在freeglut_geometry.c中定义了几种常见图形的绘制，包括立方体， 球面， 圆锥体， 圆柱体， 圆环面， 十二面体， 八面体， 四面体， 二十面体， 菱形十二面体(斜十二面体)等几种立体几何对象的绘制。 移植后的Android Java代码如下所示：

/*** fyjengine All Rights Reserved** @author Yajun Fu  * 2011-11-4** porting functions from freeglut*/
package fyj.engine.utils;import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;import javax.microedition.khronos.opengles.GL10;public class FreeGLUT {/** 立方体(线框)*/public static void glutWireCube(GL10 gl, float dSize) {float size = dSize * 0.5f;ByteBuffer bb = ByteBuffer.allocateDirect(24 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertexBuffer = bb.asFloatBuffer();vertexBuffer.position(0);bb = ByteBuffer.allocateDirect(24 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normalBuffer = bb.asFloatBuffer();normalBuffer.position(0);vertexBuffer.put(new float[] { +size, -size, +size, +size, -size,-size, +size, +size, -size, +size, +size, +size,+size, +size, +size, +size, +size, -size, -size, +size, -size,-size, +size, +size,+size, +size, +size, -size, +size, +size, -size, -size, +size,+size, -size, +size,-size, -size, +size, -size, +size, +size, -size, +size, -size,-size, -size, -size,-size, -size, +size, -size, -size, -size, +size, -size, -size,+size, -size, +size,-size, -size, -size, -size, +size, -size, +size, +size, -size,+size, -size, -size });normalBuffer.put(new float[] { 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,1.0f, 0.0f,0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f,0.0f, 1.0f,-1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f,0.0f, 0.0f,0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f,-1.0f, 0.0f,0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f,0.0f, -1.0f,});vertexBuffer.position(0);normalBuffer.position(0);gl.glColor4f(1, 0, 0, 1);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normalBuffer);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer);for (int i = 0; i < 6; i++)gl.glDrawArrays(GL10.GL_LINE_LOOP, 4 * i, 4);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);}/** 立方体*/public static void glutSolidCube(GL10 gl, float dSize) {float size = dSize * 0.5f;ByteBuffer bb = ByteBuffer.allocateDirect(24 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertexBuffer = bb.asFloatBuffer();vertexBuffer.position(0);bb = ByteBuffer.allocateDirect(24 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normalBuffer = bb.asFloatBuffer();normalBuffer.position(0);vertexBuffer.put(new float[] { +size, -size, +size, +size, -size,-size, +size, +size, -size, +size, +size, +size,+size, +size, +size, +size, +size, -size, -size, +size, -size,-size, +size, +size,+size, +size, +size, -size, +size, +size, -size, -size, +size,+size, -size, +size,-size, -size, +size, -size, +size, +size, -size, +size, -size,-size, -size, -size,-size, -size, +size, -size, -size, -size, +size, -size, -size,+size, -size, +size,-size, -size, -size, -size, +size, -size, +size, +size, -size,+size, -size, -size });normalBuffer.put(new float[] { 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,1.0f, 0.0f,0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f,0.0f, 1.0f,-1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f,0.0f, 0.0f,0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f,-1.0f, 0.0f,0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f,0.0f, -1.0f, });vertexBuffer.position(0);normalBuffer.position(0);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normalBuffer);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer);for (int i = 0; i < 6; i++)gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, 4 * i, 4);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);bb.clear();vertexBuffer.clear();normalBuffer.clear();}private static void fghCircleTable(float sint[], float cost[], int n) {int i;/* Table size, the sign of n flips the circle direction */int size = Math.abs(n);/* Determine the angle between samples */float angle = (float) (2 * Math.PI / (float) ((n == 0) ? 1 : n));/* Compute cos and sin around the circle */sint[0] = 0.0f;cost[0] = 1.0f;for (i = 1; i < size; i++) {sint[i] = (float) Math.sin(angle * i);cost[i] = (float) Math.cos(angle * i);}/* Last sample is duplicate of the first */sint[size] = sint[0];cost[size] = cost[0];}/** 球面(线框)*/public static void glutWireSphere(GL10 gl, float radius, int slices,int stacks) {int i, j;/* Adjust z and radius as stacks and slices are drawn. */float r;float x, y, z;/* Pre-computed circle */float sint1[] = new float[slices + 1], cost1[] = new float[slices + 1];float sint2[] = new float[stacks * 2 + 1], cost2[] = new float[stacks * 2 + 1];fghCircleTable(sint1, cost1, -slices);fghCircleTable(sint2, cost2, stacks * 2);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);ByteBuffer bb = ByteBuffer.allocateDirect((slices + 1) * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normals = bb.asFloatBuffer();normals.position(0);FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);/* Draw a line loop for each stack */for (i = 1; i < stacks; i++) {z = cost2[i];r = sint2[i];for (j = 0; j <= slices; j++) {x = cost1[j];y = sint1[j];normals.put(new float[] { x, y, z });vertex.put(new float[] { x * r * radius, y * r * radius,z * radius });}normals.position(0);vertex.