Hello everyone, I am experimenting with Image Processing and so far I managed to display a rotating propeller by loading 4 pictures depicting 4 different positions of the propeller and using a delay function I can adjust the speed at which these images are changed thus making the propeller rotate faster or slower, I also managed to display a vertical meter and the user can increase or decrease the value of the pointer on the metre by tapping on the correct button. Now here is the complicated task: I wish to program a dashboard gauge something like this (in this link: How to create Excel KPI Dashboard with Gauge control - YouTube). I know that the background is a fixed image but I need some help/examples on the mathematics involved to rotate the needle. Do you have any ideas, examples, sample codes or methods that I can use? Thank you for your time and help!!
