Bucket Tool

When to use

• To fill a closed region with a single color at once.
• To fill polygons or rectangles by clicking points.

Fill Mode

Pick a mode from the bucket-mode popup at the top of the window.

1. Polygon Fill : Fills the polygon you click out with the mouse.
2. Flood Fill : Fills pixels connected to the click point that share a similar color. Use 'Tolerance' to widen/narrow the match.
3. Rect Fill : Fills the rectangle you drag out.
4. Polygonal Lasso Fill : Click to build a free-form polygon, then fill.
5. Island Fill : Fills the entire UV island that contains the clicked face.
6. Isolation Fill : Fills every face connected to the clicked face through the 3D mesh by walking edge-adjacent neighbors. Multiple UV islands separated by UV seams are all filled together as long as they belong to the same connected mesh piece.

Options

1. Triangle Mode : Fill evaluation handles boundaries per triangle.
2. Erase Mode : Instead of filling, makes the region transparent.

How to use (Flood Fill example)

1. Press 'F', then choose Flood Fill in the mode popup.
2. Keep Tolerance near to match only exact colors. Or raise it to 50-100 to include nearby colors.
3. Click once inside the target area. It fills immediately.

Example