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normals);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_LINE_LOOP, 0, slices + 1);}/* Draw a line loop for each slice */bb = ByteBuffer.allocateDirect((stacks + 1) * 3 * 4);bb.order(ByteOrder.nativeOrder());vertex = bb.asFloatBuffer();vertex.position(0);normals = bb.asFloatBuffer();normals.position(0);for (i = 0; i < slices; i++) {for (j = 0; j <= stacks; j++) {x = cost1[i] * sint2[j];y = sint1[i] * sint2[j];z = cost2[j];normals.put(new float[] { x, y, z });vertex.put(new float[] { x * radius, y * radius, z * radius });}normals.position(0);vertex.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normals);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_LINE_STRIP, 0, stacks + 1);}gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}/** 球面*/public static void glutSolidSphere(GL10 gl, float radius, int slices,int stacks) {int i, j;/* Adjust z and radius as stacks are drawn. */float z0, z1;float r0, r1;/* Pre-computed circle */float sint1[] = new float[slices + 1], cost1[] = new float[slices + 1];float sint2[] = new float[stacks * 2 + 1], cost2[] = new float[stacks * 2 + 1];fghCircleTable(sint1, cost1, -slices);fghCircleTable(sint2, cost2, stacks * 2);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);/* The top stack is covered with a triangle fan */z0 = 1.0f;z1 = cost2[(stacks > 0) ? 1 : 0];r0 = 0.0f;r1 = sint2[(stacks > 0) ? 1 : 0];ByteBuffer bb = ByteBuffer.allocateDirect((slices + 2) * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normals = bb.asFloatBuffer();normals.position(0);FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);normals.put(new float[] { 0, 0, 1 });vertex.put(new float[] { 0, 0, radius });for (j = slices; j >= 0; j--) {normals.put(new float[] { cost1[j] * r1, sint1[j] * r1, z1 });vertex.put(new float[] { cost1[j] * r1 * radius,sint1[j] * r1 * radius, z1 * radius });}vertex.position(0);normals.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normals);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, 0, slices + 2);bb = ByteBuffer.allocateDirect((slices + 1) * 3 * 2 * 4);bb.order(ByteOrder.nativeOrder());normals = bb.asFloatBuffer();vertex = bb.asFloatBuffer();/* Cover each stack with a quad strip, except the top and bottom stacks */for (i = 1; i < stacks - 1; i++) {z0 = z1;z1 = cost2[i + 1];r0 = r1;r1 = sint2[i + 1];normals.position(0);vertex.position(0);for (j = 0; j <= slices; j++) {normals.put(new float[] { cost1[j] * r1, sint1[j] * r1, z1 });vertex.put(new float[] { cost1[j] * r1 * radius,sint1[j] * r1 * radius, z1 * radius });normals.put(new float[] { cost1[j] * r0, sint1[j] * r0, z0 });vertex.put(new float[] { cost1[j] * r0 * radius,sint1[j] * r0 * radius, z0 * radius });}vertex.position(0);normals.position(0);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glNormalPointer(GL10.GL_FLOAT, 0, normals);gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, (slices + 1) * 2);}/* The bottom stack is covered with a triangle fan */z0 = z1;r0 = r1;bb = ByteBuffer.allocateDirect((slices + 2) * 3 * 4);bb.order(ByteOrder.nativeOrder());normals = bb.asFloatBuffer();normals.position(0);vertex = bb.asFloatBuffer();vertex.position(0);normals.put(new float[] { 0, 0, -1 });vertex.put(new float[] { 0, 0, -radius });for (j = 0; j <= slices; j++) {normals.put(new float[] { cost1[j] * r0, sint1[j] * r0, z0 });vertex.put(new float[] { cost1[j] * r0 * radius,sint1[j] * r0 * radius, z0 * radius });}vertex.position(0);normals.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normals);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, 0, slices + 2);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}/** 圆锥体(线框)*/public static void glutWireCone(GL10 gl, float base, float height,int slices, int stacks) {int i, j;/* Step in z and radius as stacks are drawn. */float z = 0.0f;float r = base;float zStep = height / ((stacks > 0) ? stacks : 1);float rStep = base / ((stacks > 0) ? stacks : 1);/* Scaling factors for vertex normals */float cosn = (height / (float) Math.sqrt(height * height + base * base));float sinn = (base / (float) Math.sqrt(height * height + base * base));/* Pre-computed circle */float sint[] = new float[slices + 1], cost[] = new float[slices + 1];fghCircleTable(sint, cost, -slices);/* Draw the stacks... */ByteBuffer bb = ByteBuffer.allocateDirect(slices * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);FloatBuffer normal = bb.asFloatBuffer();normal.position(0);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);for (i = 0; i < stacks; i++) {for (j = 0; j < slices; j++) {normal.put(new float[] { cost[j] * sinn, sint[j] * sinn, cosn });vertex.put(new float[] { cost[j] * r, sint[j] * r, z });}normal.position(0);vertex.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_LINE_LOOP, 0, slices);z += zStep;r -= rStep;}/* Draw the slices */r = base;bb = ByteBuffer.allocateDirect(slices * 2 * 3 * 4);bb.order(ByteOrder.nativeOrder());vertex = bb.asFloatBuffer();vertex.position(0);normal.position(0);for (j = 0; j < slices; j++) {normal.put(new float[] { cost[j] * sinn, sint[j] * sinn, cosn });vertex.put(new float[] { cost[j] * r, sint[j] * r, 0.0f, 0.0f,0.0f, height });}vertex.position(0);normal.