79. Flood Fill tool details

The Flood Fill setting in ibis Paint has the most functions in its kind among all the painting apps that are available. Since it packs so many functions, it may be difficult to learn all of them. Also, if your aren’t careful, you might end up coloring the entire canvas without knowing, or filling only a small portion of your image. However, since you can always use the undo function to revert one step, you can try its various functions without worry. Although we will be explaining the Flood Fill settings here, you can also read the Magic Wand settings if you need to, since the two share most functions.

Flood Fill function allows you to fill parts that are similar in color with the color of the starting point. The most used is coating under the line drawing.

If the lines of the line drawing are closed off, the fill stays inside of it. If there is an opening, the color may spread to the entire canvas. If it has, do not panic; use the undo function (reverts 1 step) to return to the original state.

Next, we’ll explain the Flood Fill setting window.After selecting ①the Flood Fill tool, tap on ②the % button to open the Flood Fill setting.

①Flood Fill Easy Settings ... Since it is quite difficult to adjust all the settings for the Flood Fill function, the Flood Fill function by default has easy setting enabled to get you started quickly. Even if you change the settings after turning easy setting off, once you leave for My Gallery, easy setting will be turned on again. Once you feel like you have a good grasp of the Flood Fill functions and settings, you can press the gear icon in the Tool Selection window, and turn on “Save Flood Fill Settings”. If you do this, the Flood Fill settings will remain as they were changed, even after leaving for My Gallery. Here, in order to adjust other settings, please turn easy setting off.
②Strength ... It lets you set how much similar in color as the starting color the Flood Fill tool should cover.

The strength of the Flood Fill settings is being able to set how similar in color as the starting color the Flood Fill tool will cover (Flood Fill tool will cover up to a certain difference in color as the starting color). If there is an airbrushed gradation in the image, you can set the strength setting to 0%, and the Flood Fill tool will stop as soon as it encounters a color that is even slightly different from the original color. If you set it to 5%, it will cover a little more area, and 10% will cover even farther. If you set the strength too high, it may leak and cover the entire canvas.

If the strength is set too high, the color will end up leaking through fine and thin edges like this. In this case, try setting the strength to 0%.

Shown above is a picture of a giraffe loaded through image importing, which is filled with 0% strength. If the strength is set to 0%, the color will not be able to spread much. Also the squared and pixellated parts are called JPEG block noise (normally, pictures are saved as JPEG files). Since JPEG files are made up with extremely small squares, if you fill it with 0% strength, you can see what they consist of. In such cases, it’s better to raise the strength value.

Expansion ... Expansion is a setting that lets you either expand or shrink the area (after specifying the area) for coloring with a different color as the initial point. The default value is 1.5px.

Above is a comparison of two illustrations drawn with a G pen (soft), filled with 0 px, and 1.5 px expansion, respectively. Since the line drawing has anti-aliasing (translucent) on the edges, the white is still visible with 0 px expansion. By increasing the expansion value to 1.5 px, you can reduce the white parts visible on the edges.

If you want to fill the speech bubbles in manga, you can shrink it by negative expansion value.

①Boundary ... Boundary is a setting that allows you to decide whether you will use color (RGB) or opacity alone to let the program decide how much it will fill the canvas depending on the closeness of the color to the starting color. When the reference layer (to be described later) is the canvas, the canvas is entirely opaque when the background color is white, so if you select opacity as the boundary, the entire canvas will become colored. If the reference layer is a specified layer or a current layer, it may be better to set the boundary to opacity.
② Reference Layer ... Reference layer can be selected from current layer, specific layer, and canvas. The default setting is canvas. Reference here refers to the area of the image the program references when learning how much the Flood Fill tool should cover. When you select the canvas, you can decide the range by referencing the picture (as shown) that combines all the layers. When you select a specific layer and specify a layer beneath it with the layer selection list, it references that layer and determines the area to be painted. When you select the current layer, the program decides the area to be painted by referencing the current layer. By using the specific layer, you can also have the line drawing and the color filling in different layers: you can draw a line drawing on layer 2, and fill it with layer 1 as the current layer.

