Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
#include "tcenterlinevectP.h"
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Toshihiro Shimizu 890ddd
// tcg includes
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#include "tcg/tcg_numeric_ops.h"
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// Boost includes
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#include <boost container="" flat_map.hpp=""></boost>
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#include <boost algorithm="" minmax_element.hpp=""></boost>
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namespace boost_c = boost::container;
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//==========================================================================
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//*************************
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//*    Colors handling    *
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//*************************
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// Riassunto: Nel caso di normali raster, i tratti di penna sono colorati con
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// l'elemento della palette data maggiormente tendente al nero.
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// Per le Toonz colormap abilitiamo una gestione piu' complessa, che tiene
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// conto del colore dell'inchiostro specificato direttamente nell'immagine.
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// Nello specifico:
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//  a) I tratti di penna vengono rilevati in base al valore del campo *tone*
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//     di un TPixleCM32, non in base alla luminosita' del colore.
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//     (vv. Poligonizzazione)
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//  b) Sulle centerline grezze viene costruito un insieme di 'punti di assaggio'
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//     dell'immagine; gli id di inchiostro rilevati vengono assegnati
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//     direttamente alla stroke: se si verifica un cambio nell'id del colore,
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//     il punto di cambio del colore viene identificato e la centerline viene
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//     spezzata li'.
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//  c) Una volta identificati i colori delle stroke, le si ordina *prima*
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//     di inserirle nella vector image di output, in base al colore
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//     dell'immagine
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//     ai loro estremi (attualmente ordinamento solo parziale).
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//--------------------------------------------------------------------------
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Campbell Barton b3bd84
static TPixelCM32 pixel(const TRasterCM32 &ras, int x, int y) {
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  // Seems that raster access was not very much double-checked at the time
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  // I wrote this. Too bad. Enforcing it now.
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  return ras.pixels(tcrop(y, 0, ras.getLy() - 1))[tcrop(x, 0, ras.getLx() - 1)];
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}
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//--------------------------------------------------------------------------
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Campbell Barton b3bd84
static T3DPointD firstInkChangePosition(const TRasterCM32P &ras,
shun-iwasawa 27b0cf
                                        const T3DPointD &start,
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                                        const T3DPointD &end, int threshold) {
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  double dist = norm(end - start);
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  int sampleMax = tceil(dist), sampleCount = sampleMax + 1;
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  double sampleMaxD = double(sampleMax);
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  // Get first ink color
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  int s, color = -1;
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  for (s = 0; s != sampleCount; ++s) {
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    T3DPointD p           = tcg::numeric_ops::lerp(start, end, s / sampleMaxD);
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    const TPixelCM32 &pix = pixel(*ras, p.x, p.y);
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    if (pix.getTone() < threshold) {
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      color = pix.getInk();
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      break;
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    }
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  }
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  // Get second color
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  for (; s != sampleCount; ++s) {
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    T3DPointD p           = tcg::numeric_ops::lerp(start, end, s / sampleMaxD);
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    const TPixelCM32 &pix = pixel(*ras, p.x, p.y);
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    if (pix.getTone() < threshold && pix.getInk() != color) break;
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  }
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  // Return middle position between s-1 and s
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  if (s < sampleCount)
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    return tcg::numeric_ops::lerp(start, end, (s - 0.5) / sampleMaxD);
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  return TConsts::nap3d;
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}
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//------------------------------------------------------------------------
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// Find color of input sequence. Will be copied to its equivalent stroke.
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// Currently in use only on colormaps
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// Riassunto: Per saggiare il colore da assegnare alle strokes e' meglio
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// controllare
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// le sequenze *prima* di convertirle in TStroke (visto che si perde parte
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// dell'aderenza originale
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// al tratto). Si specifica un numero di 'punti di assaggio' della spezzata
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// equidistanti tra loro,
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// su cui viene prelevato il valore dell'ink del pixel corrispondente. Se si
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// identifica un cambio
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// di colore, viene lanciata la procedura di spezzamento della sequenza: si
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// identifica il punto
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// di spezzamento, e la sequenza s viene bloccata li'; si costruisce una nuova
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// sequenza newSeq e
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// viene rilanciata sampleColor(ras,newSeq,sOpposite). Le sequenze tra due punti
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// di spezzamento
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// vengono inserite nel vector 'globals->singleSequences'.
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// Nel caso di sequenze circolari c'e' una piccola modifica: il primo punto di
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// spezzamento
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//*ridefinisce solo* il nodo-raccordo di s, senza introdurre nuove sequenze.
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// La sequenza sOpposite, 'inversa' di s, rimane e diventa 'forward-oriented'
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// previo aggiornamento
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// della coda.
