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 static void Bisectrix(LineParameters l1,
LineParameters l2,
out int x, out int y)
{
double k = (double)(l2.len) / (double)(l1.len);
double tx = l2.x2 - (l2.x1 - l1.x1) * k;
double ty = l2.y2 - (l2.y1 - l1.y1) * k;
//All bisectrices must be on the right of the line
//If the next point is on the left (l1 => l2.2)
//then the bisectix should be rotated by 180 degrees.
if ((double)(l2.x2 - l2.x1) * (double)(l2.y1 - l1.y1) <
(double)(l2.y2 - l2.y1) * (double)(l2.x1 - l1.x1) + 100.0)
{
tx -= (tx - l2.x1) * 2.0;
ty -= (ty - l2.y1) * 2.0;
}
// Check if the bisectrix is too short
double dx = tx - l2.x1;
double dy = ty - l2.y1;
if ((int)Math.Sqrt(dx * dx + dy * dy) < SUBPIXEL_SCALE)
{
x = (l2.x1 + l2.x1 + (l2.y1 - l1.y1) + (l2.y2 - l2.y1)) >> 1;
y = (l2.y1 + l2.y1 - (l2.x1 - l1.x1) - (l2.x2 - l2.x1)) >> 1;
return;
}
x = AggBasics.iround(tx);
y = AggBasics.iround(ty);
}
//---------------------------------------------------------------------
public LineInterpolatorAA2(OutlineRenderer ren, LineParameters lp,
int ex, int ey)
: base(ren, lp)
{
m_di = new DistanceInterpolator2(lp.x1, lp.y1, lp.x2, lp.y2, ex, ey,
lp.x1 & ~LineAA.SUBPIXEL_MARK, lp.y1 & ~LineAA.SUBPIXEL_MARK,
0);
base.m_li.adjust_forward();
base.m_step -= base.m_max_extent;
}
public override void Line3(LineParameters lp,
int sx, int sy, int ex, int ey)
{
if (doClipping)
{
int x1 = lp.x1;
int y1 = lp.y1;
int x2 = lp.x2;
int y2 = lp.y2;
int flags = ClipLiangBarsky.ClipLineSegment(ref x1, ref y1, ref x2, ref y2, clippingRectangle);
if ((flags & 4) == 0)
{
if (flags != 0)
{
LineParameters lp2 = new LineParameters(x1, y1, x2, y2,
AggBasics.uround(AggMath.calc_distance(x1, y1, x2, y2)));
if ((flags & 1) != 0)
{
sx = x1 + (y2 - y1);
sy = y1 - (x2 - x1);
}
else
{
while (Math.Abs(sx - lp.x1) + Math.Abs(sy - lp.y1) > lp2.len)
{
sx = (lp.x1 + sx) >> 1;
sy = (lp.y1 + sy) >> 1;
}
}
if ((flags & 2) != 0)
{
ex = x2 + (y2 - y1);
ey = y2 - (x2 - x1);
}
else
{
while (Math.Abs(ex - lp.x2) + Math.Abs(ey - lp.y2) > lp2.len)
{
ex = (lp.x2 + ex) >> 1;
ey = (lp.y2 + ey) >> 1;
}
}
Line3NoClip(lp2, sx, sy, ex, ey);
}
else
{
Line3NoClip(lp, sx, sy, ex, ey);
}
}
}
else
{
Line3NoClip(lp, sx, sy, ex, ey);
}
}
/// <summary>
/// fix_degeneration_bisectrix_start
/// </summary>
/// <param name="lp"></param>
/// <param name="x"></param>
/// <param name="y"></param>
public static void FixDegenBisectrixStart(LineParameters lp,
ref int x, ref int y)
{
int d = AggBasics.iround(((double)(x - lp.x2) * (double)(lp.y2 - lp.y1) -
(double)(y - lp.y2) * (double)(lp.x2 - lp.x1)) / lp.len);
if (d < SUBPIXEL_SCALE / 2)
{
x = lp.x1 + (lp.y2 - lp.y1);
y = lp.y1 - (lp.x2 - lp.x1);
}
}
public LineInterpolatorAA2(
OutlineRenderer ren, LineParameters lp,
int ex, int ey)
{
this._ren = ren;
_aa_data = new Lines.LineInterpolatorAAData(ren, lp);
_m_di = new DistanceInterpolator2(lp.x1, lp.y1, lp.x2, lp.y2, ex, ey,
