// Use this for initialization
void Start()
{
CurrentPloygon = new Ploygon()
{
IsFinished = false,
Root = new GameObject(),
Points = new List <Vector3>()
};
}
/// <summary>
/// Calculate an area of geometry
/// </summary>
/// <param name="ploygon"></param>
/// <returns></returns>
float CalculatePloygonArea(Ploygon ploygon)
{
var s = 0.0f;
var i = 1;
var n = ploygon.Points.Count;
for (; i < n - 1; i++)
{
s += CalculateTriangleArea(ploygon.Points[0], ploygon.Points[i], ploygon.Points[i + 1]);
}
return(0.5f * Mathf.Abs(s));
}
/// <summary>
/// reset current unfinished geometry
/// </summary>
public void Reset()
{
if (CurrentPloygon != null && !CurrentPloygon.IsFinished)
{
Destroy(CurrentPloygon.Root);
CurrentPloygon = new Ploygon()
{
IsFinished = false,
Root = new GameObject(),
Points = new List <Vector3>()
};
}
}
float CalculatePloygonArea(Ploygon ploygon)
{
var s = 0.0f;
var i = 1;
var n = ploygon.Points.Count;
for (; i < n - 1; i++)
{
s += CalculateTriangleArea(ploygon.Points[0], ploygon.Points[i], ploygon.Points[i + 1]);
}
//This should trigger mesh coloring
//VertsColor(ploygon.Root);
return(0.5f * Mathf.Abs(s));
}
/// <summary>
/// handle new point users place
/// </summary>
/// <param name="LinePrefab"></param>
/// <param name="PointPrefab"></param>
/// <param name="TextPrefab"></param>
public void AddPoint(GameObject LinePrefab, GameObject PointPrefab, GameObject TextPrefab)
{
var hitPoint = GazeManager.Instance.HitInfo.point;
var point = (GameObject)Instantiate(PointPrefab, hitPoint, Quaternion.identity);
var newPoint = new Point
{
Position = hitPoint,
Root = point
};
if (CurrentPloygon.IsFinished)
{
CurrentPloygon = new Ploygon()
{
IsFinished = false,
Root = new GameObject(),
Points = new List <Vector3>()
};
CurrentPloygon.Points.Add(newPoint.Position);
newPoint.Root.transform.parent = CurrentPloygon.Root.transform;
}
else
{
CurrentPloygon.Points.Add(newPoint.Position);
newPoint.Root.transform.parent = CurrentPloygon.Root.transform;
if (CurrentPloygon.Points.Count > 1)
{
var index = CurrentPloygon.Points.Count - 1;
var centerPos = (CurrentPloygon.Points[index] + CurrentPloygon.Points[index - 1]) * 0.5f;
var direction = CurrentPloygon.Points[index] - CurrentPloygon.Points[index - 1];
var distance = Vector3.Distance(CurrentPloygon.Points[index], CurrentPloygon.Points[index - 1]);
var line = (GameObject)Instantiate(LinePrefab, centerPos, Quaternion.LookRotation(direction));
line.transform.localScale = new Vector3(distance, 0.005f, 0.005f);
line.transform.Rotate(Vector3.down, 90f);
line.transform.parent = CurrentPloygon.Root.transform;
}
}
}