public static void bisectrix(line_parameters l1,
line_parameters 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) < line_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 = agg_basics.iround(tx);
y = agg_basics.iround(ty);
}
public void line3_no_clip(line_parameters 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 static void fix_degenerate_bisectrix_end(line_parameters lp,
ref int x, ref int y)
{
int d = agg_basics.iround(((double)(x - lp.x2) * (double)(lp.y2 - lp.y1) -
(double)(y - lp.y2) * (double)(lp.x2 - lp.x1)) / lp.len);
if (d < line_subpixel_scale / 2)
{
x = lp.x2 + (lp.y2 - lp.y1);
y = lp.y2 - (lp.x2 - lp.x1);
}
}
//---------------------------------------------------------------------
public void divide(out line_parameters lp1, out line_parameters 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.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 line_interpolator_image(renderer_outline_aa ren, line_parameters lp,
int sx, int sy, int ex, int ey,
int pattern_start,
double scale_x)
{
throw new NotImplementedException();
/*
* m_lp=(lp);
* m_li = new dda2_line_interpolator(lp.vertical ? LineAABasics.line_dbl_hr(lp.x2 - lp.x1) :
* LineAABasics.line_dbl_hr(lp.y2 - lp.y1),
* lp.vertical ? Math.Abs(lp.y2 - lp.y1) :
* Math.Abs(lp.x2 - lp.x1) + 1);
* m_di = new distance_interpolator4(lp.x1, lp.y1, lp.x2, lp.y2, sx, sy, ex, ey, lp.len, scale_x,
* lp.x1 & ~LineAABasics.line_subpixel_mask, lp.y1 & ~LineAABasics.line_subpixel_mask);
* m_ren=ren;
* m_x = (lp.x1 >> LineAABasics.line_subpixel_shift);
* m_y = (lp.y1 >> LineAABasics.line_subpixel_shift);
* m_old_x=(m_x);
* m_old_y=(m_y);
* m_count = ((lp.vertical ? Math.Abs((lp.y2 >> LineAABasics.line_subpixel_shift) - m_y) :
* Math.Abs((lp.x2 >> LineAABasics.line_subpixel_shift) - m_x)));
* m_width=(ren.subpixel_width());
* //m_max_extent(m_width >> (LineAABasics.line_subpixel_shift - 2));
* m_max_extent = ((m_width + LineAABasics.line_subpixel_scale) >> LineAABasics.line_subpixel_shift);
* m_start=(pattern_start + (m_max_extent + 2) * ren.pattern_width());
* m_step=(0);
*
* dda2_line_interpolator li = new dda2_line_interpolator(0, lp.vertical ?
* (lp.dy << LineAABasics.line_subpixel_shift) :
* (lp.dx << LineAABasics.line_subpixel_shift),
* lp.len);
*
* uint i;
* int stop = m_width + LineAABasics.line_subpixel_scale * 2;
* for(i = 0; i < max_half_width; ++i)
* {
* m_dist_pos[i] = li.y();
* if(m_dist_pos[i] >= stop) break;
++li;
* }
* m_dist_pos[i] = 0x7FFF0000;
*
* int dist1_start;
* int dist2_start;
* int npix = 1;
*
* if(lp.vertical)
* {
* do
* {
* --m_li;
* m_y -= lp.inc;
* m_x = (m_lp.x1 + m_li.y()) >> LineAABasics.line_subpixel_shift;
*
* if(lp.inc > 0) m_di.dec_y(m_x - m_old_x);
* else m_di.inc_y(m_x - m_old_x);
*
* m_old_x = m_x;
*
* dist1_start = dist2_start = m_di.dist_start();
*
* int dx = 0;
