1 files changed, 95 insertions, 0 deletions
diff --git a/demos/natives/x11/cube.c b/demos/natives/x11/cube.c
new file mode 100644
index 0000000..6f2fd57
--- /dev/null
+++ b/demos/natives/x11/cube.c
@@ -0,0 +1,95 @@
+
+/* Copyright (c) Mark J. Kilgard, 1997. */
+
+/* This program is freely distributable without licensing fees 
+   and is provided without guarantee or warrantee expressed or 
+   implied. This program is -not- in the public domain. */
+
+/* This program was requested by Patrick Earl; hopefully someone else
+   will write the equivalent Direct3D immediate mode program. */
+
+#include <GL/glut.h>
+
+GLfloat light_diffuse[] = {1.0, 0.0, 0.0, 1.0};  /* Red diffuse light. */
+GLfloat light_position[] = {1.0, 1.0, 1.0, 0.0};  /* Infinite light location. */
+GLfloat n[6][3] = {  /* Normals for the 6 faces of a cube. */
+  {-1.0, 0.0, 0.0}, {0.0, 1.0, 0.0}, {1.0, 0.0, 0.0},
+  {0.0, -1.0, 0.0}, {0.0, 0.0, 1.0}, {0.0, 0.0, -1.0} };
+GLint faces[6][4] = {  /* Vertex indices for the 6 faces of a cube. */
+  {0, 1, 2, 3}, {3, 2, 6, 7}, {7, 6, 5, 4},
+  {4, 5, 1, 0}, {5, 6, 2, 1}, {7, 4, 0, 3} };
+GLfloat v[8][3];  /* Will be filled in with X,Y,Z vertexes. */
+
+void
+drawBox(void)
+{
+  int i;
+
+  for (i = 0; i < 6; i++) {
+    glBegin(GL_QUADS);
+    glNormal3fv(&n[i][0]);
+    glVertex3fv(&v[faces[i][0]][0]);
+    glVertex3fv(&v[faces[i][1]][0]);
+    glVertex3fv(&v[faces[i][2]][0]);
+    glVertex3fv(&v[faces[i][3]][0]);
+    glEnd();
+  }
+}
+
+void
+display(void)
+{
+  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+  drawBox();
+  glutSwapBuffers();
+}
+
+void
+init(void)
+{
+  /* Setup cube vertex data. */
+  v[0][0] = v[1][0] = v[2][0] = v[3][0] = -1;
+  v[4][0] = v[5][0] = v[6][0] = v[7][0] = 1;
+  v[0][1] = v[1][1] = v[4][1] = v[5][1] = -1;
+  v[2][1] = v[3][1] = v[6][1] = v[7][1] = 1;
+  v[0][2] = v[3][2] = v[4][2] = v[7][2] = 1;
+  v[1][2] = v[2][2] = v[5][2] = v[6][2] = -1;
+
+  /* Enable a single OpenGL light. */
+  glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
+  glLightfv(GL_LIGHT0, GL_POSITION, light_position);
+  glEnable(GL_LIGHT0);
+  glEnable(GL_LIGHTING);
+
+  glClearColor( 0.3f, 0.3f, 5.0f, 1.0f );
+
+  /* Use depth buffering for hidden surface elimination. */
+  glEnable(GL_DEPTH_TEST);
+
+  /* Setup the view of the cube. */
+  glMatrixMode(GL_PROJECTION);
+  gluPerspective( /* field of view in degree */ 40.0,
+    /* aspect ratio */ 1.0,
+    /* Z near */ 1.0, /* Z far */ 10.0);
+  glMatrixMode(GL_MODELVIEW);
+  gluLookAt(0.0, 0.0, 5.0,  /* eye is at (0,0,5) */
+    0.0, 0.0, 0.0,      /* center is at (0,0,0) */
+    0.0, 1.0, 0.);      /* up is in positive Y direction */
+
+  /* Adjust cube position to be asthetic angle. */
+  glTranslatef(0.0, 0.0, -1.0);
+  glRotatef(60, 1.0, 0.0, 0.0);
+  glRotatef(-20, 0.0, 0.0, 1.0);
+}
+
+int
+main(int argc, char **argv)
+{
+  glutInit(&argc, argv);
+  glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
+  glutCreateWindow("red 3D lighted cube");
+  glutDisplayFunc(display);
+  init();
+  glutMainLoop();
+  return 0;             /* ANSI C requires main to return int. */
+}