> For the complete documentation index, see [llms.txt](https://docs.icraft.design/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.icraft.design/editor-features/resource-panel/basic-graphics/line.md).
# Line
The **Line component** is used to draw **paths, directions, workflows, connections, or illustrative outlines** within a scene. It is widely applied in scenarios such as process flow visualization, pipeline routing explanation, spatial guidance, and logical relationship annotation.
Lines support multi-segment polylines, customizable styles, and directional arrows, making them one of the core components in the iCraft editor that combines both expressiveness and connectivity.
***
## How to Draw a Line?
#### Create a Line
* Click the **Line icon** in the system asset library, or drag the icon directly onto the canvas.
* If there are already elements on the canvas:
* Click an existing element, then click the Line icon in the floating toolbar on the right.\
This allows you to quickly create a line starting from that element and connect it to another element. When the connected elements move, the line will automatically remain attached.
* Alternatively, click on an empty area of the canvas to create control anchor points and freely draw a line. Press **`ENTER`** to finish drawing.
***
#### Edit a Line
* **Drag Nodes**\
After selecting a line, you can drag the **control anchor points** along the path to adjust its direction.
* **Add Nodes**\
With the line selected, click anywhere along the path to insert a new control anchor point.
* **Delete Nodes**\
Select a control anchor point and press **`Delete`** to remove it.
* **Create Line Branches**\
Select a control anchor point and click the 「**Arrow**」 icon in the floating toolbar on the right to create a new branch line starting from that point.
* **Insert Text**\
Select a control anchor point and click the 「**Text**」 icon in the floating toolbar to add a text annotation at that point.
***
## Special Parameters of the Line
#### Shape
**Routing Mode**\
Determines how line segments connect to each other. Select from the dropdown menu. iCraft provides four common routing styles:
* **Normal Routing** – Straight lines at any angle; suitable for scenes requiring high flexibility.
* **Orthogonal Routing** – 90° horizontal/vertical lines; suitable for clearly structured diagrams emphasizing engineering standards.
* **45° Routing** – Balances engineering style and visual aesthetics; commonly used in workflow or system diagrams.
* **Curved Routing** – Ideal for flexible connections, complex paths, or irregular routes.
***
#### Style
* **Color**\
Sets the display color of the line using the color picker.\
Default color: **`#000000`**
* **Line Width**\
Controls the thickness of the line.\
Default value: 0.05\
Adjustable range: `0.01 – 0.2`
* **Dashed Line**\
Toggle switch. Controls whether the line is displayed as a dashed line.\
Default: Off (solid line)
* **Dash Scale**\
Effective only when **Dashed Line** is enabled. Controls the density of the dashed pattern. Smaller values produce longer dashes and wider spacing.\
Default value: 1\
Adjustable range: `0.1 ~ 10`
***
#### Arrow
* **Visible**\
Toggle switch. Determines whether an arrow is displayed at the end of the line.\
Default: Enabled
* **Two-Way**\
Toggle switch. Determines whether arrows appear at **both ends** of the line.\
Default: Disabled
* **Size**\
Defines the size of the arrow.\
Default value: 0.05\
Adjustable range: `0.01 ~ 0.2`
* **Position**\
Controls the offset ratio of the arrow along the end of the line.\
Default value: 1 (at the end of the line)\
Adjustable range: `0 ~ 1`
---
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