@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
GL11 gl11 = (GL11) gl;
// projection
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
// view port
gl.glViewport(0, 0, width, height);
aspect = (float) width / (float) height;
// model view
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
// vertex coords
vbo.bufferData(gl11, GGLUtils.cubeVertices, GGLUtils.cubeTexCoords);
// indices
ibo.bufferData(gl11, GGLUtils.cubeIndices);
// load bitmap
texture = GGLUtils.loadTexture(gl11, getResources(), R.drawable.texture_02);
}
@Override
public void onDrawFrame(GL10 gl) {
gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
GL11 gl11 = (GL11) gl;
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
// perspective
GLU.gluPerspective(gl11, 45, aspect, 0.01f, 100f);
GLU.gluLookAt(
gl,
(float) (Math.cos(angle) * eyeDistance),
0,
(float) (Math.sin(angle) * eyeDistance),
0,
0,
0.0f,
0.0f,
1.0f,
0.0f);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
// set render status
gl.glEnable(GL10.GL_TEXTURE_2D);
gl.glEnable(GL10.GL_ALPHA_TEST);
gl.glAlphaFunc(GL10.GL_EQUAL, 1.0f);
// gl.glColor4f(1, 1, 1, 1);
// bind
gl.glBindTexture(GL10.GL_TEXTURE_2D, texture);
vbo.bind(gl11);
// left
gl11.glPushMatrix();
{
gl11.glTranslatef(-1, 0, 0);
ibo.draw(gl11);
}
gl11.glPopMatrix();
// right
gl11.glPushMatrix();
{
gl11.glTranslatef(1, 0, 0);
ibo.draw(gl11);
}
gl11.glPopMatrix();
// up
gl11.glPushMatrix();
{
gl11.glTranslatef(0, -1, 0);
ibo.draw(gl11);
}
gl11.glPopMatrix();
// down
gl11.glPushMatrix();
{
gl11.glTranslatef(0, 1, 0);
ibo.draw(gl11);
}
gl11.glPopMatrix();
// unbind
vbo.unbind(gl11);
gl.glDisable(GL10.GL_TEXTURE_2D);
angle += (float) (1f / 180f * Math.PI);
}
