# Creating Sphere from Points &amp; missing 3d Bezier Formula

I’ve translated some code inorder to create a sphere from n number of points.

here it is

``````

void testApp::createSphereFromPoints( const ofxVec3f &center, float radius, int segments )
{
if( segments < 0 )
return;

float *verts = new float[(segments+1)*2*3];
for( int j = 0; j < segments / 2; j++ ) {
float theta1 = j * 2 * 3.14159f / segments - ( 3.14159f / 2.0f );
float theta2 = (j + 1) * 2 * 3.14159f / segments - ( 3.14159f / 2.0f );

for( int i = 0; i <= segments; i++ ) {
ofxVec3f e, p;
float theta3 = i * 2 * 3.14159f / segments;

e.x = cos( theta1 ) * cos( theta3 );
e.y = sin( theta1 );
e.z = cos( theta1 ) * sin( theta3 );
p = e * radius + center;

verts[i*3*2+0] = p.x;
verts[i*3*2+1] = p.y;
verts[i*3*2+2] = p.z;

e.x = cos( theta2 ) * cos( theta3 );
e.y = sin( theta2 );
e.z = cos( theta2 ) * sin( theta3 );
p = e * radius + center;

verts[i*3*2+3] = p.x;
verts[i*3*2+4] = p.y;
verts[i*3*2+5] = p.z;

spherePoints.push_back(p);
}
}
}

``````

It pushes an number of points to “ofxVec3d spherPoints”. and another function pushes n number of boids into the space with an initial location of a point in over the surface of sphere.

I got that after all:
[attachment=1:5noqy88m]1.jpg[/attachment:5noqy88m]

What I am trying to do is, I want to select randomly 2 points from my sphere, and draw a 3d Bezier line between that two points inorder to get that image:
[attachment=1:5noqy88m]2.jpg[/attachment:5noqy88m]

I have the 2d bezier formula, I am looking for 3d version.

If anyone interested with the code I can upload.

Hi aquila!
that sphere looks pretty cool! mind if u upload the code pls? i’d really love to check it out! thanks so much in advance!!! :shock:

[quote author=“inceptionizta”]Hi aquila!
that sphere looks pretty cool! mind if u upload the code pls? i’d really love to check it out! thanks so much in advance!!! :shock:[/quote]

Ofcourse, here is the code.

src.zip

Tnx a lot! Really saved me a lot of time. I owe you one… did you ever figure out the 3d Bezier Formula?

plz send me the code