/// <summary>
/// Tests for intersection between a <see cref="Sphere"/> and an <see cref="OrientedBox"/> .
/// </summary>
/// <param name="sphere">A <see cref="Sphere"/> instance.</param>
/// <param name="box">An <see cref="OrientedBox"/> instance.</param>
/// <returns>An <see cref="IntersectionType"/> value.</returns>
public static IntersectionType Intersects(Sphere sphere, OrientedBox box)
{
// TODO: Implement this.
throw new NotImplementedException();
}
/// <summary>
/// Tests for intersection between a <see cref="Ray"/> and an <see cref="OrientedBox">oriented box</see>.
/// </summary>
/// <param name="ray">A <see cref="Ray"/> instance.</param>
/// <param name="obb">A <see cref="OrientedBox"/> instance.</param>
/// <returns>An <see cref="IntersectionPair"/> instance containing the intersection information.</returns>
public static IntersectionPair Intersects(Ray ray, OrientedBox obb)
{
// TODO: Implement this.
throw new NotImplementedException();
}
/// <summary>
/// Tests for intersection between an <see cref="AxisAlignedBox"/> and an <see cref="OrientedBox"/> .
/// </summary>
/// <param name="box1">An <see cref="AxisAlignedBox"/> instance.</param>
/// <param name="box2">An <see cref="OrientedBox"/> instance.</param>
/// <returns>An <see cref="IntersectionType"/> value.</returns>
public static IntersectionType Intersects(AxisAlignedBox box1, OrientedBox box2)
{
// TODO: Implement this.
throw new NotImplementedException();
}
/// <summary>
/// Calculates the distance between a point and a solid oriented box.
/// </summary>
/// <param name="point">A <see cref="Vector3F"/> instance.</param>
/// <param name="obb">An <see cref="OrientedBox"/> instance.</param>
/// <returns>The distance between a point and a solid oriented box.</returns>
/// <remarks>
/// Treating the oriented box as solid means that any point inside the box has
/// distance zero from the box.
/// </remarks>
public static float Distance(Vector3F point, OrientedBox obb)
{
return (float)System.Math.Sqrt(SquaredDistance(point, obb));
}
/// <summary>
/// Initializes a new instance of the <see cref="OrientedBox"/> class using given values from another box instance.
/// </summary>
/// <param name="box">A <see cref="OrientedBox"/> instance to take values from.</param>
public OrientedBox(OrientedBox box)
{
_center = box.Center;
_axis1 = box.Axis1;
_axis2 = box.Axis2;
_axis3 = box.Axis3;
_extent1 = box.Extent1;
_extent2 = box.Extent2;
_extent3 = box.Extent3;
}
/// <summary>
/// Calculates the squared distance between a point and a solid oriented box.
/// </summary>
/// <param name="point">A <see cref="Vector3F"/> instance.</param>
/// <param name="obb">An <see cref="OrientedBox"/> instance.</param>
/// <returns>The squared distance between a point and a solid oriented box.</returns>
/// <remarks>
/// Treating the oriented box as solid means that any point inside the box has
/// distance zero from the box.
/// </remarks>
public static float SquaredDistance(Vector3F point, OrientedBox obb)
{
Vector3F temp;
return SquaredDistancePointSolidOrientedBox(point, obb, out temp);
}
/// <summary>
/// Calculates the squared distance between a point and a solid oriented box.
/// </summary>
/// <param name="point">A <see cref="Vector3F"/> instance.</param>
/// <param name="obb">An <see cref="OrientedBox"/> instance.</param>
/// <param name="closestPoint">The closest point in box coordinates.</param>
/// <returns>The squared distance between a point and a solid oriented box.</returns>
/// <remarks>
/// Treating the oriented box as solid means that any point inside the box has
/// distance zero from the box.
