/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package com.badlogic.gdx.utils.viewport;
import com.badlogic.gdx.graphics.Camera;
import com.badlogic.gdx.graphics.OrthographicCamera;
/** A viewport where the world size is based on the size of the screen. By default 1 world unit == 1 screen pixel, but this ratio
* can be {@link #setUnitsPerPixel(float) changed}.
* @author Daniel Holderbaum
* @author Nathan Sweet */
public class ScreenViewport extends Viewport {
private float unitsPerPixel = 1;
/** Creates a new viewport using a new {@link OrthographicCamera}. */
public ScreenViewport () {
this(new OrthographicCamera());
}
public ScreenViewport (Camera camera) {
setCamera(camera);
}
@Override
public void update (int screenWidth, int screenHeight, boolean centerCamera) {
setScreenBounds(0, 0, screenWidth, screenHeight);
setWorldSize(screenWidth * unitsPerPixel, screenHeight * unitsPerPixel);
apply(centerCamera);
}
public float getUnitsPerPixel () {
return unitsPerPixel;
}
/** Sets the number of pixels for each world unit. Eg, a scale of 2.5 means there are 2.5 world units for every 1 screen pixel.
* Default is 1. */
public void setUnitsPerPixel (float unitsPerPixel) {
this.unitsPerPixel = unitsPerPixel;
}
}