Documentation

This is machine translation

Translated by
Mouseover text to see original. Click the button below to return to the English verison of the page.

camlight

Create or move light object in camera coordinates

Syntax

```camlight('headlight') camlight('right') camlight('left') camlight camlight(az,el) camlight(...,'style') camlight(lgt,...) camlight(ax,...) lgt = camlight(...) ```

Description

`camlight('headlight')` creates a light at the camera position.

`camlight('right')` creates a light right and up from camera.

`camlight('left')` creates a light left and up from camera.

`camlight` with no arguments is the same as `camlight('right')`.

`camlight(az,el)` creates a light at the specified azimuth (`az`) and elevation (`el`) with respect to the camera position. The camera target is the center of rotation and `az` and `el` are in degrees.

`camlight(...,'style')` defines the style argument using one of two values:

• `local` (default) — The light is a point source that radiates from the location in all directions.

• `infinite` — The light shines in parallel rays.

`camlight(lgt,...)` uses the light specified by `lgt`.

`camlight(ax,...)` uses the axes specified by `ax` instead of the current axes.

`lgt = camlight(...)` returns the light object.

`camlight` sets the light object `Position` and `Style` properties. A light created with `camlight` does not track the camera. In order for the light to stay in a constant position relative to the camera, call `camlight` whenever you move the camera.

Examples

collapse all

Create a light positioned to the left of the camera and then reposition the light each time the camera moves.

```surf(peaks) axis vis3d h = camlight('left'); for i = 1:20 camorbit(10,0) camlight(h,'left') pause(.1) end```