private void CreateAnnotations(List <Annotation_PointToPoint> list)
{
foreach (Annotation_PointToPoint a in list)
{
double length = (a.pt2 - a.pt1).magnitude();
string label = new Inches(length).GetStringWithoutUnits();
double extra = length - label.Length * a.size - 1;
if (extra < 0)
{
extra = 0;
}
Point3D p1 = new Point3D(a.pt1.x, a.pt1.y, a.pt1.z);
Point3D p2 = new Point3D(a.pt2.x, a.pt2.y, a.pt2.z);
Vector3D over = p2 - p1;
over.Normalize();
Vector3D up = new Vector3D(a.dir.x, a.dir.y, a.dir.z);
ScreenSpaceLines3D ss = new ScreenSpaceLines3D();
ss.Color = Colors.Black;
ss.Thickness = LineThickness;
ss.Points.Add(p1 + up / 2);
ss.Points.Add(p1 + up * (a.dist + a.size));
ss.Points.Add(p2 + up / 2);
ss.Points.Add(p2 + up * (a.dist + a.size));
if (extra > 0)
{
ss.Points.Add(p1 + up * (a.dist + a.size / 2));
ss.Points.Add(p1 + up * (a.dist + a.size / 2) + over * (extra / 2));
ss.Points.Add(p2 + up * (a.dist + a.size / 2));
ss.Points.Add(p2 + up * (a.dist + a.size / 2) - over * (extra / 2));
}
vp.Children.Add(ss);
ModelVisual3D mv3d = wpfmisc.CreateTextLabel3D(label, Brushes.Black, true, a.size,
p1 + over * length / 2 + up * (a.dist + a.size / 2),
over, up);
vp.Children.Add(mv3d);
}
}