loadCanvases(
        sources,
        texturesOptions,
        successCallback,
    ) {
        for(let i = 0; i < sources.length; i++) {
            this.loadCanvas(sources[i], texturesOptions, successCallback);
        }
    }
This method loads an array of images by calling loadCanvas() for each one of them

     params:
     @sources (array of canvas): array of html canvases elements
     @texturesOptions (object): parameters to apply to the textures, such as sampler name, repeat wrapping, filters, anisotropy...
     @successCallback (function): function to execute when each source has been loaded
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