/Research/Example projects/AndroidGL_0.2/AndroidGL/src/edu/union/GLTutorialEight.java
Java | 216 lines | 166 code | 38 blank | 12 comment | 2 complexity | e8d6eff7f3e45700b81ecfce45de2908 MD5 | raw file
1package edu.union; 2 3import java.nio.ByteBuffer; 4import java.nio.ByteOrder; 5import java.nio.FloatBuffer; 6import java.nio.IntBuffer; 7 8import javax.microedition.khronos.opengles.GL10; 9import javax.microedition.khronos.opengles.GL11; 10 11import android.content.Context; 12import android.graphics.Bitmap; 13import android.graphics.BitmapFactory; 14import android.graphics.Canvas; 15import android.graphics.OpenGLContext; 16import android.opengl.GLU; 17import android.view.View; 18 19public class GLTutorialEight extends View { 20 private OpenGLContext glContext; 21 22 float lightAmbient[] = new float[] { 0.2f, 0.3f, 0.6f, 1.0f }; 23 float lightDiffuse[] = new float[] { 0.2f, 0.3f, 0.6f, 1.0f }; 24 25 float matAmbient[] = new float[] { 0.6f, 0.6f, 0.6f, 1.0f }; 26 float matDiffuse[] = new float[] { 0.6f, 0.6f, 0.6f, 1.0f }; 27 28 int tex; 29 Bitmap bmp; 30 31 float box[] = new float[] { 32 // FRONT 33 -0.5f, -0.5f, 0.5f, 34 0.5f, -0.5f, 0.5f, 35 -0.5f, 0.5f, 0.5f, 36 0.5f, 0.5f, 0.5f, 37 // BACK 38 -0.5f, -0.5f, -0.5f, 39 -0.5f, 0.5f, -0.5f, 40 0.5f, -0.5f, -0.5f, 41 0.5f, 0.5f, -0.5f, 42 // LEFT 43 -0.5f, -0.5f, 0.5f, 44 -0.5f, 0.5f, 0.5f, 45 -0.5f, -0.5f, -0.5f, 46 -0.5f, 0.5f, -0.5f, 47 // RIGHT 48 0.5f, -0.5f, -0.5f, 49 0.5f, 0.5f, -0.5f, 50 0.5f, -0.5f, 0.5f, 51 0.5f, 0.5f, 0.5f, 52 // TOP 53 -0.5f, 0.5f, 0.5f, 54 0.5f, 0.5f, 0.5f, 55 -0.5f, 0.5f, -0.5f, 56 0.5f, 0.5f, -0.5f, 57 // BOTTOM 58 -0.5f, -0.5f, 0.5f, 59 -0.5f, -0.5f, -0.5f, 60 0.5f, -0.5f, 0.5f, 61 0.5f, -0.5f, -0.5f, 62 }; 63 64 float texCoords[] = new float[] { 65 // FRONT 66 0.0f, 0.0f, 67 1.0f, 0.0f, 68 0.0f, 1.0f, 69 1.0f, 1.0f, 70 // BACK 71 1.0f, 0.0f, 72 1.0f, 1.0f, 73 0.0f, 0.0f, 74 0.0f, 1.0f, 75 // LEFT 76 1.0f, 0.0f, 77 1.0f, 1.0f, 78 0.0f, 0.0f, 79 0.0f, 1.0f, 80 // RIGHT 81 1.0f, 0.0f, 82 1.0f, 1.0f, 83 0.0f, 0.0f, 84 0.0f, 1.0f, 85 // TOP 86 0.0f, 0.0f, 87 1.0f, 0.0f, 88 0.0f, 1.0f, 89 1.0f, 1.0f, 90 // BOTTOM 91 1.0f, 0.0f, 92 1.0f, 1.0f, 93 0.0f, 0.0f, 94 0.0f, 1.0f 95 }; 96 97 FloatBuffer cubeBuff; 98 FloatBuffer texBuff; 99 100 protected FloatBuffer makeFloatBuffer(float[] arr) { 101 ByteBuffer bb = ByteBuffer.allocateDirect(arr.length*4); 102 bb.order(ByteOrder.nativeOrder()); 103 FloatBuffer fb = bb.asFloatBuffer(); 104 fb.put(arr); 105 fb.position(0); 106 return fb; 107 } 108 109 float[] pos = new float[] {0,0,3,0}; 110 111 public int loadTexture(GL10 gl, Context c, Bitmap bmp) { 112 ByteBuffer bb = ByteBuffer.allocateDirect(bmp.height()*bmp.width()*4); 113 bb.order(ByteOrder.nativeOrder()); 114 IntBuffer ib = bb.asIntBuffer(); 115 116 for (int y=0;y<bmp.height();y++) 117 for (int x=0;x<bmp.width();x++) { 118 ib.put(bmp.getPixel(x,y)); 119 } 120 ib.position(0); 121 bb.position(0); 122 123 int[] tmp_tex = new int[1]; 124 125 gl.glGenTextures(1, tmp_tex, 0); 126 int tex = tmp_tex[0]; 127 