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Android example source code file (PointCloud.java)

This example Android source code file (PointCloud.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

override, pointcloud, shape

The PointCloud.java Android example source code

/*
 * Copyright (C) 2007 Google Inc.
 *
 * 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.android.globaltime;

import javax.microedition.khronos.opengles.GL10;

/**
 * A class representing a set of GL_POINT objects.  GlobalTime uses this class
 * to draw city lights on the night side of the earth.
 */
public class PointCloud extends Shape {

    /**
     * Constructs a PointCloud with a point at each of the given vertex
     * (x, y, z) positions.
     * @param vertices an array of (x, y, z) positions given in fixed-point.
     */
    public PointCloud(int[] vertices) {
        this(vertices, 0, vertices.length);
    }

    /**
     * Constructs a PointCloud with a point at each of the given vertex
     * (x, y, z) positions.
     * @param vertices an array of (x, y, z) positions given in fixed-point.
     * @param off the starting offset of the vertices array
     * @param len the number of elements of the vertices array to use
     */
    public PointCloud(int[] vertices, int off, int len) {
        super(GL10.GL_POINTS, GL10.GL_UNSIGNED_SHORT,
              false, false, false);

        int numPoints = len / 3;
        short[] indices = new short[numPoints];
        for (int i = 0; i < numPoints; i++) {
            indices[i] = (short)i;
        }
        
        allocateBuffers(vertices, null, null, null, indices);
        this.mNumIndices = mIndexBuffer.capacity();
    }

    @Override public int getNumTriangles() {
        return mNumIndices * 2;
    }
}

Other Android examples (source code examples)

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