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// Osservare che i nodi di spezzamento vengono inseriti con la signature
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// 'SAMPLECOLOR_SIGN'.
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// NOTA: La struttura a grafo J-S 'superiore' non viene alterata qui dentro.
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// Eventualm. da fare fuori.
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static void sampleColor(const TRasterCM32P &ras, int threshold, Sequence &seq,
Campbell Barton b3bd84
                        Sequence &seqOpposite, SequenceList &singleSequences) {
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  SkeletonGraph *currGraph = seq.m_graphHolder;
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  // Calculate sequence parametrization
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  std::vector<unsigned int=""> nodes;</unsigned>
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  std::vector<double> params;</double>
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  // Meanwhile, ensure each point belong to ras. Otherwise, typically an error
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  // occured
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  // in the thinning process and it's better avoid sampling procedure. Only
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  // exception, when
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  // a point has x==ras->getLx() || y==ras->getLy(); that is accepted.
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  {
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    const T3DPointD &headPos = *currGraph->getNode(seq.m_head);
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    if (!ras->getBounds().contains(TPoint(headPos.x, headPos.y))) {
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      if (headPos.x < 0 || ras->getLx() < headPos.x || headPos.y < 0 ||
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          ras->getLy() < headPos.y)
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        return;
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    }
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  }
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  unsigned int curr, currLink, next;
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  double meanThickness = currGraph->getNode(seq.m_head)->z;
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  params.push_back(0);
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  nodes.push_back(seq.m_head);
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  for (curr = seq.m_head, currLink = seq.m_headLink;
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       curr != seq.m_tail || params.size() == 1; seq.next(curr, currLink)) {
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    next = currGraph->getNode(curr).getLink(currLink).getNext();
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    const T3DPointD &nextPos = *currGraph->getNode(next);
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    if (!ras->getBounds().contains(TPoint(nextPos.x, nextPos.y))) {
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      if (nextPos.x < 0 || ras->getLx() < nextPos.x || nextPos.y < 0 ||
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          ras->getLy() < nextPos.y)
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        return;
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    }
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    params.push_back(params.back() + tdistance(*currGraph->getNode(next),
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                                               *currGraph->getNode(curr)));
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    nodes.push_back(next);
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    meanThickness += currGraph->getNode(next)->z;
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  }
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  meanThickness /= params.size();
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  // Exclude 0-length sequences
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  if (params.back() < 0.01) {
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    seq.m_color = pixel(*ras, currGraph->getNode(seq.m_head)->x,
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                        currGraph->getNode(seq.m_head)->y)
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                      .getInk();
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    return;
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  }
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  // Prepare sampling procedure
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  int paramCount = params.size(), paramMax = paramCount - 1;
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  int sampleMax = std::max(params.back() / std::max(meanThickness, 1.0),
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                           3.0),    // Number of color samples depends on
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      sampleCount = sampleMax + 1;  // the ratio params.back() / meanThickness
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  std::vector<double> sampleParams(sampleCount);  // Sampling lengths</double>
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  std::vector<tpoint> samplePoints(</tpoint>
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      sampleCount);  // Image points for color sampling
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  std::vector<int> sampleSegments(</int>
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      sampleCount);  // Sequence segment index for the above
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  // Sample colors
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  for (int s = 0, j = 0; s != sampleCount; ++s) {
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    double samplePar = params.back() * (s / double(sampleMax));
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    while (j != paramMax &&
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           params[j + 1] < samplePar)  // params[j] < samplePar <= params[j+1]
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      ++j;
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    double t = (samplePar - params[j]) / (params[j + 1] - params[j]);
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    T3DPointD samplePoint(*currGraph->getNode(nodes[j]) * (1 - t) +
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                          *currGraph->getNode(nodes[j + 1]) * t);
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    sampleParams[s] = samplePar;
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    samplePoints[s] = TPoint(
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        std::min(samplePoint.x,
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                 double(ras->getLx() - 1)),  // This deals with sample points at
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        std::min(samplePoint.y,
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                 double(ras->getLy() - 1)));  // the top/right raster border
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    sampleSegments[s] = j;
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  }
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  // NOTE: Extremities of a sequence are considered unreliable: they typically
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  // happen
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  //       to be junction points shared between possibly different-colored
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  //       strokes.
