public Connection(ConvexPolyForm startPoly, EdgeIndex startEdge, ConvexPolyForm endPoly, EdgeIndex endEdge)
{
StartPoly = startPoly;
StartEdgeIndex = startEdge;
EndPoly = endPoly;
EndEdgeIndex = endEdge;
}
public Connection(ConvexPolyForm startPoly, EdgeIndex startEdge, ConvexPolyForm endPoly, EdgeIndex endEdge)
{
StartPoly = startPoly;
StartEdgeIndex = startEdge;
EndPoly = endPoly;
EndEdgeIndex = endEdge;
}
private void RenderConnections()
{
// Render the connections between the edges
foreach (Connection connection in _connections)
{
Point firstStart = connection.StartPoly.Vertices[connection.StartEdgeIndex.Start];
Point firstEnd = connection.StartPoly.Vertices[connection.StartEdgeIndex.End];
float length1 = EdgeIndex.Length(firstStart, firstEnd);
Point secondStart = connection.EndPoly.Vertices[connection.EndEdgeIndex.Start];
Point secondEnd = connection.EndPoly.Vertices[connection.EndEdgeIndex.End];
float length2 = EdgeIndex.Length(secondStart, secondEnd);
if (length1 <= length2)
{
Point point = LineSegment.GetMiddle(firstStart, firstEnd);
PrimitiveDrawer.DrawFilledCircle(point, 15, new Color(0, 0, 1, 1));
}
else
{
Point point = LineSegment.GetMiddle(secondStart, secondEnd);
PrimitiveDrawer.DrawFilledCircle(point, 15, new Color(0, 0, 1, 1));
}
}
}
internal void TryAddVert(Point mousePos)
{
EdgeIndex edgeIndex = GetClosestEdge(mousePos);
_vertices.Insert(edgeIndex.End, mousePos);
GenerateEdges();
if (IsConcave())
{
_vertices.RemoveAt(edgeIndex.End);
GenerateEdges();
}
}
private void RenderCrossedEdges()
{
foreach (var tuple in _connectIntersectedEdges)
{
ConvexPolyForm poly = tuple.Item1;
EdgeIndex edge = tuple.Item2;
Point start = poly.Vertices[edge.Start];
Point end = poly.Vertices[edge.End];
GLUtil.SetColor(new Color(0, 0, 1, 1));
PrimitiveDrawer.DrawLine2d(start, end);
}
}
public EdgeIndex GetClosestEdge(Point p, out float minDistance)
{
minDistance = float.MaxValue;
EdgeIndex current = new EdgeIndex();
foreach (EdgeIndex edge in _edges)
{
Point start = _vertices[edge.Start];
Point end = _vertices[edge.End];
float distance = (float)EdgeIndex.GetDistance(start, end, p);
if (distance < minDistance)
{
current = edge;
minDistance = distance;
}
}
return current;
}
private void FindIntersectedEdges(Point start, Point end)
{
foreach (ConvexPolyForm poly in _convexPolyForm)
{
foreach (EdgeIndex edgeIndex in poly.Edges)
{
Point localStart = poly.Vertices[edgeIndex.Start];
Point localEnd = poly.Vertices[edgeIndex.End];
Point collisionPoint;
bool collision = EdgeIndex.Intersects(start, end, localStart, localEnd, out collisionPoint);
if (collision)
{
_connectIntersectedEdges.Add(new Tuple <ConvexPolyForm, EdgeIndex>(poly, edgeIndex));
}
}
}
}
public EdgeIndex GetClosestEdge(Point p, out float minDistance)
{
minDistance = float.MaxValue;
EdgeIndex current = new EdgeIndex();
foreach (EdgeIndex edge in _edges)
{
Point start = _vertices[edge.Start];
Point end = _vertices[edge.End];
float distance = (float)EdgeIndex.GetDistance(start, end, p);
if (distance < minDistance)
{
current = edge;
minDistance = distance;
}
}
return(current);
}
private void RenderNormals(ConvexPolyForm poly)
{
GLUtil.SetColor(new Color(0, 1, 0, 1));
foreach (EdgeIndex edge in poly.Edges)
{
Point start = poly.Vertices[edge.Start];
Point end = poly.Vertices[edge.End];
Point middle = LineSegment.GetMiddle(start, end);
Point normal = EdgeIndex.GetLineNormal(start, end);
Gl.glBegin(Gl.GL_LINES);
{
GLUtil.DrawPointVertex(middle);
GLUtil.DrawPointVertex(new Point(middle.X + (normal.X * 50), middle.Y + (normal.Y * 50)));
}
Gl.glEnd();
}
}
public LineSegment GetShortestEdge()
{
Point firstStart = StartPoly.Vertices[StartEdgeIndex.Start];
Point firstEnd = StartPoly.Vertices[StartEdgeIndex.End];
float length1 = EdgeIndex.Length(firstStart, firstEnd);
Point secondStart = EndPoly.Vertices[EndEdgeIndex.Start];
Point secondEnd = EndPoly.Vertices[EndEdgeIndex.End];
float length2 = EdgeIndex.Length(secondStart, secondEnd);
if (length1 <= length2)
{
return(new LineSegment(firstStart, firstEnd));
}
else
{
return(new LineSegment(secondStart, secondEnd));
}
}
private void RenderNearestEdge(ConvexPolyForm poly)
{
EdgeIndex edge = poly.GetClosestEdge(_input.Mouse.Position);
GLUtil.SetColor(new Color(1, 0, 0, 1));
Gl.glBegin(Gl.GL_LINE_STRIP);
{
GLUtil.DrawPointVertex(poly.Vertices[edge.Start]);
GLUtil.DrawPointVertex(poly.Vertices[edge.End]);
}
Gl.glEnd();
// Render closest point
Point p = EdgeIndex.GetClosestPoint(poly.Vertices[edge.Start], poly.Vertices[edge.End], _input.Mouse.Position);
Gl.glBegin(Gl.GL_POINTS);
{
GLUtil.DrawPointVertex(p);
}
Gl.glEnd();
}