private uint GetPivotPoint(VectorPODRangeAdaptor dataToSort, uint begPoint, uint endPoint) { uint pivot = begPoint; uint m = begPoint + 1; uint n = endPoint; while ((m < endPoint) && dataToSort[pivot] >= dataToSort[m]) { m++; } while ((n > begPoint) && (dataToSort[pivot] <= dataToSort[n])) { n--; } while (m < n) { uint temp = dataToSort[m]; dataToSort[m] = dataToSort[n]; dataToSort[n] = temp; while ((m < endPoint) && (dataToSort[pivot] >= dataToSort[m])) { m++; } while ((n > begPoint) && (dataToSort[pivot] <= dataToSort[n])) { n--; } } if (pivot != n) { uint temp2 = dataToSort[n]; dataToSort[n] = dataToSort[pivot]; dataToSort[pivot] = temp2; } return n; }
public void Sort(VectorPODRangeAdaptor dataToSort) { Sort(dataToSort, 0, (uint)(dataToSort.Size() - 1)); }
public void Sort(VectorPODRangeAdaptor dataToSort, uint beg, uint end) { if (end == beg) { return; } else { uint pivot = GetPivotPoint(dataToSort, beg, end); if (pivot > beg) { Sort(dataToSort, beg, pivot - 1); } if (pivot < end) { Sort(dataToSort, pivot + 1, end); } } }
// Returns the number of styles public uint SweepStyles() { for (; ;) { if (m_scan_y > m_Rasterizer.MaxY) { return(0); } int num_cells = (int)m_Rasterizer.ScanlineNumCells((uint)m_scan_y); CellAA[] cells; uint cellOffset = 0; int curCellOffset; m_Rasterizer.ScanlineCells((uint)m_scan_y, out cells, out cellOffset); uint num_styles = (uint)(m_max_style - m_min_style + 2); uint style_id; int styleOffset = 0; m_cells.Allocate((uint)num_cells * 2, 256); // Each cell can have two styles m_ast.Capacity(num_styles, 64); m_asm.Allocate((num_styles + 7) >> 3, 8); m_asm.Zero(); if (num_cells > 0) { // Pre-add zero (for no-fill style, that is, -1). // We need that to ensure that the "-1 style" would go first. m_asm.Array[0] |= 1; m_ast.Add(0); m_styles.Array[styleOffset].start_cell = 0; m_styles.Array[styleOffset].num_cells = 0; m_styles.Array[styleOffset].last_x = -0x7FFFFFFF; m_sl_start = cells[0].X; m_sl_len = (uint)(cells[num_cells - 1].X - m_sl_start + 1); while (num_cells-- != 0) { curCellOffset = (int)cellOffset++; AddStyle(cells[curCellOffset].Left); AddStyle(cells[curCellOffset].Right); } // Convert the Y-histogram into the array of starting indexes uint i; uint start_cell = 0; StyleInfo[] stylesArray = m_styles.Array; for (i = 0; i < m_ast.Size(); i++) { int IndexToModify = (int)m_ast[i]; uint v = stylesArray[IndexToModify].start_cell; stylesArray[IndexToModify].start_cell = start_cell; start_cell += v; } num_cells = (int)m_Rasterizer.ScanlineNumCells((uint)m_scan_y); m_Rasterizer.ScanlineCells((uint)m_scan_y, out cells, out cellOffset); while (num_cells-- > 0) { curCellOffset = (int)cellOffset++; style_id = (uint)((cells[curCellOffset].Left < 0) ? 0 : cells[curCellOffset].Left - m_min_style + 1); styleOffset = (int)style_id; if (cells[curCellOffset].X == stylesArray[styleOffset].last_x) { cellOffset = stylesArray[styleOffset].start_cell + stylesArray[styleOffset].num_cells - 1; unchecked { cells[cellOffset].Area += cells[curCellOffset].Area; cells[cellOffset].Cover += cells[curCellOffset].Cover; } } else { cellOffset = stylesArray[styleOffset].start_cell + stylesArray[styleOffset].num_cells; cells[cellOffset].X = cells[curCellOffset].X; cells[cellOffset].Area = cells[curCellOffset].Area; cells[cellOffset].Cover = cells[curCellOffset].Cover; stylesArray[styleOffset].last_x = cells[curCellOffset].X; stylesArray[styleOffset].num_cells++; } style_id = (uint)((cells[curCellOffset].Right < 0) ? 0 : cells[curCellOffset].Right - m_min_style + 1); styleOffset = (int)style_id; if (cells[curCellOffset].X == stylesArray[styleOffset].last_x) { cellOffset = stylesArray[styleOffset].start_cell + stylesArray[styleOffset].num_cells - 1; unchecked { cells[cellOffset].Area -= cells[curCellOffset].Area; cells[cellOffset].Cover -= cells[curCellOffset].Cover; } } else { cellOffset = stylesArray[styleOffset].start_cell + stylesArray[styleOffset].num_cells; cells[cellOffset].X = cells[curCellOffset].X; cells[cellOffset].Area = -cells[curCellOffset].Area; cells[cellOffset].Cover = -cells[curCellOffset].Cover; stylesArray[styleOffset].last_x = cells[curCellOffset].X; stylesArray[styleOffset].num_cells++; } } } if (m_ast.Size() > 1) { break; } ++m_scan_y; } ++m_scan_y; if (m_layer_order != LayerOrder.Unsorted) { VectorPODRangeAdaptor ra = new VectorPODRangeAdaptor(m_ast, 1, m_ast.Size() - 1); if (m_layer_order == LayerOrder.Direct) { QuickSortRangeAdaptorUint m_QSorter = new QuickSortRangeAdaptorUint(); m_QSorter.Sort(ra); //quick_sort(ra, uint_greater); } else { throw new System.NotImplementedException(); //QuickSort_range_adaptor_uint m_QSorter = new QuickSort_range_adaptor_uint(); //m_QSorter.Sort(ra); //quick_sort(ra, uint_less); } } return(m_ast.Size() - 1); }