lp.x1 & ~LineAA.SUBPIXEL_MARK, lp.y1 & ~LineAA.SUBPIXEL_MARK,
0);
_aa_data.m_li.adjust_forward();
_aa_data.m_step -= _aa_data.m_max_extent;
}
void Line0NoClip(LineParameters lp)
{
if (lp.len > LineAA.MAX_LENGTH)
{
LineParameters lp1, lp2;
lp.Divide(out lp1, out lp2);
Line0NoClip(lp1);
Line0NoClip(lp2);
return;
}
LineInterpolatorAA0 li = new LineInterpolatorAA0(this, lp);
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();
}
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 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);
li.Loop();
}
//---------------------------------------------------------------------
public void Divide(out LineParameters lp1, out LineParameters lp2)
{
int xmid = (x1 + x2) >> 1;
int ymid = (y1 + y2) >> 1;
int len2 = len >> 1;
//lp1 = this; // it is a struct so this is a copy
//lp2 = this; // it is a struct so this is a copy
lp1 = new LineParameters(this.x1, this.y1, this.x2, this.y2, this.len);
lp2 = new LineParameters(this.x1, this.y1, this.x2, this.y2, this.len);
lp1.x2 = xmid;
lp1.y2 = ymid;
lp1.len = len2;
lp1.dx = Math.Abs(lp1.x2 - lp1.x1);
lp1.dy = Math.Abs(lp1.y2 - lp1.y1);
lp2.x1 = xmid;
lp2.y1 = ymid;
lp2.len = len2;
lp2.dx = Math.Abs(lp2.x2 - lp2.x1);
lp2.dy = Math.Abs(lp2.y2 - lp2.y1);
}
public LineInterpolatorAAData(OutlineRenderer ren, LineParameters lp)
{
m_dist = new int[MAX_HALF_WIDTH + 1];
m_covers = new byte[MAX_HALF_WIDTH * 2 + 4];
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_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 abstract void Line0(LineParameters lp);
public override void Line0(LineParameters lp)
{
}
public override void Line2(LineParameters lp, int ex, int ey)
{
}
public void Line3NoClip(LineParameters lp,
int sx, int sy, int ex, int ey)
{
throw new NotImplementedException();
/*
if(lp.len > LineAABasics.line_max_length)
{
line_parameters lp1, lp2;
lp.divide(lp1, lp2);
int mx = lp1.x2 + (lp1.y2 - lp1.y1);
int my = lp1.y2 - (lp1.x2 - lp1.x1);
line3_no_clip(lp1, (lp.x1 + sx) >> 1, (lp.y1 + sy) >> 1, mx, my);
line3_no_clip(lp2, mx, my, (lp.x2 + ex) >> 1, (lp.y2 + ey) >> 1);
return;
}
LineAABasics.fix_degenerate_bisectrix_start(lp, ref sx, ref sy);
LineAABasics.fix_degenerate_bisectrix_end(lp, ref ex, ref ey);
line_interpolator_image li = new line_interpolator_image(this, lp,
sx, sy,
ex, ey,
m_start, m_scale_x);
if(li.vertical())
{
while(li.step_ver());
}
else
{
while(li.step_hor());
}
m_start += uround(lp.len / m_scale_x);
*/
}
public override void Line2(LineParameters lp, int ex, int ey)
{
}
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()) ;
}
}
void Line0NoClip(LineParameters lp)
{
if (lp.len > LineAA.MAX_LENGTH)
{
LineParameters lp1, lp2;
lp.Divide(out lp1, out lp2);
Line0NoClip(lp1);
Line0NoClip(lp2);
return;
}
LineInterpolatorAA0 li = new LineInterpolatorAA0(this, lp);
if (li.Count != 0)
{
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()) ;
}
}
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;
}
}
}
public override void Line3(LineParameters lp,
int sx, int sy, int ex, int ey)
{
if (doClipping)
{
int x1 = lp.x1;
int y1 = lp.y1;
int x2 = lp.x2;
int y2 = lp.y2;
int flags = ClipLiangBarsky.ClipLineSegment(ref x1, ref y1, ref x2, ref y2, clippingRectangle);
if ((flags & 4) == 0)
{
if (flags != 0)
{
LineParameters lp2 = new LineParameters(x1, y1, x2, y2,
AggBasics.uround(AggMath.calc_distance(x1, y1, x2, y2)));
if ((flags & 1) != 0)
{
sx = x1 + (y2 - y1);
sy = y1 - (x2 - x1);
}
else
{
while (Math.Abs(sx - lp.x1) + Math.Abs(sy - lp.y1) > lp2.len)
{
sx = (lp.x1 + sx) >> 1;
sy = (lp.y1 + sy) >> 1;
}
}
if ((flags & 2) != 0)
{
ex = x2 + (y2 - y1);
ey = y2 - (x2 - x1);
}
else
{
while (Math.Abs(ex - lp.x2) + Math.Abs(ey - lp.y2) > lp2.len)
{
ex = (lp.x2 + ex) >> 1;
ey = (lp.y2 + ey) >> 1;
}
}
Line3NoClip(lp2, sx, sy, ex, ey);
}
else
{
Line3NoClip(lp, sx, sy, ex, ey);
}
}
}
else
{
Line3NoClip(lp, sx, sy, ex, ey);
}
}
/// <summary>
/// fix_degeneration_bisectrix_start
/// </summary>
/// <param name="lp"></param>
/// <param name="x"></param>
/// <param name="y"></param>
public static void FixDegenBisectrixStart(LineParameters lp,
ref int x, ref int y)
{
int d = AggBasics.iround(((double)(x - lp.x2) * (double)(lp.y2 - lp.y1) -
(double)(y - lp.y2) * (double)(lp.x2 - lp.x1)) / lp.len);
if (d < SUBPIXEL_SCALE / 2)
{
x = lp.x1 + (lp.y2 - lp.y1);
y = lp.y1 - (lp.x2 - lp.x1);
}
}
//---------------------------------------------------------------------
public void Divide(out LineParameters lp1, out LineParameters lp2)
{
int xmid = (x1 + x2) >> 1;
int ymid = (y1 + y2) >> 1;
int len2 = len >> 1;
//lp1 = this; // it is a struct so this is a copy
//lp2 = this; // it is a struct so this is a copy
lp1 = new LineParameters(this.x1, this.y1, this.x2, this.y2, this.len);
lp2 = new LineParameters(this.x1, this.y1, this.x2, this.y2, this.len);
lp1.x2 = xmid;
lp1.y2 = ymid;
lp1.len = len2;
lp1.dx = Math.Abs(lp1.x2 - lp1.x1);
lp1.dy = Math.Abs(lp1.y2 - lp1.y1);
lp2.x1 = xmid;
lp2.y1 = ymid;
lp2.len = len2;
lp2.dx = Math.Abs(lp2.x2 - lp2.x1);
lp2.dy = Math.Abs(lp2.y2 - lp2.y1);
}
//---------------------------------------------------------------------
public bool IsSameDiagonalQuadrant(LineParameters lp)
{
return s_diagonal_quadrant[octant] == s_diagonal_quadrant[lp.octant];
}
//---------------------------------------------------------------------
public LineInterpolatorAA3(OutlineRenderer ren, LineParameters lp,
int sx, int sy, int ex, int ey)
: base(ren, lp)
{
m_di = new DistanceInterpolator3(lp.x1, lp.y1, lp.x2, lp.y2, sx, sy, ex, ey,
lp.x1 & ~LineAA.SUBPIXEL_MARK, lp.y1 & ~LineAA.SUBPIXEL_MARK);
int dist1_start;
int dist2_start;
int npix = 1;
if (lp.vertical)
{
do
{
base.m_li.Prev();
base.m_y -= lp.inc;
base.m_x = (base.m_lp.x1 + base.m_li.Y) >> LineAA.SUBPIXEL_SHIFT;
if (lp.inc > 0) m_di.DecY(base.m_x - base.m_old_x);
else m_di.IncY(base.m_x - base.m_old_x);
