These days I am investigating the map used in Hongkong and China mainland since it uses the different standard according to Chinese law. There are some several interesting points can be discussed here: Chinese Coordinate System GCJ-02 vs GPS WGS-84 Today most of the world uses the World Geodetic System WGS-84, where 84 …
Read MoreThese days I need to implement a component to draw a line on the given image and this line should be scalable, draggable and limited within the image. So here are the steps to implement it. Konva Definitely we need canvas to complete it, but instead of using canvas directly, it's better to use some mature library, like …
Read MoreThe first time I touched the React-hook-form was in 2020 and it also was the first time I learned React's new concept Hooks. During that time we compared all the popular form libraries, Formik, react-form, final form and etc, but we finally chose the React-hook-form even though it was still under the development during …
Read More