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;
}
void Line2NoClip(LineParameters lp, int ex, int ey)
{
if (lp.len > LineAA.MAX_LENGTH)
{
LineParameters lp1, lp2;
lp.Divide(out lp1, out lp2);
Line2NoClip(lp1, lp1.x2 + (lp1.y2 - lp1.y1), lp1.y2 - (lp1.x2 - lp1.x1));
Line2NoClip(lp2, (lp.x2 + ex) >> 1, (lp.y2 + ey) >> 1);
return;
}
LineAA.FixDegenBisectrixEnd(lp, ref ex, ref ey);
LineInterpolatorAA2 li = new LineInterpolatorAA2(this, lp, ex, ey);
if (li.IsVertical)
{
while (li.StepV())
{
;
}
}
else
{
while (li.StepH())
{
;
}
}
}
void Line3NoClip(LineParameters lp,
int sx, int sy, int ex, int ey)
{
if (lp.len > LineAA.MAX_LENGTH)
{
LineParameters lp1, lp2;
lp.Divide(out lp1, out lp2);
int mx = lp1.x2 + (lp1.y2 - lp1.y1);
int my = lp1.y2 - (lp1.x2 - lp1.x1);
Line3NoClip(lp1, (lp.x1 + sx) >> 1, (lp.y1 + sy) >> 1, mx, my);
Line3NoClip(lp2, mx, my, (lp.x2 + ex) >> 1, (lp.y2 + ey) >> 1);
return;
}
LineAA.FixDegenBisectrixStart(lp, ref sx, ref sy);
LineAA.FixDegenBisectrixEnd(lp, ref ex, ref ey);
LineInterpolatorAA3 li = new LineInterpolatorAA3(this, lp, sx, sy, ex, ey);
if (li.IsVertical)
{
while (li.StepV())
{
;
}
}
else
{
while (li.StepH())
{
;
}
}
}
//---------------------------------------------------------------------
public DistanceInterpolator3(int x1, int y1, int x2, int y2,
int sx, int sy, int ex, int ey,
int x, int y)
{
unchecked
{
m_dx = (x2 - x1);
m_dy = (y2 - y1);
m_dx_start = (LineAA.Mr(sx) - LineAA.Mr(x1));
m_dy_start = (LineAA.Mr(sy) - LineAA.Mr(y1));
m_dx_end = (LineAA.Mr(ex) - LineAA.Mr(x2));
m_dy_end = (LineAA.Mr(ey) - LineAA.Mr(y2));
m_dist = (AggBasics.iround((double)(x + LineAA.SUBPIXEL_SCALE / 2 - x2) * (double)(m_dy) -
(double)(y + LineAA.SUBPIXEL_SCALE / 2 - y2) * (double)(m_dx)));
m_dist_start = ((LineAA.Mr(x + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(sx)) * m_dy_start -
(LineAA.Mr(y + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(sy)) * m_dx_start);
m_dist_end = ((LineAA.Mr(x + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(ex)) * m_dy_end -
(LineAA.Mr(y + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(ey)) * m_dx_end);
m_dx <<= LineAA.SUBPIXEL_SHIFT;
m_dy <<= LineAA.SUBPIXEL_SHIFT;
m_dx_start <<= LineAA.MR_SUBPIXEL_SHIFT;
m_dy_start <<= LineAA.MR_SUBPIXEL_SHIFT;
m_dx_end <<= LineAA.MR_SUBPIXEL_SHIFT;
m_dy_end <<= LineAA.MR_SUBPIXEL_SHIFT;
}
}
void Line1NoClip(LineParameters lp, int sx, int sy)
{
if (lp.len > LineAA.MAX_LENGTH)
{
LineParameters lp1, lp2;
lp.Divide(out lp1, out lp2);