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_LINES, 0, slices);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);}/** 圆锥体*/public static void glutSolidCone(GL10 gl, float base, float height,int slices, int stacks) {int i, j;/* Step in z and radius as stacks are drawn. */float z0, z1;float r0, r1;float zStep = height / ((stacks > 0) ? stacks : 1);float rStep = base / ((stacks > 0) ? stacks : 1);/* Scaling factors for vertex normals */float cosn = (height / (float) Math.sqrt(height * height + base * base));float sinn = (base / (float) Math.sqrt(height * height + base * base));/* Pre-computed circle */float sint[] = new float[slices + 2], cost[] = new float[slices + 2];fghCircleTable(sint, cost, -slices);/* Cover the circular base with a triangle fan... */z0 = 0.0f;z1 = zStep;r0 = base;r1 = r0 - rStep;ByteBuffer bb = ByteBuffer.allocateDirect((slices + 2) * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);bb = ByteBuffer.allocateDirect(3 * 4);FloatBuffer normal = bb.asFloatBuffer();normal.position(0);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);normal.put(new float[] { 0.0f, 0.0f, -1.0f });vertex.put(new float[] { 0.0f, 0.0f, z0 });for (j = 0; j <= slices; j++)vertex.put(new float[] { cost[j] * r0, sint[j] * r0, z0 });normal.position(0);vertex.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, 0, slices + 2);/* Cover each stack with a quad strip, except the top stack */bb = ByteBuffer.allocateDirect((slices + 1) * 2 * 3 * 4);bb.order(ByteOrder.nativeOrder());vertex = bb.asFloatBuffer();vertex.position(0);bb = ByteBuffer.allocateDirect((slices + 1) * 3 * 4);normal = bb.asFloatBuffer();normal.position(0);for (i = 0; i < stacks - 1; i++) {for (j = 0; j <= slices; j++) {normal.put(new float[] { cost[j] * sinn, sint[j] * sinn, cosn });vertex.put(new float[] { cost[j] * r0, sint[j] * r0, z0,cost[j] * r1, sint[j] * r1, z1 });}vertex.position(0);normal.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, (slices + 1) * 2);z0 = z1;z1 += zStep;r0 = r1;r1 -= rStep;}/* The top stack is covered with individual triangles */bb = ByteBuffer.allocateDirect(slices * 3 * 3 * 4);bb.order(ByteOrder.nativeOrder());vertex = bb.asFloatBuffer();vertex.position(0);bb = ByteBuffer.allocateDirect((slices + 1) * 3 * 4);normal = bb.asFloatBuffer();normal.position(0);normal.put(new float[] { cost[0] * sinn, sint[0] * sinn, cosn });for (j = 0; j < slices; j++) {vertex.put(new float[] { cost[j + 0] * r0, sint[j + 0] * r0, z0, 0,0, height, cost[j + 1] * r0, sint[j + 1] * r0, z0 });normal.put(new float[] { cost[j + 1] * sinn, sint[j + 1] * sinn,cosn });}vertex.position(0);normal.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLES, 0, slices * 3);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);}/** 圆柱体(线框)*/public static void glutWireCylinder(GL10 gl, float radius, float height,int slices, int stacks) {int i, j;/* Step in z and radius as stacks are drawn. */float z = 0.0f;float zStep = height / ((stacks > 0) ? stacks : 1);/* Pre-computed circle */float sint[] = new float[slices + 1], cost[] = new float[slices + 1];fghCircleTable(sint, cost, -slices);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);/* Draw the stacks... */ByteBuffer bb = ByteBuffer.allocateDirect(slices * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);FloatBuffer normal = bb.asFloatBuffer();normal.position(0);for (i = 0; i <= stacks; i++) {if (i == stacks)z = height;for (j = 0; j < slices; j++) {normal.put(new float[] { cost[j], sint[j], 0.0f });vertex.put(new float[] { cost[j] * radius, sint[j] * radius, z });}normal.position(0);vertex.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_LINE_LOOP, 0, slices);z += zStep;}/* Draw the slices */bb = ByteBuffer.allocateDirect(slices * 2 * 3 * 4);bb.order(ByteOrder.nativeOrder());vertex = bb.asFloatBuffer();vertex.position(0);bb = ByteBuffer.allocateDirect(slices * 3 * 4);normal = bb.asFloatBuffer();normal.position(0);for (j=0; j<slices; j++){normal.put(new float[] {cost[j],        sint[j],        0.0f});vertex.put(new float[] {cost[j]*radius, sint[j]*radius, 0.0f,cost[j]*radius, sint[j]*radius, height});}normal.position(0);vertex.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_LINES, 0, slices);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);}/** 圆柱体*/public static void glutSolidCylinder(GL10 gl, float radius, float height,int slices, int stacks) {int i, j;/* Step in z and radius as stacks are drawn. */float z0, z1;float zStep = height / ((stacks > 0) ? stacks : 1);/* Pre-computed circle */float sint[] = new float[slices + 2], cost[] = new float[slices + 2];fghCircleTable(sint, cost, -slices);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);/* Cover the base and top */ByteBuffer bb = ByteBuffer.allocateDirect((slices+2) * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);bb = ByteBuffer.allocateDirect(3 * 4);FloatBuffer normal = bb.asFloatBuffer();normal.position(0);normal.put(new float[] {0.0f, 0.0f, -1.0f});vertex.put(new float[] {0.0f, 0.0f,  0.0f});for (j=0; j<=slices; j++)vertex.put(new float[] {cost[j]*radius, sint[j]*radius, 0.0f});vertex.position(0);normal.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, 0, slices+2);vertex.position(0);normal.position(0);normal.put(new float[] {0.0f, 0.0f, 1.0f});vertex.put(new float[] {0.0f, 0.0f,  height});for (j=slices; j>=0; j--)vertex.put(new float[] {cost[j]*radius, sint[j]*radius, height});vertex.position(0);normal.