Changes between Initial Version and Version 1 of tutorial

Timestamp:

Jun 26, 2013, 9:50:28 PM (11 years ago)

Author:

leon

Comment:

First

tutorial

@@ +1 @@
+= OpenGL tutorial =
+
+
+== Legacy OpenGL ==
+Create the following {{{first.c}}} using your favourite editor.
+{{{
+#!c
+#include <GL/glut.h>
+
+void display()
+{
+  glClear(GL_COLOR_BUFFER_BIT);
+  glColor3f(1.0, 0.4, 1.0);
+  glBegin(GL_LINES);
+    glVertex2f(0.1, 0.1);
+    glVertex3f(0.8, 0.8, 1.0);
+  glEnd();
+  glutSwapBuffers();
+}
+
+int main(int argc, char *argv[])
+{
+  glutInit(&argc,argv);
+  glutInitDisplayMode(GLUT_DOUBLE);
+  glutCreateWindow("first.c GL code");
+  glutDisplayFunc(display);
+  glutMainLoop();
+  return 0;
+}
+}}}
+
+Create {{{Makefile}}} to build your program.
+
+{{{
+#!sh
+CFLAGS=-Wall
+LDFLAGS=-lGL -lGLU -lglut -lGLEW
+
+ALL=first
+default: $(ALL)
+
+first : first.o
+
+clean:
+      rm -rf *~ *.o $(ALL)
+}}}
+Beware that Makefile is TAB aware. So the last line should contain TAB indentation and not spacing.
+
+Make and run the program with
+{{{
+#!sh
+make
+./first
+}}}
+
+Try the same program in Python
+{{{
+#!python
+from OpenGL.GLUT import *
+from OpenGL.GL import *
+import sys
+
+def display():
+    glClear(GL_COLOR_BUFFER_BIT)
+    glColor3f(1.0, 0.4, 1.0)
+    glBegin(GL_LINES)
+    glVertex2f(0.1, 0.1)
+    glVertex3f(0.8, 0.8, 1.0)
+    glEnd()
+    glutSwapBuffers()
+
+if __name__ == "__main__":
+    glutInit(sys.argv)
+    glutInitDisplayMode(GLUT_DOUBLE)
+    glutCreateWindow("first.py GL code")
+    glutDisplayFunc(display)
+    glutMainLoop()
+}}}
+and run it with 
+{{{
+!sh
+python first.py
+}}}
+
+