drawtord.cpp

来自「一个google的OCR源码」· C++ 代码 · 共 469 行 · 第 1/2 页

	to_win->Pen(colour);
      }
    }
  to_win->DrawTo(fleft + occupation[line_index - min_y] / 10.0,      (float) line_index);
  }
  colour=ScrollView::STEEL_BLUE;
  to_win->Pen(colour);
  to_win->SetCursor(fleft, (float) ybottom);
  for (line_index = min_y; line_index <= max_y; line_index++) {
     to_win->DrawTo(fleft + thresholds[line_index - min_y] / 10.0,      (float) line_index);
  }
}


/**********************************************************************
 * draw_meanlines
 *
 * Draw the meanlines of the given block in the given colour.
 **********************************************************************/

void draw_meanlines(                  //draw a block
                    TO_BLOCK *block,  //block to draw
                    float gradient,   //gradients of lines
                    inT32 left,       //edge of block
                    ScrollView::Color colour,    //colour to draw in
                    FCOORD rotation   //rotation for line
                   ) {
  FCOORD plot_pt;                //point to plot
                                 //rows
  TO_ROW_IT row_it = block->get_rows ();
  TO_ROW *row;                   //current row
  BLOBNBOX_IT blob_it;           //blobs
  float right;                   //end of row
  to_win->Pen(colour);
  for (row_it.mark_cycle_pt (); !row_it.cycled_list (); row_it.forward ()) {
    row = row_it.data ();
    blob_it.set_to_list (row->blob_list ());
    blob_it.move_to_last ();
    right = blob_it.data ()->bounding_box ().right ();
    plot_pt =
      FCOORD ((float) left,
      gradient * left + row->parallel_c () + row->xheight);
    plot_pt.rotate (rotation);
  to_win->SetCursor(plot_pt.x (), plot_pt.y ());
    plot_pt =
      FCOORD ((float) right,
      gradient * right + row->parallel_c () + row->xheight);
    plot_pt.rotate (rotation);
    to_win->DrawTo (plot_pt.x (), plot_pt.y ());
  }
}


/**********************************************************************
 * plot_word_decisions
 *
 * Plot a row with words in different colours and fuzzy spaces
 * highlighted.
 **********************************************************************/

void plot_word_decisions(              //draw words
                         ScrollView* win,   //window tro draw in
                         inT16 pitch,  //of block
                         TO_ROW *row   //row to draw
                        ) {
  ScrollView::Color colour = ScrollView::MAGENTA;       //current colour
  ScrollView::Color rect_colour;            //fuzzy colour
  inT32 prev_x;                  //end of prev blob
  inT16 blob_count;              //blobs in word
  BLOBNBOX *blob;                //current blob
  TBOX blob_box;                  //bounding box
                                 //iterator
  BLOBNBOX_IT blob_it = row->blob_list ();
  BLOBNBOX_IT start_it = blob_it;//word start

  rect_colour = ScrollView::BLACK;
  prev_x = -MAX_INT16;
  blob_count = 0;
  for (blob_it.mark_cycle_pt (); !blob_it.cycled_list (); blob_it.forward ()) {
    blob = blob_it.data ();
    blob_box = blob->bounding_box ();
    if (!blob->joined_to_prev ()
    && blob_box.left () - prev_x > row->max_nonspace) {
      if ((blob_box.left () - prev_x >= row->min_space
        || blob_box.left () - prev_x > row->space_threshold)
      && blob_count > 0) {
        if (pitch > 0 && textord_show_fixed_cuts)
          plot_fp_cells (win, colour, &start_it, pitch, blob_count,
            &row->projection, row->projection_left,
            row->projection_right,
            row->xheight * textord_projection_scale);
        blob_count = 0;
        start_it = blob_it;
      }
      if (colour == ScrollView::MAGENTA)
        colour = ScrollView::RED;
      else
        colour = (ScrollView::Color) (colour + 1);
      if (blob_box.left () - prev_x < row->min_space) {
        if (blob_box.left () - prev_x > row->space_threshold)
          rect_colour = ScrollView::GOLDENROD;
        else
          rect_colour = ScrollView::CORAL;
        //fill_color_index(win, rect_colour);
        win->Brush(rect_colour);
        win->Rectangle (prev_x, blob_box.bottom (),
          blob_box.left (), blob_box.top ());
      }
    }
    if (!blob->joined_to_prev ())
      prev_x = blob_box.right ();
    if (blob->blob () != NULL)
                                 //draw it
      blob->blob ()->plot (win, colour, colour);
    if (blob->cblob () != NULL)
      blob->cblob ()->plot (win, colour, colour);
    if (!blob->joined_to_prev ()
      && (blob->blob () != NULL || blob->cblob () != NULL))
      blob_count++;
  }
  if (pitch > 0 && textord_show_fixed_cuts && blob_count > 0)
    plot_fp_cells (win, colour, &start_it, pitch, blob_count,
      &row->projection, row->projection_left,
      row->projection_right,
      row->xheight * textord_projection_scale);
}