* if(dist1_start < 0) ++npix;
* do
* {
* dist1_start += m_di.dy_start();
* dist2_start -= m_di.dy_start();
* if(dist1_start < 0) ++npix;
* if(dist2_start < 0) ++npix;
++dx;
* }
* while(m_dist_pos[dx] <= m_width);
* if(npix == 0) break;
*
* npix = 0;
* }
* while(--m_step >= -m_max_extent);
* }
* else
* {
* do
* {
* --m_li;
*
* m_x -= lp.inc;
* m_y = (m_lp.y1 + m_li.y()) >> LineAABasics.line_subpixel_shift;
*
* if(lp.inc > 0) m_di.dec_x(m_y - m_old_y);
* else m_di.inc_x(m_y - m_old_y);
*
* m_old_y = m_y;
*
* dist1_start = dist2_start = m_di.dist_start();
*
* int dy = 0;
* if(dist1_start < 0) ++npix;
* do
* {
* dist1_start -= m_di.dx_start();
* dist2_start += m_di.dx_start();
* if(dist1_start < 0) ++npix;
* if(dist2_start < 0) ++npix;
++dy;
* }
* while(m_dist_pos[dy] <= m_width);
* if(npix == 0) break;
*
* npix = 0;
* }
* while(--m_step >= -m_max_extent);
* }
* m_li.adjust_forward();
* m_step -= m_max_extent;
*/
}
//typedef Renderer renderer_type;
//typedef line_interpolator_aa_base<Renderer> base_type;
//---------------------------------------------------------------------
public line_interpolator_aa1(OutlineRenderer ren, line_parameters lp,
int sx, int sy)
:
base(ren, lp)
{
m_di = new distance_interpolator2(lp.x1, lp.y1, lp.x2, lp.y2, sx, sy,
lp.x1 & ~LineAABasics.line_subpixel_mask, lp.y1 & ~LineAABasics.line_subpixel_mask);
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()) >> LineAABasics.line_subpixel_shift;
if (lp.inc > 0) m_di.dec_y(base.m_x - base.m_old_x);
else m_di.inc_y(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.dy_start();
dist2_start -= m_di.dy_start();
if (dist1_start < 0) ++npix;
if (dist2_start < 0) ++npix;
++dx;
}
while (base.m_dist[dx] <= base.m_width);
--base.m_step;
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()) >> LineAABasics.line_subpixel_shift;
if (lp.inc > 0) m_di.dec_x(base.m_y - base.m_old_y);
else m_di.inc_x(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.dx_start();
dist2_start += m_di.dx_start();
if (dist1_start < 0) ++npix;
if (dist2_start < 0) ++npix;
++dy;
}
while (base.m_dist[dy] <= base.m_width);
--base.m_step;
if (npix == 0) break;
npix = 0;
}
while (base.m_step >= -base.m_max_extent);
}
base.m_li.adjust_forward();
}
public line_interpolator_aa_base(OutlineRenderer ren, line_parameters lp)
{
m_lp = lp;
m_li = new dda2_line_interpolator(lp.vertical ? LineAABasics.line_dbl_hr(lp.x2 - lp.x1) : LineAABasics.line_dbl_hr(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 >> LineAABasics.line_subpixel_shift);
m_y = (lp.y1 >> LineAABasics.line_subpixel_shift);
m_old_x = (m_x);
m_old_y = (m_y);
m_count = ((lp.vertical ? Math.Abs((lp.y2 >> LineAABasics.line_subpixel_shift) - m_y) :
Math.Abs((lp.x2 >> LineAABasics.line_subpixel_shift) - m_x)));
m_width = (ren.subpixel_width());
