开源项目之Android-GL(OpenGL 编程)
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Android-GL 是 OpenGL 编程的一些 Android 平台上的实例集合,非常适合 OpenGL 初学者。
该项目就22个目标文件,如图:
效果如图:
实例1,效果如图:
代码如下:
protected void init(GL10 gl)
{
// Setup background color
gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
// Smooth shading
gl.glShadeModel(GL10.GL_SMOOTH);
}
public void onDrawFrame(GL10 gl)
{
xrot += 1f;
yrot += 1f;
// Clear screen
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
// Scene view matrix
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glPushMatrix();
gl.glTranslatef(-0.25f, 0.0f, -2f);
gl.glRotatef(xrot, 1.0f, 0.0f, 0.0f);
// Setup triangle data and draw it.
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, triangleBuff);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glColorPointer(4, GL10.GL_FLOAT, 0, colorBuff);
gl.glEnableClientState(GL10.GL_COLOR_ARRAY);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 3);
// Reset to identity
gl.glPopMatrix();
// Clear the color array
gl.glDisableClientState(GL10.GL_COLOR_ARRAY);
// Translation to square location.
gl.glTranslatef(0.25f, 0.0f, -2f);
gl.glRotatef(yrot, 0, 1, 0);
// Setup square data & draw it
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, squareBuff);
gl.glColor4f(0.25f, 0.25f, 0.75f, 1.0f);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4);
}
实例2,效果如图:
实现代码如下:
protected void init(GL10 gl)
{
gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
gl.glEnable(GL10.GL_DEPTH_TEST);
gl.glDepthFunc(GL10.GL_LEQUAL);
gl.glClearDepthf(1.0f);
gl.glShadeModel(GL10.GL_SMOOTH);
}
public void onDrawFrame(GL10 gl)
{
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0, 0, -1);
gl.glPushMatrix();
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, triangleBuff);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glColorPointer(4, GL10.GL_FLOAT, 0, colorBuff);
gl.glEnableClientState(GL10.GL_COLOR_ARRAY);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 3);
gl.glPopMatrix();
gl.glPushMatrix();
gl.glTranslatef(-0.2f, -.1f, -1.0f);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 3);
gl.glPopMatrix();
gl.glPushMatrix();
gl.glTranslatef(0.1f, 0.1f, -0.5f);
gl.glRotatef(45.0f, 0, 0, 1);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 3);
gl.glPopMatrix();
gl.glTranslatef(0.15f, 0.05f, -0.4f);
gl.glRotatef(45, 0, 1, 0);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 3);
gl.glPopMatrix();
}
实例3,效果如图:
代码如下:
protected void init(GL10 gl)
{
gl.glEnable(GL10.GL_LIGHTING);
gl.glEnable(GL10.GL_LIGHT0);
gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_AMBIENT, matAmbient, 0);
gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, matDiffuse, 0);
gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_AMBIENT, lightAmbient, 0);
gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_DIFFUSE, lightDiffuse, 0);
gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_POSITION, lightPos, 0);
gl.glEnable(GL10.GL_DEPTH_TEST);
gl.glDepthFunc(GL10.GL_LEQUAL);
gl.glEnable(GL10.GL_TEXTURE_2D);
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
gl.glClearDepthf(1.0f);
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, cubeBuff);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, texBuff);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
gl.glEnable(GL10.GL_CULL_FACE);
gl.glShadeModel(GL10.GL_SMOOTH);
tex = loadTexture(gl, R.drawable.icon);
}
float xrot = 0.0f;
float yrot = 0.0f;
public void onDrawFrame(GL10 gl)
{
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
setupCube(gl);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
GLU.gluLookAt(gl, 0, 0, 3, 0, 0, 0, 0, 1, 0);
gl.glRotatef(xrot, 1, 0, 0);
gl.glRotatef(yrot, 0, 1, 0);
drawCube(gl);
xrot += 1.0f;
yrot += 0.5f;
}
实例总共有14个!此处就学习了前三甲了!~
学习的目标是成熟!~~
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