cube.java

android 例子中的确良ApiDemos。很有代表意义

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * 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.example.android.apis.graphics.kube;


public class Cube extends GLShape {

	public Cube(GLWorld world, float left, float bottom, float back, float right, float top, float front) {
		super(world);
       	GLVertex leftBottomBack = addVertex(left, bottom, back);
       GLVertex rightBottomBack = addVertex(right, bottom, back);
       	GLVertex leftTopBack = addVertex(left, top, back);
        GLVertex rightTopBack = addVertex(right, top, back);
       	GLVertex leftBottomFront = addVertex(left, bottom, front);
        GLVertex rightBottomFront = addVertex(right, bottom, front);
       	GLVertex leftTopFront = addVertex(left, top, front);
        GLVertex rightTopFront = addVertex(right, top, front);

        // vertices are added in a clockwise orientation (when viewed from the outside)
        // bottom
        addFace(new GLFace(leftBottomBack, leftBottomFront, rightBottomFront, rightBottomBack));
        // front
        addFace(new GLFace(leftBottomFront, leftTopFront, rightTopFront, rightBottomFront));
        // left
        addFace(new GLFace(leftBottomBack, leftTopBack, leftTopFront, leftBottomFront));
        // right
        addFace(new GLFace(rightBottomBack, rightBottomFront, rightTopFront, rightTopBack));
        // back
        addFace(new GLFace(leftBottomBack, rightBottomBack, rightTopBack, leftTopBack));
        // top
        addFace(new GLFace(leftTopBack, rightTopBack, rightTopFront, leftTopFront));
		
	}
	
    public static final int kBottom = 0;
    public static final int kFront = 1;
    public static final int kLeft = 2;
    public static final int kRight = 3;
    public static final int kBack = 4;
    public static final int kTop = 5;

	
}