public VsSegment(Segment3D s, Color c)
{
type = "VsSegment";
col = c;
colPen = new Pen(col);
seg = s;
}
public VsSegment(Vector3D p0, Vector3D p1, Color c)
{
type = "VsSegment";
col = c;
colPen = new Pen(col);
seg = new Segment3D(p0, p1);
}
public VsSegment()
{
type = "VsSegment";
col = Color.Black;
colPen = new Pen(col);
seg = new Segment3D();
}
public VsSegment(double x0, double y0, double z0, double x1, double y1,
double z1, Color c)
{
type = "VsSegment";
col = c;
colPen = new Pen(col);
seg = new Segment3D(x0, y0, z0, x1, y1, z1);
}
public VsSegment(double x0, double y0, double z0, double x1, double y1,
double z1, int r, int g, int b)
{
type = "VsSegment";
col = Color.FromArgb(r, g, b);
colPen = new Pen(col);
seg = new Segment3D(x0, y0, z0, x1, y1, z1);
}
public Segment3D Vs_line_clip_3df(Segment3D seg)
{
double xs = seg.p0.x;
double ys = seg.p0.y;
double zs = seg.p0.z;
double xe = seg.p1.x;
double ye = seg.p1.y;
double ze = seg.p1.z;
Segment3D ret = new Segment3D();
double x0;
double y0;
double z0;
double x1;
double y1;
double z1;
if (zs <= ze)
{
x0 = xs;
y0 = ys;
z0 = zs;
x1 = xe;
y1 = ye;
z1 = ze;
}
else
{
x0 = xe;
y0 = ye;
z0 = ze;
x1 = xs;
y1 = ys;
z1 = zs;
}
if (z1 < 0.10000000000000001D)
{
return(null);
}
if (z0 >= 0.10000000000000001D)
{
ret.SetP0(new Vector3D(seg.p0));
ret.SetP1(new Vector3D(seg.p1));
return(ret);
}
else
{
double t = (0.10000000000000001D - z0) / (z1 - z0);
x0 += t * (x1 - x0);
y0 += t * (y1 - y0);
z0 = 0.10000000000000001D;
ret.SetP0(new Vector3D(x0, y0, z0));
ret.SetP1(new Vector3D(x1, y1, z1));
return(ret);
}
}
public VsSegment(VsSegment s)
{
type = "VsSegment";
col = s.col;
colPen = new Pen(col);
if (s.seg != null)
{
seg = new Segment3D(s.seg);
}
else
{
seg = null;
}
}
public Segment3D Vs_line_clip_2d(Segment3D org)
{
Segment3D ret = new Segment3D();
double y;
double x = y = 0.0D;
double cx1 = vp_xmin - 0.4D;
double cy1 = vp_ymin - 0.4D;
double cx2 = vp_xmax + 0.4D;
double cy2 = vp_ymax + 0.4D;
double x1 = org.p0.x;
double y1 = org.p0.y;
double x2 = org.p1.x;
double y2 = org.p1.y;
int c1 = Make_4bit_code(x1, y1, cx1, cy1, cx2, cy2);
int c2 = Make_4bit_code(x2, y2, cx1, cy1, cx2, cy2);
for (int i = 0; i < 100; i++)
{
if ((c1 | c2) == 0)
{
ret.p0.x = x1;
ret.p0.y = y1;
ret.p0.z = 0.0D;
ret.p1.x = x2;
ret.p1.y = y2;
ret.p1.z = 0.0D;
return(ret);
}
if ((c1 & c2) != 0)
{
return(null);
}
int c;
if (c1 != 0)
{
c = c1;
}
else
{
c = c2;
}
if (x1 == x2)
{
if (y2 < cy1)
{
y = cy1;
}
else if (y2 > cy2)
{
y = cy2;
}
if (y1 < cy1)
{
y = cy1;
}
else if (y1 > cy2)
{
y = cy2;
}
x = x1;
}
else if ((c & 1) != 0)
{
y = y1 + ((y2 - y1) * (cx1 - x1)) / (x2 - x1);
x = cx1;
}
else if ((c & 2) != 0)
{
y = y1 + ((y2 - y1) * (cx2 - x1)) / (x2 - x1);
x = cx2;
}
else if (y1 == y2)
{
if (x2 < cx1)
{
x = cx1;
}
else if (x2 > cx2)
{
x = cx2;
}
if (x1 < cx1)
{
x = cx1;
}
else if (x1 > cx2)
{
x = cx2;
}
y = y1;
}
else if ((c & 4) != 0)
{
x = x1 + ((x2 - x1) * (cy1 - y1)) / (y2 - y1);
y = cy1;
}
else if ((c & 8) != 0)
{
x = x1 + ((x2 - x1) * (cy2 - y1)) / (y2 - y1);
y = cy2;
}
if (c == c1)
{
x1 = x;
y1 = y;
c1 = Make_4bit_code(x, y, cx1, cy1, cx2, cy2);
}
else
{
x2 = x;
y2 = y;
c2 = Make_4bit_code(x, y, cx1, cy1, cx2, cy2);
}
}
return(null);
}
public Segment3D Project(Projector proj)
{
Segment3D ret = new Segment3D(proj.Project(p0), proj.Project(p1));
return(ret);
}
public Segment3D(Segment3D seg)
{
p0 = new Vector3D(seg.p0);
p1 = new Vector3D(seg.p1);
}
