drawLine
Canonical ID: graphics.line. Nederlands: tekenLijn.
Draws a line between two logical-pixel endpoints using a positive width. Coordinates may be outside the scene; the renderer clips visible work. It is an immediate 2D command, independent of turtle position and heading. Drawing a line does not move the turtle.
Signature
drawLine(x1, y1, x2, y2, width, color)
Arguments
| Parameter | Type | Requirement |
|---|---|---|
x1 |
Number | Finite starting x. |
y1 |
Number | Finite starting y. |
x2 |
Number | Finite ending x. |
y2 |
Number | Finite ending y. |
width |
Number | Finite and greater than 0. |
color |
Text | Nonempty; use portable English/Dutch names or #RGB/#RRGGBB. |
Return value
None.
Example
# language: en
clearCanvas("white")
drawLine(80, 280, 560, 80, 6, "purple")
A diagonal purple line.
Notes and common mistakes
Use the function name for your source language. Its canonical ID is a shared documentation label; you do not type that ID as a call. Giving your own variable or function the same name can hide the built-in. Supply the documented arguments and value types. Pliro reports mismatches when checking can detect them, or when the call runs.
A host is the app or environment running your program. To see a drawing, it needs a renderer, the part that draws on screen. The command-line command pliro run shows text but does not draw these graphics. The host support table explains which effects work in the IDE, browser, native app, and phone preview. A native build reports an unsupported capability instead of leaving it out.
2D uses a 640 × 360 scene with a top-left origin, +X right and +Y down. Both English and Dutch portable color names work in either syntax locale, as do #RGB and #RRGGBB. Other nonempty 2D color text is host-dependent.
Related entries
clearCanvas · rectangle · circle · drawText · Programming guides · Host support · Calls and arguments