base.m_old_x = base.m_x;
dist1_start = dist2_start = m_di.dist_start;
int dx = 0;
if (dist1_start < 0) ++npix;
do
{
dist1_start += m_di.DyStart;
dist2_start -= m_di.DyStart;
if (dist1_start < 0) ++npix;
if (dist2_start < 0) ++npix;
++dx;
}
while (base.m_dist[dx] <= base.m_width);
if (npix == 0) break;
npix = 0;
}
while (--base.m_step >= -base.m_max_extent);
}
else
{
do
{
base.m_li.Prev();
base.m_x -= lp.inc;
base.m_y = (base.m_lp.y1 + base.m_li.Y) >> LineAA.SUBPIXEL_SHIFT;
if (lp.inc > 0) m_di.DecX(base.m_y - base.m_old_y);
else m_di.IncX(base.m_y - base.m_old_y);
base.m_old_y = base.m_y;
dist1_start = dist2_start = m_di.dist_start;
int dy = 0;
if (dist1_start < 0) ++npix;
do
{
dist1_start -= m_di.DxStart;
dist2_start += m_di.DxStart;
if (dist1_start < 0) ++npix;
if (dist2_start < 0) ++npix;
++dy;
}
while (base.m_dist[dy] <= base.m_width);
if (npix == 0) break;
npix = 0;
}
while (--base.m_step >= -base.m_max_extent);
}
base.m_li.adjust_forward();
base.m_step -= base.m_max_extent;
}
//---------------------------------------------------------------------
public LineInterpolatorAA2(OutlineRenderer ren, LineParameters lp,
int ex, int ey)
: base(ren, lp)
{
m_di = new DistanceInterpolator2(lp.x1, lp.y1, lp.x2, lp.y2, ex, ey,
lp.x1 & ~LineAA.SUBPIXEL_MARK, lp.y1 & ~LineAA.SUBPIXEL_MARK,
0);
base.m_li.adjust_forward();
base.m_step -= base.m_max_extent;
}
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();
}
public abstract void Line3(LineParameters lp, int sx, int sy, int ex, int ey);
public abstract void Line2(LineParameters lp, int ex, int ey);
public override void Line0(LineParameters lp)
{
if (doClipping)
{
int x1 = lp.x1;
int y1 = lp.y1;
int x2 = lp.x2;
int y2 = lp.y2;
int flags = ClipLiangBarsky.ClipLineSegment(ref x1, ref y1, ref x2, ref y2, clippingRectangle);
if ((flags & 4) == 0)
{
if (flags != 0)
{
LineParameters lp2 = new LineParameters(x1, y1, x2, y2,
AggBasics.uround(AggMath.calc_distance(x1, y1, x2, y2)));
Line0NoClip(lp2);
}
else
{
Line0NoClip(lp);
}
}
}
else
{
Line0NoClip(lp);
}
}
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;
}
}
}
public override void Line3(LineParameters lp,
int sx, int sy, int ex, int ey)
{
throw new NotImplementedException();
/*
if(m_clipping)
{
int x1 = lp.x1;
int y1 = lp.y1;
int x2 = lp.x2;
int y2 = lp.y2;
uint flags = clip_line_segment(&x1, &y1, &x2, &y2, m_clip_box);
int start = m_start;
if((flags & 4) == 0)
{
if(flags)
{
line_parameters lp2(x1, y1, x2, y2,
uround(calc_distance(x1, y1, x2, y2)));
if(flags & 1)
{
m_start += uround(calc_distance(lp.x1, lp.y1, x1, y1) / m_scale_x);
sx = x1 + (y2 - y1);
sy = y1 - (x2 - x1);
}
else
{
while(Math.Abs(sx - lp.x1) + Math.Abs(sy - lp.y1) > lp2.len)
{
sx = (lp.x1 + sx) >> 1;
sy = (lp.y1 + sy) >> 1;
}
}
if(flags & 2)
{
ex = x2 + (y2 - y1);
ey = y2 - (x2 - x1);
}
else
{
while(Math.Abs(ex - lp.x2) + Math.Abs(ey - lp.y2) > lp2.len)
{
ex = (lp.x2 + ex) >> 1;
ey = (lp.y2 + ey) >> 1;
}
