com.github.begla.blockmania.rendering.Primitives.java Source code

Introduction

Here is the source code for com.github.begla.blockmania.rendering.Primitives.java

Source

/*
 * Copyright 2011 Benjamin Glatzel <benjamin.glatzel@me.com>.
 *
 * 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.github.begla.blockmania.rendering;

import org.lwjgl.opengl.GL11;
import org.lwjgl.util.vector.Vector4f;

/**
 * A collection of some basic primitives.
 *
 * @author Benjamin Glatzel <benjamin.glatzel@me.com>
 */
public class Primitives {

    private static final Vector4f CLOUD_COLOR_1 = new Vector4f(0.96f, 0.96f, 0.96f, 0.70f);
    private static final Vector4f CLOUD_COLOR_2 = new Vector4f(1.0f, 1.0f, 1.0f, 0.70f);

    /**
     * @param scaleX    Scale along the x-axis
     * @param scaleY    Scale along the y-axis
     * @param scaleZ    Scale along the z-axis
     * @param x         Position on the x-axis
     * @param y         Position on the y-axis
     * @param z         Position on the z-axis
     * @param drawLeft
     * @param drawRight
     * @param drawFront
     * @param drawBack
     */
    public static void drawCloud(double scaleX, double scaleY, double scaleZ, double x, double y, double z,
            boolean drawLeft, boolean drawRight, boolean drawFront, boolean drawBack) {

        // Top Face
        GL11.glColor4f(CLOUD_COLOR_2.x, CLOUD_COLOR_2.y, CLOUD_COLOR_2.z, CLOUD_COLOR_2.w);
        GL11.glTexCoord2f(0.0f, 0.5f);
        GL11.glVertex3d(-0.5 * scaleX + x, 0.5 * scaleY + y, -0.5 * scaleZ + z);
        GL11.glTexCoord2f(0.0f, 0.0f);
        GL11.glVertex3d(-0.5 * scaleX + x, 0.5 * scaleY + y, 0.5 * scaleZ + z);
        GL11.glTexCoord2f(0.5f, 0.0f);
        GL11.glVertex3d(0.5 * scaleX + x, 0.5 * scaleY + y, 0.5 * scaleZ + z);
        GL11.glTexCoord2f(0.5f, 0.5f);
        GL11.glVertex3d(0.5 * scaleX + x, 0.5 * scaleY + y, -0.5 * scaleZ + z);

        // Back Face
        if (drawBack) {
            GL11.glColor4f(CLOUD_COLOR_2.x, CLOUD_COLOR_2.y, CLOUD_COLOR_2.z, CLOUD_COLOR_2.w);
            GL11.glTexCoord2f(0.5f, 0.0f);
            GL11.glVertex3d(-0.5 * scaleX + x, -0.5 * scaleY + y, -0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.5f, 0.5f);
            GL11.glVertex3d(-0.5 * scaleX + x, 0.5 * scaleY + y, -0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.0f, 0.5f);
            GL11.glVertex3d(0.5 * scaleX + x, 0.5 * scaleY + y, -0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.0f, 0.0f);
            GL11.glVertex3d(0.5 * scaleX + x, -0.5 * scaleY + y, -0.5 * scaleZ + z);
        }

        // Left Face
        if (drawLeft) {
            GL11.glColor4f(CLOUD_COLOR_2.x, CLOUD_COLOR_2.y, CLOUD_COLOR_2.z, CLOUD_COLOR_2.w);
            GL11.glTexCoord2f(0.0f, 0.0f);
            GL11.glVertex3d(-0.5 * scaleX + x, -0.5 * scaleY + y, -0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.5f, 0.0f);
            GL11.glVertex3d(-0.5 * scaleX + x, -0.5 * scaleY + y, 0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.5f, 0.5f);
            GL11.glVertex3d(-0.5 * scaleX + x, 0.5 * scaleY + y, 0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.0f, 0.5f);
            GL11.glVertex3d(-0.5 * scaleX + x, 0.5 * scaleY + y, -0.5 * scaleZ + z);
        }
        // Right face
        if (drawRight) {
            GL11.glColor4f(CLOUD_COLOR_2.x, CLOUD_COLOR_2.y, CLOUD_COLOR_2.z, CLOUD_COLOR_2.w);
            GL11.glTexCoord2f(0.5f, 0.0f);
            GL11.glVertex3d(0.5 * scaleX + x, -0.5 * scaleY + y, -0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.5f, 0.5f);
            GL11.glVertex3d(0.5 * scaleX + x, 0.5 * scaleY + y, -0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.0f, 0.5f);
            GL11.glVertex3d(0.5 * scaleX + x, 0.5 * scaleY + y, 0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.0f, 0.0f);
            GL11.glVertex3d(0.5 * scaleX + x, -0.5 * scaleY + y, 0.5 * scaleZ + z);
        }

        // Front face
        if (drawFront) {
            GL11.glColor4f(CLOUD_COLOR_2.x, CLOUD_COLOR_2.y, CLOUD_COLOR_2.z, CLOUD_COLOR_2.w);
            GL11.glTexCoord2f(0.5f, 0.0f);
            GL11.glVertex3d(-0.5 * scaleX + x, -0.5 * scaleY + y, 0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.5f, 0.0f);
            GL11.glVertex3d(0.5 * scaleX + x, -0.5 * scaleY + y, 0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.5f, 0.5f);
            GL11.glVertex3d(0.5 * scaleX + x, 0.5 * scaleY + y, 0.5 * scaleZ + z);
            GL11.glTexCoord2f(0.0f, 0.5f);
            GL11.glVertex3d(-0.5 * scaleX + x, 0.5 * scaleY + y, 0.5 * scaleZ + z);
        }

        // Bottom Face
        GL11.glColor4f(CLOUD_COLOR_1.x, CLOUD_COLOR_1.y, CLOUD_COLOR_1.z, CLOUD_COLOR_1.w);
        GL11.glTexCoord2f(0.5f, 0.5f);
        GL11.glVertex3d(-0.5 * scaleX + x, -0.5 * scaleY + y, -0.5 * scaleZ + z);
        GL11.glTexCoord2f(0.0f, 0.5f);
        GL11.glVertex3d(0.5 * scaleX + x, -0.5 * scaleY + y, -0.5 * scaleZ + z);
        GL11.glTexCoord2f(0.0f, 0.0f);
        GL11.glVertex3d(0.5 * scaleX + x, -0.5 * scaleY + y, 0.5 * scaleZ + z);
        GL11.glTexCoord2f(0.5f, 0.0f);
        GL11.glVertex3d(-0.5 * scaleX + x, -0.5 * scaleY + y, 0.5 * scaleZ + z);
    }
}