//m_max_extent(m_width >> (line_subpixel_shift - 2));
m_max_extent = ((m_width + LineAABasics.line_subpixel_mask) >> LineAABasics.line_subpixel_shift);
m_step = 0;
dda2_line_interpolator li = new dda2_line_interpolator(0,
lp.vertical ? (lp.dy << LineAABasics.line_subpixel_shift) : (lp.dx << LineAABasics.line_subpixel_shift),
lp.len);
int i;
int stop = m_width + LineAABasics.line_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 void line3_no_clip(line_parameters lp,
int sx, int sy, int ex, int ey)
{
if (lp.len > LineAABasics.line_max_length)
{
line_parameters lp1, lp2;
lp.divide(out lp1, out 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_aa3 li = new line_interpolator_aa3(this, lp, sx, sy, ex, ey);
if (li.vertical())
{
while (li.step_ver()) ;
}
else
{
while (li.step_hor()) ;
}
}
public override void line0(line_parameters lp)
{
if (doClipping)
{
int x1 = lp.x1;
int y1 = lp.y1;
int x2 = lp.x2;
int y2 = lp.y2;
int flags = ClipLiangBarsky.clip_line_segment(ref x1, ref y1, ref x2, ref y2, clippingRectangle);
if ((flags & 4) == 0)
{
if (flags != 0)
{
line_parameters lp2 = new line_parameters(x1, y1, x2, y2,
agg_basics.uround(agg_math.calc_distance(x1, y1, x2, y2)));
line0_no_clip(lp2);
}
else
{
line0_no_clip(lp);
}
}
}
else
{
line0_no_clip(lp);
}
}
public abstract void line3(line_parameters lp, int sx, int sy, int ex, int ey);
public override void line2(line_parameters lp, int ex, int ey)
{
}
public override void line1(line_parameters lp, int sx, int sy)
{
}
public override void line0(line_parameters lp)
{
}
//---------------------------------------------------------------------
public line_interpolator_image(renderer_outline_aa ren, line_parameters lp,
int sx, int sy, int ex, int ey,
int pattern_start,
double scale_x)
{
throw new NotImplementedException();
/*
m_lp=(lp);
m_li = new dda2_line_interpolator(lp.vertical ? LineAABasics.line_dbl_hr(lp.x2 - lp.x1) :
LineAABasics.line_dbl_hr(lp.y2 - lp.y1),
lp.vertical ? Math.Abs(lp.y2 - lp.y1) :
Math.Abs(lp.x2 - lp.x1) + 1);
m_di = new distance_interpolator4(lp.x1, lp.y1, lp.x2, lp.y2, sx, sy, ex, ey, lp.len, scale_x,
lp.x1 & ~LineAABasics.line_subpixel_mask, lp.y1 & ~LineAABasics.line_subpixel_mask);
m_ren=ren;
m_x = (lp.x1 >> LineAABasics.line_subpixel_shift);
m_y = (lp.y1 >> LineAABasics.line_subpixel_shift);
m_old_x=(m_x);
m_old_y=(m_y);
m_count = ((lp.vertical ? Math.Abs((lp.y2 >> LineAABasics.line_subpixel_shift) - m_y) :
Math.Abs((lp.x2 >> LineAABasics.line_subpixel_shift) - m_x)));
m_width=(ren.subpixel_width());
//m_max_extent(m_width >> (LineAABasics.line_subpixel_shift - 2));
m_max_extent = ((m_width + LineAABasics.line_subpixel_scale) >> LineAABasics.line_subpixel_shift);
m_start=(pattern_start + (m_max_extent + 2) * ren.pattern_width());
m_step=(0);
dda2_line_interpolator li = new dda2_line_interpolator(0, lp.vertical ?
