public LineInterpolatorAABase(OutlineRenderer ren, LineParameters lp) { m_lp = lp; m_li = new LineInterpolatorDDA2(lp.vertical ? LineAA.DblHr(lp.x2 - lp.x1) : LineAA.DblHr(lp.y2 - lp.y1), lp.vertical ? Math.Abs(lp.y2 - lp.y1) : Math.Abs(lp.x2 - lp.x1) + 1); m_ren = ren; m_len = ((lp.vertical == (lp.inc > 0)) ? -lp.len : lp.len); m_x = (lp.x1 >> LineAA.SUBPIXEL_SHIFT); m_y = (lp.y1 >> LineAA.SUBPIXEL_SHIFT); m_old_x = (m_x); m_old_y = (m_y); m_count = ((lp.vertical ? Math.Abs((lp.y2 >> LineAA.SUBPIXEL_SHIFT) - m_y) : Math.Abs((lp.x2 >> LineAA.SUBPIXEL_SHIFT) - m_x))); m_width = (ren.SubPixelWidth); //m_max_extent(m_width >> (line_subpixel_shift - 2)); m_max_extent = ((m_width + LineAA.SUBPIXEL_MARK) >> LineAA.SUBPIXEL_SHIFT); m_step = 0; LineInterpolatorDDA2 li = new LineInterpolatorDDA2(0, lp.vertical ? (lp.dy << LineAA.SUBPIXEL_SHIFT) : (lp.dx << LineAA.SUBPIXEL_SHIFT), lp.len); int i; int stop = m_width + LineAA.SUBPIXEL_SCALE * 2; for (i = 0; i < MAX_HALF_WIDTH; ++i) { m_dist[i] = li.Y; if (m_dist[i] >= stop) { break; } li.Next(); } m_dist[i++] = 0x7FFF0000; }
public LineInterpolatorAABase(OutlineRenderer ren, LineParameters lp) { m_lp = lp; m_li = new LineInterpolatorDDA2(lp.vertical ? LineAA.DblHr(lp.x2 - lp.x1) : LineAA.DblHr(lp.y2 - lp.y1), lp.vertical ? Math.Abs(lp.y2 - lp.y1) : Math.Abs(lp.x2 - lp.x1) + 1); m_ren = ren; m_len = ((lp.vertical == (lp.inc > 0)) ? -lp.len : lp.len); m_x = (lp.x1 >> LineAA.SUBPIXEL_SHIFT); m_y = (lp.y1 >> LineAA.SUBPIXEL_SHIFT); m_old_x = (m_x); m_old_y = (m_y); m_count = ((lp.vertical ? Math.Abs((lp.y2 >> LineAA.SUBPIXEL_SHIFT) - m_y) : Math.Abs((lp.x2 >> LineAA.SUBPIXEL_SHIFT) - m_x))); m_width = (ren.SubPixelWidth); //m_max_extent(m_width >> (line_subpixel_shift - 2)); m_max_extent = ((m_width + LineAA.SUBPIXEL_MARK) >> LineAA.SUBPIXEL_SHIFT); m_step = 0; LineInterpolatorDDA2 li = new LineInterpolatorDDA2(0, lp.vertical ? (lp.dy << LineAA.SUBPIXEL_SHIFT) : (lp.dx << LineAA.SUBPIXEL_SHIFT), lp.len); int i; int stop = m_width + LineAA.SUBPIXEL_SCALE * 2; for (i = 0; i < MAX_HALF_WIDTH; ++i) { m_dist[i] = li.Y; if (m_dist[i] >= stop) break; li.Next(); } m_dist[i++] = 0x7FFF0000; }