tk.jacklin213.voxelgale.rendering.BasicRenderer.java Source code

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Here is the source code for tk.jacklin213.voxelgale.rendering.BasicRenderer.java

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/* This file is part of VoxelGale
 * 
 * Copyright (c) 2014 jacklin213
 * 
 * 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 tk.jacklin213.voxelgale.rendering;

import org.lwjgl.LWJGLException;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.lwjgl.util.glu.GLU;

/**
 *   Used for basic rendering
 */
public class BasicRenderer {

    private DisplayMode displayMode;

    public void start() {
        try {
            createWindow();
            initGL();
            run();
        } catch (LWJGLException e) {
            e.printStackTrace();
        }
    }

    private void createWindow() throws LWJGLException {
        Display.setFullscreen(false);
        DisplayMode d[] = Display.getAvailableDisplayModes();
        for (int i = 0; i < d.length; i++) {
            if (d[i].getWidth() == 640 && d[i].getHeight() == 480 && d[i].getBitsPerPixel() == 32) {
                displayMode = d[i];
                break;
            }
        }
        Display.setDisplayMode(displayMode);
        Display.setTitle("VoxelGale - Made by jacklin213 using LWJGL");
        Display.create();
    }

    private void initGL() {
        GL11.glEnable(GL11.GL_TEXTURE_2D);
        GL11.glShadeModel(GL11.GL_SMOOTH);
        GL11.glClearColor(0, 0, 0, 0);
        GL11.glClearDepth(1);
        GL11.glEnable(GL11.GL_DEPTH_TEST);
        GL11.glDepthFunc(GL11.GL_LEQUAL);

        GL11.glMatrixMode(GL11.GL_PROJECTION);
        GL11.glLoadIdentity();

        GLU.gluPerspective(45, (float) displayMode.getWidth() / (float) displayMode.getHeight(), 0.1f, 100);
        GL11.glMatrixMode(GL11.GL_MODELVIEW);
        GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST);
    }

    private void render() {
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
        GL11.glLoadIdentity();

        GL11.glTranslatef(-3f, 0.0f, -20f);
        GL11.glRotatef(45f, 0.4f, 1.0f, 0.1f);
        GL11.glColor3f(0.5f, 0.5f, 1.0f);

        for (int x = 0; x < 3; x++) {
            for (int y = 0; y < 3; y++) {
                for (int z = 0; z < 3; z++) {
                    renderCube();
                    GL11.glTranslatef(0, 0, 2);
                }
                GL11.glTranslatef(0, 2, -6);
            }
            GL11.glTranslatef(2, -6, 0);
        }
    }

    private void renderCube() {
        // Cube GL11.glBegin(GL11.GL_QUADS);
        GL11.glBegin(GL11.GL_LINE_LOOP);
        //Bellow code renders the quad
        //Render start
        GL11.glColor3f(1.0f, 1.0f, 0.0f);
        GL11.glVertex3f(1.0f, 1.0f, -1.0f);
        GL11.glVertex3f(-1.0f, 1.0f, -1.0f);
        GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
        GL11.glVertex3f(1.0f, 1.0f, 1.0f);

        GL11.glColor3f(1.0f, 0.5f, 0.0f);
        GL11.glVertex3f(1.0f, -1.0f, 1.0f);
        GL11.glVertex3f(-1.0f, -1.0f, 1.0f);
        GL11.glVertex3f(-1.0f, -1.0f, -1.0f);
        GL11.glVertex3f(1.0f, -1.0f, -1.0f);

        GL11.glColor3f(1.0f, 0.0f, 0.0f);
        GL11.glVertex3f(1.0f, 1.0f, 1.0f);
        GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
        GL11.glVertex3f(-1.0f, -1.0f, 1.0f);
        GL11.glVertex3f(1.0f, -1.0f, 1.0f);

        GL11.glColor3f(1.0f, 1.0f, 0.0f);
        GL11.glVertex3f(1.0f, -1.0f, -1.0f);
        GL11.glVertex3f(-1.0f, -1.0f, -1.0f);
        GL11.glVertex3f(-1.0f, 1.0f, -1.0f);
        GL11.glVertex3f(1.0f, 1.0f, -1.0f);

        GL11.glColor3f(0.0f, 0.0f, 1.0f);
        GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
        GL11.glVertex3f(-1.0f, 1.0f, -1.0f);
        GL11.glVertex3f(-1.0f, -1.0f, -1.0f);
        GL11.glVertex3f(-1.0f, -1.0f, 1.0f);

        GL11.glColor3f(1.0f, 0.0f, 1.0f);
        GL11.glVertex3f(1.0f, 1.0f, -1.0f);
        GL11.glVertex3f(1.0f, 1.0f, 1.0f);
        GL11.glVertex3f(1.0f, -1.0f, 1.0f);
        GL11.glVertex3f(1.0f, -1.0f, -1.0f);
        //Render end
        GL11.glEnd();
    }

    private void run() {
        while (!Display.isCloseRequested()) {
            render();
            Display.update();
            Display.sync(60);
        }
        Display.destroy();
    }

}