gl.glBindTexture(GL10.GL_TEXTURE_2D, this.tex); 128 gl.glTexImage2D(GL10.GL_TEXTURE_2D, 0, GL10.GL_RGBA, bmp.width(), bmp.height(), 0, GL10.GL_RGBA, GL10.GL_UNSIGNED_BYTE, bb); 129 gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR); 130 gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR); 131 132 return tex; 133 } 134 135 public GLTutorialEight(Context c) { 136 super(c); 137 bmp = BitmapFactory.decodeResource(c.getResources(), R.drawable.zeus); 138 139 glContext = new OpenGLContext(OpenGLContext.DEPTH_BUFFER); 140 GL11 gl = (GL11)glContext.getGL(); 141 142 gl.glEnable(GL10.GL_LIGHTING); 143 gl.glEnable(GL10.GL_LIGHT0); 144 gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_AMBIENT, matAmbient, 0); 145 gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, matDiffuse, 0); 146 147 gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_AMBIENT, lightAmbient, 0); 148 gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_DIFFUSE, lightDiffuse, 0); 149 gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_POSITION, pos, 0); 150 gl.glEnable(GL10.GL_DEPTH_TEST); 151 gl.glDepthFunc(GL10.GL_LEQUAL); 152 153 gl.glEnable(GL10.GL_TEXTURE_2D); 154 155 gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 156 gl.glClearDepthf(1.0f); 157 158 cubeBuff = makeFloatBuffer(box); 159 texBuff = makeFloatBuffer(texCoords); 160 161 gl.glVertexPointer(3, GL10.GL_FLOAT, 0, cubeBuff); 162 gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); 163 gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, texBuff); 164 gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY); 165 166 gl.glEnable(GL10.GL_CULL_FACE); 167 gl.glShadeModel(GL10.GL_SMOOTH); 168 169 tex = loadTexture(gl, c, bmp); 170 } 171 172 float xrot = 0.0f; 173 float yrot = 0.0f; 174 175 protected void onDraw(Canvas canvas) { 176 GL11 gl = (GL11)glContext.getGL(); 177 int w = getWidth(); 178 int h = getHeight(); 179 180 glContext.waitNative(canvas, this); 181 182 gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); 183 184 gl.glMatrixMode(GL10.GL_PROJECTION); 185 gl.glLoadIdentity(); 186 gl.glViewport(0,0,w,h); 187 GLU.gluPerspective(gl, 45.0f, ((float)w)/h, 1f, 100f); 188 189 gl.glMatrixMode(GL10.GL_MODELVIEW); 190 gl.glLoadIdentity(); 191 GLU.gluLookAt(gl, 0, 0, 3, 0, 0, 0, 0, 1, 0); 192 193 gl.glRotatef(30.0f, 1, 0, 0); 194 gl.glRotatef(40.0f, 0, 1, 0); 195 196 gl.glColor4f(1.0f, 1, 1, 1.0f); 197 gl.glNormal3f(0,0,1); 198 gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4); 199 gl.glNormal3f(0,0,-1); 200 gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 4, 4); 201 202 gl.glColor4f(1, 1.0f, 1, 1.0f); 203 gl.glNormal3f(-1,0,0); 204 gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 8, 4); 205 gl.glNormal3f(1,0,0); 206 gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 12, 4); 207 208 gl.glColor4f(1, 1, 1.0f, 1.0f); 209 gl.glNormal3f(0,1,0); 210 gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 16, 4); 211 gl.glNormal3f(0,-1,0); 212 gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 20, 4); 213 214 glContext.waitGL(); 215 } 216}