I need is a single line rendered from within PsychToolBox in Matlab. So:
glBegin(GL.LINES);
glVertex3f(0, 0, 0);
glVertex3f(1, 1, 1);
glEnd;
Returns:
??? The class "GL" is undefined. Perhaps Java is not running.
I'm using the code provided here.
However, I substituted GL_LINES with GL.LINES to fit psychtoolbox convention (naturally, tried it both ways).
I had a similar issue when I added a subfunction that was fixed by making GL a global variable: