/// <summary>
/// Most tight bounds for the rotational movement of the given point.
/// </summary>
/// <param name="point"></param>
/// <param name="rotation"></param>
/// <returns></returns>
public static idBounds FromPointRotation(Vector3 point, idRotation rotation)
{
if (idMath.Abs(rotation.Angle) < 180.0f)
{
return(BoundsForPointRotation(point, rotation));
}
else
{
float radius = (point - rotation.Origin).Length();
// FIXME: these bounds are usually way larger
idBounds result = new idBounds();
result.Min = new Vector3(-radius, -radius, -radius);
result.Max = new Vector3(radius, radius, radius);
return(result);
}
}
public static idBounds BoundsForPointRotation(Vector3 start, idRotation rotation)
{
Vector3 end = start * rotation;
Vector3 axis = rotation.Vector;
Vector3 origin = rotation.Origin + axis * (axis * (start - rotation.Origin));
float radiusSqr = (start - origin).LengthSquared();
Vector3 v1 = Vector3.Cross(start - origin, axis);
Vector3 v2 = Vector3.Cross(end - origin, axis);
idBounds result = new idBounds();
// if the derivative changes sign along this axis during the rotation from start to end.
if (((v1.X > 0.0f) && (v2.X < 0.0f)) || ((v1.X < 0.0f) && (v2.X > 0.0f)))
{
if ((0.5f * (start.X + end.X) - origin.X) > 0.0f)
{
result.Min.X = idMath.Min(start.X, end.X);
result.Max.X = origin.X + idMath.Sqrt(radiusSqr * (1.0f - axis.X * axis.X));
}
else
{
result.Min.X = origin.X - idMath.Sqrt(radiusSqr * (1.0f - axis.X * axis.X));
result.Max.X = idMath.Max(start.X, end.X);
}
}
else if (start.X > end.X)
{
result.Min.X = end.X;
result.Max.X = start.X;
}
else
{
result.Min.X = start.X;
result.Max.X = end.X;
}
if (((v1.Y > 0.0f) && (v2.Y < 0.0f)) || ((v1.Y < 0.0f) && (v2.Y > 0.0f)))
{
if ((0.5f * (start.Y + end.Y) - origin.Y) > 0.0f)
{
result.Min.Y = idMath.Min(start.Y, end.Y);
result.Max.Y = origin.Y + idMath.Sqrt(radiusSqr * (1.0f - axis.Y * axis.Y));
}
else
{
result.Min.Y = origin.Y - idMath.Sqrt(radiusSqr * (1.0f - axis.Y * axis.Y));
result.Max.Y = idMath.Max(start.Y, end.Y);
}
}
else if (start.Y > end.Y)
{
result.Min.Y = end.Y;
result.Max.Y = start.Y;
}
else
{
result.Min.Y = start.Y;
result.Max.Y = end.Y;
}
if (((v1.Z > 0.0f) && (v2.Z < 0.0f)) || ((v1.Z < 0.0f) && (v2.Z > 0.0f)))
{
if ((0.5f * (start.Z + end.Z) - origin.Z) > 0.0f)
{
result.Min.Z = idMath.Min(start.Z, end.Z);
result.Max.Z = origin.Z + idMath.Sqrt(radiusSqr * (1.0f - axis.Z * axis.Z));
}
else
{
result.Min.Z = origin.Z - idMath.Sqrt(radiusSqr * (1.0f - axis.Z * axis.Z));
result.Max.Z = idMath.Max(start.Z, end.Z);
}
}
else if (start.Z > end.Z)
{
result.Min.Z = end.Z;
result.Max.Z = start.Z;
}
else
{
result.Min.Z = start.Z;
result.Max.Z = end.Z;
}
return(result);
}
/// <summary>
/// Most tight bounds for the rotational movement of the given bounds.
