public static List <Triangle> Create(Vector3 start, float startRadius, Vector3 end, float endRadius, int steps = 24, int precision = 12)
{
var dir = Vector3.Normalize(end - start);
var startPoints = Disk.CreatePoints(start, dir, startRadius, steps);
var endPoints = Disk.CreatePoints(end, dir, endRadius, steps);
var triangles = GeometryHelper.ExtrudePoints(startPoints, endPoints);
triangles.AddRange(CreateCap(start, startRadius, Vector3.Normalize(start - end), steps, precision));
triangles.AddRange(CreateCap(end, endRadius, Vector3.Normalize(end - start), steps, precision));
return(triangles);
}
private static List <Triangle> CreateCap(Vector3 start, float radius, Vector3 normal, int steps, int precision)
{
var triangles = new List <Triangle>();
var end = start + normal * radius;
for (int i = 0; i < precision; ++i)
{
float t1 = ((i + 0) / (float)precision);
float t2 = ((i + 1) / (float)precision);
float radius1 = MathHelper.Lerp(0, radius, (float)Math.Sqrt(1f - (t1 * t1)));
float radius2 = MathHelper.Lerp(0, radius, (float)Math.Sqrt(1f - (t2 * t2)));
var pos1 = Vector3.Lerp(start, end, t1);
var pos2 = Vector3.Lerp(start, end, t2);
var startPoints = Disk.CreatePoints(pos1, normal, radius1, steps);
var endPoints = Disk.CreatePoints(pos2, normal, radius2, steps);
triangles.AddRange(GeometryHelper.ExtrudePoints(startPoints, endPoints));
}
return(triangles);
}