public static bool RayCastVoxels(ref Vector3D start, ref Vector3D end, out MyVoxelBase hitVoxel, out Vector3D hitPosition, bool checkPlanet = DefaultCheckPlanet)
{
#if PROFILE
Profiler.StartProfileBlock();
try
{
#endif
CapsuleD capsule;
capsule.P0 = start;
capsule.P1 = end;
capsule.Radius = 0f;
return(CapsuleDExtensions.IntersectsVoxel(ref capsule, out hitVoxel, out hitPosition, checkPlanet));
#if PROFILE
}
finally { Profiler.EndProfileBlock(); }
#endif
}
/// <summary>
/// Ray cast all the voxels in the world to check for intersection.
/// </summary>
/// <param name="line">The line to check</param>
///// <param name="shortTest">Shortens the line by 5 m, needed to interact with an entity that may be on the surface of the voxel.</param>
/// <returns>True iff any voxel intersects the line</returns>
public static bool RayCastVoxels(LineD line, out MyVoxelBase hitVoxel, out Vector3D hitPosition, bool checkPlanet = DefaultCheckPlanet)
{
//const double ShortenBy = 5d;
#if PROFILE
Profiler.StartProfileBlock();
try
{
#endif
CapsuleD capsule;
capsule.P0 = line.From;
capsule.P1 = line.To;
capsule.Radius = 0f;
return(CapsuleDExtensions.IntersectsVoxel(ref capsule, out hitVoxel, out hitPosition, checkPlanet));
#if PROFILE
}
finally { Profiler.EndProfileBlock(); }
#endif
}
/// <summary>
/// Find a sphere free from voxel.
/// </summary>
/// <param name="voxel">The voxel to avoid.</param>
/// <param name="startPosition">The position to start the search.</param>
/// <param name="minRadius">The minimum radius around freePosition.</param>
/// <param name="freePosition">A position that is minRadius from voxel</param>
public static void FindFreeSpace(this MyVoxelBase voxel, Vector3D startPosition, double minRadius, out Vector3D freePosition)
{
MyPlanet planet = voxel as MyPlanet;
if (planet != null)
{
Vector3D centre = planet.GetCentre();
Vector3D direction; Vector3D.Subtract(ref startPosition, ref centre, out direction);
direction.Normalize();
FindFreeSpace(voxel, startPosition, direction, minRadius, out freePosition);
return;
}
BoundingSphereD testSphere;
testSphere.Radius = minRadius;
for (double testDist = minRadius; ; testDist += minRadius)
{
foreach (Vector3I neighbour in Globals.Neighbours)
{
Vector3D disp = Vector3D.Multiply(neighbour, testDist);
Vector3D.Add(ref startPosition, ref disp, out testSphere.Center);
if (!ContainsOrIntersects(voxel, ref testSphere, true))
{
CapsuleD capsule;
capsule.P0 = testSphere.Center;
Vector3D disp1 = Vector3D.Multiply(neighbour, testDist * 0.5d);
Vector3D.Add(ref startPosition, ref disp1, out capsule.P1);
capsule.Radius = (float)minRadius;
if (!CapsuleDExtensions.Intersects(ref capsule, voxel, out freePosition))
{
freePosition = capsule.P1;
}
return;
}
}
}
}
