Function formatColor

src/lib/gl_format_color.js:32–71

(containerIn, opacityIn, len)

}

function formatColor(containerIn, opacityIn, len) {
    var colorIn = containerIn.color;
    if(colorIn && colorIn._inputArray) colorIn = colorIn._inputArray;

    var isArrayColorIn = isArrayOrTypedArray(colorIn);
    var isArrayOpacityIn = isArrayOrTypedArray(opacityIn);
    var cOpts = Colorscale.extractOpts(containerIn);
    var colorOut = [];

    var sclFunc, getColor, getOpacity, colori, opacityi;

    if(cOpts.colorscale !== undefined) {
        sclFunc = Colorscale.makeColorScaleFuncFromTrace(containerIn);
    } else {
        sclFunc = validateColor;
    }

    if(isArrayColorIn) {
        getColor = function(c, i) {
            // FIXME: there is double work, considering that sclFunc does the opposite
            return c[i] === undefined ? colorDfltRgba : rgba(sclFunc(c[i]));
        };
    } else getColor = validateColor;

    if(isArrayOpacityIn) {
        getOpacity = function(o, i) {
            return o[i] === undefined ? opacityDflt : validateOpacity(o[i]);
        };
    } else getOpacity = validateOpacity;

    if(isArrayColorIn || isArrayOpacityIn) {
        for(var i = 0; i < len; i++) {
            colori = getColor(colorIn, i);
            opacityi = getOpacity(opacityIn, i);
            colorOut[i] = calculateColor(colori, opacityi);
        }
    } else colorOut = calculateColor(rgba(colorIn), opacityIn);

    return colorOut;
}

function parseColorScale(cont) {
    var cOpts = Colorscale.extractOpts(cont);