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  // Find first and last extremity-free sampled points
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  T3DPointD first(*currGraph->getNode(seq.m_head));
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  T3DPointD last(*currGraph->getNode(seq.m_tail));
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  int i, k;
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  for (i = 1;
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       params.back() * i / double(sampleMax) <= first.z && i < sampleCount; ++i)
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    ;
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  for (k = sampleMax - 1;
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       params.back() * (sampleMax - k) / double(sampleMax) <= last.z && k >= 0;
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       --k)
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    ;
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  // Give s the first sampled ink color found
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  // Initialize with a last-resort reasonable color - not just 0
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  seq.m_color = seqOpposite.m_color =
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      ras->pixels(samplePoints[0].y)[samplePoints[0].x].getInk();
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  int l;
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  for (l = i - 1; l >= 0; --l) {
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    if (ras->pixels(samplePoints[l].y)[samplePoints[l].x].getTone() <
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        threshold) {
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      seq.m_color = seqOpposite.m_color =
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          ras->pixels(samplePoints[l].y)[samplePoints[l].x].getInk();
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      break;
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    }
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  }
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  // Then, look for the first reliable ink
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  for (l = i; l <= k; ++l) {
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    if (ras->pixels(samplePoints[l].y)[samplePoints[l].x].getTone() <
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        threshold) {
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      seq.m_color = seqOpposite.m_color =
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          ras->pixels(samplePoints[l].y)[samplePoints[l].x].getInk();
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      break;
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    }
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  }
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  if (i >= k) goto _getOut;  // No admissible segment found for splitting
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                             // check.
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  // Find color changes between sampled colors
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  for (l = i; l < k; ++l) {
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    const TPixelCM32
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        &nextSample = ras->pixels(samplePoints[l + 1].y)[samplePoints[l + 1].x],
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        &nextSample2 = ras->pixels(
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            samplePoints[l + 2]
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                .y)[samplePoints[l + 2].x];  // l < k < sampleMax - so +2 is ok
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    if (nextSample.getTone() < threshold &&
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        nextSample.getInk() != seq.m_color &&
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        nextSample2.getTone() < threshold &&
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        nextSample2.getInk() ==
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            nextSample.getInk())  // Ignore single-sample color changes
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    {
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      // Found a color change - apply splitting procedure
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      // NOTE: The function RETURNS BEFORE THE FOR IS CONTINUED!
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      int nextColor = nextSample.getInk();
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      // Identify split segment
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      int u;
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      for (u = sampleSegments[l]; u < sampleSegments[l + 1]; ++u) {
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        const TPixelCM32 &pix = pixel(*ras, currGraph->getNode(nodes[u + 1])->x,
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                                      currGraph->getNode(nodes[u + 1])->y);
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        if (pix.getTone() < threshold && pix.getInk() != seq.m_color) break;
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      }
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      // Now u indicates the splitting segment. Search for splitting point by
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      // binary subdivision.
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      const T3DPointD &nodeStartPos = *currGraph->getNode(nodes[u]),
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                      &nodeEndPos   = *currGraph->getNode(nodes[u + 1]);
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      T3DPointD splitPoint =
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          firstInkChangePosition(ras, nodeStartPos, nodeEndPos, threshold);
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      if (splitPoint == TConsts::nap3d)
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        splitPoint = 0.5 * (nodeStartPos +
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                            nodeEndPos);  // A color change was found, but could
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                                          // not be precisely located. Just take
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                                          // a reasonable representant.
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      // Insert a corresponding new node in basic graph structure.
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      unsigned int splitNode = currGraph->newNode(splitPoint);
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      unsigned int nodesLink =
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          currGraph->getNode(nodes[u]).linkOfNode(nodes[u + 1]);
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      currGraph->insert(splitNode, nodes[u], nodesLink);
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      *currGraph->node(splitNode).link(0) =
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          *currGraph->getNode(nodes[u]).getLink(nodesLink);
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      nodesLink = currGraph->getNode(nodes[u + 1]).linkOfNode(nodes[u]);
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      currGraph->insert(splitNode, nodes[u + 1], nodesLink);
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      *currGraph->node(splitNode).link(1) =
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          *currGraph->getNode(nodes[u + 1]).getLink(nodesLink);
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      currGraph->node(splitNode).setAttribute(
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          SAMPLECOLOR_SIGN);  // Sign all split-inserted nodes
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      if (seq.m_head == seq.m_tail &&
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          currGraph->getNode(seq.m_head).getLinksCount() == 2 &&
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          !currGraph->getNode(seq.m_head).hasAttribute(SAMPLECOLOR_SIGN)) {
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        // Circular case: we update s to splitNode and relaunch this very
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        // procedure on it.
