private static void FillLineSegments(ObjModel model, IList <string> args)
{
if (args.Count < 2)
{
return;
}
var segments = new LineSegments();
foreach (var a in args)
{
var numStrs = a.Trim().Split('/');
var vIndex = FindIndex(model.Positions, numStrs[0]);
uint?vtIndex = null;
if (numStrs.Length == 2)
{
if (!String.IsNullOrEmpty(numStrs[1]))
{
vtIndex = FindIndex(model.TextureCoords, numStrs[1]);
}
}
segments.Vertices.Add(new LineVertex(vIndex, vtIndex));
}
if (segments.Vertices.Count > 0)
{
model.Lines.Add(segments);
}
}
// construct a pathfigure from the line segments
static PathFigure FromPointCollection(LineSegments ls)
{
var pc = new PointCollection(ls);
var pls = new PolyLineSegment(pc, true);
var psc = new PathSegmentCollection();
psc.Add(pls);
return(new PathFigure(pc.First(), psc, false));
}
/// <summary>
/// creates or adds a segment to the collections
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="startOffset"></param>
/// <param name="endOffset"></param>
public void CreateOrAddSegment(ComplexGeometry geometry,
Dictionary <Point, LineSegments> segments,
int x, int y, Vector startOffset, Vector endOffset)
{
Point ptMiddle = new Point(x, y);
Point startPoint = ptMiddle + startOffset;
Point endPoint = ptMiddle + endOffset;
if (segments.ContainsKey(startPoint))
{
var pc = segments[startPoint];
segments.Remove(startPoint);
if (pc.First() == startPoint)
{
pc.Insert(0, endPoint);
}
else if (pc.Last() == startPoint)
{
pc.Add(endPoint);
}
if (!segments.ContainsKey(endPoint))
{
segments.Add(endPoint, pc);
}
}
else if (segments.ContainsKey(endPoint))
{
var pc = segments[endPoint];
segments.Remove(endPoint);
if (pc.First() == endPoint)
{
pc.Insert(0, startPoint);
}
else if (pc.Last() == endPoint)
{
pc.Add(startPoint);
}
if (!segments.ContainsKey(startPoint))
{
segments.Add(startPoint, pc);
}
}
else
{
var pc = new LineSegments();
pc.Add(startPoint);
pc.Add(endPoint);
segments.Add(startPoint, pc);
segments.Add(endPoint, pc);
geometry.Add(pc);
}
}
void createRope(VerletWorld world)
{
// create an array of points for our rope
var linePoints = new Vector2[10];
for (var i = 0; i < 10; i++)
{
linePoints[i] = new Vector2(30 * i + 50, 10);
}
var line = new LineSegments(linePoints, 0.3f)
.pinParticleAtIndex(0);
world.addComposite(line);
}
internal override int ReadParameters(List <string> parameters, IgesReaderBinder binder)
{
var index = 0;
var segmentCount = Integer(parameters, ref index);
ArrowHeight = Double(parameters, ref index);
ArrowWidth = Double(parameters, ref index);
var zDepth = Double(parameters, ref index);
var x = Double(parameters, ref index);
var y = Double(parameters, ref index);
ArrowheadCoordinates = new Point3D(x, y, zDepth);
for (int i = 0; i < segmentCount; i++)
{
x = Double(parameters, ref index);
y = Double(parameters, ref index);
LineSegments.Add(new Point3D(x, y, zDepth));
}
return(segmentCount * 2 + 6);
}
