public bool FindSideByPoint(Point point, Scene scene, Matrix parentWorld,
out CubeCoords coords, out CubeSide side)
{
var worldView = view.World * World * parentWorld * scene.View;
return view.FindSideByPoint(point, scene, worldView, scene.Projection,
out coords, out side);
}
public Rotation CreateRotationFromSides(
CubeCoords coords1, CubeSide side1,
CubeCoords coords2, CubeSide side2)
{
int left1 = coords1.Left;
int top1 = coords1.Top;
int depth1 = coords1.Depth;
int left2 = coords2.Left;
int top2 = coords2.Top;
int depth2 = coords2.Depth;
if (side1 == side2 && coords1 != coords2)
{
bool invert;
Axis? equalsWay = GetEqualsWay(side1,
left1, top1, depth1,
left2, top2, depth2,
out invert);
if (equalsWay == null)
return null;
Axis rotation = (Axis)equalsWay;
int layer = CoordsHelper.GetLayerFromAxis(rotation, coords1);
return new Rotation(rotation, layer, !invert);
}
else if (coords1 == coords2 && side1 != side2)
{
int sum = (int)Axis.Left + (int)Axis.Top + (int)Axis.Depth;
Axis axis1 = CoordsHelper.GetAxisFromSide(side1);
Axis axis2 = CoordsHelper.GetAxisFromSide(side2);
Axis rotation = (Axis)(sum - (int)axis1 - (int)axis2);
int layer = CoordsHelper.GetLayerFromAxis(rotation, coords1);
bool clockwise = false;
for (int i = 0; i < rotationRules.GetLength(0); i++)
{
if (rotationRules[i, 0] == side1 &&
rotationRules[i, 1] == side2)
{
clockwise = true;
break;
}
}
return new Rotation(rotation, layer, clockwise);
}
return null;
}
public static Vector3 GetPositionFromCoords(CubeCoords coords, int cubeSize)
{
if (cubeSize <= 0)
{
throw new ArgumentOutOfRangeException("cubeSize");
}
float shift = ((float)cubeSize - 1) / 2;
return(new Vector3(
coords.Left - shift,
-coords.Top + shift,
-coords.Depth + shift) * 2f / cubeSize);
}
public static int GetLayerFromAxis(Axis axis, CubeCoords coords)
{
switch (axis)
{
case Axis.Left:
return(coords.Left);
case Axis.Top:
return(coords.Top);
case Axis.Depth:
return(coords.Depth);
default:
throw new ArgumentException("Invalid axis value.", "axis");
}
}
public void ReplaceCube(DataCube<SmallCube> newCube)
{
if (newCube == null)
throw new ArgumentNullException("newCube");
if (newCube.Size != Size)
throw new ArgumentException("newCube.Size must equals Size.", "newCube");
var replacer = new DataCube<SmallCube>(newCube.Size);
int maxIndex = newCube.Size - 1;
foreach (var coords in CubeCoords.EnumerateCube(Size))
{
bool isOuterCube =
coords.Left == 0 || coords.Left == maxIndex ||
coords.Top == 0 || coords.Top == maxIndex ||
coords.Depth == 0 || coords.Depth == maxIndex;
if (isOuterCube)
{
if (newCube[coords] == null)
{
throw new ArgumentException(
"Outer cube element at (" + coords.ToString() + ") is null.", "newCube");
}
replacer[coords] = (SmallCube)newCube[coords].Clone();
}
}
if (view.AnimationInProgress)
view.EndAnimation();
var viewReplacer = new CubeView<DefaultCubePart>(
replacer, colorMap, true);
viewReplacer.World = view.World;
viewReplacer.Up = view.Up;
viewReplacer.Look = view.Look;
viewReplacer.Right = viewReplacer.Right;
dataCube = replacer;
view = viewReplacer;
}
public T this[CubeCoords coords]
{
get { return(this[coords.Left, coords.Top, coords.Depth]); }
set { this[coords.Left, coords.Top, coords.Depth] = value; }
}
public SearchCandidate(CubeCoords coords, CubeSide side, Matrix wvp)
{
Coords = coords;
Side = side;
Wvp = wvp;
}
public bool FindSideByPoint(Point point, Scene scene, Matrix worldView, Matrix projection,
out CubeCoords coords, out CubeSide side)
{
coords = new CubeCoords();
side = CubeSide.Left;
Matrix wvp = worldView * projection;
Vector3 p = new Vector3(
(float)point.X * 2f / scene.Viewport.Width - 1f,
-(float)point.Y * 2f / scene.Viewport.Height + 1f,
0);
bool[] visibility = new bool[]
{
Vector3.TransformNormal(Vector3.Left, ref worldView).Z > 0,
Vector3.TransformNormal(Vector3.Right, ref worldView).Z > 0,
Vector3.TransformNormal(Vector3.Up, ref worldView).Z > 0,
Vector3.TransformNormal(Vector3.Down, ref worldView).Z > 0,
Vector3.TransformNormal(Vector3.Backward, ref worldView).Z > 0,
Vector3.TransformNormal(Vector3.Forward, ref worldView).Z > 0,
};
var candidates = new List <SearchCandidate>();
CubeCoords[] indices = new CubeCoords[6];
int maxIndex = viewCube.Size - 1;
for (int i = 0; i < viewCube.Size; i++)
{
for (int j = 0; j < viewCube.Size; j++)
{
indices[(int)CubeSide.Left] = new CubeCoords(0, i, j);
indices[(int)CubeSide.Right] = new CubeCoords(maxIndex, i, j);
indices[(int)CubeSide.Up] = new CubeCoords(i, 0, j);
indices[(int)CubeSide.Down] = new CubeCoords(i, maxIndex, j);
indices[(int)CubeSide.Front] = new CubeCoords(i, j, 0);
indices[(int)CubeSide.Back] = new CubeCoords(i, j, maxIndex);
for (int k = 0; k < indices.Length; k++)
{
coords = indices[k];
side = (CubeSide)k;
Matrix localWvp = viewCube[coords].World * wvp;
if (visibility[(int)side] &&
IsSideContainsPoint(viewCube[coords], side, p, scene, localWvp))
{
candidates.Add(new SearchCandidate(coords, side, localWvp));
}
}
}
}
var cubes = candidates.OrderBy(c => Vector3.Transform(Vector3.Zero, ref c.Wvp).Z);
if (cubes.Any())
{
coords = cubes.First().Coords;
side = cubes.First().Side;
return(true);
}
return(false);
}
public bool Equals(CubeCoords other)
{
return(Left == other.Left && Top == other.Top && Depth == other.Depth);
}