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        seq.m_head = seq.m_tail = splitNode;
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        sampleColor(ras, threshold, seq, seqOpposite, singleSequences);
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      } else {
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        // Update upper (Joint-Sequence) graph data
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        Sequence newSeq;
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        newSeq.m_graphHolder = currGraph;
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        newSeq.m_head        = splitNode;
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        newSeq.m_headLink    = 0;
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        newSeq.m_tail        = seq.m_tail;
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        newSeq.m_tailLink    = seq.m_tailLink;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        seq.m_tail     = splitNode;
Shinya Kitaoka 120a6e
        seq.m_tailLink = 1;  // (link from splitNode to nodes[u] inserted for
Shinya Kitaoka 120a6e
                             // second by 'insert')
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        seqOpposite.m_graphHolder =
Shinya Kitaoka 120a6e
            seq.m_graphHolder;  // Inform that a split was found
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        // NOTE: access on s terminates at newSeq's push_back, due to possible
Shinya Kitaoka 120a6e
        // reallocation of globals->singleSequences
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        if ((!(seq.m_head == newSeq.m_tail &&
Shinya Kitaoka 120a6e
               currGraph->getNode(seq.m_head).getLinksCount() == 2)) &&
Shinya Kitaoka 120a6e
            currGraph->getNode(seq.m_head).hasAttribute(SAMPLECOLOR_SIGN))
Shinya Kitaoka 120a6e
          singleSequences.push_back(seq);
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        sampleColor(ras, threshold, newSeq, seqOpposite, singleSequences);
Shinya Kitaoka 120a6e
      }
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
      return;
Shinya Kitaoka 120a6e
    }
Shinya Kitaoka 120a6e
  }
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
_getOut:
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  // Color changes not found (and therefore no newSeq got pushed back); if a
Shinya Kitaoka 120a6e
  // split happened, update sOpposite.
Shinya Kitaoka 120a6e
  if (currGraph->getNode(seq.m_head).hasAttribute(SAMPLECOLOR_SIGN)) {
Shinya Kitaoka 120a6e
    seqOpposite.m_color    = seq.m_color;
Shinya Kitaoka 120a6e
    seqOpposite.m_head     = seq.m_tail;
Shinya Kitaoka 120a6e
    seqOpposite.m_headLink = seq.m_tailLink;
Shinya Kitaoka 120a6e
    seqOpposite.m_tail     = seq.m_head;
Shinya Kitaoka 120a6e
    seqOpposite.m_tailLink = seq.m_headLink;
Shinya Kitaoka 120a6e
  }
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//--------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
// Take samples of image colors to associate each sequence to its corresponding
Shinya Kitaoka 120a6e
// palette color. Currently working on colormaps.
Shinya Kitaoka 120a6e
// void calculateSequenceColors(const TRasterP &ras)
Shinya Kitaoka 120a6e
void calculateSequenceColors(const TRasterP &ras, VectorizerCoreGlobals &g) {
Shinya Kitaoka 120a6e
  int threshold                           = g.currConfig->m_threshold;
Shinya Kitaoka 120a6e
  SequenceList &singleSequences           = g.singleSequences;
Shinya Kitaoka 120a6e
  JointSequenceGraphList &organizedGraphs = g.organizedGraphs;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  TRasterCM32P cm = ras;
Shinya Kitaoka 120a6e
  unsigned int i, j, k;
Shinya Kitaoka 120a6e
  int l;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  if (cm && g.currConfig->m_maxThickness > 0.0) {
Shinya Kitaoka 120a6e
    // singleSequence is traversed back-to-front because new, possibly splitted
Shinya Kitaoka 120a6e
    // sequences
Shinya Kitaoka 120a6e
    // are inserted at back - and don't have to be re-sampled.
Shinya Kitaoka 120a6e
    for (l = singleSequences.size() - 1; l >= 0; --l) {
Shinya Kitaoka 120a6e
      Sequence rear;
Shinya Kitaoka 120a6e
      sampleColor(ras, threshold, singleSequences[l], rear, singleSequences);
Shinya Kitaoka 120a6e
      // If rear is built, a split occurred and the rear of this
Shinya Kitaoka 120a6e
      // single sequence has to be pushed back.
