateAndCompute(inTile, inRect.getP00(), inDim, tile.getRaster(),
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                              frame, inInfo);
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  // Now, perform kaleido
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  double angle = M_PI / m_count->getValue();
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  KaleidoDistorter distorter(angle, outRefToInRef, -inRect.getP00());
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  TRasterP inRas(inTile.getRaster());
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  TRasterP tileRas(tile.getRaster());
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  distort(tileRas, inRas, distorter, convert(tile.m_pos));
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}
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//------------------------------------------------------------------
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int KaleidoFx::getMemoryRequirement(const TRectD &rect, double frame,
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                                    const TRenderSettings &info) {
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  if (!m_input.isConnected()) return 0;
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  if (fabs(info.m_affine.det()) < TConsts::epsilon) return 0;
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  // Build the input reference
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  TRectD inRect;
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  TRenderSettings inInfo(info);
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  TAffine outRefToInRef(buildInputReference(frame, inRect, inInfo, rect, info));
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  if (inRect.getLx() <= 0.0 || inRect.getLy() <= 0.0) return 0;
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  inRect = inRect.enlarge(1.0);  // tdistort() seems to need it
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  return TRasterFx::memorySize(inRect, info.m_bpp);
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}
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//------------------------------------------------------------------
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FX_PLUGIN_IDENTIFIER(KaleidoFx, "kaleidoFx");