(lp.dy << LineAABasics.line_subpixel_shift) :
(lp.dx << LineAABasics.line_subpixel_shift),
lp.len);
uint i;
int stop = m_width + LineAABasics.line_subpixel_scale * 2;
for(i = 0; i < max_half_width; ++i)
{
m_dist_pos[i] = li.y();
if(m_dist_pos[i] >= stop) break;
++li;
}
m_dist_pos[i] = 0x7FFF0000;
int dist1_start;
int dist2_start;
int npix = 1;
if(lp.vertical)
{
do
{
--m_li;
m_y -= lp.inc;
m_x = (m_lp.x1 + m_li.y()) >> LineAABasics.line_subpixel_shift;
if(lp.inc > 0) m_di.dec_y(m_x - m_old_x);
else m_di.inc_y(m_x - m_old_x);
m_old_x = m_x;
dist1_start = dist2_start = m_di.dist_start();
int dx = 0;
if(dist1_start < 0) ++npix;
do
{
dist1_start += m_di.dy_start();
dist2_start -= m_di.dy_start();
if(dist1_start < 0) ++npix;
if(dist2_start < 0) ++npix;
++dx;
}
while(m_dist_pos[dx] <= m_width);
if(npix == 0) break;
npix = 0;
}
while(--m_step >= -m_max_extent);
}
else
{
do
{
--m_li;
m_x -= lp.inc;
m_y = (m_lp.y1 + m_li.y()) >> LineAABasics.line_subpixel_shift;
if(lp.inc > 0) m_di.dec_x(m_y - m_old_y);
else m_di.inc_x(m_y - m_old_y);
m_old_y = m_y;
dist1_start = dist2_start = m_di.dist_start();
int dy = 0;
if(dist1_start < 0) ++npix;
do
{
dist1_start -= m_di.dx_start();
dist2_start += m_di.dx_start();
if(dist1_start < 0) ++npix;
if(dist2_start < 0) ++npix;
++dy;
}
while(m_dist_pos[dy] <= m_width);
if(npix == 0) break;
npix = 0;
}
while(--m_step >= -m_max_extent);
}
m_li.adjust_forward();
m_step -= m_max_extent;
*/
}
public override void line3(line_parameters 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(line_parameters lp, int sx, int sy)
{
}
public void line3_no_clip(line_parameters 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 bool same_diagonal_quadrant(line_parameters lp)
{
return s_diagonal_quadrant[octant] == s_diagonal_quadrant[lp.octant];
}
public void line0_no_clip(line_parameters lp)
{
if (lp.len > LineAABasics.line_max_length)
{
line_parameters lp1, lp2;
lp.divide(out lp1, out lp2);
line0_no_clip(lp1);
line0_no_clip(lp2);
return;
}
line_interpolator_aa0 li = new line_interpolator_aa0(this, lp);
if (li.count() != 0)
{
if (li.vertical())
{
while (li.step_ver()) ;
}
else
{
while (li.step_hor()) ;
}
}
}
//---------------------------------------------------------------------
public void divide(out line_parameters lp1, out line_parameters 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.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 void line2_no_clip(line_parameters lp, int ex, int ey)
{
if (lp.len > LineAABasics.line_max_length)
{
line_parameters lp1, lp2;
lp.divide(out lp1, out lp2);
line2_no_clip(lp1, lp1.x2 + (lp1.y2 - lp1.y1), lp1.y2 - (lp1.x2 - lp1.x1));
line2_no_clip(lp2, (lp.x2 + ex) >> 1, (lp.y2 + ey) >> 1);
return;
}
LineAABasics.fix_degenerate_bisectrix_end(lp, ref ex, ref ey);
line_interpolator_aa2 li = new line_interpolator_aa2(this, lp, ex, ey);
if (li.vertical())
{
while (li.step_ver()) ;
}
else
{
while (li.step_hor()) ;
}
}
public static void bisectrix(line_parameters l1,
line_parameters 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) < line_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 = agg_basics.iround(tx);
y = agg_basics.iround(ty);
}
public override void line3(line_parameters 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.clip_line_segment(ref x1, ref y1, ref x2, ref y2, clippingRectangle);
