/// <summary>
/// Test if a point touches a multi-segment line.
/// </summary>
/// <param name="testPoint">Point to test.</param>
/// <param name="width">Test width of line.</param>
/// <param name="bounds">Bounding rectagle of all points.</param>
/// <param name="line"></param>
/// <returns></returns>
public static bool HitTestLine(RawVector2 testPoint, float width, SharpDX.RectangleF bounds, IList <RawVector2> line)
{
// if we are outside the bounds of the rectangle containing the line, false
// TODO: fix bounds test
// if (!bounds.Contains(testPoint)) return false;
// if the line doesn't have any segments, return false
if (line.Count < 2)
{
return(false);
}
// test each segment
for (int i = 0; i < line.Count - 1; i++)
{
if (HitTestLineSegment(testPoint, line[i], line[i + 1], width))
{
return(true);
}
}
// no segments within range
return(false);
}
public static void CalculateCoords(LineProxy proxy, MM_Line line, int zoomLevel)
{
proxy.Coordinates.Clear();
//Ignore invalid lines
if (float.IsNaN(line.CenterLngLat.X))
{
return;
}
// flip the line coords
if (line.Coordinates.Count > 0 && (line.Substation2.LngLat == line.Coordinates[0] || line.Substation1.LngLat == line.Coordinates[line.Coordinates.Count - 1]))
{
line.Coordinates.Reverse();
}
if (line.Coordinates.Count == 0)
{
line.Coordinates.Add(line.Substation1.LngLat);
line.Coordinates.Add(line.Substation2.LngLat);
}
//Determine if we need to flip coordinates because the substations have changed
if (line.Coordinates.Count > 0 && (line.Substation2.LngLat == line.Coordinates[0] || line.Substation1.LngLat == line.Coordinates[line.Coordinates.Count - 1]))
{
line.Coordinates.Reverse();
}
Vector2 lastPoint = Vector2.Zero;
Vector2 aggPoint = Vector2.Zero;
float minX = float.MaxValue;
float minY = float.MaxValue;
float maxY = float.MinValue;
float maxX = float.MinValue;
float length = 0;
if (proxy.Segments == null)
{
proxy.Segments = new List <LineSegment>();
}
else
{
proxy.Segments.Clear();
}
if (line.Coordinates.Count > 0)
{
for (int i = 0; i < line.Coordinates.Count; i++)
{
PointF Pt = line.Coordinates[i];
Vector2 currentPoint = MM_Coordinates.LngLatToScreenVector2(Pt, zoomLevel);
if (lastPoint.IsZero || lastPoint.X != currentPoint.X || lastPoint.Y != currentPoint.Y)
{
aggPoint.X += currentPoint.X;
aggPoint.Y += currentPoint.Y;
}
proxy.Coordinates.Add(currentPoint);
if (currentPoint.X < minX)
{
minX = currentPoint.X;
}
if (currentPoint.X > maxX)
{
maxX = currentPoint.X;
}
if (currentPoint.Y < minY)
{
minY = currentPoint.Y;
}
if (currentPoint.Y > maxY)
{
maxY = currentPoint.Y;
}
if (i > 0)
{
var segment = new LineSegment(lastPoint, currentPoint);
proxy.Segments.Add(segment);
length += segment.length;
}
lastPoint = currentPoint;
}
}
proxy.Length = length;
var bounds = new SharpDX.RectangleF(minX, minY, maxX - minX, maxY - minY);
proxy.Bounds = bounds;
lastPoint = proxy.Coordinates[proxy.Coordinates.Count - 1];
proxy.Center = new Vector2(aggPoint.X / (float)proxy.Coordinates.Count, aggPoint.Y / (float)proxy.Coordinates.Count);
var lineAngle = (float)Math.Atan2(proxy.Coordinates[0].Y - lastPoint.Y, proxy.Coordinates[0].X - lastPoint.X);
// if (lineAngle < 0)
// {
// lineAngle += (float)(Math.PI * 2);
// }
if (lineAngle > (float)Math.PI / 2f)
{
lineAngle = (float)lineAngle - (float)Math.PI;
proxy.FlipSides = true;
}
else if (lineAngle < (float)Math.PI / -2f)
{
lineAngle = (float)lineAngle - (float)Math.PI;
proxy.FlipSides = true;
}
else
{
proxy.FlipSides = false;
}
//lineAngle *= 180f / (float)Math.PI;
proxy.Angle = lineAngle;
}