/// <summary>
/// Find the correct position to add a node.
/// </summary>
/// <param name="camera"></param>
/// <param name="from"></param>
/// <returns></returns>
private Vector3 AddPosition(Camera camera, WayPoint.Node from)
{
bool asRoad = false;
float height = from.RenderPosition(asRoad).Z;
Vector3 hit = MouseEdit.FindAtHeight(camera, MouseInput.Position, height);
return(hit);
}
/// <summary>
/// Drag the current node/edge/path by mouse movement. Includes raise/lower
/// as well as horizontal drag.
/// </summary>
/// <param name="camera"></param>
private void DoDrag(Camera camera)
{
Vector3 delta = Vector3.Zero;
if (mode == Mode.Drag)
{
Vector3 oldPos = MouseEdit.FindAtHeight(camera, MouseInput.PrevPosition, height);
Vector3 newPos = MouseEdit.FindAtHeight(camera, MouseInput.Position, height);
delta = newPos - oldPos;
}
if (mode == Mode.Raise)
{
float dheight = MouseInput.Position.Y - MouseInput.PrevPosition.Y;
float kUpDownSpeed = -0.002f;
dheight *= kUpDownSpeed;
Vector3 dragPos = camera.ActualFrom;
bool asRoad = false;
if (node != null)
{
dragPos = node.RenderPosition(asRoad);
}
if (edge != null)
{
dragPos = (edge.Node0.RenderPosition(asRoad) + edge.Node1.RenderPosition(asRoad)) * 0.5f;
}
float dist = Vector3.Distance(dragPos, camera.ActualFrom);
dheight *= dist;
delta.Z = dheight;
}
if ((delta != Vector3.Zero) && (Path != null))
{
if (actOnPath)
{
MovePath(Path, delta);
}
else if (node != null)
{
MoveNode(node, delta);
}
else if (edge != null)
{
MoveEdge(edge, delta);
}
skeletonTimer = kSkeletonTime;
}
}
