private void ReadData(Sprite sprite)
{
for (int y = _yMax - 1; y >= _yMin; y--)
{
for (int x = _xMin; x < _xMax; x++)
{
if (sprite.texture.GetPixel(x, y).a > 0.0f)
{
_pixels[x, y] = new PixelDataHigh(x, y, _size);
var stripe = new MeshStripeHigh(_pixels[x, y]);
x++;
while (sprite.texture.GetPixel(x, y).a > 0.0f && x < _xMax)
{
_pixels[x, y] = new PixelDataHigh(x, y, _size);
stripe.AddPixelToTheStripe(_pixels[x, y]);
x++;
}
bool any = false;
foreach (var s in _stripes)
{
if (s.MergeableToTheBottom(stripe))
{
any = true;
break;
}
}
if (!any)
{
_stripes.Add(stripe);
}
}
}
}
for (int y = _yMax - 1; y >= _yMin; y--)
{
for (int x = _xMin; x < _xMax; x++)
{
if (_pixels[x, y] == null)
{
continue;
}
_pixels[x, y].TopCovered = y != _yMax - 1 && _pixels[x, y + 1] != null;
_pixels[x, y].RightCovered = x != _xMax - 1 && _pixels[x + 1, y] != null;
_pixels[x, y].LeftCovered = x != _xMin && _pixels[x - 1, y] != null;
_pixels[x, y].BottomCovered = y != _yMin && _pixels[x, y - 1] != null;
}
}
}
private void MergeStripeTotheBottom(MeshStripeHigh stripeHigh)
{
_bottomLeftPixel = stripeHigh._bottomLeftPixel;
_bottomRightPixel = stripeHigh._bottomRightPixel;
}
public MeshStripeHigh(PixelDataHigh startPixel)
{
_topLeftPixel = _bottomLeftPixel = _topRightPixel = _bottomRightPixel = startPixel;
}
public void AddPixelToTheStripe(PixelDataHigh pixel)
{
pixel.LeftCovered = true;
_topRightPixel = _bottomRightPixel = pixel;
}
private void CoverPixelSides(PixelDataHigh p)
{
var pixel = p;
var tr = new int[6];
if (!pixel.TopCovered)
{
int x = pixel.Position.X;
while (x >= _xMin && _pixels[x, pixel.Position.Y] != null && !_pixels[x, pixel.Position.Y].TopCovered)
{
pixel = _pixels[x, pixel.Position.Y];
x--;
}
var coord = pixel.VertPosition(Corner.TopLeft);
tr[5] = _vertMatrix[coord.X, coord.Y].X;
tr[2] = tr[3] = _vertMatrix[coord.X, coord.Y].Y;
var endPixel = pixel;
x = pixel.Position.X;
while (x < _xMax && _pixels[x, pixel.Position.Y] != null && !_pixels[x, pixel.Position.Y].TopCovered)
{
endPixel = _pixels[x, pixel.Position.Y];
endPixel.TopCovered = true;
x++;
}
coord = endPixel.VertPosition(Corner.TopRight);
tr[1] = tr[4] = _vertMatrix[coord.X, coord.Y].X;
tr[0] = _vertMatrix[coord.X, coord.Y].Y;
}
else if (!pixel.RightCovered)
{
int y = pixel.Position.Y;
while (y < _yMax && _pixels[pixel.Position.X, y] != null && !_pixels[pixel.Position.X, y].RightCovered)
{
pixel = _pixels[pixel.Position.X, y];
y++;
}
var coord = pixel.VertPosition(Corner.TopRight);
tr[5] = _vertMatrix[coord.X, coord.Y].X;
tr[2] = tr[3] = _vertMatrix[coord.X, coord.Y].Y;
var endPixel = pixel;
y = pixel.Position.Y;
while (y >= _yMin && _pixels[pixel.Position.X, y] != null && !_pixels[pixel.Position.X, y].RightCovered)
{
endPixel = _pixels[pixel.Position.X, y];
endPixel.RightCovered = true;
y--;
}
coord = endPixel.VertPosition(Corner.BottomRight);
tr[1] = tr[4] = _vertMatrix[coord.X, coord.Y].X;
tr[0] = _vertMatrix[coord.X, coord.Y].Y;
}
else if (!pixel.BottomCovered)
{
int x = pixel.Position.X;
while (x >= _xMin && _pixels[x, pixel.Position.Y] != null && !_pixels[x, pixel.Position.Y].BottomCovered)
{
pixel = _pixels[x, pixel.Position.Y];
x--;
}
var coord = pixel.VertPosition(Corner.BottomLeft);
tr[0] = _vertMatrix[coord.X, coord.Y].X;
tr[2] = tr[3] = _vertMatrix[coord.X, coord.Y].Y;
var endPixel = pixel;
x = pixel.Position.X;
while (x < _xMax && _pixels[x, pixel.Position.Y] != null && !_pixels[x, pixel.Position.Y].BottomCovered)
{
endPixel = _pixels[x, pixel.Position.Y];
endPixel.BottomCovered = true;
x++;
}
coord = endPixel.VertPosition(Corner.BottomRight);
tr[1] = tr[4] = _vertMatrix[coord.X, coord.Y].X;
tr[5] = _vertMatrix[coord.X, coord.Y].Y;
}
else if (!pixel.LeftCovered)
{
int y = pixel.Position.Y;
while (y < _yMax && _pixels[pixel.Position.X, y] != null && !_pixels[pixel.Position.X, y].LeftCovered)
{
pixel = _pixels[pixel.Position.X, y];
y++;
}
var coord = pixel.VertPosition(Corner.TopLeft);
tr[0] = _vertMatrix[coord.X, coord.Y].X;
tr[2] = tr[3] = _vertMatrix[coord.X, coord.Y].Y;
var endPixel = pixel;
y = pixel.Position.Y;
while (y >= _yMin && _pixels[pixel.Position.X, y] != null && !_pixels[pixel.Position.X, y].LeftCovered)
{
endPixel = _pixels[pixel.Position.X, y];
endPixel.LeftCovered = true;
y--;
}
coord = endPixel.VertPosition(Corner.BottomLeft);
tr[1] = tr[4] = _vertMatrix[coord.X, coord.Y].X;
tr[5] = _vertMatrix[coord.X, coord.Y].Y;
}
_triangles.AddRange(tr);
}
