LightGeometryHelper.java example

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Terasology-master
/*
 * Copyright 2013 MovingBlocks
 *
 * 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.terasology.rendering.primitives;


import org.lwjgl.opengl.GL11;
import org.lwjgl.util.glu.Sphere;

import static org.lwjgl.opengl.GL11.glCallList;
import static org.lwjgl.opengl.GL11.glEndList;
import static org.lwjgl.opengl.GL11.glGenLists;
import static org.lwjgl.opengl.GL11.glNewList;

public final class LightGeometryHelper {

    private static int displayListSphere = -1;

    private LightGeometryHelper() {
    }

    public static void renderSphereGeometry() {
        if (displayListSphere == -1) {
            displayListSphere = glGenLists(1);

            Sphere sphere = new Sphere();

            glNewList(displayListSphere, GL11.GL_COMPILE);

            sphere.draw(1, 8, 8);

            glEndList();
        }

        glCallList(displayListSphere);
    }
}