@Override
public void update(int screenWidth, int screenHeight, boolean centerCamera) {
// Fit min size to the screen.
worldWidth = minWorldWidth;
worldHeight = minWorldHeight;
Vector2 scaled = Scaling.fit.apply(worldWidth, worldHeight, screenWidth, screenHeight);
// Extend in the short direction.
viewportWidth = Math.round(scaled.x);
viewportHeight = Math.round(scaled.y);
if (viewportWidth < screenWidth) {
float toViewportSpace = viewportHeight / worldHeight;
float toWorldSpace = worldHeight / viewportHeight;
float lengthen = (screenWidth - viewportWidth) * toWorldSpace;
if (maxWorldWidth > 0) lengthen = Math.min(lengthen, maxWorldWidth - minWorldWidth);
worldWidth += lengthen;
viewportWidth += Math.round(lengthen * toViewportSpace);
} else if (viewportHeight < screenHeight) {
float toViewportSpace = viewportWidth / worldWidth;
float toWorldSpace = worldWidth / viewportWidth;
float lengthen = (screenHeight - viewportHeight) * toWorldSpace;
if (maxWorldHeight > 0) lengthen = Math.min(lengthen, maxWorldHeight - minWorldHeight);
worldHeight += lengthen;
viewportHeight += Math.round(lengthen * toViewportSpace);
}
// Center.
viewportX = (screenWidth - viewportWidth) / 2;
viewportY = (screenHeight - viewportHeight) / 2;
super.update(screenWidth, screenHeight, centerCamera);
}
@Override
public void performTask() {
viewport.update();
scene.paint(viewport);
sendToScreen(viewport.getImage());
}