public override byte NextBlock(DrawOp op)
{
// Figure out local coords for this block
int x = (op.Coords.X - op.Min.X) % state.Width;
if (x < 0)
{
x += state.Width;
}
int y = (op.Coords.Y - op.Min.Y) % state.Height;
if (y < 0)
{
y += state.Height;
}
int z = (op.Coords.Z - op.Min.Z) % state.Length;
if (z < 0)
{
z += state.Length;
}
index = state.GetIndex(x, y, z);
return(state.Blocks[index]);
}
void FlipZ(CopyState state)
{
int midX = state.Width / 2, maxX = state.Width - 1;
byte[] blocks = state.Blocks, extBlocks = state.ExtBlocks;
state.OriginX = state.OppositeOriginX;
for (int y = 0; y < state.Height; y++)
{
for (int z = 0; z < state.Length; z++)
{
for (int x = 0; x < midX; x++)
{
int endX = maxX - x;
int start = state.GetIndex(x, y, z);
int end = state.GetIndex(endX, y, z);
Swap(blocks, extBlocks, start, end);
}
}
}
}
void FlipY(CopyState state)
{
int midY = state.Height / 2, maxY = state.Height - 1;
byte[] blocks = state.Blocks, extBlocks = state.ExtBlocks;
state.OriginY = state.OppositeOriginY;
for (int y = 0; y < midY; y++)
{
int endY = maxY - y;
int start = state.GetIndex(0, y, 0);
int end = state.GetIndex(0, endY, 0);
for (int z = 0; z < state.Length; z++)
{
for (int x = 0; x < state.Width; x++)
{
Swap(blocks, extBlocks, start, end);
start++; end++;
}
}
}
}
void FlipX(CopyState state)
{
int midZ = state.Length / 2, maxZ = state.Length - 1;
byte[] blocks = state.Blocks, extBlocks = state.ExtBlocks;
state.OriginZ = state.OppositeOriginZ;
for (int y = 0; y < state.Height; y++)
{
for (int z = 0; z < midZ; z++)
{
int endZ = maxZ - z;
int start = state.GetIndex(0, y, z);
int end = state.GetIndex(0, y, endZ);
for (int x = 0; x < state.Width; x++)
{
Swap(blocks, extBlocks, start, end);
start++; end++;
}
}
}
}
public override byte NextBlock(DrawOp op)
{
Vec3U16 p = LocalCoords(op);
return(state.Blocks[state.GetIndex(p.X, p.Y, p.Z)]);
}
