public void UpdateMesh()
{
List <BalloonPoint> points = balloon.GetPoints();
int pointsCount = points.Count;
if (pointsCount < 2)
{
return;
}
#region Vertices
Vector3[] vertices = new Vector3[(pointsCount) * (sides + 1)];
Color[] colours = new Color[vertices.Length];
BalloonPoint point;
for (int seg = 0; seg < pointsCount; seg++)
{
point = points[seg];
float radius = point.transform.localScale.x;
Vector3 position = points[seg].transform.position;
for (int side = 0; side <= sides; side++)
{
int currSide = side == sides ? 0 : side;
float angle = (float)currSide / sides * 360f;
Vector3 direction = Quaternion.AngleAxis(angle, point.transform.forward) * point.transform.up;
Vector3 vertex = position + direction * radius;
vertices[side + seg * (sides + 1)] = balloon.transform.InverseTransformPoint(vertex);
colours[side + seg * (sides + 1)] = point.Colour;
}
}
#endregion
#region Triangles
int facesNo = vertices.Length;
int trianglesNo = facesNo * 2;
int indexes = trianglesNo * 3;
int[] triangles = new int[indexes];
int i = 0;
for (int seg = 0; seg < pointsCount - 1; seg++)
{
for (int side = 0; side <= sides - 1; side++)
{
int current = side + seg * (sides + 1);
int next = side + (seg + 1) * (sides + 1);
if (i < triangles.Length - 6)
{
triangles[i++] = current;
triangles[i++] = next;
triangles[i++] = next + 1;
triangles[i++] = current;
triangles[i++] = next + 1;
triangles[i++] = current + 1;
}
}
}
#endregion
mesh.vertices = vertices;
mesh.colors = colours;
mesh.triangles = triangles;
mesh.RecalculateNormals();
mesh.RecalculateBounds();
}