/// </remarks>
public static float SquaredDistancePointSolidOrientedBox(Vector3F point, OrientedBox obb, out Vector3F closestPoint)
{
Vector3F diff = point - obb.Center;
Vector3F closest = new Vector3F(
Vector3F.Dot(diff, obb.Axis1),
Vector3F.Dot(diff, obb.Axis2),
Vector3F.Dot(diff, obb.Axis3));
float sqrDist = 0.0f;
float delta = 0.0f;
if (closest.X < -obb.Extent1)
{
delta = closest.X + obb.Extent1;
sqrDist += delta*delta;
closest.X = -obb.Extent1;
}
else if (closest.X > obb.Extent1)
{
delta = closest.X - obb.Extent1;
sqrDist += delta*delta;
closest.X = obb.Extent1;
}
if (closest.Y < -obb.Extent2)
{
delta = closest.Y + obb.Extent2;
sqrDist += delta*delta;
closest.Y = -obb.Extent2;
}
else if (closest.Y > obb.Extent2)
{
delta = closest.Y - obb.Extent2;
sqrDist += delta*delta;
closest.Y = obb.Extent2;
}
if (closest.Z < -obb.Extent3)
{
delta = closest.Z + obb.Extent3;
sqrDist += delta*delta;
closest.Z = -obb.Extent3;
}
else if (closest.Z > obb.Extent3)
{
delta = closest.Z - obb.Extent3;
sqrDist += delta*delta;
closest.Z = obb.Extent3;
}
closestPoint = closest;
return sqrDist;
}
/// <summary>
/// Tests for intersection between a <see cref="Sphere"/> and an <see cref="OrientedBox"/> .
/// </summary>
/// <param name="sphere">A <see cref="Sphere"/> instance.</param>
/// <param name="box">An <see cref="OrientedBox"/> instance.</param>
/// <returns>An <see cref="IntersectionType"/> value.</returns>
public static IntersectionType Intersects(Sphere sphere, OrientedBox box)
{
// TODO: Implement this.
throw new NotImplementedException();
}
/// <summary>
/// Tests for intersection between an <see cref="AxisAlignedBox"/> and an <see cref="OrientedBox"/> .
/// </summary>
/// <param name="box1">An <see cref="AxisAlignedBox"/> instance.</param>
/// <param name="box2">An <see cref="OrientedBox"/> instance.</param>
/// <returns>An <see cref="IntersectionType"/> value.</returns>
public static IntersectionType Intersects(AxisAlignedBox box1, OrientedBox box2)
{
// TODO: Implement this.
throw new NotImplementedException();
}
/// <summary>
/// Tests for intersection between a <see cref="Ray"/> and an <see cref="OrientedBox">oriented box</see>.
/// </summary>
/// <param name="ray">A <see cref="Ray"/> instance.</param>
/// <param name="obb">A <see cref="OrientedBox"/> instance.</param>
/// <returns>An <see cref="IntersectionPair"/> instance containing the intersection information.</returns>
public static IntersectionPair Intersects(Ray ray, OrientedBox obb)
{
// TODO: Implement this.
throw new NotImplementedException();
}
/// <summary>
/// Calculates the distance between a point and a solid oriented box.
/// </summary>
/// <param name="point">A <see cref="Vector3F"/> instance.</param>
/// <param name="obb">An <see cref="OrientedBox"/> instance.</param>
/// <returns>The distance between a point and a solid oriented box.</returns>
/// <remarks>
/// Treating the oriented box as solid means that any point inside the box has
/// distance zero from the box.
/// </remarks>
public static float Distance(Vector3F point, OrientedBox obb)
{
return((float)System.Math.Sqrt(SquaredDistance(point, obb)));
}
/// <summary>
/// Calculates the squared distance between a point and a solid oriented box.
/// </summary>
/// <param name="point">A <see cref="Vector3F"/> instance.</param>
/// <param name="obb">An <see cref="OrientedBox"/> instance.</param>
/// <returns>The squared distance between a point and a solid oriented box.</returns>
/// <remarks>
/// Treating the oriented box as solid means that any point inside the box has
/// distance zero from the box.
/// </remarks>
public static float SquaredDistance(Vector3F point, OrientedBox obb)
{
Vector3F temp;
return(SquaredDistancePointSolidOrientedBox(point, obb, out temp));
}