Can you tell me if is possible to use text on OpenGL? Page curl and selectable text?

To resolve this question:
http://stackoverflow.com/questions/8675360/page-curl-with-text-on-android

Thanks

Thanks a lot …

Thanks A Lot

Great set of Tutorials ! Thanks for such excellent resource.

I was looking at the code for memory allocation of indices array in class Plane:

short[] indices = new short[(widthSegments + 1) * (heightSegments + 1)
* 6];

I think the array is getting over-allocated. The correct allocation should be:

short indices[] = new short[(widthSegments) * (heightSegments) * 2
* 3];

My logic:

1) It takes 3 values to represent triangle (last multiplication by 3)
2) The number of triangles in any plane will be (widthSegments * heightSegments * 2).

For example: if a plane is divided into 3 widthsegments and 2 heightsegments, then number of triangles will be 12 (3 * 2 * 2)

Please correct if I am wrong.

Thanks!
Anay

Do the first 2 lines of this array create 2 triangles (0-4-5 and 0-5-1) or 3 triangles? (0-4-5, 4-5-0 and 0-5-1)

it’s 22:00 in my country now,but*****

I have one question: what is the idea behind this equation (line code):
int n = y * (widthSegments + 1) + x;
?
Thanks again! These tutorials have helped me a lot with my new project!

Can you Please tell me how to Draw a Sphere/Circle instead of a Plane?

Waiting for your Reply.

Thanks in advance!

I forget to flip Y-coordinate, the order of the indices is correct.

You’re doing a great job in this blog! Simple, clear and professionally!
I have a one little question…

In the Plane constructor you create indices in the clockwise order, but render it in counterclockwise as in previous tutorials. I try it and it works only in this combination, if I replace CCW to CW in draw method (gl.glFrontFace(GL10.GL_CCW) -> gl.glFrontFace(GL10.GL_CW)) I’ll get an empty screen.

Сould you shed some light on this situation?

Best Regards, Andranik

float vertices[] = { -width, -height, -depth, // 0
width, -height, -depth, // 1
width, height, -depth, // 2
-width, height, -depth, // 3
-width, -height, depth, // 4
width, -height, depth, // 5
width, height, depth, // 6
-width, height, depth, // 7
};

short indices[] = {
//FRONT
4, 5, 6,
4, 6, 7,
//BACK
1, 0, 3,
1, 3, 2,
//LEFT
0, 4, 7,
0, 7, 3,
//RIGHT
5, 1, 2,
5, 2, 6,
//TOP
7, 6, 2,
7, 2, 3,
//BOTTOM
0, 1, 5,
0, 5, 4,
};

and textureindex is

float textureCoordinates[] = {
1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 1.0f,
0.0f, 0.0f,

1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 1.0f,
0.0f, 0.0f,

1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 1.0f,
0.0f, 0.0f,

1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 1.0f,
0.0f, 0.0f,

1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 1.0f,
0.0f, 0.0f,

1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 1.0f,
0.0f, 0.0f,
};

what’s wrong with me?
thanks