Just black boxes! about threeagent HOT 4 CLOSED

So, it turns out that I can see something if I add in some lighting. Even then though, it's just an edge so really it's better to change the positioning.

So, a few changes 'fixes' the example:

(defn lighting []
  [:object
   [:hemisphere-light {:intensity 0.4
                       :sky-color 0x8890FF
                       :position [0 5 10]}]])

(defn root []
  [:object {:position [0.0 0.0 -5.0]
            :rotation [0 (js/Math.sin (:ticks @state)) 0]}
   [color-box "red" 1.0]
   [growing-sphere]
   [lighting]])

As far as I can tell, this shouldn't be limited to my particular use case and I only started the issue here because this is really just following the examples in the doc. I'd be happy to help add some more content to the examples to avoid potential confusion for others?

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You're absolutely right, the example code is no good without lighting added. Thank you for reporting this, I'd be happy to accept a PR for any doc changes!

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@DougHamil
Thanks for the great work. I have a question regarding black canvas as well.

From the example source code (https://github.com/DougHamil/threeagent-examples/tree/master/tetris) I found
.setClearColor renderer 0xCCCCFF))

which I assume to be the line setting the color of the canvas. Applying this to the current version using re-frame + threeagent, it doesn't seem to work as expected. (in fact, not working at all!)

One thing I didn't do is to require "three" directly into the namespace. Is there any extra configuration for adding this external js library into ns? and is this necessary for using .setClearColor function in the project?

-- self answer
turns out, you need to add ^js (js interop) in between the method you are calling and parameters.
For example,
(.renderer ^js ctx)
instead of
(.renderer ctx)

from threeagent.

You're absolutely right, the example code is no good without lighting added. Thank you for reporting this, I'd be happy to accept a PR for any doc changes!

Apologies, I was too slow to do anything like a pull request. To completely abuse the system however, (because I can't find your email address) can I invite you to present an introduction to our clojure data science community ? You can find me on the Clojure zulip chat: https://clojurians.zulipchat.com/#narrow/stream/150796-zulip

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