Line1NoClip(lp1, (lp.x1 + sx) >> 1, (lp.y1 + sy) >> 1);
Line1NoClip(lp2, lp1.x2 + (lp1.y2 - lp1.y1), lp1.y2 - (lp1.x2 - lp1.x1));
return;
}
LineAA.FixDegenBisectrixStart(lp, ref sx, ref sy);
LineInterpolatorAA1 li = new LineInterpolatorAA1(this, lp, sx, sy);
if (li.IsVertical)
{
while (li.StepV())
{
;
}
}
else
{
while (li.StepH())
{
;
}
}
}
public DistanceInterpolator0(int x1, int y1, int x2, int y2, int x, int y)
{
unchecked
{
m_dx = (LineAA.Mr(x2) - LineAA.Mr(x1));
m_dy = (LineAA.Mr(y2) - LineAA.Mr(y1));
m_dist = ((LineAA.Mr(x + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(x2)) * m_dy -
(LineAA.Mr(y + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(y2)) * m_dx);
m_dx <<= LineAA.MR_SUBPIXEL_SHIFT;
m_dy <<= LineAA.MR_SUBPIXEL_SHIFT;
}
}
void Line2NoClip(LineParameters lp, int ex, int ey)
{
if (lp.len > LineAA.MAX_LENGTH)
{
LineParameters lp1, lp2;
lp.Divide(out lp1, out lp2);
Line2NoClip(lp1, lp1.x2 + (lp1.y2 - lp1.y1), lp1.y2 - (lp1.x2 - lp1.x1));
Line2NoClip(lp2, (lp.x2 + ex) >> 1, (lp.y2 + ey) >> 1);
return;
}
LineAA.FixDegenBisectrixEnd(lp, ref ex, ref ey);
LineInterpolatorAA2 li = new LineInterpolatorAA2(this, lp, ex, ey);
li.Loop();
}
void Line1NoClip(LineParameters lp, int sx, int sy)
{
if (lp.len > LineAA.MAX_LENGTH)
{
LineParameters lp1, lp2;
lp.Divide(out lp1, out lp2);
Line1NoClip(lp1, (lp.x1 + sx) >> 1, (lp.y1 + sy) >> 1);
Line1NoClip(lp2, lp1.x2 + (lp1.y2 - lp1.y1), lp1.y2 - (lp1.x2 - lp1.x1));
return;
}
LineAA.FixDegenBisectrixStart(lp, ref sx, ref sy);
LineInterpolatorAA1 li = new LineInterpolatorAA1(this, lp, sx, sy);
li.Loop();
}
public DistanceInterpolator00(int xc, int yc,
int x1, int y1, int x2, int y2,
int x, int y)
{
m_dx1 = (LineAA.Mr(x1) - LineAA.Mr(xc));
m_dy1 = (LineAA.Mr(y1) - LineAA.Mr(yc));
m_dx2 = (LineAA.Mr(x2) - LineAA.Mr(xc));
m_dy2 = (LineAA.Mr(y2) - LineAA.Mr(yc));
m_dist1 = ((LineAA.Mr(x + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(x1)) * m_dy1 -
(LineAA.Mr(y + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(y1)) * m_dx1);
m_dist2 = ((LineAA.Mr(x + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(x2)) * m_dy2 -
(LineAA.Mr(y + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(y2)) * m_dx2);
m_dx1 <<= LineAA.MR_SUBPIXEL_SHIFT;
m_dy1 <<= LineAA.MR_SUBPIXEL_SHIFT;
m_dx2 <<= LineAA.MR_SUBPIXEL_SHIFT;
m_dy2 <<= LineAA.MR_SUBPIXEL_SHIFT;
}
public DistanceInterpolator2(int x1, int y1, int x2, int y2,
int ex, int ey, int x, int y, int none)
{
m_dx = (x2 - x1);
m_dy = (y2 - y1);
m_dx_start = (LineAA.Mr(ex) - LineAA.Mr(x2));