Shinya Kitaoka 120a6e
      if (rear.m_graphHolder) singleSequences.push_back(rear);
Shinya Kitaoka 120a6e
    }
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
    for (i = 0; i < organizedGraphs.size(); ++i)
Shinya Kitaoka 120a6e
      for (j = 0; j < organizedGraphs[i].getNodesCount(); ++j)
Shinya Kitaoka 120a6e
        if (!organizedGraphs[i].getNode(j).hasAttribute(
Shinya Kitaoka 120a6e
                JointSequenceGraph::ELIMINATED))  // due to junction recovery
Shinya Kitaoka 120a6e
          for (k = 0; k < organizedGraphs[i].getNode(j).getLinksCount(); ++k) {
Shinya Kitaoka 120a6e
            Sequence &s = *organizedGraphs[i].node(j).link(k);
Shinya Kitaoka 120a6e
            if (s.isForward() &&
Shinya Kitaoka 120a6e
                !s.m_graphHolder->getNode(s.m_tail).hasAttribute(
Shinya Kitaoka 120a6e
                    SAMPLECOLOR_SIGN)) {
Shinya Kitaoka 120a6e
              unsigned int next = organizedGraphs[i].node(j).link(k).getNext();
Shinya Kitaoka 120a6e
              unsigned int nextLink = organizedGraphs[i].tailLinkOf(j, k);
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
              Sequence &sOpposite =
Shinya Kitaoka 120a6e
                  *organizedGraphs[i].node(next).link(nextLink);
Shinya Kitaoka 120a6e
              sampleColor(cm, threshold, s, sOpposite, singleSequences);
Shinya Kitaoka 120a6e
            }
Shinya Kitaoka 120a6e
          }
Shinya Kitaoka 120a6e
  }
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//==========================================================================
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
inline void applyStrokeIndices(VectorizerCoreGlobals *globals) {
Shinya Kitaoka 120a6e
  unsigned int i, j, k, n;
Shinya Kitaoka 120a6e
  unsigned int next, nextLink;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  for (i = 0; i < globals->singleSequences.size(); ++i)
Shinya Kitaoka 120a6e
    globals->singleSequences[i].m_strokeIndex = i;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  n = i;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  for (i = 0; i < globals->organizedGraphs.size(); ++i) {
Shinya Kitaoka 120a6e
    JointSequenceGraph *currJSGraph = &globals->organizedGraphs[i];
Shinya Kitaoka 120a6e
    for (j = 0; j < currJSGraph->getNodesCount(); ++j)
Shinya Kitaoka 120a6e
      if (!currJSGraph->getNode(j).hasAttribute(JointSequenceGraph::ELIMINATED))
Shinya Kitaoka 120a6e
        for (k = 0; k < currJSGraph->getNode(j).getLinksCount(); ++k) {
Shinya Kitaoka 120a6e
          Sequence &s = *currJSGraph->node(j).link(k);
Shinya Kitaoka 120a6e
          if (s.isForward()) {
Shinya Kitaoka 120a6e
            s.m_strokeIndex = n;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
            if (!s.m_graphHolder->getNode(s.m_tail).hasAttribute(
Shinya Kitaoka 120a6e
                    SAMPLECOLOR_SIGN)) {
Shinya Kitaoka 120a6e
              next     = currJSGraph->getNode(j).getLink(k).getNext();
Shinya Kitaoka 120a6e
              nextLink = currJSGraph->tailLinkOf(j, k);
Shinya Kitaoka 120a6e
              currJSGraph->node(next).link(nextLink)->m_strokeIndex = n;
Shinya Kitaoka 120a6e
            }
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
            ++n;
Shinya Kitaoka 120a6e
          }
Shinya Kitaoka 120a6e
        }
Shinya Kitaoka 120a6e
  }
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//==========================================================================
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
// Riassunto: Dato un grafo superiore, possiamo associare ad ogni nodo il colore
Shinya Kitaoka 120a6e
// del pixel associato a quel punto; se una sequenza e' nascosta, ha entrambi
Toshihiro Shimizu 890ddd
// i nodi agli estremi di colore diverso, viceversa per sequenze esposte.
Shinya Kitaoka 120a6e
// Data una sequenza, a partire dai nodi superiori adiacenti possiamo stabilire
Shinya Kitaoka 120a6e
// un
Shinya Kitaoka 120a6e
// insieme di sequenze che gli stanno sotto, ed uno di seq. che gli stanno
Shinya Kitaoka 120a6e
// sopra.
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
// NOTA: Questo problema e' un caso particolare di 'graph labeling', di cui non
Shinya Kitaoka 120a6e
// ho ancora trovato soluzione. In rete qualcosa si trova...
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
// La seguente funzione fa qualcosa di piu' debole: ad ogni joint ed ogni
Shinya Kitaoka 120a6e
// Sequence
Shinya Kitaoka 120a6e
// viene assegnata una altezza (intero). Dato un Joint, le sequenze che lo hanno
Shinya Kitaoka 120a6e
// per estremo e che hanno lo stesso colore dell'immagine in quella posizione
Shinya Kitaoka 120a6e
// hanno
Shinya Kitaoka 120a6e
// un'altezza +1 rispetto al giunto, e viceversa altezza -1. Partendo da
Shinya Kitaoka 120a6e
// un giunto iniziale, quest'informazione viene propagata sul grafo; il problema
Shinya Kitaoka 120a6e
// sta ritornando ai giunti gia' percorsi...
