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 int BaseStepH(ref DistanceInterpolator1 di)
{
_li.Next();
m_x += _lp.inc;
m_y = (_lp.y1 + _li.Y) >> LineAA.SUBPIXEL_SHIFT;
//
if (_lp.inc > 0)
{
di.IncX(m_y - m_old_y);
}
else /**/ di {
.DecX(m_y - m_old_y);
}
//
m_old_y = m_y;
//
return(di.Distance / _len);
}
public int BaseStepH(ref DistanceInterpolator2 di)
{
_li.Next();
m_x += _lp.inc;
m_y = (_lp.y1 + _li.Y) >> LineAA.SUBPIXEL_SHIFT;
//
if (_lp.inc > 0)
{
di.IncX(m_y - m_old_y);
}
else /**/ di {
public int BaseStepH(ref DistanceInterpolator1 di)
{
m_li.Next();
m_x += m_lp.inc;
m_y = (m_lp.y1 + m_li.Y) >> LineAA.SUBPIXEL_SHIFT;
if (m_lp.inc > 0)
{
di.IncX(m_y - m_old_y);
}
else
{
di.DecX(m_y - m_old_y);
}
m_old_y = m_y;
return(di.Distance / m_len);
}
public void Next()
{
m_li_x.Next();
m_li_y.Next();
}
////----------------------------------------------------------------
//public void ReSync(double xe, double ye, int len)
//{
// m_trans.Transform(ref xe, ref ye);
// m_li_x = new LineInterpolatorDDA2(m_li_x.Y, AggMath.iround(xe * SUB_PIXEL_SCALE), len);
// m_li_y = new LineInterpolatorDDA2(m_li_y.Y, AggMath.iround(ye * SUB_PIXEL_SCALE), len);
//}
public void Next()
{
_li_x.Next();
_li_y.Next();
}