Nexus One Spinny Cube

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I bought a Nexus One 2 weeks ago, and I've started learning its programming environment. Since I've gotten into the habit of making a spinny cube for every platform (previously: V3 RAZR, NDS), here's my Android one:

This was my first experience with OpenGL ES, and gaaaaaaah it's not fun. I think some of that is also Android's Java implementation of it, since you have to jump through hoops to make the now-required geometry buffers in the required hardware format. For complex game engines, it doesn't matter. But for "my first OpenGL", what a difference! For example, drawing a quad:

Regular OpenGL

OpenGL ES

gl.glBegin(GL.GL_QUADS);

gl.glVertex3f(0.0f, 0.0f, 0.0f);

gl.glVertex3f(1.0f, 0.0f, 0.0f);

gl.glVertex3f(1.0f, 1.0f, 0.0f);

gl.glVertex3f(0.0f, 1.0f, 0.0f);

gl.glEnd()

final float quad[] = {

    0.0f, 0.0f, 0.0f,

    1.0f, 0.0f, 0.0f,

    0.0f, 1.0f, 0.0f,

    1.0f, 1.0f, 0.0f,

};

int storageSize = quad.length * Float.SIZE / 8;

ByteBuffer quadStorage = ByteBuffer.allocateDirect(storageSize);

quadStorage.order(ByteOrder.nativeOrder());

FloatBuffer quadBuffer = quadStorage.asFloatBuffer();

quadBuffer.put(quad);

quadBuffer.position(0);

gl.glVertexPointer(3, GL10.GL_FLOAT, 0, quadBuffer);

gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);

gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, quadBuffer.capacity()/3);

gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);

Anyway, continuing on with more Android this weekend. My goal is to write a little app for interacting with Nectarine. That should cover a range of GUI, network, XML parsing, and IPC tasks.

Kevin Vance - Nexus One Spinny Cube

Nexus One Spinny Cube