javascript - 如何在fabric js中找到Polygon的绝对坐标？

Question

如果我在缩放或移动后得到分数，我会得到一些错误的分数。如何在fabric js中找到Polygon的绝对坐标？

var onObjectScaling = function(eventObj) {
        if (target.type === 'dpolygon') {
            target.minX *= target.scaleX;
            target.minY *= target.scaleY;
            var maxX = target.minX;
            var maxY = target.minY;
            angular.forEach(target.points, function (v) {
                v.x *= target.scaleX;
                v.y *= target.scaleY;
                maxX = Math.max(maxX, v.x);
                maxY = Math.max(maxY, v.y);
            });
        }
};

Answer 1

最后，经过一番尝试，我找到了计算绝对坐标的正确方法

angular.forEach(object.points, function(point) { 
   point.x = object.left + (point.x - object.minX); 
   point.y = object.top + (point.y - object.minY); 
});