public abstract AddCell ( int x, int cover ) : void | ||
x | int | |
cover | int | |
Результат | void |
//-------------------------------------------------------------------- internal bool SweepScanline(Scanline scline) { for (;;) { if (m_scan_y > m_cellAARas.MaxY) { return(false); } scline.ResetSpans(); CellAA[] cells; int offset; int num_cells; m_cellAARas.GetCells(m_scan_y, out cells, out offset, out num_cells); int cover = 0; while (num_cells != 0) { unsafe { fixed(CellAA *cur_cell_h = &cells[0]) { CellAA *cur_cell_ptr = cur_cell_h + offset; int alpha; int x = cur_cell_ptr->x; int area = cur_cell_ptr->area; cover += cur_cell_ptr->cover; //accumulate all cells with the same X while (--num_cells != 0) { offset++; //move next cur_cell_ptr++; //move next if (cur_cell_ptr->x != x) { break; } area += cur_cell_ptr->area; cover += cur_cell_ptr->cover; } if (area != 0) { alpha = CalculateAlpha((cover << (poly_subpix.SHIFT + 1)) - area); if (alpha != 0) { scline.AddCell(x, alpha); } x++; } if ((num_cells != 0) && (cur_cell_ptr->x > x)) { alpha = CalculateAlpha(cover << (poly_subpix.SHIFT + 1)); if (alpha != 0) { scline.AddSpan(x, (cur_cell_ptr->x - x), alpha); } } } //CellAA cur_cell = cells[offset]; //int x = cur_cell.x; //int area = cur_cell.area; //int alpha; //cover += cur_cell.cover; ////accumulate all cells with the same X //while (--num_cells != 0) //{ // offset++; // cur_cell = cells[offset]; // if (cur_cell.x != x) // { // break; // } // area += cur_cell.area; // cover += cur_cell.cover; //} //if (area != 0) //{ // alpha = CalculateAlpha((cover << (poly_subpix.SHIFT + 1)) - area); // if (alpha != 0) // { // scline.AddCell(x, alpha); // } // x++; //} //if ((num_cells != 0) && (cur_cell.x > x)) //{ // alpha = CalculateAlpha(cover << (poly_subpix.SHIFT + 1)); // if (alpha != 0) // { // scline.AddSpan(x, (cur_cell.x - x), alpha); // } //} } } if (scline.SpanCount != 0) { break; } ++m_scan_y; } scline.CloseLine(m_scan_y); ++m_scan_y; return(true); }
//-------------------------------------------------------------------- internal bool SweepScanline(Scanline scline) { for (;;) { if (m_scan_y > m_cellAARas.MaxY) { return(false); } scline.ResetSpans(); //------------------------- CellAA[] cells; int offset; int num_cells; m_cellAARas.GetCells(m_scan_y, out cells, out offset, out num_cells); int cover = 0; while (num_cells != 0) { unsafe { fixed(CellAA *cur_cell_h = &cells[0]) { CellAA *cur_cell_ptr = cur_cell_h + offset; int x = cur_cell_ptr->x; int area = cur_cell_ptr->area; cover += cur_cell_ptr->cover; //accumulate all cells with the same X while (--num_cells != 0) { offset++; //move next cur_cell_ptr++; //move next if (cur_cell_ptr->x != x) { break; } area += cur_cell_ptr->area; cover += cur_cell_ptr->cover; } if (area != 0) { //----------------------------------------------- //single cell, for antialias look //----------------------------------------------- int alpha = CalculateAlpha((cover << (poly_subpix.SHIFT + 1)) - area); if (alpha != 0) { scline.AddCell(x, alpha); } x++; } if ((num_cells != 0) && (cur_cell_ptr->x > x)) { //----------------------------------------------- //this is long span , continuous color, solid look //----------------------------------------------- int alpha = CalculateAlpha(cover << (poly_subpix.SHIFT + 1)); if (alpha != 0) { scline.AddSpan(x, (cur_cell_ptr->x - x), alpha); } } } } } if (scline.SpanCount != 0) { break; } ++m_scan_y; } scline.CloseLine(m_scan_y); ++m_scan_y; return(true); }
//-------------------------------------------------------------------- internal bool SweepScanline(Scanline scline) { for (; ; ) { if (m_scan_y > m_cellAARas.MaxY) { return false; } scline.ResetSpans(); //------------------------- CellAA[] cells; int offset; int num_cells; m_cellAARas.GetCells(m_scan_y, out cells, out offset, out num_cells); int cover = 0; while (num_cells != 0) { unsafe { fixed (CellAA* cur_cell_h = &cells[0]) { CellAA* cur_cell_ptr = cur_cell_h + offset; int x = cur_cell_ptr->x; int area = cur_cell_ptr->area; cover += cur_cell_ptr->cover; //accumulate all cells with the same X while (--num_cells != 0) { offset++; //move next cur_cell_ptr++; //move next if (cur_cell_ptr->x != x) { break; } area += cur_cell_ptr->area; cover += cur_cell_ptr->cover; } if (area != 0) { //----------------------------------------------- //single cell, for antialias look //----------------------------------------------- int alpha = CalculateAlpha((cover << (poly_subpix.SHIFT + 1)) - area); if (alpha != 0) { scline.AddCell(x, alpha); } x++; } if ((num_cells != 0) && (cur_cell_ptr->x > x)) { //----------------------------------------------- //this is long span , continuous color, solid look //----------------------------------------------- int alpha = CalculateAlpha(cover << (poly_subpix.SHIFT + 1)); if (alpha != 0) { scline.AddSpan(x, (cur_cell_ptr->x - x), alpha); } } } } } if (scline.SpanCount != 0) { break; } ++m_scan_y; } scline.CloseLine(m_scan_y); ++m_scan_y; return true; }