agentscript/src/MapDraw.js

AgentScript Model in Model/View architecture

import * as util from '../src/utils.js'
import TwoDraw from '../src/TwoDraw.js'

// make sure world is a geoworld
// separate drawoptions from viewoptions if needed
// default patch colors to transparent
// default div to a canvas

class MapDraw extends TwoDraw {
    constructor(model, viewOptions = {}, drawOptions = {}) {
        if (!model.world.bbox) throw Error('MapDraw: model must use GeoWorld')

        // too slick:
        // drawOptions = viewOptions.drawOptions || drawOptions
        // if (viewOptions.drawOptions) delete viewOptions.drawOptions
        //
        // drawOptions.patchesColor = drawOptions.patchesColor || 'transparent'
        // viewOptions.div = viewOptions.div || util.createCanvas(0, 0)

        // clearer:
        // if (viewOptions.drawOptions) {
        //     // move drawOptions out of viewOptions
        //     drawOptions = viewOptions.drawOptions
        //     delete viewOptions.drawOptions
        // }
        drawOptions = TwoDraw.separateDrawOptions(viewOptions, drawOptions)

        if (!drawOptions.patchesColor) {
            drawOptions.patchesColor = 'transparent'
        }
        if (!viewOptions.div) {
            viewOptions.div = util.createCanvas(0, 0) // the view will resize
        }

        super(model, viewOptions, drawOptions)
    }
}

export default MapDraw