}
line3_no_clip(lp2, sx, sy, ex, ey);
}
else
{
line3_no_clip(lp, sx, sy, ex, ey);
}
}
m_start = start + uround(lp.len / m_scale_x);
}
else
{
line3_no_clip(lp, sx, sy, ex, ey);
}
*/
}
public override void Line1(LineParameters lp, int sx, int sy)
{
}
//---------------------------------------------------------------------
public bool IsSameDiagonalQuadrant(LineParameters lp)
{
return(s_diagonal_quadrant[octant] == s_diagonal_quadrant[lp.octant]);
}
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()) ;
}
}
//---------------------------------------------------------------------
public LineInterpolatorAA3(OutlineRenderer ren, LineParameters lp,
int sx, int sy, int ex, int ey)
: base(ren, lp)
{
m_di = new DistanceInterpolator3(lp.x1, lp.y1, lp.x2, lp.y2, sx, sy, ex, ey,
lp.x1 & ~LineAA.SUBPIXEL_MARK, lp.y1 & ~LineAA.SUBPIXEL_MARK);
int dist1_start;
int dist2_start;
int npix = 1;
if (lp.vertical)
{
do
{
base.m_li.Prev();
base.m_y -= lp.inc;
base.m_x = (base.m_lp.x1 + base.m_li.Y) >> LineAA.SUBPIXEL_SHIFT;
if (lp.inc > 0)
{
m_di.DecY(base.m_x - base.m_old_x);
}
else
{
m_di.IncY(base.m_x - base.m_old_x);
}
base.m_old_x = base.m_x;
dist1_start = dist2_start = m_di.dist_start;
int dx = 0;
if (dist1_start < 0)
{
++npix;
}
do
{
dist1_start += m_di.DyStart;
dist2_start -= m_di.DyStart;
if (dist1_start < 0)
{
++npix;
}
if (dist2_start < 0)
{
++npix;
}
++dx;
}while (base.m_dist[dx] <= base.m_width);
if (npix == 0)
{
break;
}
npix = 0;
}while (--base.m_step >= -base.m_max_extent);
}
else
{
do
{
base.m_li.Prev();
base.m_x -= lp.inc;
base.m_y = (base.m_lp.y1 + base.m_li.Y) >> LineAA.SUBPIXEL_SHIFT;
if (lp.inc > 0)
{
m_di.DecX(base.m_y - base.m_old_y);
}
else
{
m_di.IncX(base.m_y - base.m_old_y);
}
base.m_old_y = base.m_y;
dist1_start = dist2_start = m_di.dist_start;
int dy = 0;
if (dist1_start < 0)
{
++npix;
}
do
{
dist1_start -= m_di.DxStart;
dist2_start += m_di.DxStart;
if (dist1_start < 0)
{
++npix;
}
if (dist2_start < 0)
{
++npix;
}
++dy;
}while (base.m_dist[dy] <= base.m_width);
if (npix == 0)
{
break;
}
npix = 0;
}while (--base.m_step >= -base.m_max_extent);
}
base.m_li.adjust_forward();
base.m_step -= base.m_max_extent;
}
public abstract void Line0(LineParameters lp);
public override void Line1(LineParameters lp, int sx, int sy)
{
}
public abstract void Line1(LineParameters lp, int sx, int sy);
public override void Line3(LineParameters lp,
int sx, int sy, int ex, int ey)
{
throw new NotImplementedException();
/*
* if(m_clipping)
* {
* int x1 = lp.x1;
* int y1 = lp.y1;
* int x2 = lp.x2;
* int y2 = lp.y2;
* uint flags = clip_line_segment(&x1, &y1, &x2, &y2, m_clip_box);
* int start = m_start;
* if((flags & 4) == 0)
* {
* if(flags)
* {
* line_parameters lp2(x1, y1, x2, y2,
* uround(calc_distance(x1, y1, x2, y2)));
* if(flags & 1)
* {
* m_start += uround(calc_distance(lp.x1, lp.y1, x1, y1) / m_scale_x);
* sx = x1 + (y2 - y1);
* sy = y1 - (x2 - x1);
* }
* else
* {
