java计算二个四边形的重贴面积

判断rect2在rect1上重贴面积

 public boolean calculateAreas(TbCusCameraRecognitionAreas rect1, TbCusCameraRecognitionAreas rect2) {
        if (rect1 == null || rect2 == null) {
            return true;
        }
        try {
            double p1_x = Double.parseDouble(rect1.getImgX());//rect1左下角X
            double p1_y = Double.parseDouble(rect1.getImgY());//rect1左下角Y
            double p2_x = p1_x + Double.parseDouble(rect1.getImgW());//rect1右上角X
            double p2_y = p1_y + Double.parseDouble(rect1.getImgH());//rect1域右上角Y
            double p3_x = Double.parseDouble(rect2.getImgX());//rect2左下角X
            double p3_y = Double.parseDouble(rect2.getImgY());//rect2左下角Y
            double p4_x = p3_x + Double.parseDouble(rect2.getImgW());//rect2右上角X
            double p4_y = p3_y + Double.parseDouble(rect2.getImgH());//rect2右上角X

            //当没有重叠的时候
            if (p1_x > p4_x || p2_x < p3_x || p1_y > p4_y || p2_y < p3_y) {
                return false;
            }
            //计算重叠的宽
            double wid = Math.min(p2_x, p4_x) - Math.max(p1_x, p3_x);
            //计算重叠的高
            double hight = Math.min(p2_y, p4_y) - Math.max(p1_y, p3_y);
            double overlapArea = wid * hight;//重叠的面积
            log.info("重叠面积：{}", overlapArea);
            //识别的面积
            double totalArea = Double.parseDouble(rect2.getImgH()) * Double.parseDouble(rect2.getImgW());
            log.info("算法识别面积：{}", totalArea);
            log.info("占比：{}", (overlapArea / totalArea));
            //重叠面积占用识别的面积，大于等于配置的百分比，就通过
            if ((overlapArea / totalArea) < scale) {
                return false;
            }
            return true;
        } catch (Exception e) {
            log.error("计算重叠面积错误", e);
            return false;
        }
    }