Rotating map and camera

Newbie & Debugging Questions
#1

so I’m currently making a isometric game, and have just gotten rotating the world to work.

This is what I use to rotate the world tiles.


    public int getDrawX(){
        double rad = Math.toRadians(Screen.rotateScreen);
        double rotX = (Math.cos(rad) * x) - (Math.sin(rad) * y);
        double rotY = (Math.sin(rad) * x) + (Math.cos(rad) * y);
        
        return (int)((rotY * WIDTH / 2) + (rotX * WIDTH / 2));
    }
    
    public int getDrawY(){
        double rad = Math.toRadians(Screen.rotateScreen);
        double rotX = Math.cos(rad)*x - Math.sin(rad)*y;
        double rotY = Math.sin(rad)*x + Math.cos(rad)*y;
        
        return (int)((rotX * HEIGHT / 2) - (rotY * HEIGHT / 2) - height);
    }

and this is what I use to rotate the screen


        if(e.getKeyCode() == KeyEvent.VK_R){
            Screen.rotateScreen = 90+Screen.rotateScreen%360; 
            
            double rad = Math.toRadians(Screen.rotateScreen);
            double newScreenX = Math.cos(rad)*Screen.offsetX - Math.sin(rad)*Screen.offsetY;
            double newScreenY = Math.sin(rad)*Screen.offsetX + Math.cos(rad)*Screen.offsetY;
            
            Screen.offsetX = (int)newScreenX;
            Screen.offsetY = (int)newScreenY;
        }

The world rotate just fine, but the screen doesn’t follow the rotation.

#2

Seems like there is a problem with your camera.

#3

I know. I thought the 2nd code would rotate the offset X and Y of the view/screen just fine. But It doesn’t, and I have no idea why or how to fix it.

EDIT:
What happens I look on a part of the level. OffsetX: -377 and OffsetY: 374. Then press R so the level gets rotate 90 degrees. I get offsetX: -374 offsetY: -377 and see the part of the level I was watching before.

#4

Those lines look strange

return (int)((rotY * WIDTH / 2) + (rotX * WIDTH / 2));
return (int)((rotX * HEIGHT / 2) - (rotY * HEIGHT / 2) - height);

What is that supposed to do?
I’m guessing the key to this error is in the code you didn’t post. Maybe you rotate in the wrong direction somewhere.

#5

Those lines is to make the tiles render isometrically. What do you mean with code I didn’t post?

#6

Wouldn’t you want your Camera rotating the opposite way as your tiles?