CODEWITHSUNDEEP
openglvariable-assignment
JuanDelCarlos
JuanDelCarlos

Reputation: 57

How to get a midpoint of a line and a square(openGL)

Do I need to look for a formula to get the midpoint? Or there is already a function in openGL that allows me to do so.

I thought up a code that some I think that is close:

    if(num1 % 2 == 0)
    {

    }

What I mean is for the line to get the midpoint (openGL)

    glVertex3f(-3,0.0,0.0);
    glVertex3f(3,0.0,0.0);

Upvotes: 0

Views: 899

Answers (2)

datenwolf
datenwolf

Reputation: 162309

Or there is already a function in openGL that allows me to do so.

OpenGL is not a math library! It just draws things, and that's how it should be.

Upvotes: 0

cmannett85
cmannett85

Reputation: 22366

If you want the midpoint of a line segment (as your edit implies), it's simple linear algebra:

//  Where p1 and p2 are your line end points.
midpoint = p1 + ( ( p2 - p1 ) * 0.5 )
//  Or...
midpoint = ( p1 + p2 ) * 0.5;

Upvotes: 1

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