After finishing the line drawing and coloring, add a layer just above the bottom of the work’s layers (which contains the background material). You can select that layer as the current layer, and set the expansion to 50 px in the Flood Fill setting, and color with white to draw the outline. Specifically, hide the layer with the background materials, and make the layer background transparent. Afterwards, in the Flood Fill settings, set expansion to 20 px, boundary to opacity, and reference to the canvas. Then, color with white, and unhide the layer with the background materials to create something in the figure shown above.

If there are gaps in the line drawing, it is better to fill them in using a pen with the same color as the fill color. Line drawing of hair, for example, likely has gaps.

The line drawing becomes layer 2. If you want to turn layer 1 brown, fill in the gaps in layer 1 with a brown pen.

In the Flood Fill settings, set the border to color, 0% strength, 1.5 px expansion, and set the reference layer as the canvas, and proceed to fill. When you do so, you will be able to color inside the hair area, as shown above.
Although it is hard to comprehend all of the various features of the Flood Fill function, you can keep trying different things out by reverting to the previous step, using the undo function.


  1. Introduction
  2. Let's Take a Look at Some Sample Artwork
  3. Start Creating an Artwork
  4. Toolbar and Tool Selection
  5. Do Your Draft Sketch by Hand
  6. About Layers
  7. Let’s Trace
  8. Undo and Eraser
  9. Fine Tuning Using the Lasso tool
  10. Check by Reflecting Horizontally
  11. Select Colors in the Color window
  12. Use Color Fill for the Undercoat
  13. Making a Selection with the Magic Wand
  14. Making a Gradation (Shading)
  15. Quick Color Picker Function
  16. Create Highlights and Shadows
  17. Paste a Texture
  18. Let's Merge Layers
  19. Sign Your Artwork
  20. View Your Artwork
  21. Post Your Artwork
  22. Share Your Artwork
  23. Remove-Ads Add-on
  24. Add Color to the Analog Image using Multiply
  25. Selection Layer
  26. Let’s try using Screentone
  27. Clipping is convenient
  28. Changing the color with Alpha Lock
  29. Save Layer as Transparent PNG command
  30. Save Canvas as Transparent PNG command
  31. Naming your layers to manage them
  32. Putting texture to the floor with Perspective Form
  33. Skirt with Mesh Form
  34. Entering text with Text tool
  35. Creating manga with Frame Divider tool
  36. Enlarging the canvas with Canvas Size
  37. Cutting off the canvas with Trim
  38. Canvas creation with resolution (dpi) specification
  39. Changing image resolution with Resize
  40. Texture with Material tool
  41. Straight Ruler
  42. Circular Ruler
  43. Elliptical Ruler
  44. Radial Ruler
  45. Mirror Ruler
  46. Kaleidoscope Ruler
  47. Array Ruler
  48. Stabilizer
  49. Straight line with Drawing tool
  50. Cut, Copy, Paste
  51. Filter: Brightness & Contrast
  52. Filter: Hue Saturation Lightness
  53. Filter: Color Balance
  54. Filter: Extract Drawing
  55. Filter: Change Drawing Color
  56. Filter: Mono Color
  57. Filter: Gray Scale
  58. Filter: Black & White
  59. Filter: Posterize
  60. Filter: Gaussian Blur
  61. Filter: Zooming Blur
  62. Filter: Moving Blur
  63. Filter: Mosaic
  64. Filter: Stroke (Both)
  65. Filter: Stained Glass
  66. Filter: Wet Edge
  67. Filter: Glow (Inner)
  68. Filter: Stroke (Outer)
  69. Filter: Drop Shadow
  70. Filter: Parallel Gradation
  71. Filter: Concentric Gradation
  72. Filter: Radial Line Gradation
  73. Filter: Sphere Lens
  74. Filter: Blur Frame
  75. Switching devices / transferring data with Dropbox
  76. Switching devices / transferring data with SD card on Android
  77. Switching devices / transferring data with PC on iOS
  78. Configuration window details
  79. Flood Fill tool details
  80. Blend mode details
  81. How to upload transparent PNG onto Twitter
  82. Notes About Tracing