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, 0, slices+2);/* Do the stacks */z0 = 0.0f;z1 = zStep;bb = ByteBuffer.allocateDirect((slices+1) * 2 * 3 * 4);bb.order(ByteOrder.nativeOrder());vertex = bb.asFloatBuffer();vertex.position(0);bb = ByteBuffer.allocateDirect((slices+1) * 3 * 4);normal = bb.asFloatBuffer();normal.position(0);for (i=1; i<=stacks; i++){if (i==stacks)z1 = height;for (j=0; j<=slices; j++ ){normal.put(new float[] {cost[j],        sint[j],        0.0f});vertex.put(new float[] {cost[j]*radius, sint[j]*radius, z0,cost[j]*radius, sint[j]*radius, z1});}normal.position(0);vertex.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, (slices+1) * 2);z0 = z1; z1 += zStep;}gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);}/** 圆环面(线框)*/public static void glutWireTorus(GL10 gl, float dInnerRadius,float dOuterRadius, int nSides, int nRings) {float iradius = dInnerRadius, oradius = dOuterRadius, phi, psi, dpsi, dphi;FloatBuffer vertex, normal;int i, j;float spsi, cpsi, sphi, cphi;if (nSides < 1)nSides = 1;if (nRings < 1)nRings = 1;/** Increment the number of sides and rings to allow for one more point* than surface*/nSides++;nRings++;float vertexArray[] = new float[3 * nSides * nRings];float normalArray[] = new float[3 * nSides * nRings];gl.glPushMatrix();gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);dpsi = 2.0f * (float) Math.PI / (float) (nRings - 1);dphi = -2.0f * (float) Math.PI / (float) (nSides - 1);psi = 0.0f;for (j = 0; j < nRings; j++) {cpsi = (float) Math.cos(psi);spsi = (float) Math.sin(psi);phi = 0.0f;for (i = 0; i < nSides; i++) {int offset = 3 * (j * nSides + i);cphi = (float) Math.cos(phi);sphi = (float) Math.sin(phi);vertexArray[offset + 0] = cpsi * (oradius + cphi * iradius);vertexArray[offset + 1] = spsi * (oradius + cphi * iradius);vertexArray[offset + 2] = sphi * iradius;normalArray[offset + 0] = cpsi * cphi;normalArray[offset + 1] = spsi * cphi;normalArray[offset + 2] = sphi;phi += dphi;}psi += dpsi;}ByteBuffer bb = ByteBuffer.allocateDirect((nSides - 1) * (nRings - 1)* 4 * 3 * 4);bb.order(ByteOrder.nativeOrder());vertex = bb.asFloatBuffer();vertex.position(0);normal = bb.asFloatBuffer();normal.position(0);for (i = 0; i < nSides - 1; i++) {for (j = 0; j < nRings - 1; j++) {int offset = 3 * (j * nSides + i);normal.put(new float[] { normalArray[offset],normalArray[offset + 1], normalArray[offset + 2],normalArray[offset + 3], normalArray[offset + 4],normalArray[offset + 5],normalArray[offset + 3 * nSides + 3],normalArray[offset + 3 * nSides + 4],normalArray[offset + 3 * nSides + 5],normalArray[offset + 3 * nSides],normalArray[offset + 3 * nSides + 1],normalArray[offset + 3 * nSides + 2] });vertex.put(new float[] { vertexArray[offset],vertexArray[offset + 1], vertexArray[offset + 2],vertexArray[offset + 3], vertexArray[offset + 4],vertexArray[offset + 5],vertexArray[offset + 3 * nSides + 3],vertexArray[offset + 3 * nSides + 4],vertexArray[offset + 3 * nSides + 5],vertexArray[offset + 3 * nSides],vertexArray[offset + 3 * nSides + 1],vertexArray[offset + 3 * nSides + 2] });}}vertex.position(0);normal.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_LINE_LOOP, 0, (nSides - 1) * (nRings - 1) * 4);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);gl.glPopMatrix();}/** 圆环面*/public static void glutSolidTorus(GL10 gl, float dInnerRadius,float dOuterRadius, int nSides, int nRings) {float iradius = dInnerRadius, oradius = dOuterRadius, phi, psi, dpsi, dphi;FloatBuffer vertex, normal;int i, j;float spsi, cpsi, sphi, cphi;if (nSides < 1)nSides = 1;if (nRings < 1)nRings = 1;/** Increment the number of sides and rings to allow for one more point* than surface*/nSides++;nRings++;float vertexArray[] = new float[3 * nSides * nRings];float normalArray[] = new float[3 * nSides * nRings];gl.glPushMatrix();gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);dpsi = 2.0f * (float) Math.PI / (float) (nRings - 1);dphi = -2.0f * (float) Math.PI / (float) (nSides - 1);psi = 0.0f;for (j = 0; j < nRings; j++) {cpsi = (float) Math.cos(psi);spsi = (float) Math.sin(psi);phi = 0.0f;for (i = 0; i < nSides; i++) {int offset = 3 * (j * nSides + i);cphi = (float) Math.cos(phi);sphi = (float) Math.sin(phi);vertexArray[offset + 0] = cpsi * (oradius + cphi * iradius);vertexArray[offset + 1] = spsi * (oradius + cphi * iradius);vertexArray[offset + 2] = sphi * iradius;normalArray[offset + 0] = cpsi * cphi;normalArray[offset + 1] = spsi * cphi;normalArray[offset + 2] = sphi;phi += dphi;}psi += dpsi;}ByteBuffer bb = ByteBuffer.allocateDirect((nSides - 1) * (nRings - 1)* 4 * 3 * 4);bb.order(ByteOrder.nativeOrder());vertex = bb.asFloatBuffer();vertex.position(0);normal = bb.asFloatBuffer();normal.position(0);for (i = 0; i < nSides - 1; i++) {for (j = 0; j < nRings - 1; j++) {int offset = 3 * (j * nSides + i);normal.put(new float[] { normalArray[offset + 3 * nSides],normalArray[offset + 3 * nSides + 1],normalArray[offset + 3 * nSides + 2],normalArray[offset], vertexArray[offset + 1],normalArray[offset + 2],normalArray[offset + 3 * nSides + 3],normalArray[offset + 3 * nSides + 4],normalArray[offset + 3 * nSides + 5],normalArray[offset + 3], vertexArray[offset + 4],normalArray[offset + 5] });vertex.put(new float[] { vertexArray[offset + 3 * nSides],vertexArray[offset + 3 * nSides + 1],vertexArray[offset + 3 * nSides + 2],vertexArray[offset], vertexArray[offset + 1],vertexArray[offset + 2],vertexArray[offset + 3 * nSides + 3],vertexArray[offset + 3 * nSides + 4],vertexArray[offset + 3 * nSides + 5],vertexArray[offset + 3], vertexArray[offset + 4],vertexArray[offset + 5] });}}vertex.position(0);normal.position(0);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, (nSides - 1) * (nRings - 1)* 4);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);gl.glPopMatrix();}/** 十二面体(线框)*/public static void glutWireDodecahedron(GL10 gl) {/** Magic Numbers: It is possible to create a dodecahedron by attaching* two pentagons to each face of of a cube. The coordinates of the* points are: (+-x,0, z); (+-1, 1, 1); (0, z, x ) where x = (-1 +* sqrt(5))/2, z = (1 + sqrt(5))/2 or x = 0.61803398875 and z =* 1.61803398875.