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//--------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
// Find predominant ink color in a circle of given radius and center
shun-iwasawa 27b0cf
static int getInkPredominance(const TRasterCM32P &ras, TPalette *palette, int x,
shun-iwasawa 27b0cf
                              int y, int radius, int threshold) {
Shinya Kitaoka 120a6e
  int i, j;
Shinya Kitaoka 120a6e
  int mx, my, Mx, My;
Shinya Kitaoka 120a6e
  std::vector<int> inksFound(palette->getStyleCount());</int>
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  radius = std::min(
Shinya Kitaoka 120a6e
      radius, 7);  // Restrict radius for a minimum significative neighbour
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  mx = std::max(x - radius, 0);
Shinya Kitaoka 120a6e
  my = std::max(y - radius, 0);
Shinya Kitaoka 120a6e
  Mx = std::min(x + radius, ras->getLx() - 1);
Shinya Kitaoka 120a6e
  My = std::min(y + radius, ras->getLy() - 1);
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  // Check square grid around (x,y)
Shinya Kitaoka 120a6e
  for (i = mx; i <= Mx; ++i)
Shinya Kitaoka 120a6e
    for (j = my; j <= My; ++j)
Shinya Kitaoka 120a6e
      if (sq(i) + sq(j) <= sq(radius) &&
Shinya Kitaoka 120a6e
          ras->pixels(j)[i].getTone() < threshold) {
Shinya Kitaoka 120a6e
        // Update color table
Shinya Kitaoka 120a6e
        inksFound[ras->pixels(j)[i].getInk()] +=
Shinya Kitaoka 120a6e
            255 - ras->pixels(j)[i].getTone();
Shinya Kitaoka 120a6e
      }
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  // return the most found ink
Shinya Kitaoka 120a6e
  int maxCount = 0, mostFound = 0;
Shinya Kitaoka 120a6e
  for (i = 0; i < (int)inksFound.size(); ++i)
Shinya Kitaoka 120a6e
    if (inksFound[i] > maxCount) {
Shinya Kitaoka 120a6e
      maxCount  = inksFound[i];
Shinya Kitaoka 120a6e
      mostFound = i;
Shinya Kitaoka 120a6e
    }
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  return mostFound;
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//--------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
/*!
Toshihiro Shimizu 890ddd
  \brief    Find the predominant color in sequences adjacent to the
Toshihiro Shimizu 890ddd
            input graph node.
Toshihiro Shimizu 890ddd
  \return   The predominant branch color if found, \p -1 otherwise.
Toshihiro Shimizu 890ddd
*/
Campbell Barton b3bd84
static int getBranchPredominance(const TRasterCM32P &ras, TPalette *palette,
Campbell Barton b3bd84
                                 JointSequenceGraph::Node &node) {
Shinya Kitaoka 120a6e
  struct locals {
Shinya Kitaoka 120a6e
    static inline bool valueLess(const std::pair<int, int=""> &a,</int,>
Shinya Kitaoka 120a6e
                                 const std::pair<int, int=""> &b) {</int,>
Shinya Kitaoka 120a6e
      return (a.second < b.second);
Shinya Kitaoka 120a6e
    }
Shinya Kitaoka 120a6e
  };
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  boost_c::flat_map<int, int=""> branchInksHistogram;</int,>
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  UINT l, lCount = node.getLinksCount();
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  for (l = 0; l != lCount; ++l) {
Shinya Kitaoka 120a6e
    int color = node.getLink(l)->m_color;
Shinya Kitaoka 120a6e
    if (color >= 0 && color <= palette->getStyleCount())
Shinya Kitaoka 120a6e
      ++branchInksHistogram[color];
Shinya Kitaoka 120a6e
  }
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  // Return the most found ink, or -1 if a predominance color could not be found
Shinya Kitaoka 120a6e
  if (branchInksHistogram.empty()) return -1;
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  typedef boost_c::flat_map<int, int="">::iterator histo_it;</int,>
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  const std::pair<histo_it, histo_it=""> &histoRange =</histo_it,>
Shinya Kitaoka 120a6e
      boost::minmax_element(branchInksHistogram.begin(),
Shinya Kitaoka 120a6e
                            branchInksHistogram.end(), locals::valueLess);
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  return (histoRange.first->second == histoRange.second->second)
Shinya Kitaoka 120a6e
             ? -1
Shinya Kitaoka 120a6e
             : histoRange.second->first;
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//--------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
// NOTA: Da implementare una versione in grado di ordinare *pienamente* la
Shinya Kitaoka 120a6e
// vector image.
