public static void Silhouette(Spline[] splines, MatrixWorld strokeMatrix, MatrixWorld dstMatrix)
/// Fills all pixels within closed spline with 1, and all outer pixels with 0
/// Pixels directly in the spline are filled with 0.5
/// Requires the matrix with line stroked. StrokeMatrix and DstMatrix could be the same
{
DebugGizmos.Clear("Slhuette");
if (strokeMatrix != dstMatrix)
{
dstMatrix.Fill(strokeMatrix);
}
//and then using dst matrix only
CoordRect rect = dstMatrix.rect;
Coord min = rect.Min; Coord max = rect.Max;
for (int x = min.x; x < max.x; x++)
{
for (int z = min.z; z < max.z; z++)
{
int pos = (z - rect.offset.z) * rect.size.x + x - rect.offset.x;
if (dstMatrix.arr[pos] < 0.01f) //free from stroke and fill
{
Vector2D pixelPos = (Vector2D)dstMatrix.PixelToWorld(x, z);
bool handness = Spline.Handness(splines, pixelPos) >= 0;
DebugGizmos.DrawDot("Slhuette", (Vector3)pixelPos, 6, color: handness ? Color.red : Color.green, additive: true);
dstMatrix.PaintBucket(new Coord(x, z), handness ? 0.75f : 0.25f);
}
}
}
}
