From ce09b70ffe8e40afb25b13e940df12d2be03c5fc Mon Sep 17 00:00:00 2001
From: James Turk <james.p.turk@gmail.com>
Date: Sat, 18 Jun 2011 15:27:22 -0400
Subject: [PATCH] gl_cube

---
 demo/gl_cube.py | 110 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 demo/gl_cube.py

diff --git a/demo/gl_cube.py b/demo/gl_cube.py
new file mode 100644
index 0000000..eb3018a
--- /dev/null
+++ b/demo/gl_cube.py
@@ -0,0 +1,110 @@
+from photon import init, InitFlags, video
+from photon.video import Window
+from photon.events import EventType, poll_event, WindowEventType
+import time
+
+vertices = [-1.0, -1.0, -1.0,
+            1.0, -1.0, -1.0,
+            1.0,  1.0, -1.0,
+            -1.0, 1.0, -1.0,
+            -1.0, -1.0,  1.0,
+            1.0, -1.0,  1.0,
+            1.0,  1.0,  1.0,
+            -1.0,  1.0,  1.0]
+colors = [0.0,  1.0,  0.0,  1.0,
+          0.0,  1.0,  0.0,  1.0,
+          1.0,  0.0,  0.0,  1.0,
+          1.0,  0.0,  0.0,  1.0,
+          1.0,  0.0,  0.0,  1.0,
+          1.0,  0.0,  0.0,  1.0,
+          0.0,  0.0,  1.0,  1.0,
+          1.0,  0.0,  1.0,  1.0]
+indices = [0, 4, 5, 0, 5, 1,
+           1, 5, 6, 1, 6, 2,
+           2, 6, 7, 2, 7, 3,
+           3, 7, 4, 3, 4, 0,
+           4, 7, 6, 4, 6, 5,
+           3, 0, 1, 3, 1, 2]
+
+def main():
+    init(InitFlags.EVERYTHING)
+
+    window = Window('gl cube demo', 100, 100, 512, 512,
+                    video.WindowFlags.OPENGL)
+
+    video.gl_set_attribute(video.GL_Attr.SDL_GL_MULTISAMPLEBUFFERS, 1)
+    video.gl_set_attribute(video.GL_Attr.SDL_GL_MULTISAMPLESAMPLES, 4)
+    video.gl_set_attribute(video.GL_Attr.SDL_GL_DOUBLEBUFFER, 1)
+    video.gl_set_attribute(video.GL_Attr.SDL_GL_DEPTH_SIZE, 24)
+    video.gl_set_attribute(video.GL_Attr.SDL_GL_RED_SIZE, 8)
+    video.gl_set_attribute(video.GL_Attr.SDL_GL_GREEN_SIZE, 8)
+    video.gl_set_attribute(video.GL_Attr.SDL_GL_BLUE_SIZE, 8)
+    video.gl_set_attribute(video.GL_Attr.SDL_GL_ALPHA_SIZE, 8)
+
+    window.gl_context
+    video.gl_set_swap_interval(1)
+
+    from OpenGL.GL import *
+    from OpenGL.GLU import gluPerspective
+
+    # setup gl perspective
+    glClearDepth(1)
+    glEnable(GL_DEPTH_TEST)
+    glDepthFunc(GL_LEQUAL)
+    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST)
+    glViewport(0, 0, 512, 512)
+    glMatrixMode(GL_PROJECTION)
+    glLoadIdentity()
+    gluPerspective(45, 512/512, 0.1, 100)
+    glViewport(0, 0, 512, 512)
+    glMatrixMode(GL_MODELVIEW)
+    glLoadIdentity()
+
+    running = True
+    start_time = time.time()
+    frames = 0
+
+    cube_rotation = 0
+
+    while running:
+        frames += 1
+        if frames == 1000:
+            print('FPS: {0:.2f}'.format(frames/(time.time()-start_time)))
+            frames = 0
+            start_time = time.time()
+
+        # event loop
+        while True:
+            event = poll_event()
+            if not event:
+                break
+            elif event.type == EventType.QUIT:
+                running = False
+            elif event.type == EventType.WINDOWEVENT:
+                if event.window.event == WindowEventType.CLOSE:
+                    running = False
+
+        # setup state
+        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT)
+        glLoadIdentity()
+        glTranslatef(0, 0, -10)
+        glRotatef(cube_rotation, 1, 1, 1)
+
+        # draw cube
+        glFrontFace(GL_CW)
+        glVertexPointer(3, GL_FLOAT, 0, vertices)
+        glColorPointer(4, GL_FLOAT, 0, colors)
+        glEnableClientState(GL_VERTEX_ARRAY)
+        glEnableClientState(GL_COLOR_ARRAY)
+        glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_BYTE, indices)
+        glDisableClientState(GL_VERTEX_ARRAY)
+        glDisableClientState(GL_COLOR_ARRAY)
+
+        glLoadIdentity()
+        cube_rotation -= 0.15
+
+        window.swap()
+
+
+if __name__ == '__main__':
+    main()