< OpenGL Programming < Basics
Note that this is for very outdated versions of OpenGL.
Drawing points
glBegin(GL_POINTS);
glVertex2f(0.5f, 0.5f);
glVertex2f(0.5f, -0.5f);
glVertex2f(-0.5f, 0.5f);
glVertex2f(-0.5f, -0.5f);
glEnd();
Drawing lines
/* Draws two horizontal lines */
glBegin(GL_LINES);
glVertex2f(0.5f, 0.5f);
glVertex2f(-0.5f, 0.5f);
glVertex2f(-0.5f, -0.5f);
glVertex2f(0.5f, -0.5f);
glEnd();
Loop of lines
/* Draws a square */
glBegin(GL_LINE_LOOP);
glVertex2f(0.5f, 0.5f);
glVertex2f(-0.5f, 0.5f);
glVertex2f(-0.5f, -0.5f);
glVertex2f(0.5f, -0.5f);
glEnd();
Connected lines
/* Draws a 'C' */
glBegin(GL_LINE_STRIP);
glVertex2f(0.5f, 0.5f);
glVertex2f(-0.5f, 0.5f);
glVertex2f(-0.5f, -0.5f);
glVertex2f(0.5f, -0.5f);
glEnd();
This article is issued from Wikibooks. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.