if ((flags & 4) == 0)
{
if (flags != 0)
{
line_parameters lp2 = new line_parameters(x1, y1, x2, y2,
agg_basics.uround(agg_math.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;
}
}
line3_no_clip(lp2, sx, sy, ex, ey);
}
else
{
line3_no_clip(lp, sx, sy, ex, ey);
}
}
}
else
{
line3_no_clip(lp, sx, sy, ex, ey);
}
}
public static void fix_degenerate_bisectrix_end(line_parameters lp,
ref int x, ref int y)
{
int d = agg_basics.iround(((double)(x - lp.x2) * (double)(lp.y2 - lp.y1) -
(double)(y - lp.y2) * (double)(lp.x2 - lp.x1)) / lp.len);
if (d < line_subpixel_scale / 2)
{
x = lp.x2 + (lp.y2 - lp.y1);
y = lp.y2 - (lp.x2 - lp.x1);
}
}
//typedef Renderer renderer_type;
//typedef line_interpolator_aa_base<Renderer> base_type;
//---------------------------------------------------------------------
public line_interpolator_aa0(OutlineRenderer ren, line_parameters lp)
: base(ren, lp)
{
m_di = new distance_interpolator1(lp.x1, lp.y1, lp.x2, lp.y2,
lp.x1 & ~LineAABasics.line_subpixel_mask, lp.y1 & ~LineAABasics.line_subpixel_mask);
m_li.adjust_forward();
}
//typedef Renderer renderer_type;
//typedef line_interpolator_aa_base<Renderer> base_type;
//---------------------------------------------------------------------
public line_interpolator_aa2(OutlineRenderer ren, line_parameters lp,
int ex, int ey)
:
base(ren, lp)
{
m_di = new distance_interpolator2(lp.x1, lp.y1, lp.x2, lp.y2, ex, ey,
lp.x1 & ~LineAABasics.line_subpixel_mask, lp.y1 & ~LineAABasics.line_subpixel_mask,
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);
draw_vars dv = new draw_vars();
line_aa_vertex v;
int x1;
int y1;
int x2;
int y2;
int lprev;
if (close_polygon)
{
if (m_src_vertices.size() >= 3)
{
dv.idx = 2;
v = m_src_vertices[m_src_vertices.size() - 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;
line_parameters prev = new line_parameters(x1, y1, x2, y2, lprev);
v = m_src_vertices[1];
dv.x1 = v.x;
dv.y1 = v.y;
dv.lnext = v.len;
dv.curr = new line_parameters(x2, y2, dv.x1, dv.y1, dv.lcurr);
v = m_src_vertices[dv.idx];
dv.x2 = v.x;
dv.y2 = v.y;
dv.next = new line_parameters(dv.x1, dv.y1, dv.x2, dv.y2, dv.lnext);
dv.xb1 = 0;
dv.yb1 = 0;
dv.xb2 = 0;
dv.yb2 = 0;
switch (m_line_join)
{
case outline_aa_join_e.outline_no_join:
dv.flags = 3;
break;
case outline_aa_join_e.outline_miter_join:
case outline_aa_join_e.outline_round_join:
dv.flags =
(prev.diagonal_quadrant() == dv.curr.diagonal_quadrant() ? 1 : 0) |
((dv.curr.diagonal_quadrant() == dv.next.diagonal_quadrant() ? 1 : 0) << 1);
break;
case outline_aa_join_e.outline_miter_accurate_join:
dv.flags = 0;
break;
}
if ((dv.flags & 1) == 0 && m_line_join != outline_aa_join_e.outline_round_join)
{
LineAABasics.bisectrix(prev, dv.curr, out dv.xb1, out dv.yb1);
}
if ((dv.flags & 2) == 0 && m_line_join != outline_aa_join_e.outline_round_join)
{
LineAABasics.bisectrix(dv.curr, dv.next, out dv.xb2, out dv.yb2);
}
draw(ref dv, 0, m_src_vertices.size());
}
}
else
{
switch (m_src_vertices.size())
{
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;
line_parameters lp = new line_parameters(x1, y1, x2, y2, lprev);
if (m_round_cap)
{
m_ren.semidot(cmp_dist_start, 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(cmp_dist_end, 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;
line_parameters lp1 = new line_parameters(x1, y1, x2, y2, lprev);
