Path Mask

Name	Type	Description
パス path	Path Required	マスク化するベジェパス

Name	Type	Description
画像 output	Image	パスから生成された白+アルファのマスク画像

Parameters

Name	Type	Default	Range	Description / Options
幅 width	Int	64	1–1024	キャンバスの幅（ピクセル）
高さ height	Int	64	1–1024	キャンバスの高さ（ピクセル）
重なり方 fill_rule	Enum	Union	—	重なった閉じパスをどう面として扱うか全部塗る`Union` どれか1つの閉じたパスの中にあれば塗ります。普通に図形を重ねたいときはこれです中を穴にする`EvenOdd` 重なるたびに塗る/抜くが切り替わります。ドーナツや枠を作りたいときに使います向きで穴を決める`NonZero` パスを描いた向きで塗りか穴かを決めます。外周と穴を自分で描き分けたい上級者向けです
ピクセルパーフェクト pixel_perfect	Bool	false	—	ピクセルパーフェクト補正後の輪郭を基準にマスクを作成
PP モード pp_mode	Enum	RemoveCorner	—	ピクセルパーフェクト補正でどちらの冗長ピクセルを削除するか対角優先`Diagonal` 水平ステップを削除してより対角的なラインに直線優先`Cardinal` 垂直ステップを削除してより水平/垂直的なラインに角削除`RemoveCorner` L字の角ピクセルを優先して削除角保持`KeepCorner` L字の角ピクセルを優先して保持
閉パス外積モード pp_closed_cross	Bool	false	—	閉じたサブパスに外積ベースの内/外エッジ削除を適用
閉パス削除側 pp_closed_side	Enum	Outer	—	閉パスのどちら側のエッジを削除するか内側`Inner` 内側のエッジを削除外側`Outer` 外側のエッジを削除

Overview

Converts closed paths into a white + alpha mask image. It turns a free-form shape drawn in a path editor into something usable for a cutout (mask) or a scatter area (mask_scatter). It bridges "draw the shape as a path" and "determine its use as a mask."

Usage tips

The go-to flow is multi_path_editor → path_mask → mask (clip an image), or → mask_scatter (scatter within the area).
For a shape with a hole, use fill_rule = EvenOdd: draw an outer and inner boundary to create a doughnut or frame mask.
Enable pixel_perfect when the line from path_stroke and the silhouette must match exactly.
Standard PP cleanup uses pp_mode. For a closed path with pp_closed_cross enabled, pp_closed_side is used instead.
Use path_fill when you need a colored fill image instead of white.

Related nodes

mask / mask_boolean — use or further combine the mask
mask_scatter — use it as an area
path_fill — when you need a colored fill
path_reverse — control holes under NonZero

Fill rules

Mode	Description
Union / Fill all	Fills a point if it is inside any closed path. This is the basic mode for simply overlapping shapes.
EvenOdd / Cut out the inside	Alternates fill and cutout on every overlap. Suited to hollow centers such as doughnuts or frames.
NonZero / Determine holes by direction	Uses path direction to determine whether an area is filled or cut out. An advanced mode for drawing outer boundaries and holes explicitly.

Pixel perfect

Off: builds the mask from the normal outline.
On: builds the mask from the same PP-corrected outline as Path Stroke.

Enable it when the appearance of Path Stroke must match the filled silhouette.

Algorithm

For closed subpaths only, obtain the outline pixel sequence with rasterize_subpath.
Treat all subpaths as one face and test the center of every pixel with fill_rule to determine inside/outside.
Draw white (1,1,1,1) in the fill area and outline, leaving everything else transparent.

Examples

Create a mask from a path

[Multi Path] → path → [Path Mask(fill_rule:Union)] → [Preview]

Clip an image to a path shape

[Pixel Canvas] → source → [Mask] → [Preview]
                         ↑
               [Path Mask] → mask

Define an area for surface scattering

[Multi Path] → [Path Mask] → [Mask Scatter]

Notes

Open subpaths are ignored.
If there is no closed subpath, or no Path is connected, the result is transparent.
Unlike PathFill, this treats multiple subpaths together as one face.
The output is a white + alpha image intended for use with the Mask node.
Use Union / Fill all when overlapping areas should remain filled.

Input Ports

Output Ports