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PORotating Sphere with Texture iOS
 

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  1. PORotating Sphere with Texture iOS
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    <p>I know its very basic question but i couldn't find the answer i am looking for. Basically i have to display a rotating 3D sphere on camera overlay. I have got everything except applying texture to that sphere. Here is my code which generate the triangles strips. </p> <pre><code>int createSphere (GLfloat spherePoints[], GLfloat fRadius, GLfloat step){ int points = 0; GLfloat uStep = DEGREES_TO_RADIANS (step); GLfloat vStep = uStep; for (GLfloat u = 0.0f; u &lt;= (2 * M_PI); u += uStep) { for (GLfloat v = -M_PI_2; v &lt;= M_PI_2; v += vStep) { points++; spherePoints[(points - 1) * 3] = fRadius * cosf(v) * cosf(u); // x spherePoints[((points - 1) * 3) + 1] = fRadius * cosf(v) * sinf(u); // y spherePoints[((points - 1) * 3) + 2] = fRadius * sinf(v); // z points++; spherePoints[(points - 1) * 3] = fRadius * cosf(v) * cosf(u + uStep); // x spherePoints[((points - 1) * 3) + 1] = fRadius * cosf(v) * sinf(u + uStep); // y spherePoints[((points - 1) * 3) + 2] = fRadius * sinf(v); // z points++; spherePoints[(points - 1) * 3] = fRadius * cosf(v + vStep) * cosf(u); // x spherePoints[((points - 1) * 3) + 1] = fRadius * cosf(v + vStep) * sinf(u); // y spherePoints[((points - 1) * 3) + 2] = fRadius * sinf(v + vStep); // z points++; spherePoints[(points - 1) * 3] = fRadius * cosf(v + vStep) * cosf(u + uStep); // x spherePoints[((points - 1) * 3) + 1] = fRadius * cosf(v + vStep) * sinf(u + uStep); // y spherePoints[((points - 1) * 3) + 2] = fRadius * sinf(v + vStep); // z } } return points; } </code></pre> <p>Can anybody explain how to generate the Texture coordinates and Normals?</p>
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    1. COWhat's the texture of? Specifically, what projection do you want it to use?
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    2. COPost the OpenGL code: where you creating texture, binding it and rendering the scene. This code is useless for the question.
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    3. CO@tc The texture is of globe with dimensions. 512*1024.
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