/**********************************************************************
 * plot_fp_cells
 *
 * Make a list of fixed pitch cuts and draw them.
 **********************************************************************/

void plot_fp_cells(                        //draw words
                   ScrollView* win,             //window tro draw in
                   ScrollView::Color colour,          //colour of lines
                   BLOBNBOX_IT *blob_it,   //blobs
                   inT16 pitch,            //of block
                   inT16 blob_count,       //no of real blobs
                   STATS *projection,      //vertical
                   inT16 projection_left,  //edges //scale factor
                   inT16 projection_right,
                   float projection_scale) {
  inT16 occupation;              //occupied cells
  TBOX word_box;                  //bounding box
  FPSEGPT_LIST seg_list;         //list of cuts
  FPSEGPT_IT seg_it;
  FPSEGPT *segpt;                //current point

  if (pitsync_linear_version)
    check_pitch_sync2 (blob_it, blob_count, pitch, 2, projection,
      projection_left, projection_right,
      projection_scale, occupation, &seg_list, 0, 0);
  else
    check_pitch_sync (blob_it, blob_count, pitch, 2, projection, &seg_list);
  word_box = blob_it->data ()->bounding_box ();
  for (; blob_count > 0; blob_count--)
    word_box += box_next (blob_it);
  seg_it.set_to_list (&seg_list);
  for (seg_it.mark_cycle_pt (); !seg_it.cycled_list (); seg_it.forward ()) {
    segpt = seg_it.data ();
    if (segpt->faked) {
         colour = ScrollView::WHITE;
         win->Pen(colour);  }
    else {
      win->Pen(colour); }
    win->Line(segpt->position (), word_box.bottom (),segpt->position (), word_box.top ());
  }
}


/**********************************************************************
 * plot_fp_cells2
 *
 * Make a list of fixed pitch cuts and draw them.
 **********************************************************************/

void plot_fp_cells2(                        //draw words
                    ScrollView* win,             //window tro draw in
                    ScrollView::Color colour,          //colour of lines
                    TO_ROW *row,            //for location
                    FPSEGPT_LIST *seg_list  //segments to plot
                   ) {
  TBOX word_box;                  //bounding box
  FPSEGPT_IT seg_it = seg_list;
                                 //blobs in row
  BLOBNBOX_IT blob_it = row->blob_list ();
  FPSEGPT *segpt;                //current point

  word_box = blob_it.data ()->bounding_box ();
  for (blob_it.mark_cycle_pt (); !blob_it.cycled_list ();)
    word_box += box_next (&blob_it);
  for (seg_it.mark_cycle_pt (); !seg_it.cycled_list (); seg_it.forward ()) {
    segpt = seg_it.data ();
    if (segpt->faked) {
         colour = ScrollView::WHITE;
         win->Pen(colour); }
    else {
     win->Pen(colour); }
     win->Line(segpt->position (), word_box.bottom (),segpt->position (), word_box.top ());
  }
}


/**********************************************************************
 * plot_row_cells
 *
 * Make a list of fixed pitch cuts and draw them.
 **********************************************************************/

void plot_row_cells(                       //draw words
                    ScrollView* win,            //window tro draw in
                    ScrollView::Color colour,         //colour of lines
                    TO_ROW *row,           //for location
                    float xshift,          //amount of shift
                    ICOORDELT_LIST *cells  //cells to draw
                   ) {
  TBOX word_box;                  //bounding box
  ICOORDELT_IT cell_it = cells;
                                 //blobs in row
  BLOBNBOX_IT blob_it = row->blob_list ();
  ICOORDELT *cell;               //current cell

  word_box = blob_it.data ()->bounding_box ();
  for (blob_it.mark_cycle_pt (); !blob_it.cycled_list ();)
    word_box += box_next (&blob_it);
  win->Pen(colour);
  for (cell_it.mark_cycle_pt (); !cell_it.cycled_list (); cell_it.forward ()) {
    cell = cell_it.data ();
    win->Line(cell->x () + xshift, word_box.bottom (), cell->x () + xshift, word_box.top ());
  }
}