//# } // isIndexed
#region Geometric Properties
/// <summary>
/// The vertex centroid is the average of the vertex coordinates.
/// </summary>
public static __tvec__ ComputeVertexCentroid(this __tipolygon__ polygon)
{
var sum = __tvec__.Zero;
int pc = polygon.PointCount;
for (int i = 0; i < pc; i++)
{
sum += polygon[i];
}
var scale = 1.0 / (double)pc;
return(sum * scale);
}
public static double ComputePerimeter(this __tipolygon__ polygon)
{
var pc = polygon.PointCount;
var p0 = polygon[pc - 1];
var r = 0.0;
for (int i = 0; i < pc; i++)
{
var p1 = polygon[i];
r += __tvec__.Distance(p0, p1);
p0 = p1;
}
return(r);
}
//# if (isIndexed) {
#region Conversions
public static __tpolygon__ To__tpolygon__(this __tipolygon__ polygon)
{
return(new __tpolygon__(polygon.GetPointArray()));
}