Campbell Barton b3bd84
static void sortJS(JointSequenceGraph *js,
Campbell Barton b3bd84
                   std::vector<std::pair<int, *="" tstroke="">> &toOrder,</std::pair<int,>
Campbell Barton b3bd84
                   const TRasterCM32P &ras, TPalette *palette) {
Shinya Kitaoka 120a6e
  enum { SORTED = 0x10 };
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  std::vector<std::pair<unsigned int="" int,="">> nodesToDo;</std::pair<unsigned>
Shinya Kitaoka 120a6e
  unsigned int currNodeIdx, nextNodeIdx;
Shinya Kitaoka 120a6e
  int currColor, currHeight, nextColor, nextHeight;
Shinya Kitaoka 120a6e
  T3DPointD pD;
Shinya Kitaoka 120a6e
  TPoint p;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  SkeletonGraph *currGraph = js->getNode(0).getLink(0)->m_graphHolder;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
  unsigned int n, nCount = js->getNodesCount();
Shinya Kitaoka 120a6e
  for (n = 0; n != nCount; ++n) {
Shinya Kitaoka 120a6e
    // Get the first non-ELIMINATED and non-already treated JS node
Shinya Kitaoka 120a6e
    if (!js->getNode(n).hasAttribute(JointSequenceGraph::ELIMINATED | SORTED)) {
Shinya Kitaoka 120a6e
      nodesToDo.push_back(std::make_pair(n, 0));
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
      while (!nodesToDo.empty()) {
Shinya Kitaoka 120a6e
        currNodeIdx = nodesToDo.back().first;
Shinya Kitaoka 120a6e
        currHeight  = nodesToDo.back().second;
Shinya Kitaoka 120a6e
        nodesToDo.pop_back();
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        JointSequenceGraph::Node &currNode = js->node(currNodeIdx);
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        // Sign current node
Shinya Kitaoka 120a6e
        currNode.setAttribute(SORTED);
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        // Initialize this node infos
Shinya Kitaoka 120a6e
        pD = *currGraph->getNode(currNode.getLink(0)->m_head);
Shinya Kitaoka 120a6e
        p  = TPoint(pD.x, pD.y);
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        if (!ras->getBounds().contains(p)) continue;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        // currColor = getInkPredominance(ras, palette, p.x, p.y, (int) pD.z);
Shinya Kitaoka 120a6e
        // //ras->pixels(p.y)[p.x].getInk();
Shinya Kitaoka 120a6e
        currColor = getBranchPredominance(ras, palette, currNode);
Shinya Kitaoka 120a6e
        if (currColor < 0) currColor = ras->pixels(p.y)[p.x].getInk();
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
        int l, lCount = currNode.getLinksCount();
Shinya Kitaoka 120a6e
        for (l = 0; l != lCount; ++l) {
Shinya Kitaoka 120a6e
          nextNodeIdx = currNode.getLink(l).getNext();
Shinya Kitaoka 120a6e
          Sequence &s = *currNode.link(l);
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
          // Check if outgoing sequence has current color (front) or not (back)
Shinya Kitaoka 120a6e
          toOrder[s.m_strokeIndex].first =
Shinya Kitaoka 120a6e
              (s.m_color == currColor) ? currHeight : currHeight - 1;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
          if (!(currNode.getLink(l).getAccess() == SORTED)) {
Shinya Kitaoka 120a6e
            // Deal with this unchecked branch
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
            // If sequence was not split (due to color change)
Shinya Kitaoka 120a6e
            if (!currGraph->getNode(s.m_tail).hasAttribute(SAMPLECOLOR_SIGN)) {
Shinya Kitaoka 120a6e
              JointSequenceGraph::Node &nextNode = js->node(nextNodeIdx);
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
              // Then check nextNode
Shinya Kitaoka 120a6e
              pD = *currGraph->getNode(nextNode.getLink(0)->m_head);
Shinya Kitaoka 120a6e
              p  = TPoint(pD.x, pD.y);
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
              if (!ras->getBounds().contains(p)) continue;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
              // If nextNode was not already inserted in ToDo vector, do it now.