*/ByteBuffer bb = ByteBuffer.allocateDirect(12 * 5 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);vertex.put(new float[] { 0.0f, 1.61803398875f, 0.61803398875f, -1.0f,1.0f, 1.0f, -0.61803398875f, 0.0f, 1.61803398875f,0.61803398875f, 0.0f, 1.61803398875f, 1.0f, 1.0f, 1.0f,0.0f, 1.61803398875f, -0.61803398875f, 1.0f, 1.0f, -1.0f,0.61803398875f, 0.0f, -1.61803398875f, -0.61803398875f, 0.0f,-1.61803398875f, -1.0f, 1.0f, -1.0f,0.0f, -1.61803398875f, 0.61803398875f, 1.0f, -1.0f, 1.0f,0.61803398875f, 0.0f, 1.61803398875f, -0.61803398875f, 0.0f,1.61803398875f, -1.0f, -1.0f, 1.0f,0.0f, -1.61803398875f, -0.61803398875f, -1.0f, -1.0f, -1.0f,-0.61803398875f, 0.0f, -1.61803398875f, 0.61803398875f, 0.0f,-1.61803398875f, 1.0f, -1.0f, -1.0f,0.61803398875f, 0.0f, 1.61803398875f, 1.0f, -1.0f, 1.0f,1.61803398875f, -0.61803398875f, 0.0f, 1.61803398875f,0.61803398875f, 0.0f, 1.0f, 1.0f, 1.0f,-0.61803398875f, 0.0f, 1.61803398875f, -1.0f, 1.0f, 1.0f,-1.61803398875f, 0.61803398875f, 0.0f, -1.61803398875f,-0.61803398875f, 0.0f, -1.0f, -1.0f, 1.0f,0.61803398875f, 0.0f, -1.61803398875f, 1.0f, 1.0f, -1.0f,1.61803398875f, 0.61803398875f, 0.0f, 1.61803398875f,-0.61803398875f, 0.0f, 1.0f, -1.0f, -1.0f,-0.61803398875f, 0.0f, -1.61803398875f, -1.0f, -1.0f, -1.0f,-1.61803398875f, -0.61803398875f, 0.0f, -1.61803398875f,0.61803398875f, 0.0f, -1.0f, 1.0f, -1.0f,1.61803398875f, 0.61803398875f, 0.0f, 1.0f, 1.0f, -1.0f, 0.0f,1.61803398875f, -0.61803398875f, 0.0f, 1.61803398875f,0.61803398875f, 1.0f, 1.0f, 1.0f,1.61803398875f, -0.61803398875f, 0.0f, 1.0f, -1.0f, 1.0f, 0.0f,-1.61803398875f, 0.61803398875f, 0.0f, -1.61803398875f,-0.61803398875f, 1.0f, -1.0f, -1.0f,-1.61803398875f, 0.61803398875f, 0.0f, -1.0f, 1.0f, 1.0f, 0.0f,1.61803398875f, 0.61803398875f, 0.0f, 1.61803398875f,-0.61803398875f, -1.0f, 1.0f, -1.0f,-1.61803398875f, -0.61803398875f, 0.0f, -1.0f, -1.0f, -1.0f,0.0f, -1.61803398875f, -0.61803398875f, 0.0f, -1.61803398875f,0.61803398875f, -1.0f, -1.0f, 1.0f});vertex.position(0);bb = ByteBuffer.allocateDirect(12 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normal = bb.asFloatBuffer();normal.position(0);normal.put(new float[] { 0.0f, 0.525731112119f, 0.850650808354f, 0.0f,0.525731112119f, -0.850650808354f, 0.0f, -0.525731112119f,0.850650808354f, 0.0f, -0.525731112119f, -0.850650808354f,0.850650808354f, 0.0f, 0.525731112119f, -0.850650808354f, 0.0f,0.525731112119f, 0.850650808354f, 0.0f, -0.525731112119f,-0.850650808354f, 0.0f, -0.525731112119f, 0.525731112119f,0.850650808354f, 0.0f, 0.525731112119f, -0.850650808354f, 0.0f,-0.525731112119f, 0.850650808354f, 0.0f, -0.525731112119f,-0.850650808354f, 0.0f });normal.position(0);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);for (int i = 0; i < 12; i++)gl.glDrawArrays(GL10.GL_LINE_LOOP, 5 * i, 5);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}/** 十二面体*/public static void glutSolidDodecahedron(GL10 gl) {/** Magic Numbers: It is possible to create a dodecahedron by attaching* two pentagons to each face of of a cube. The coordinates of the* points are: (+-x,0, z); (+-1, 1, 1); (0, z, x ) where x = (-1 +* sqrt(5))/2, z = (1 + sqrt(5))/2 or x = 0.61803398875 and z =* 1.61803398875.*/ByteBuffer bb = ByteBuffer.allocateDirect(12 * 5 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);vertex.put(new float[] { 0.0f, 1.61803398875f, 0.61803398875f, -1.0f,1.0f, 1.0f, -0.61803398875f, 0.0f, 1.61803398875f,0.61803398875f, 0.0f, 1.61803398875f, 1.0f, 1.0f, 1.0f,0.0f, 1.61803398875f, -0.61803398875f, 1.0f, 1.0f, -1.0f,0.61803398875f, 0.0f, -1.61803398875f, -0.61803398875f, 0.0f,-1.61803398875f, -1.0f, 1.0f, -1.0f,0.0f, -1.61803398875f, 0.61803398875f, 1.0f, -1.0f, 1.0f,0.61803398875f, 0.0f, 1.61803398875f, -0.61803398875f, 0.0f,1.61803398875f, -1.0f, -1.0f, 1.0f,0.0f, -1.61803398875f, -0.61803398875f, -1.0f, -1.0f, -1.0f,-0.61803398875f, 0.0f, -1.61803398875f, 0.61803398875f, 0.0f,-1.61803398875f, 1.0f, -1.0f, -1.0f,0.61803398875f, 0.0f, 1.61803398875f, 1.0f, -1.0f, 1.0f,1.61803398875f, -0.61803398875f, 0.0f, 1.61803398875f,0.61803398875f, 0.0f, 1.0f, 1.0f, 1.0f,-0.61803398875f, 0.0f, 1.61803398875f, -1.0f, 1.0f, 1.0f,-1.61803398875f, 0.61803398875f, 0.0f, -1.61803398875f,-0.61803398875f, 0.0f, -1.0f, -1.0f, 1.0f,0.61803398875f, 0.0f, -1.61803398875f, 1.0f, 1.0f, -1.0f,1.61803398875f, 0.61803398875f, 0.0f, 1.61803398875f,-0.61803398875f, 0.0f, 1.0f, -1.0f, -1.0f,-0.61803398875f, 0.0f, -1.61803398875f, -1.0f, -1.0f, -1.0f,-1.61803398875f, -0.61803398875f, 0.0f, -1.61803398875f,0.61803398875f, 0.0f, -1.0f, 1.0f, -1.0f,1.61803398875f, 0.61803398875f, 0.0f, 1.0f, 1.0f, -1.0f, 0.0f,1.61803398875f, -0.61803398875f, 0.0f, 1.61803398875f,0.61803398875f, 