line_parameters lp2 = new line_parameters(x2, y2, x3, y3, lnext);
if (m_round_cap)
{
m_ren.semidot(cmp_dist_start, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
}
if (m_line_join == outline_aa_join_e.outline_round_join)
{
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
{
LineAABasics.bisectrix(lp1, lp2, out dv.xb1, out dv.yb1);
m_ren.line3(lp1, x1 + (y2 - y1), y1 - (x2 - x1),
dv.xb1, dv.yb1);
m_ren.line3(lp2, dv.xb1, dv.yb1,
x3 + (y3 - y2), y3 - (x3 - x2));
}
if (m_round_cap)
{
m_ren.semidot(cmp_dist_end, 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;
line_parameters prev = new line_parameters(x1, y1, x2, y2, lprev);
v = m_src_vertices[2];
dv.x1 = v.x;
dv.y1 = v.y;
dv.lnext = v.len;
dv.curr = new line_parameters(x2, y2, dv.x1, dv.y1, dv.lcurr);
v = m_src_vertices[dv.idx];
dv.x2 = v.x;
dv.y2 = v.y;
dv.next = new line_parameters(dv.x1, dv.y1, dv.x2, dv.y2, dv.lnext);
dv.xb1 = 0;
dv.yb1 = 0;
dv.xb2 = 0;
dv.yb2 = 0;
switch (m_line_join)
{
case outline_aa_join_e.outline_no_join:
dv.flags = 3;
break;
case outline_aa_join_e.outline_miter_join:
case outline_aa_join_e.outline_round_join:
dv.flags =
(prev.diagonal_quadrant() == dv.curr.diagonal_quadrant() ? 1 : 0) |
((dv.curr.diagonal_quadrant() == dv.next.diagonal_quadrant() ? 1 : 0) << 1);
break;
case outline_aa_join_e.outline_miter_accurate_join:
dv.flags = 0;
break;
}
if (m_round_cap)
{
m_ren.semidot(cmp_dist_start, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
}
if ((dv.flags & 1) == 0)
{
if (m_line_join == outline_aa_join_e.outline_round_join)
{
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),
dv.curr.x1 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y1 - (dv.curr.x2 - dv.curr.x1));
}
else
{
LineAABasics.bisectrix(prev, dv.curr, out dv.xb1, out dv.yb1);
m_ren.line3(prev, x1 + (y2 - y1), y1 - (x2 - x1),
dv.xb1, dv.yb1);
}
}
else
{
m_ren.line1(prev,
x1 + (y2 - y1),
y1 - (x2 - x1));
}
if ((dv.flags & 2) == 0 && m_line_join != outline_aa_join_e.outline_round_join)
{
LineAABasics.bisectrix(dv.curr, dv.next, out dv.xb2, out dv.yb2);
}
draw(ref dv, 1, m_src_vertices.size() - 2);
if ((dv.flags & 1) == 0)
{
if (m_line_join == outline_aa_join_e.outline_round_join)
{
m_ren.line3(dv.curr,
dv.curr.x1 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y1 - (dv.curr.x2 - dv.curr.x1),
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
}
else
{
m_ren.line3(dv.curr, dv.xb1, dv.yb1,
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
}
}
else
{
m_ren.line2(dv.curr,
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
}
if (m_round_cap)
{
m_ren.semidot(cmp_dist_end, dv.curr.x2, dv.curr.y2,
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
}
}
break;
}
}
m_src_vertices.remove_all();
}
public abstract void line0(line_parameters lp);
public override void line3(line_parameters 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 line1(line_parameters lp, int sx, int sy);
public override void line0(line_parameters lp)
{
}
public abstract void line2(line_parameters lp, int ex, int ey);
public override void line2(line_parameters lp, int ex, int ey)
{
}
//---------------------------------------------------------------------
public bool same_diagonal_quadrant(line_parameters lp)
{
return(s_diagonal_quadrant[octant] == s_diagonal_quadrant[lp.octant]);
}