Shinya Kitaoka 120a6e
              if (!nextNode.hasAttribute(SORTED)) {
Shinya Kitaoka 120a6e
                // nextColor = getInkPredominance(ras, palette, p.x, p.y, (int)
Shinya Kitaoka 120a6e
                // pD.z);
Shinya Kitaoka 120a6e
                nextColor = getBranchPredominance(ras, palette, nextNode);
Shinya Kitaoka 120a6e
                if (nextColor < 0) nextColor = ras->pixels(p.y)[p.x].getInk();
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
                nextHeight = (s.m_color == nextColor)
Shinya Kitaoka 120a6e
                                 ? toOrder[s.m_strokeIndex].first
Shinya Kitaoka 120a6e
                                 : toOrder[s.m_strokeIndex].first + 1;
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
                nodesToDo.push_back(std::make_pair(nextNodeIdx, nextHeight));
Shinya Kitaoka 120a6e
              }
Shinya Kitaoka 120a6e
Shinya Kitaoka 120a6e
              // Deny access to its inverse (already processed now)
Shinya Kitaoka 120a6e
              nextNode.link(js->tailLinkOf(currNodeIdx, l)).setAccess(SORTED);
Shinya Kitaoka 120a6e
            }
Shinya Kitaoka 120a6e
          }
Shinya Kitaoka 120a6e
        }
Shinya Kitaoka 120a6e
      }
Shinya Kitaoka 120a6e
    }
Shinya Kitaoka 120a6e
  }
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//--------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
inline void orderColoredStrokes(JointSequenceGraphList &organizedGraphs,
Shinya Kitaoka 120a6e
                                std::vector<tstroke *=""> &strokes,</tstroke>
Shinya Kitaoka 120a6e
                                const TRasterCM32P &ras, TPalette *palette) {
Shinya Kitaoka 120a6e
  // Initialize ordering
Shinya Kitaoka 120a6e
  std::vector<std::pair<int, *="" tstroke="">> strokesByHeight(</std::pair<int,>
Shinya Kitaoka 120a6e
      strokes.size(),
Shinya Kitaoka 120a6e
      std::make_pair(-(std::numeric_limits<int>::max)(), (TStroke *)0));</int>
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  size_t s, sCount = strokes.size();
Shinya Kitaoka 120a6e
  for (s = 0; s != sCount; ++s) strokesByHeight[s].second = strokes[s];
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  size_t og, ogCount = organizedGraphs.size();
Shinya Kitaoka 120a6e
  for (og = 0; og != ogCount; ++og)
Shinya Kitaoka 120a6e
    sortJS(&organizedGraphs[og], strokesByHeight, ras, palette);
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  // Now, we have the order vector filled, apply sorting algorithm.
Shinya Kitaoka 120a6e
  std::sort(strokesByHeight.begin(), strokesByHeight.end());
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
  for (s = 0; s != sCount; ++s) strokes[s] = strokesByHeight[s].second;
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
//==========================================================================
Toshihiro Shimizu 890ddd
Shinya Kitaoka 120a6e
// Take samples of image colors to associate each stroke to its corresponding
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// palette color. Currently working on colormaps, closest-to-black strokes
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// otherwise.
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void applyStrokeColors(std::vector<tstroke *=""> &strokes, const TRasterP &ras,</tstroke>
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                       TPalette *palette, VectorizerCoreGlobals &g) {
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  JointSequenceGraphList &organizedGraphs = g.organizedGraphs;
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  SequenceList &singleSequences           = g.singleSequences;
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  TRasterCM32P cm = ras;
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  unsigned int i, j, k, n;
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  if (cm && g.currConfig->m_maxThickness > 0.0) {
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    applyStrokeIndices(&g);
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    // Treat single sequences before, like conversionToStrokes(..)
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    for (i = 0; i < singleSequences.size(); ++i)
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      strokes[i]->setStyle(singleSequences[i].m_color);
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    // Then, treat remaining graph-strokes
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    n = i;
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    for (i = 0; i < organizedGraphs.size(); ++i)
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      for (j = 0; j < organizedGraphs[i].getNodesCount(); ++j)
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        if (!organizedGraphs[i].getNode(j).hasAttribute(
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                JointSequenceGraph::ELIMINATED))  // due to junction recovery
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          for (k = 0; k < organizedGraphs[i].getNode(j).getLinksCount(); ++k) {
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            Sequence &s = *organizedGraphs[i].node(j).link(k);
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            if (s.isForward()) {
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              // vi->getStroke(n)->setStyle(s.m_color);
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              strokes[n]->setStyle(s.m_color);
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              ++n;
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            }
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          }
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    // Order vector image according to actual color-coverings at junctions.
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    orderColoredStrokes(organizedGraphs, strokes, cm, palette);
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  } else {
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    // Choose closest-to-black palette color
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    int blackStyleId = palette->getClosestStyle(TPixel32::Black);
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    unsigned int i;
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    for (i = 0; i < strokes.size(); ++i) strokes[i]->setStyle(blackStyleId);
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  }
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}