# abclines3d

From rgl v0.100.50
by Duncan Murdoch

##### Lines intersecting the bounding box

This adds mathematical lines to a scene. Their intersection with the current bounding box will be drawn.

- Keywords
- dynamic

##### Usage

```
rgl.abclines(x, y = NULL, z = NULL, a, b = NULL, c = NULL, ...)
abclines3d(x, y = NULL, z = NULL, a, b = NULL, c = NULL, ...)
```

##### Arguments

- x, y, z
Coordinates of points through which each line passes.

- a, b, c
Coordinates of the direction vectors for the lines.

- ...
Material properties.

##### Details

These functions draw the segment of a line that intersects the current bounding box of the scene using the parametrization \( (x, y, z) + (a, b, c) * s \) where \(s\) is a real number.

Any reasonable way of defining the
coordinates `x, y, z`

and `a, b, c`

is acceptable.
See the function `xyz.coords`

for details.

##### Value

A shape ID of the object is returned invisibly.

##### See Also

`planes3d`

, `rgl.planes`

for mathematical planes.

`segments3d`

draws sections of lines that
do not adapt to the bounding box.

##### Examples

```
# NOT RUN {
plot3d(rnorm(100), rnorm(100), rnorm(100))
abclines3d(0, 0, 0, a = diag(3), col = "gray")
# }
```

*Documentation reproduced from package rgl, version 0.100.50, License: GPL*

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