Using the mouse position to zoom in on a map

[jafal]

Look at this topic may you find some hints

How to make a 2d Zoom and Pan

Hi everyone, I wrote this example to explain how to Zoom and Pan with the mouse in Processing. It uses texture coordinates (texcoords). Enjoy! [zoom-pan-with-mouse-processing-small] float tx, ty; float scale; PImage img; float xratio, yratio; float minScale, maxScale; void setup() { //use P2D or P3D to be able to use texture() size(450, 360, P2D); //load image and calculate window/image ratio img = loadImage("1337.jpg"); xratio = float(width) / img.width; yratio = float(heigh…