How to find the correct scale

Tutorials concerning the OpenGL® ES cross-platform API for full-function 2D and 3D graphics on the Google-Android platform.

How to find the correct scale

Postby raich » Wed Feb 24, 2010 7:50 pm

Hello,

I'm trying to draw rectangles on the camera screen.

I've drawn a rectangle defined by:

float myVertices1 []= {
-0.0625f, -0.5f, 0.0f,
0.0625f, -0.5f, 0.0f,
-0.0625f, 0.5f, 0.0f,
0.0625f, 0.5f, 0.0f
};

with indices:
byte indices[] = { 0,1,2, 2,3,1};

and scale is set to:

gl.glScalef(4,4,4);

With the above values I can clearly see the rectangle.

Now I have to draw another rectangle where vertices are very close:

float myVertices1 []= {
-0.33969933f, 0.20863467f, 0.0f,
-0.33968616f, 0.20865479f, 0.0f,
-0.33969933f, 0.20868467f, 0.0f,
-0.33968616f, 0.20870478f, 0.0f
};

In order to see the rectangle I have to definitely change the scale value. But how much?

I'm doing some trail and error - without any success.
Thanking you all in advance

-raich
raich
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