private static bool IsSphereInFrustum(Vector3d sphereCenter, double sphereRadius, PlaneD[] frustum)
{
Vector4d center4 = new Vector4d(sphereCenter.X, sphereCenter.Y, sphereCenter.Z, 1.0);
for (int i = 0; i < 6; i++)
{
if (frustum[i].Dot(center4) < -sphereRadius)
{
return false;
}
}
return true;
}
public bool IsSphereInViewFrustum(SharpDX.Vector3 center, float radius)
{
Vector4d centerV4 = new Vector4d(center.X, center.Y, center.Z, 1f);
for (int i = 0; i < 6; i++)
{
if (frustum[i].Dot(centerV4) + radius < 0)
{
return false;
}
}
return true;
}
public static bool IsPlanetInFrustum(RenderContext11 renderContext, float rad)
{
rad *= 2;
var frustum = renderContext.Frustum;
var center = new Vector3d(0, 0, 0);
var centerV4 = new Vector4d(0, 0, 0, 1f);
for (var i = 0; i < 6; i++)
{
if (frustum[i].Dot(centerV4) + rad < 0)
{
return false;
}
}
return true;
}
public virtual bool IsTileInFrustum(PlaneD[]frustum)
{
InViewFrustum = false;
Vector3d center = sphereCenter;
if (this.Level < 2 && (dataset.Projection == ProjectionType.Mercator || dataset.Projection == ProjectionType.Toast))
{
return true;
}
Vector4d centerV4 = new Vector4d(center.X , center.Y , center.Z , 1f);
Vector3d length = new Vector3d(sphereRadius, 0, 0);
double rad = length.Length();
for (int i = 0; i < 6; i++)
{
if (frustum[i].Dot(centerV4) + rad < 0)
{
return false;
}
}
InViewFrustum = true;
return true;
}
// public static Plane Normalize(Plane p);
// public static Vector3 IntersectLine(Plane p, Vector3 v1, Vector3 v2);
// public static Plane FromPointNormal(Vector3 point, Vector3 normal);
// public static Plane FromPoints(Vector3 p1, Vector3 p2, Vector3 p3);
// public void Transform(Matrix m);
// public static Plane Transform(Plane p, Matrix m);
// public void Scale(float s);
// public static Plane Scale(Plane p, float s);
// public float Dot(Vector3 v);
public double Dot(Vector4d v)
{
//return ((((planeRef[4] * *(((float*) (&v + 4)))) + (planeRef[8] * *(((float*) (&v + 8))))) + (planeRef[12] * *(((float*) (&v + 12))))) + (planeRef[0] * *(((float*) &v))));
return B * v.Y + C * v.Z + D * v.W + A * v.X;
}
