Advise on using class to create stimuli objects

Online experiments
1

Hi there,
Can someone have a look and see if I have overlooked something here, I have the script running in Python correctly (and lots more exiting code as well).
I have reduced the code from a larger project to highlight my issue.

I have a class to define a small box and created 3 instances of it in Begin Experiment

class myBox {
    constructor(pos, name, color) {
        this.pos = pos;
        this.name = name;
        this.color = color;
        
        this.polygon = new visual.Rect(
        {"win": psychoJS.window, "name": (this.name + "_polygon"),
        "width": [0.05, 0.05][0], "height": [0.05, 0.05][1],
        "ori": 0, "pos": [this.pos[0], (this.pos[1] + 0.025)],
        "lineWidth": 1, "lineColor": [1, 1, 1],
        "lineColorSpace": "rgb", "fillColor": this.color,
        "fillColorSpace": "rgb", "opacity": 1, "depth": (- 2.0),
        "interpolate": true, "autoLog": false});
    }
    Updates() {
        if ((this.polygon.status === NOT_STARTED)) {
            this.polygon.setAutoDraw(true);
        }
    }
}
yellowBox = new myBox([(- 0.2), (- 0.2)], "yellowBox", [1, 1, (- 1)]);
greenBox = new myBox([0, (- 0.2)], "greenBox", [(- 1), 1, (- 1)]);
blueBox = new myBox([0.2, (- 0.2)], "blueBox", [(- 1), (- 1), 1]);

In Each Frame I run the Updates() function

yellowBox.Updates();
greenBox.Updates();
blueBox.Updates();

When run online in pilot mode the boxes are drawn on the screen in the correct places as defined by the constructor but they are all black and even if I write directly into the parameter, instead of this.color, it does not change the colour.

Can you direct me to some examples of using classes with Psychopy Components, I have been having issues with ImageStim as well when using a class to construct multiple instances and I think my problems might be related and I am assuming too much without the knowledge.

Thanks

2

Have a look at my crib sheet for how I deal with colours by setting them as variables.

3

Thanks

yellow = new util.Color([1, 1, 0]);

as a variable, that did the trick :slightly_smiling_face:

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