org.bladecoder.bladeengine.ui.SceneViewport.java Source code

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Here is the source code for org.bladecoder.bladeengine.ui.SceneViewport.java

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/*******************************************************************************
 * Copyright 2014 Rafael Garcia Moreno.
 * 
 * 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 org.bladecoder.bladeengine.ui;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.math.Vector3;
import com.badlogic.gdx.utils.Scaling;
import com.badlogic.gdx.utils.viewport.Viewport;

public class SceneViewport extends Viewport {

    /** Creates a new viewport using a new {@link OrthographicCamera}. */
    public SceneViewport() {
        camera = new OrthographicCamera();
    }

    @Override
    public void update(int screenWidth, int screenHeight, boolean centerCamera) {
        Vector2 scaled = Scaling.fit.apply(worldWidth, worldHeight, screenWidth, screenHeight);
        viewportWidth = Math.round(scaled.x);
        viewportHeight = Math.round(scaled.y);
        // center the viewport in the middle of the screen
        viewportX = (screenWidth - viewportWidth) / 2;
        viewportY = (screenHeight - viewportHeight) / 2;

        Gdx.gl.glViewport(viewportX, viewportY, viewportWidth, viewportHeight);
        camera.viewportWidth = viewportWidth;
        camera.viewportHeight = viewportHeight;
        if (centerCamera)
            camera.position.set(viewportWidth / 2, viewportHeight / 2, 0);
        camera.update();
    }

    public void getInputUnProject(Vector2 out) {
        out.set(Gdx.input.getX(), Gdx.input.getY());

        unproject(out);
    }

    public void getInputUnProject(Vector3 out) {
        out.set(Gdx.input.getX(), Gdx.input.getY(), 0);

        unproject(out);
    }

    @Override
    public Vector2 unproject(Vector2 out) {
        super.unproject(out);

        if (out.x >= viewportWidth)
            out.x = viewportWidth - 1;
        else if (out.x < 0)
            out.x = 0;

        if (out.y >= viewportHeight)
            out.y = viewportHeight - 1;
        else if (out.y < 0)
            out.y = 0;

        return out;
    }

    @Override
    public Vector3 unproject(Vector3 out) {
        super.unproject(out);

        if (out.x >= viewportWidth)
            out.x = viewportWidth - 1;
        else if (out.x < 0)
            out.x = 0;

        if (out.y >= viewportHeight)
            out.y = viewportHeight - 1;
        else if (out.y < 0)
            out.y = 0;

        return out;
    }
}