* while(Math.Abs(sx - lp.x1) + Math.Abs(sy - lp.y1) > lp2.len)
* {
* sx = (lp.x1 + sx) >> 1;
* sy = (lp.y1 + sy) >> 1;
* }
* }
* if(flags & 2)
* {
* ex = x2 + (y2 - y1);
* ey = y2 - (x2 - x1);
* }
* else
* {
* while(Math.Abs(ex - lp.x2) + Math.Abs(ey - lp.y2) > lp2.len)
* {
* ex = (lp.x2 + ex) >> 1;
* ey = (lp.y2 + ey) >> 1;
* }
* }
* line3_no_clip(lp2, sx, sy, ex, ey);
* }
* else
* {
* line3_no_clip(lp, sx, sy, ex, ey);
* }
* }
* m_start = start + uround(lp.len / m_scale_x);
* }
* else
* {
* line3_no_clip(lp, sx, sy, ex, ey);
* }
*/
}
public abstract void Line2(LineParameters lp, int ex, int ey);
public abstract void Line1(LineParameters lp, int sx, int sy);
//---------------------------------------------------------------------
public LineInterpolatorAA0(OutlineRenderer ren, LineParameters lp)
: base(ren, lp)
{
m_di = new DistanceInterpolator1(lp.x1, lp.y1, lp.x2, lp.y2,
lp.x1 & ~LineAA.SUBPIXEL_MARK, lp.y1 & ~LineAA.SUBPIXEL_MARK);
m_li.adjust_forward();
}
public abstract void Line3(LineParameters lp, int sx, int sy, int ex, int ey);
public LineInterpolatorAA3(OutlineRenderer ren, LineParameters lp,
int sx, int sy, int ex, int ey)
{
this._ren = ren;
_aa_data = new Lines.LineInterpolatorAAData(ren, lp);
_m_di = new DistanceInterpolator3(lp.x1, lp.y1, lp.x2, lp.y2, sx, sy, ex, ey,
lp.x1 & ~LineAA.SUBPIXEL_MARK, lp.y1 & ~LineAA.SUBPIXEL_MARK);
int dist1_start;
int dist2_start;
int npix = 1;
if (lp.vertical)
{
do
{
_aa_data.m_li.Prev();
_aa_data.m_y -= lp.inc;
_aa_data.m_x = (_aa_data.m_lp.x1 + _aa_data.m_li.Y) >> LineAA.SUBPIXEL_SHIFT;
if (lp.inc > 0)
{
_m_di.DecY(_aa_data.m_x - _aa_data.m_old_x);
}
else
{
_m_di.IncY(_aa_data.m_x - _aa_data.m_old_x);
}
_aa_data.m_old_x = _aa_data.m_x;
dist1_start = dist2_start = _m_di.dist_start;
int dx = 0;
if (dist1_start < 0)
{
++npix;
}
do
{
dist1_start += _m_di.DyStart;
dist2_start -= _m_di.DyStart;
if (dist1_start < 0)
{
++npix;
}
if (dist2_start < 0)
{
++npix;
}
++dx;
}while (_aa_data.m_dist[dx] <= _aa_data.m_width);
if (npix == 0)
{
break;
}
npix = 0;
}while (--_aa_data.m_step >= -_aa_data.m_max_extent);
}
else
{
do
{
_aa_data.m_li.Prev();
_aa_data.m_x -= lp.inc;
_aa_data.m_y = (_aa_data.m_lp.y1 + _aa_data.m_li.Y) >> LineAA.SUBPIXEL_SHIFT;
if (lp.inc > 0)
{
_m_di.DecX(_aa_data.m_y - _aa_data.m_old_y);
}
else
{
_m_di.IncX(_aa_data.m_y - _aa_data.m_old_y);
}
_aa_data.m_old_y = _aa_data.m_y;
dist1_start = dist2_start = _m_di.dist_start;
int dy = 0;
if (dist1_start < 0)
{
++npix;
}
do
{
dist1_start -= _m_di.DxStart;
dist2_start += _m_di.DxStart;
if (dist1_start < 0)
{
++npix;
}
if (dist2_start < 0)
{
++npix;
}
++dy;
}while (_aa_data.m_dist[dy] <= _aa_data.m_width);
if (npix == 0)
{
break;
}
npix = 0;
}while (--_aa_data.m_step >= -_aa_data.m_max_extent);
}
_aa_data.m_li.adjust_forward();
_aa_data.m_step -= _aa_data.m_max_extent;
}
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();
}
public override void Line0(LineParameters lp)
{
}
