"Implementing a 2D graphical user interface on a three.js

Struggling to create a 2D graphical user interface on the renderer. The challenge lies in positioning the 2D GUI dynamically based on the width of an element drawn in threejs (the element has a width of X using threejs units, and the menu needs to be positioned 50px to the right of its rightmost side, etc).

Is there a solution to this issue? Would it be best to draw directly on the renderer using sprites or utilize DOM elements?

Answer №1

Absolutely, utilizing DOM elements is the primary option for handling this task (as far as I know, sprites involve images). However, if you require three-dimensional movement of your elements, the css renderer would be necessary.

  • If the geometry of your object already includes a width property, utilize it.

  • If not, calculate the bounding box to determine it;

Next, determine the appropriate multiplication factor to convert this value into pixels in order to fit your layout.

Answer №2

To enhance your user interface, utilize HTML DOM elements to create your GUI and ensure it's positioned absolutely on the renderer instead of being hidden below it. See the following example:

<body>
<div id="gui">Sample GUI </div> 
<!--Feel free to customize this division - I've used the text "Sample GUI" as an example-->
<style>
#gui {
position: absolute;
top: topPosition%;
left: leftPosition%;
right: rightPosition%;
bottom: bottomPosition%;
}
</style>

By incorporating this code snippet, your GUI elements will be visible on the renderer. You can also fine-tune their positions by adjusting the top, left, right, and bottom properties in the CSS.

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