/// </summary>
/// <param name="idBounds"></param>
/// <returns></returns>
public static idBounds FromBoundsRotation(idBounds bounds, Vector3 origin, Matrix axis, idRotation rotation)
{
idBounds result = idBounds.Zero;
Vector3 point = Vector3.Zero;
float radius;
if (idMath.Abs(rotation.Angle) < 180.0f)
{
result = BoundsForPointRotation(Vector3.Transform(bounds.Min, axis) + origin, rotation);
point = Vector3.Zero;
for (int i = 1; i < 8; i++)
{
point.X = (((i ^ (i >> 1)) & 1) == 0) ? bounds.Min.X : bounds.Max.X;
point.Y = (((i >> 1) & 1) == 0) ? bounds.Min.Y : bounds.Max.Y;
point.Z = (((i >> 2) & 1) == 0) ? bounds.Min.Z : bounds.Max.Z;
result += BoundsForPointRotation(Vector3.Transform(point, axis) + origin, rotation);
}
}
else
{
point = (bounds.Max - bounds.Min) * 0.5f;
radius = (bounds.Max - point).Length() + (point - rotation.Origin).Length();
result = new idBounds();
result.Min = new Vector3(-radius, -radius, -radius);
result.Max = new Vector3(radius, radius, radius);
}
return(result);
}
public static idBounds BoundsForPointRotation(Vector3 start, idRotation rotation)
{
Vector3 end = start * rotation;
Vector3 axis = rotation.Vector;
Vector3 origin = rotation.Origin + axis * (axis * (start - rotation.Origin));
float radiusSqr = (start - origin).LengthSquared();
Vector3 v1 = Vector3.Cross(start - origin, axis);
Vector3 v2 = Vector3.Cross(end - origin, axis);
idBounds result = new idBounds();
// if the derivative changes sign along this axis during the rotation from start to end.
if(((v1.X > 0.0f) && (v2.X < 0.0f)) || ((v1.X < 0.0f) && (v2.X > 0.0f)))
{
if((0.5f * (start.X + end.X) - origin.X) > 0.0f)
{
result.Min.X = idMath.Min(start.X, end.X);
result.Max.X = origin.X + idMath.Sqrt(radiusSqr * (1.0f - axis.X * axis.X));
}
else
{
result.Min.X = origin.X - idMath.Sqrt(radiusSqr * (1.0f - axis.X * axis.X));
result.Max.X = idMath.Max(start.X, end.X);
}
}
else if(start.X > end.X)
{
result.Min.X = end.X;
result.Max.X = start.X;
}
else
{
result.Min.X = start.X;
result.Max.X = end.X;
}
if(((v1.Y > 0.0f) && (v2.Y < 0.0f)) || ((v1.Y < 0.0f) && (v2.Y > 0.0f)))
{
if((0.5f * (start.Y + end.Y) - origin.Y) > 0.0f)
{
result.Min.Y = idMath.Min(start.Y, end.Y);
result.Max.Y = origin.Y + idMath.Sqrt(radiusSqr * (1.0f - axis.Y * axis.Y));
}
else
{
result.Min.Y = origin.Y - idMath.Sqrt(radiusSqr * (1.0f - axis.Y * axis.Y));
result.Max.Y = idMath.Max(start.Y, end.Y);
}
}
else if(start.Y > end.Y)
{
result.Min.Y = end.Y;
result.Max.Y = start.Y;
}
else
{
result.Min.Y = start.Y;
result.Max.Y = end.Y;
}
if(((v1.Z > 0.0f) && (v2.Z < 0.0f)) || ((v1.Z < 0.0f) && (v2.Z > 0.0f)))
{
if((0.5f * (start.Z + end.Z) - origin.Z) > 0.0f)
{
result.Min.Z = idMath.Min(start.Z, end.Z);
result.Max.Z = origin.Z + idMath.Sqrt(radiusSqr * (1.0f - axis.Z * axis.Z));
}
else
{
result.Min.Z = origin.Z - idMath.Sqrt(radiusSqr * (1.0f - axis.Z * axis.Z));
result.Max.Z = idMath.Max(start.Z, end.Z);
}
}
else if(start.Z > end.Z)
{
result.Min.Z = end.Z;
result.Max.Z = start.Z;
}
else
{
result.Min.Z = start.Z;
result.Max.Z = end.Z;
}
return result;
}
/// <summary>
/// Most tight bounds for the rotational movement of the given bounds.
