OpenGL Line Width

Question

In my OpenGL app, it won\'t let me draw a line greater then ten pixels wide. Is there a way to make it draw more than ten pixels?

void OGL_Renderer::drawLin         


        

Answer 1

Ah, now that I understood what you meant:

1. draw a one by one square.
2. calc the length and orientation of the line
3. stretch it to the length in x
4. translate to startpos and rotate to line_orientation

or:

1. get vector of line: v :(x2 - x1, y2 - y1)
2. normalize v: n 3- get orthogonal (normal) of the vector : o (easy in 2d)
3. add and subtract o from the line's end and start point to get 4 corner points
4. draw a quad with these points.