m_dy_start = (LineAA.Mr(ey) - LineAA.Mr(y2));
m_dist = (AggBasics.iround((double)(x + LineAA.SUBPIXEL_SCALE / 2 - x2) * (double)(m_dy) -
(double)(y + LineAA.SUBPIXEL_SCALE / 2 - y2) * (double)(m_dx)));
m_dist_start = ((LineAA.Mr(x + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(ex)) * m_dy_start -
(LineAA.Mr(y + LineAA.SUBPIXEL_SCALE / 2) - LineAA.Mr(ey)) * m_dx_start);
m_dx <<= LineAA.SUBPIXEL_SHIFT;
m_dy <<= LineAA.SUBPIXEL_SHIFT;
m_dx_start <<= LineAA.MR_SUBPIXEL_SHIFT;
m_dy_start <<= LineAA.MR_SUBPIXEL_SHIFT;
}
public void Render(bool close_polygon)
{
m_src_vertices.Close(close_polygon);
DrawVarsPart0 dv = new DrawVarsPart0();
DrawVarsPart1 dv1 = new DrawVarsPart1();
DrawVarsPart2 dv2 = new DrawVarsPart2();
LineAAVertex v;
int x1;
int y1;
int x2;
int y2;
int lprev;
LineParameters curr = null;
LineParameters next = null;
if (close_polygon)
{
if (m_src_vertices.Count >= 3)
{
dv.idx = 2;
v = m_src_vertices[m_src_vertices.Count - 1];
x1 = v.x;
y1 = v.y;
lprev = v.len;
v = m_src_vertices[0];
x2 = v.x;
y2 = v.y;
dv.lcurr = v.len;
LineParameters prev = new LineParameters(x1, y1, x2, y2, lprev);
v = m_src_vertices[1];
dv1.x1 = v.x;
dv1.y1 = v.y;
dv.lnext = v.len;
curr = new LineParameters(x2, y2, dv1.x1, dv1.y1, dv.lcurr);
v = m_src_vertices[dv.idx];
dv1.x2 = v.x;
dv1.y2 = v.y;
next = new LineParameters(dv1.x1, dv1.y1, dv1.x2, dv1.y2, dv.lnext);
dv2.xb1 = 0;
dv2.yb1 = 0;
dv2.xb2 = 0;
dv2.yb2 = 0;
switch (m_line_join)
{
case OutlineJoin.NoJoin:
dv.flags = 3;
break;
case OutlineJoin.Mitter:
case OutlineJoin.Round:
dv.flags =
(prev.DiagonalQuadrant == curr.DiagonalQuadrant ? 1 : 0) |
((curr.DiagonalQuadrant == next.DiagonalQuadrant ? 1 : 0) << 1);
break;
case OutlineJoin.AccurateJoin:
dv.flags = 0;
break;
}
if ((dv.flags & 1) == 0 && m_line_join != OutlineJoin.Round)
{
LineAA.Bisectrix(prev, curr, out dv2.xb1, out dv2.yb1);
}
if ((dv.flags & 2) == 0 && m_line_join != OutlineJoin.Round)
{
LineAA.Bisectrix(curr, next, out dv2.xb2, out dv2.yb2);
}
Draw(ref dv, ref dv1, ref dv2, ref curr, ref next, 0, m_src_vertices.Count);
}
}
else
{
switch (m_src_vertices.Count)
{
case 0:
case 1:
break;
case 2:
{
v = m_src_vertices[0];
x1 = v.x;
y1 = v.y;
lprev = v.len;
v = m_src_vertices[1];
x2 = v.x;
y2 = v.y;
LineParameters lp = new LineParameters(x1, y1, x2, y2, lprev);
if (m_round_cap)
{
m_ren.SemiDot(CompareDistStart, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
}
m_ren.Line3(lp,
x1 + (y2 - y1),
y1 - (x2 - x1),
x2 + (y2 - y1),
y2 - (x2 - x1));
