Function getColorData

libs/mapv/mapv.js:1470–1478

(color)

}

function getColorData(color) {
    var tmpCanvas = document.createElement('canvas');
    var tmpCtx = tmpCanvas.getContext('2d');
    tmpCanvas.width = 1;
    tmpCanvas.height = 1;
    tmpCtx.fillStyle = color;
    tmpCtx.fillRect(0, 0, 1, 1);
    return tmpCtx.getImageData(0, 0, 1, 1).data;
}

var vs_s = ['attribute vec4 a_Position;', 'void main() {', 'gl_Position = a_Position;', 'gl_PointSize = 30.0;', '}'].join('');