1.0f, 1.0f, 1.0f,1.61803398875f, -0.61803398875f, 0.0f, 1.0f, -1.0f, 1.0f, 0.0f,-1.61803398875f, 0.61803398875f, 0.0f, -1.61803398875f,-0.61803398875f, 1.0f, -1.0f, -1.0f,-1.61803398875f, 0.61803398875f, 0.0f, -1.0f, 1.0f, 1.0f, 0.0f,1.61803398875f, 0.61803398875f, 0.0f, 1.61803398875f,-0.61803398875f, -1.0f, 1.0f, -1.0f,-1.61803398875f, -0.61803398875f, 0.0f, -1.0f, -1.0f, -1.0f,0.0f, -1.61803398875f, -0.61803398875f, 0.0f, -1.61803398875f,0.61803398875f, -1.0f, -1.0f, 1.0f});vertex.position(0);bb = ByteBuffer.allocateDirect(12 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normal = bb.asFloatBuffer();normal.position(0);normal.put(new float[] { 0.0f, 0.525731112119f, 0.850650808354f, 0.0f,0.525731112119f, -0.850650808354f, 0.0f, -0.525731112119f,0.850650808354f, 0.0f, -0.525731112119f, -0.850650808354f,0.850650808354f, 0.0f, 0.525731112119f, -0.850650808354f, 0.0f,0.525731112119f, 0.850650808354f, 0.0f, -0.525731112119f,-0.850650808354f, 0.0f, -0.525731112119f, 0.525731112119f,0.850650808354f, 0.0f, 0.525731112119f, -0.850650808354f, 0.0f,-0.525731112119f, 0.850650808354f, 0.0f, -0.525731112119f,-0.850650808354f, 0.0f });normal.position(0);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);for (int i = 0; i < 12; i++)gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, 5 * i, 5);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}/** 八面体(线框)*/public static void glutWireOctahedron(GL10 gl) {float RADIUS = 1.0f;ByteBuffer bb = ByteBuffer.allocateDirect(8 * 3 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);vertex.put(new float[] { RADIUS, 0.0f, 0.0f, 0.0f, RADIUS, 0.0f, 0.0f,0.0f, RADIUS,RADIUS, 0.0f, 0.0f, 0.0f, 0.0f, -RADIUS, 0.0f, RADIUS, 0.0f,RADIUS, 0.0f, 0.0f, 0.0f, 0.0f, RADIUS, 0.0f, -RADIUS, 0.0f,RADIUS, 0.0f, 0.0f, 0.0f, -RADIUS, 0.0f, 0.0f, 0.0f, -RADIUS,-RADIUS, 0.0f, 0.0f, 0.0f, 0.0f, RADIUS, 0.0f, RADIUS, 0.0f,-RADIUS, 0.0f, 0.0f, 0.0f, RADIUS, 0.0f, 0.0f, 0.0f, -RADIUS,-RADIUS, 0.0f, 0.0f, 0.0f, -RADIUS, 0.0f, 0.0f, 0.0f, RADIUS,-RADIUS, 0.0f, 0.0f, 0.0f, 0.0f, -RADIUS, 0.0f, -RADIUS, 0.0f});vertex.position(0);bb = ByteBuffer.allocateDirect(8 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normal = bb.asFloatBuffer();normal.position(0);normal.put(new float[] { 0.577350269189f, 0.577350269189f,0.577350269189f, 0.577350269189f, 0.577350269189f,-0.577350269189f, 0.577350269189f, -0.577350269189f,0.577350269189f, 0.577350269189f, -0.577350269189f,-0.577350269189f, -0.577350269189f, 0.577350269189f,0.577350269189f, -0.577350269189f, 0.577350269189f,-0.577350269189f, -0.577350269189f, -0.577350269189f,0.577350269189f, -0.577350269189f, -0.577350269189f,-0.577350269189f });normal.position(0);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_LINE_LOOP, 0, 24);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}/** 八面体*/public static void glutSolidOctahedron(GL10 gl) {float RADIUS = 1.0f;ByteBuffer bb = ByteBuffer.allocateDirect(8 * 3 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);vertex.put(new float[] { RADIUS, 0.0f, 0.0f, 0.0f, RADIUS, 0.0f, 0.0f,0.0f, RADIUS,RADIUS, 0.0f, 0.0f, 0.0f, 0.0f, -RADIUS, 0.0f, RADIUS, 0.0f,RADIUS, 0.0f, 0.0f, 0.0f, 0.0f, RADIUS, 0.0f, -RADIUS, 0.0f,RADIUS, 0.0f, 0.0f, 0.0f, -RADIUS, 0.0f, 0.0f, 0.0f, -RADIUS,-RADIUS, 0.0f, 0.0f, 0.0f, 0.0f, RADIUS, 0.0f, RADIUS, 0.0f,-RADIUS, 0.0f, 0.0f, 0.0f, RADIUS, 0.0f, 0.0f, 0.0f, -RADIUS,-RADIUS, 0.0f, 0.0f, 0.0f, -RADIUS, 0.0f, 0.0f, 0.0f, RADIUS,-RADIUS, 0.0f, 0.0f, 0.0f, 0.0f, -RADIUS, 0.0f, -RADIUS, 0.0f});vertex.position(0);bb = ByteBuffer.allocateDirect(8 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normal = bb.asFloatBuffer();normal.position(0);normal.put(new float[] { 0.577350269189f, 0.577350269189f,0.577350269189f, 0.577350269189f, 0.577350269189f,-0.577350269189f, 0.577350269189f, -0.577350269189f,0.577350269189f, 0.577350269189f, -0.577350269189f,-0.577350269189f, -0.577350269189f, 0.577350269189f,0.577350269189f, -0.577350269189f, 0.577350269189f,-0.577350269189f, -0.577350269189f, -0.577350269189f,0.577350269189f, -0.577350269189f, -0.577350269189f,-0.577350269189f });normal.position(0);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLES, 0, 24);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}/** Magic Numbers: r0 = ( 1, 0, 0 ) r1 = ( -1/3, 2 sqrt(2) / 3, 0 ) r2 = (* -1/3, -sqrt(2) / 3, sqrt(6) / 3 ) r3 = ( -1/3, -sqrt(2) / 3, -sqrt(6) / 3* ) |r0| = |r1| = |r2| = |r3| = 1 Distance between any two points is 2* sqrt(6) / 3* * Normals: The unit normals are simply the negative of the coordinates of* the point not on the surface.