if (m_round_cap)
{
m_ren.SemiDot(CompareDistEnd, x2, y2, x2 + (y2 - y1), y2 - (x2 - x1));
}
}
break;
case 3:
{
int x3, y3;
int lnext;
v = m_src_vertices[0];
x1 = v.x;
y1 = v.y;
lprev = v.len;
v = m_src_vertices[1];
x2 = v.x;
y2 = v.y;
lnext = v.len;
v = m_src_vertices[2];
x3 = v.x;
y3 = v.y;
LineParameters lp1 = new LineParameters(x1, y1, x2, y2, lprev);
LineParameters lp2 = new LineParameters(x2, y2, x3, y3, lnext);
if (m_round_cap)
{
m_ren.SemiDot(CompareDistStart, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
}
if (m_line_join == OutlineJoin.Round)
{
m_ren.Line3(lp1, x1 + (y2 - y1), y1 - (x2 - x1),
x2 + (y2 - y1), y2 - (x2 - x1));
m_ren.Pie(x2, y2, x2 + (y2 - y1), y2 - (x2 - x1),
x2 + (y3 - y2), y2 - (x3 - x2));
m_ren.Line3(lp2, x2 + (y3 - y2), y2 - (x3 - x2),
x3 + (y3 - y2), y3 - (x3 - x2));
}
else
{
LineAA.Bisectrix(lp1, lp2, out dv2.xb1, out dv2.yb1);
m_ren.Line3(lp1, x1 + (y2 - y1), y1 - (x2 - x1),
dv2.xb1, dv2.yb1);
m_ren.Line3(lp2, dv2.xb1, dv2.yb1,
x3 + (y3 - y2), y3 - (x3 - x2));
}
if (m_round_cap)
{
m_ren.SemiDot(CompareDistEnd, x3, y3, x3 + (y3 - y2), y3 - (x3 - x2));
}
}
break;
default:
{
dv.idx = 3;
v = m_src_vertices[0];
x1 = v.x;
y1 = v.y;
lprev = v.len;
v = m_src_vertices[1];
x2 = v.x;
y2 = v.y;
dv.lcurr = v.len;
LineParameters prev = new LineParameters(x1, y1, x2, y2, lprev);
v = m_src_vertices[2];
dv1.x1 = v.x;
dv1.y1 = v.y;
dv.lnext = v.len;
curr = new LineParameters(x2, y2, dv1.x1, dv1.y1, dv.lcurr);
v = m_src_vertices[dv.idx];
dv1.x2 = v.x;
dv1.y2 = v.y;
next = new LineParameters(dv1.x1, dv1.y1, dv1.x2, dv1.y2, dv.lnext);
dv2.xb1 = 0;
dv2.yb1 = 0;
dv2.xb2 = 0;
dv2.yb2 = 0;
switch (m_line_join)
{
case OutlineJoin.NoJoin:
dv.flags = 3;
break;
case OutlineJoin.Mitter:
case OutlineJoin.Round:
dv.flags =
(prev.DiagonalQuadrant == curr.DiagonalQuadrant ? 1 : 0) |
((curr.DiagonalQuadrant == next.DiagonalQuadrant ? 1 : 0) << 1);
break;
case OutlineJoin.AccurateJoin:
dv.flags = 0;
break;
}
if (m_round_cap)
{
m_ren.SemiDot(CompareDistStart, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
}
if ((dv.flags & 1) == 0)
{
if (m_line_join == OutlineJoin.Round)
{
m_ren.Line3(prev, x1 + (y2 - y1), y1 - (x2 - x1),
x2 + (y2 - y1), y2 - (x2 - x1));
m_ren.Pie(prev.x2, prev.y2,
x2 + (y2 - y1), y2 - (x2 - x1),
curr.x1 + (curr.y2 - curr.y1),
curr.y1 - (curr.x2 - curr.x1));
}
else
{
LineAA.Bisectrix(prev, curr, out dv2.xb1, out dv2.yb1);
m_ren.Line3(prev, x1 + (y2 - y1), y1 - (x2 - x1),
dv2.xb1, dv2.yb1);
}
}
else
{
m_ren.Line1(prev,
x1 + (y2 - y1),
