com.auroraengine.opengl.viewport.Viewport.java Source code

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Here is the source code for com.auroraengine.opengl.viewport.Viewport.java

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/*
 * Copyright (C) 2017 LittleRover
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.auroraengine.opengl.viewport;

import com.auroraengine.camera.Camera;
import com.auroraengine.opengl.GLException;
import com.auroraengine.opengl.gui.GUI;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.lwjgl.opengl.GL11;

/**
 *
 * @author LittleRover
 */
public abstract class Viewport {

    public Viewport() {
        gui = new GUI(this);
    }

    private volatile Camera camera;
    private final GUI gui;
    private volatile boolean isactive = false;

    private final Lock lock = new ReentrantLock();
    private final Condition condition = lock.newCondition();

    public Camera getCamera() {
        return this.camera;
    }

    public abstract int getHeight();

    public abstract int getWidth();

    public abstract int getX();

    public abstract int getY();

    public boolean isActive() {
        return isactive;
    }

    public void render() throws GLException {
        setViewport();

        gui.renderOpaque();

        if (camera != null) {
            // TODO: Render out from Camera.
            // camera.render(this);
        }

        gui.renderTranslucent();

        try {
            lock.lock();
            condition.signalAll();
        } finally {
            lock.unlock();
        }
    }

    public void setActive(boolean b) {
        this.isactive = true;
    }

    // TODO: Requires proper handling of locks.
    public Camera setCamera(Camera camera) {
        try {
            lock.lock();
            condition.await();
            this.camera = camera;
        } catch (InterruptedException ex) {
        } finally {
            lock.unlock();
        }
        return this.camera;
    }

    public void setViewport() {
        GL11.glViewport(getX(), getY(), getWidth(), getHeight());
    }
}