*/private static final int NUM_TETR_FACES = 4;private static float tet_r[][] = { { 1.0f, 0.0f, 0.0f },{ -0.333333333333f, 0.942809041582f, 0.0f },{ -0.333333333333f, -0.471404520791f, 0.816496580928f },{ -0.333333333333f, -0.471404520791f, -0.816496580928f } };private static int tet_i[][] = /* Vertex indices */{ { 1, 3, 2 }, { 0, 2, 3 }, { 0, 3, 1 }, { 0, 1, 2 } };/** 四面体(线框)*/public static void glutWireTetrahedron(GL10 gl) {ByteBuffer bb = ByteBuffer.allocateDirect(4 * 3 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);vertex.put(tet_r[1]);vertex.put(tet_r[3]);vertex.put(tet_r[2]);vertex.put(tet_r[0]);vertex.put(tet_r[2]);vertex.put(tet_r[3]);vertex.put(tet_r[0]);vertex.put(tet_r[3]);vertex.put(tet_r[1]);vertex.put(tet_r[0]);vertex.put(tet_r[1]);vertex.put(tet_r[2]);vertex.position(0);bb = ByteBuffer.allocateDirect(4 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normal = bb.asFloatBuffer();normal.position(0);normal.put(new float[] { -tet_r[0][0], -tet_r[0][1], -tet_r[0][2],-tet_r[1][0], -tet_r[1][1], -tet_r[1][2], -tet_r[2][0],-tet_r[2][1], -tet_r[2][2], -tet_r[3][0], -tet_r[3][1],-tet_r[3][2] });normal.position(0);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_LINE_LOOP, 0, 12);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}/** 四面体*/public static void glutSolidTetrahedron(GL10 gl) {ByteBuffer bb = ByteBuffer.allocateDirect(4 * 3 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);vertex.put(tet_r[1]);vertex.put(tet_r[3]);vertex.put(tet_r[2]);vertex.put(tet_r[0]);vertex.put(tet_r[2]);vertex.put(tet_r[3]);vertex.put(tet_r[0]);vertex.put(tet_r[3]);vertex.put(tet_r[1]);vertex.put(tet_r[0]);vertex.put(tet_r[1]);vertex.put(tet_r[2]);vertex.position(0);bb = ByteBuffer.allocateDirect(4 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normal = bb.asFloatBuffer();normal.position(0);normal.put(new float[] { -tet_r[0][0], -tet_r[0][1], -tet_r[0][2],-tet_r[1][0], -tet_r[1][1], -tet_r[1][2], -tet_r[2][0],-tet_r[2][1], -tet_r[2][2], -tet_r[3][0], -tet_r[3][1],-tet_r[3][2] });normal.position(0);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);gl.glDrawArrays(GL10.GL_TRIANGLES, 0, 12);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}private static float icos_r[][] = { { 1.0f, 0.0f, 0.0f },{ 0.447213595500f, 0.894427191000f, 0.0f },{ 0.447213595500f, 0.276393202252f, 0.850650808354f },{ 0.447213595500f, -0.723606797748f, 0.525731112119f },{ 0.447213595500f, -0.723606797748f, -0.525731112119f },{ 0.447213595500f, 0.276393202252f, -0.850650808354f },{ -0.447213595500f, -0.894427191000f, 0.0f },{ -0.447213595500f, -0.276393202252f, 0.850650808354f },{ -0.447213595500f, 0.723606797748f, 0.525731112119f },{ -0.447213595500f, 0.723606797748f, -0.525731112119f },{ -0.447213595500f, -0.276393202252f, -0.850650808354f },{ -1.0f, 0.0f, 0.0f } };private static int icos_v[][] = { { 0, 1, 2 }, { 0, 2, 3 }, { 0, 3, 4 },{ 0, 4, 5 }, { 0, 5, 1 }, { 1, 8, 2 }, { 2, 7, 3 }, { 3, 6, 4 },{ 4, 10, 5 }, { 5, 9, 1 }, { 1, 9, 8 }, { 2, 8, 7 }, { 3, 7, 6 },{ 4, 6, 10 }, { 5, 10, 9 }, { 11, 9, 10 }, { 11, 8, 9 },{ 11, 7, 8 }, { 11, 6, 7 }, { 11, 10, 6 } };/** 二十面体(线框)*/public static void glutWireIcosahedron(GL10 gl) {ByteBuffer bb = ByteBuffer.allocateDirect(20 * 3 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);bb = ByteBuffer.allocateDirect(20 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normal = bb.asFloatBuffer();normal.position(0);for (int i = 0; i < 20; i++) {normal.put((icos_r[icos_v[i][1]][1] - icos_r[icos_v[i][0]][1])* (icos_r[icos_v[i][2]][2] - icos_r[icos_v[i][0]][2])- (icos_r[icos_v[i][1]][2] - icos_r[icos_v[i][0]][2])* (icos_r[icos_v[i][2]][1] - icos_r[icos_v[i][0]][1]));normal.put((icos_r[icos_v[i][1]][2] - icos_r[icos_v[i][0]][2])* (icos_r[icos_v[i][2]][0] - icos_r[icos_v[i][0]][0])- (icos_r[icos_v[i][1]][0] - icos_r[icos_v[i][0]][0])* (icos_r[icos_v[i][2]][2] - icos_r[icos_v[i][0]][2]));normal.put((icos_r[icos_v[i][1]][0] - icos_r[icos_v[i][0]][0])* (icos_r[icos_v[i][2]][1] - icos_r[icos_v[i][0]][1])- (icos_r[icos_v[i][1]][1] - icos_r[icos_v[i][0]][1])* (icos_r[icos_v[i][2]][0] - icos_r[icos_v[i][0]][0]));vertex.put(icos_r[icos_v[i][0]]);vertex.put(icos_r[icos_v[i][1]]);vertex.put(icos_r[icos_v[i][2]]);}vertex.position(0);normal.position(0);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);for (int i = 0; i < 20; i++)gl.glDrawArrays(GL10.GL_LINE_LOOP, 3 * i, 3);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}/** 二十面体*/public static void glutSolidIcosahedron(GL10 gl) {ByteBuffer bb = ByteBuffer.allocateDirect(20 * 3 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);bb = ByteBuffer.allocateDirect(20 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normal = bb.asFloatBuffer();normal.position(0);for (int i = 0; i < 20; i++) {normal.put((icos_r[icos_v[i][1]][1] - icos_r[icos_v[i][0]][1])* (icos_r[icos_v[i][2]][2] - icos_r[icos_v[i][0]][2])- (icos_r[icos_v[i][1]][2] - icos_r[icos_v[i][0]][2])* (icos_r[icos_v[i][2]][1] - icos_r[icos_v[i][0]][1]));normal.put((icos_r[icos_v[i][1]][2] - icos_r[icos_v[i][0]][2])* (icos_r[icos_v[i][2]][0] - icos_r[icos_v[i][0]][0])- (icos_r[icos_v[i][1]][0] - icos_r[icos_v[i][0]][0])* (icos_r[icos_v[i][2]][2] - icos_r[icos_v[i][0]][2]));normal.put((icos_r[icos_v[i][1]][0] - icos_r[icos_v[i][0]][0])* (icos_r[icos_v[i][2]][1] - icos_r[icos_v[i][0]][1])- (icos_r[icos_v[i][1]][1] - icos_r[icos_v[i][0]][1])* (icos_r[icos_v[i][2]][0] - icos_r[icos_v[i][0]][0]));vertex.put(icos_r[icos_v[i][0]]);vertex.put(icos_r[icos_v[i][1]]);vertex.put(icos_r[icos_v[i][2]]);}vertex.position(0);normal.position(0);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);for (int i = 0; i < 20; i++)gl.glDrawArrays(GL10.GL_TRIANGLES, 3 * i, 3);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}private static float rdod_r[][] = { { 0.0f, 0.0f, 1.0f },{ 0.707106781187f, 0.000000000000f, 0.5f },{ 0.000000000000f, 0.707106781187f, 0.5f },{ -0.707106781187f, 0.000000000000f, 0.5f },{ 0.000000000000f, -0.707106781187f, 0.5f },{ 0.707106781187f, 0.707106781187f, 0.0f },{ -0.707106781187f, 0.707106781187f, 0.0f },{ -0.707106781187f, -0.707106781187f, 