y1 - (x2 - x1));
}
if ((dv.flags & 2) == 0 && m_line_join != OutlineJoin.Round)
{
LineAA.Bisectrix(curr, next, out dv2.xb2, out dv2.yb2);
}
Draw(ref dv, ref dv1, ref dv2, ref curr, ref next, 1, m_src_vertices.Count - 2);
if ((dv.flags & 1) == 0)
{
if (m_line_join == OutlineJoin.Round)
{
m_ren.Line3(curr,
curr.x1 + (curr.y2 - curr.y1),
curr.y1 - (curr.x2 - curr.x1),
curr.x2 + (curr.y2 - curr.y1),
curr.y2 - (curr.x2 - curr.x1));
}
else
{
m_ren.Line3(curr, dv2.xb1, dv2.yb1,
curr.x2 + (curr.y2 - curr.y1),
curr.y2 - (curr.x2 - curr.x1));
}
}
else
{
m_ren.Line2(curr,
curr.x2 + (curr.y2 - curr.y1),
curr.y2 - (curr.x2 - curr.x1));
}
if (m_round_cap)
{
m_ren.SemiDot(CompareDistEnd, curr.x2, curr.y2,
curr.x2 + (curr.y2 - curr.y1),
curr.y2 - (curr.x2 - curr.x1));
}
}
break;
}
}
m_src_vertices.Clear();
}
void Draw(ref DrawVarsPart0 dv,
ref DrawVarsPart1 dv1,
ref DrawVarsPart2 dv2,
ref LineParameters curr,
ref LineParameters next,
int start,
int end)
{
int i;
for (i = start; i < end; i++)
{
if (m_line_join == OutlineJoin.Round)
{
dv2.xb1 = curr.x1 + (curr.y2 - curr.y1);
dv2.yb1 = curr.y1 - (curr.x2 - curr.x1);
dv2.xb2 = curr.x2 + (curr.y2 - curr.y1);
dv2.yb2 = curr.y2 - (curr.x2 - curr.x1);
}
switch (dv.flags)
{
case 0: m_ren.Line3(curr, dv2.xb1, dv2.yb1, dv2.xb2, dv2.yb2); break;
case 1: m_ren.Line2(curr, dv2.xb2, dv2.yb2); break;
case 2: m_ren.Line1(curr, dv2.xb1, dv2.yb1); break;
case 3: m_ren.Line0(curr); break;
}
if (m_line_join == OutlineJoin.Round && (dv.flags & 2) == 0)
{
m_ren.Pie(curr.x2, curr.y2,
curr.x2 + (curr.y2 - curr.y1),
curr.y2 - (curr.x2 - curr.x1),
curr.x2 + (next.y2 - next.y1),
curr.y2 - (next.x2 - next.x1));
}
dv1.x1 = dv1.x2;
dv1.y1 = dv1.y2;
dv.lcurr = dv.lnext;
dv.lnext = m_src_vertices[dv.idx].len;
++dv.idx;
if (dv.idx >= m_src_vertices.Count)
{
dv.idx = 0;
}
dv1.x2 = m_src_vertices[dv.idx].x;
dv1.y2 = m_src_vertices[dv.idx].y;
curr = next;
next = new LineParameters(dv1.x1, dv1.y1, dv1.x2, dv1.y2, dv.lnext);
dv2.xb1 = dv2.xb2;
dv2.yb1 = dv2.yb2;
switch (m_line_join)
{
case OutlineJoin.NoJoin:
dv.flags = 3;
break;
case OutlineJoin.Mitter:
dv.flags >>= 1;
dv.flags |= (curr.DiagonalQuadrant ==
next.DiagonalQuadrant ? 1 : 0);
if ((dv.flags & 2) == 0)
{
LineAA.Bisectrix(curr, next, out dv2.xb2, out dv2.yb2);
}
break;
case OutlineJoin.Round:
dv.flags >>= 1;
dv.flags |= (((curr.DiagonalQuadrant ==
next.DiagonalQuadrant) ? 1 : 0) << 1);
break;
case OutlineJoin.AccurateJoin:
dv.flags = 0;
LineAA.Bisectrix(curr, next, out dv2.xb2, out dv2.yb2);
break;
}
}
}
