/// <summary>
/// Gets the triangle vertex that is at the most extreme along the specified direction.
/// </summary>
/// <param name="d">A normalized direction vector.</param>
/// <returns>Returns the most extreme vertex.</returns>
public TriangleFeature ExtremeVertex(ref Vector3 d)
{
var feature = new TriangleFeature {
Type = TriangleFeatureType.Vertex
};
float d1, d2, d3;
Vector3.Dot(ref d, ref V1, out d1);
Vector3.Dot(ref d, ref V2, out d2);
Vector3.Dot(ref d, ref V3, out d3);
if (d1 >= d2 && d1 >= d3)
{
feature.Index = 1; feature.X = d1;
}
else if (d2 >= d1 && d2 >= d3)
{
feature.Index = 2; feature.X = d2;
}
else
{
feature.Index = 3; feature.X = d3;
}
return(feature);
}
/// <summary>
/// Gets the triangle vertex that is at the most extreme along the specified direction.
/// </summary>
/// <param name="d">A normalized direction vector.</param>
/// <returns>Returns the most extreme vertex.</returns>
public TriangleFeature ExtremeVertex(ref Vector3 d)
{
var feature = new TriangleFeature { Type = TriangleFeatureType.Vertex };
float d1, d2, d3;
Vector3.Dot(ref d, ref V1, out d1);
Vector3.Dot(ref d, ref V2, out d2);
Vector3.Dot(ref d, ref V3, out d3);
if (d1 >= d2 && d1 >= d3)
{ feature.Index = 1; feature.X = d1; }
else if (d2 >= d1 && d2 >= d3)
{ feature.Index = 2; feature.X = d2; }
else
{ feature.Index = 3; feature.X = d3; }
return feature;
}