/// </summary>
/// <param name="idBounds"></param>
/// <returns></returns>
public static idBounds FromBoundsRotation(idBounds bounds, Vector3 origin, Matrix axis, idRotation rotation)
{
idBounds result = idBounds.Zero;
Vector3 point = Vector3.Zero;
float radius;
if(idMath.Abs(rotation.Angle) < 180.0f)
{
result = BoundsForPointRotation(Vector3.Transform(bounds.Min, axis) + origin, rotation);
point = Vector3.Zero;
for(int i = 1; i < 8; i++)
{
point.X = (((i ^ (i >> 1)) & 1) == 0) ? bounds.Min.X : bounds.Max.X;
point.Y = (((i >> 1) & 1) == 0) ? bounds.Min.Y : bounds.Max.Y;
point.Z = (((i >> 2) & 1) == 0) ? bounds.Min.Z : bounds.Max.Z;
result += BoundsForPointRotation(Vector3.Transform(point, axis) + origin, rotation);
}
}
else
{
point = (bounds.Max - bounds.Min) * 0.5f;
radius = (bounds.Max - point).Length() + (point - rotation.Origin).Length();
result = new idBounds();
result.Min = new Vector3(-radius, -radius, -radius);
result.Max = new Vector3(radius, radius, radius);
}
return result;
}
/// <summary>
/// Most tight bounds for the rotational movement of the given point.
/// </summary>
/// <param name="point"></param>
/// <param name="rotation"></param>
/// <returns></returns>
public static idBounds FromPointRotation(Vector3 point, idRotation rotation)
{
if(idMath.Abs(rotation.Angle) < 180.0f)
{
return BoundsForPointRotation(point, rotation);
}
else
{
float radius = (point - rotation.Origin).Length();
// FIXME: these bounds are usually way larger
idBounds result = new idBounds();
result.Min = new Vector3(-radius, -radius, -radius);
result.Max = new Vector3(radius, radius, radius);
return result;
}
}
public TraceResult RotationModel(Vector3 start, idRotation rotation, idClipModel model, Matrix traceModelAxis, ContentFlags contentMask, int modelHandle, Vector3 modelOrigin, Matrix modelAxis)
{
idConsole.Warning("TODO: idClip.RotationModel");
// TODO: idTraceModel traceModel = TraceModelForClipModel(model);
_rotationCount++;
// TODO: return idR.CollisionModelManager.Rotation(start, rotation, traceModel, traceModelAxis, contentMask, modelHandle, modelOrigin, modelAxis);
return new TraceResult();
}
public bool Rotation(out TraceResult result, Vector3 start, idRotation rotation, idClipModel model, Matrix traceModelAxis, ContentFlags contentMask, idEntity passEntity)
{
idConsole.Warning("TODO: idClip.Rotation");
/*idTraceModel traceModel = TraceModelForClipModel(model);
idBounds traceBounds = new idBounds();
TraceResult traceResult;
if((passEntity == null) || (passEntity.Index != idR.EntityIndexWorld))
{
// test world
_rotationCount++;
// TODO: NEED ENGINE SOURCE idR.CollisionModelManager.Rotation(out result, start, rotation, traceModel, traceModelAxis, contentMask, 0, Vector3.Zero, Matrix.Identity);
result.ContactInformation.EntityIndex = (result.Fraction != 1.0f) ? idR.EntityIndexWorld : idR.EntityIndexNone;
if(result.Fraction == 0.0f)
{
return true; // blocked immediately by the world
}
}
else
{
result = new TraceResult();
result.Fraction = 1.0f;
result.EndPosition = start;
result.EndAxis = traceModelAxis * rotation.ToMatrix();
}
if(traceModel == null)
{
traceBounds = idBounds.FromPointRotation(start, rotation);
}
else
{
traceBounds = idBounds.FromBoundsRotation(traceModel.Bounds, start, traceModelAxis, rotation);
}
idClipModel[] clipModelList = GetTraceClipModels(traceBounds, contentMask, passEntity);
foreach(idClipModel touch in clipModelList)
{
if(touch == null)
{
continue;
}
if(touch.RenderModelHandle != -1)
{
continue;
}
_rotationCount++;
// TODO: traceResult = idR.CollisionModelManager.Rotation(start, rotation, traceModel, traceModelAxis, contentMask, touch.Handle, touch.Origin, touch.Axis);
if(traceResult.Fraction < result.Fraction)
{
result = traceResult;
result.ContactInformation.EntityIndex = touch.Entity.Index;
result.ContactInformation.ID = touch.ID;
if(result.Fraction == 0.0f)
{
break;
}
}
}
return (result.Fraction < 1.0f);*/
result = new TraceResult();
return false;
}
