public static void PaintBucket(this MatrixWorld matrix, Coord coord, float val, float threshold = 0.0001f, int maxIterations = 10)
/// Like a paintBucket tool in photoshop
/// Fills all zero (lower than threshold) values with val, until meets borders
/// Doesnt guarantee filling (areas after the corner could be missed)
/// Use threshold to change between mask -1 or 0
/// TODO: to matrix ops
{
CoordRect rect = matrix.rect;
Coord min = rect.Min; Coord max = rect.Max;
MatrixOps.Stripe stripe = new MatrixOps.Stripe(Mathf.Max(rect.size.x, rect.size.z));
stripe.length = rect.size.x;
matrix[coord] = -256; //starting mask
//first vertical spread is one row-only
MatrixOps.ReadRow(stripe, matrix, coord.x, matrix.rect.offset.z);
PaintBucketMaskStripe(stripe, threshold);
MatrixOps.WriteRow(stripe, matrix, coord.x, matrix.rect.offset.z);
for (int i = 0; i < maxIterations; i++) //ten tries, but hope it will end before that
{
bool change = false;
//horizontally
for (int z = min.z; z < max.z; z++)
{
MatrixOps.ReadLine(stripe, matrix, rect.offset.x, z);
change = PaintBucketMaskStripe(stripe, threshold) || change;
MatrixOps.WriteLine(stripe, matrix, rect.offset.x, z);
}
//vertically
for (int x = min.x; x < max.x; x++)
{
MatrixOps.ReadRow(stripe, matrix, x, matrix.rect.offset.z);
change = PaintBucketMaskStripe(stripe, threshold) || change;
MatrixOps.WriteRow(stripe, matrix, x, matrix.rect.offset.z);
}
if (!change)
{
break;
}
//if (i==maxIterations-1 && !change)
// Debug.Log("Reached max iterations");
}
//filling masked values with val
for (int i = 0; i < matrix.arr.Length; i++)
{
if (matrix.arr[i] < -255)
{
matrix.arr[i] = val;
}
}
}
private static bool PaintBucketMaskStripe(MatrixOps.Stripe stripe, float threshold = 0.0001f)
/// Fills stripe until first unmasked value with -256
/// Returns true if anything masked
{
bool changed = false;
//to right
bool masking = false;
for (int i = 0; i < stripe.length; i++)
{
if (stripe.arr[i] < -255)
{
masking = true;
continue;
}
if (stripe.arr[i] < threshold)
{
if (masking)
{
stripe.arr[i] = -256;
changed = true;
}
}
else
{
masking = false;
}
}
//to left
masking = false;
for (int i = stripe.length - 1; i >= 0; i--)
{
if (stripe.arr[i] < -255)
{
masking = true;
continue;
}
if (stripe.arr[i] < threshold)
{
if (masking)
{
stripe.arr[i] = -256;
changed = true;
}
}
else
{
masking = false;
}
}
return(changed);
}
private void DragSlice(Matrix matrix)
{
Vector2 cursorRect = new Vector2(UI.current.mousePos.x, -UI.current.mousePos.y);
if (DragDrop.TryDrag(Cell.current, cursorRect))
{
Rect rect = new Rect(DragDrop.initialMousePos, DragDrop.totalDelta);
rect = To1PixelRect(rect);
Draw.Rect(FlipVertical(rect), new Color(0, 1, 0, 0.5f));
}
DragDrop.TryStart(Cell.current, cursorRect, Cell.current.GetRect());
if (DragDrop.TryRelease(Cell.current, cursorRect))
{
Rect rect = new Rect(DragDrop.initialMousePos, DragDrop.totalDelta);
rect = To1PixelRect(rect);
int x = (int)rect.x; // + matrix.rect.offset.x;
int z = (int)(rect.y + 1); //ceil? //)matrix.rect.size.z - (int)rect.y + matrix.rect.offset.z - 1;
if (rect.width != 0 && rect.height != 0)
{
if (rect.width > rect.height)
{
//line = new float[(int)rect.width];
slice = new MatrixOps.Stripe((int)rect.width);
MatrixOps.ReadLine(slice, matrix, x, z);
}
else
{
//line = new float[(int)rect.height];
slice = new MatrixOps.Stripe((int)rect.height);
MatrixOps.ReadRow(slice, matrix, x, z - slice.length);
}
//{
// slice = new Matrix.Stripe( Mathf.Max((int)rect.width, (int)rect.height) );
// matrix.ReadDiagonal(stripe, x, z);
//}
sliceRect = rect;
//MatrixLineTesterWindow lineTesterWindow = (MatrixLineTesterWindow)GetWindow(typeof (MatrixLineTesterWindow));
//lineTesterWindow.src = slice;
}
}
}