0.0f },{ 0.707106781187f, -0.707106781187f, 0.0f },{ 0.707106781187f, 0.000000000000f, -0.5f },{ 0.000000000000f, 0.707106781187f, -0.5f },{ -0.707106781187f, 0.000000000000f, -0.5f },{ 0.000000000000f, -0.707106781187f, -0.5f }, { 0.0f, 0.0f, -1.0f } };private static int rdod_v[][] = { { 0, 1, 5, 2 }, { 0, 2, 6, 3 },{ 0, 3, 7, 4 }, { 0, 4, 8, 1 }, { 5, 10, 6, 2 }, { 6, 11, 7, 3 },{ 7, 12, 8, 4 }, { 8, 9, 5, 1 }, { 5, 9, 13, 10 },{ 6, 10, 13, 11 }, { 7, 11, 13, 12 }, { 8, 12, 13, 9 } };private static float rdod_n[][] = {{ 0.353553390594f, 0.353553390594f, 0.5f },{ -0.353553390594f, 0.353553390594f, 0.5f },{ -0.353553390594f, -0.353553390594f, 0.5f },{ 0.353553390594f, -0.353553390594f, 0.5f },{ 0.000000000000f, 1.000000000000f, 0.0f },{ -1.000000000000f, 0.000000000000f, 0.0f },{ 0.000000000000f, -1.000000000000f, 0.0f },{ 1.000000000000f, 0.000000000000f, 0.0f },{ 0.353553390594f, 0.353553390594f, -0.5f },{ -0.353553390594f, 0.353553390594f, -0.5f },{ -0.353553390594f, -0.353553390594f, -0.5f },{ 0.353553390594f, -0.353553390594f, -0.5f } };/** 菱形十二面体(线框)*/public static void glutWireRhombicDodecahedron(GL10 gl) {ByteBuffer bb = ByteBuffer.allocateDirect(12 * 4 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);bb = ByteBuffer.allocateDirect(12 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normal = bb.asFloatBuffer();normal.position(0);for (int i = 0; i < 12; i++) {normal.put(rdod_n[i]);vertex.put(rdod_r[rdod_v[i][0]]);vertex.put(rdod_r[rdod_v[i][1]]);vertex.put(rdod_r[rdod_v[i][2]]);vertex.put(rdod_r[rdod_v[i][3]]);}vertex.position(0);normal.position(0);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);for (int i = 0; i < 12; i++)gl.glDrawArrays(GL10.GL_LINE_LOOP, 4 * i, 4);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}/** 菱形十二面体*/public static void glutSolidRhombicDodecahedron(GL10 gl) {ByteBuffer bb = ByteBuffer.allocateDirect(12 * 4 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer vertex = bb.asFloatBuffer();vertex.position(0);bb = ByteBuffer.allocateDirect(12 * 3 * 4);bb.order(ByteOrder.nativeOrder());FloatBuffer normal = bb.asFloatBuffer();normal.position(0);for (int i = 0; i < 12; i++) {normal.put(rdod_n[i]);vertex.put(rdod_r[rdod_v[i][0]]);vertex.put(rdod_r[rdod_v[i][1]]);vertex.put(rdod_r[rdod_v[i][2]]);vertex.put(rdod_r[rdod_v[i][3]]);}vertex.position(0);normal.position(0);gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glNormalPointer(GL10.GL_FLOAT, 0, normal);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertex);for (int i = 0; i < 12; i++)gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, 4 * i, 4);gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}}

使用的例子如下：

package fyj.engine.renderers;import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;import android.content.Context;
import android.opengl.GLU;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import fyj.engine.utils.FreeGLUT;public class FreeglutTestRenderer implements CommonRenderer {private float rot = 0;public FreeglutTestRenderer(Context ctx) {}@Overridepublic void draw(GL10 gl) {// TODO Auto-generated method stubgl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);gl.glMatrixMode(GL10.GL_MODELVIEW);gl.glLoadIdentity();gl.glTranslatef(0, 0, -0.2f);gl.glRotatef(rot, 0, 1, 0);rot += 0.5f;
//       Log.i("37", " rot = " + rot);//       Freeglut.glutSolidCube(gl, 1);
//       Freeglut.glutWireSphere(gl, 1, 35, 45);
//       FreeGLUT.glutWireTorus(gl, 0.5f, 1, 35, 30);
//       Freeglut.glutSolidTorus(gl, 0.5f, 1, 20, 60);//         FreeGLUT.glutWireDodecahedron(gl);
//       FreeGLUT.glutSolidDodecahedron(gl);//       FreeGLUT.glutWireOctahedron(gl);
//       FreeGLUT.glutSolidOctahedron(gl);//         FreeGLUT.glutWireTetrahedron(gl);//         FreeGLUT.glutWireIcosahedron(gl);
//       FreeGLUT.glutSolidIcosahedron(gl);//        FreeGLUT.glutWireRhombicDodecahedron(gl);
//       FreeGLUT.glutSolidRhombicDodecahedron(gl);//        FreeGLUT.glutWireCone(gl, 1.0f, 5.0f, 35, 30);
//       FreeGLUT.glutSolidCone(gl, 1.0f, 5.0f, 35, 30);//       FreeGLUT.glutWireCylinder(gl, 1.0f, 5, 35, 30);FreeGLUT.glutSolidCylinder(gl, 1.0f, 5, 36, 30);}@Overridepublic void resize(GL10 gl, int w, int h) {// TODO Auto-generated method stubfloat fAspect;// Prevent a divide by zero, when window is too short// (you cant make a window of zero width).if(h == 0)h = 1;gl.glViewport(0, 0, w, h);fAspect = (float)w / (float)h;// Reset the coordinate system before modifyinggl.glMatrixMode(GL10.GL_PROJECTION);gl.glLoadIdentity();// Set the clipping volumeGLU.gluPerspective(gl, 45.0f, fAspect, 1.0f, 50.0f);GLU.gluLookAt(gl, 0, 0, -5, 0, 0, 0, 0, 1, 0);gl.glMatrixMode(GL10.GL_MODELVIEW);gl.glLoadIdentity();}@Overridepublic void init(GL10 gl, EGLConfig config) {// TODO Auto-generated method stubgl.glClearColor(0.0f, 0.0f, .50f, 1.0f );gl.glEnable(GL10.GL_DEPTH_TEST); // Hidden surface removal//      gl.glFrontFace(GL10.GL_CCW); // Counter clock-wise polygons face out
//
//      gl.glEnable(GL10.GL_CULL_FACE); // Do not calculate inside of jet       }@Overridepublic boolean keyEvent(KeyEvent event) {// TODO Auto-generated method stubreturn false;}@Overridepublic void createMenu(Menu menu) {// TODO Auto-generated method stub}@Overridepublic void onMenuItemSelected(MenuItem item) {// TODO Auto-generated method stub}
}