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#!/usr/bin/env python
'''
Converted to PyGtkGLExt 3/2003 by Alif Wahid <awah005@users.sourceforge.net>
Converted to Python 6/2000 by Jason Petrone <jp@demonseed.net>
/*
* Copyright (c) 1993-1997, Silicon Graphics, Inc.
* ALL RIGHTS RESERVED
* Permission to use, copy, modify, and distribute this software for
* any purpose and without fee is hereby granted, provided that the above
* copyright notice appear in all copies and that both the copyright notice
* and this permission notice appear in supporting documentation, and that
* the name of Silicon Graphics, Inc. not be used in advertising
* or publicity pertaining to distribution of the software without specific,
* written prior permission.
*
* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
*
* US Government Users Restricted Rights
* Use, duplication, or disclosure by the Government is subject to
* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
* (c)(1)(ii) of the Rights in Technical Data and Computer Software
* clause at DFARS 252.227-7013 and/or in similar or successor
* clauses in the FAR or the DOD or NASA FAR Supplement.
* Unpublished-- rights reserved under the copyright laws of the
* United States. Contractor/manufacturer is Silicon Graphics,
* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
*
* OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
*/
/*
* movelight.c
* This program demonstrates when to issue lighting and
* transformation commands to render a model with a light
* which is moved by a modeling transformation (rotate or
* translate). The light position is reset after the modeling
* transformation is called. The eye position does not change.
*
* A sphere is drawn using a grey material characteristic.
* A single light source illuminates the object.
*
* Interaction: pressing the left mouse button alters
* the modeling transformation (x rotation) by 30 degrees.
* The scene is then redrawn with the light in a new position.
*/
'''
import pygtk
pygtk.require('2.0')
from gtk.gtkgl.apputils import *
# Implement the GLScene interface
# to have the MoveLight scene rendered.
class MoveLight(GLScene,
GLSceneButton):
def __init__(self):
GLScene.__init__(self,
gtk.gdkgl.MODE_RGB |
gtk.gdkgl.MODE_DEPTH |
gtk.gdkgl.MODE_DOUBLE)
self.spin = 0
def init(self):
glClearColor(0.0, 0.0, 0.0, 0.0)
glClearDepth(1.0)
glShadeModel(GL_SMOOTH)
glEnable(GL_LIGHTING)
glEnable(GL_LIGHT0)
glEnable(GL_DEPTH_TEST)
def display(self, width, height):
position = [0.0, 0.0, 1.5, 1.0]
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glPushMatrix()
gluLookAt(0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0)
glPushMatrix()
glRotated(self.spin, 1.0, 0.0, 0.0)
glLightfv(GL_LIGHT0, GL_POSITION, position)
glTranslated(0.0, 0.0, 1.5)
glDisable(GL_LIGHTING)
glColor3f(0.0, 1.0, 1.0)
gtk.gdkgl.draw_cube(False, 0.1)
glEnable(GL_LIGHTING)
glPopMatrix()
gtk.gdkgl.draw_torus(True, 0.275, 0.85, 8, 15)
glPopMatrix()
def reshape(self, width, height):
glViewport(0, 0, width, height)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(40.0, width/height, 1.0, 20.0)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
def button_press(self, width, height, event):
if event.button == 1:
self.spin = (self.spin + 30) % 360
elif event.button == 3:
self.spin = (self.spin - 30) % 360
self.invalidate()
def button_release(self, width, height, event):
pass
if __name__ == '__main__':
glscene = MoveLight()
glapp = GLApplication(glscene)
glapp.set_title('MoveLight')
glapp.run()
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