forked from rougier/pyglfw
/
simple.py
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simple.py
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# -----------------------------------------------------------------------------
# GLFW - An OpenGL framework
# API version: 3.0.1
# WWW: http://www.glfw.org/
# ----------------------------------------------------------------------------
# Copyright (c) 2002-2006 Marcus Geelnard
# Copyright (c) 2006-2010 Camilla Berglund
#
# Python bindings - Copyright (c) 2013 Nicolas P. Rougier
#
# This software is provided 'as-is', without any express or implied
# warranty. In no event will the authors be held liable for any damages
# arising from the use of this software.
#
# Permission is granted to anyone to use this software for any purpose,
# including commercial applications, and to alter it and redistribute it
# freely, subject to the following restrictions:
#
# 1. The origin of this software must not be misrepresented; you must not
# claim that you wrote the original software. If you use this software
# in a product, an acknowledgment in the product documentation would
# be appreciated but is not required.
#
# 2. Altered source versions must be plainly marked as such, and must not
# be misrepresented as being the original software.
#
# 3. This notice may not be removed or altered from any source
# distribution.
#
# -----------------------------------------------------------------------------
#
# This short example shows how the GLFW API looks and how easy it is to create
# and a window and OpenGL context with it. There are many more functions than
# those used here, but these are all you need to get started.
#
# -----------------------------------------------------------------------------
if __name__ == '__main__':
import sys
import glfw
import OpenGL.GL as gl
def on_key(window, key, scancode, action, mods):
if key == glfw.GLFW_KEY_ESCAPE and action == glfw.GLFW_PRESS:
glfw.glfwSetWindowShouldClose(window,1)
# Initialize the library
if not glfw.glfwInit():
sys.exit()
# Create a windowed mode window and its OpenGL context
window = glfw.glfwCreateWindow(640, 480, str.encode("Hello World"), None, None)
if not window:
glfw.glfwTerminate()
sys.exit()
# Make the window's context current
glfw.glfwMakeContextCurrent(window)
# Install a key handler
glfw.glfwSetKeyCallback(window, on_key)
# Loop until the user closes the window
while not glfw.glfwWindowShouldClose(window):
# Render here
width, height = glfw.glfwGetFramebufferSize(window)
ratio = width / float(height)
gl.glViewport(0, 0, width, height)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glMatrixMode(gl.GL_PROJECTION)
gl.glLoadIdentity()
gl.glOrtho(-ratio, ratio, -1, 1, 1, -1)
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glLoadIdentity()
# gl.glRotatef(glfw.glfwGetTime() * 50, 0, 0, 1)
gl.glBegin(gl.GL_TRIANGLES)
gl.glColor3f(1, 0, 0)
gl.glVertex3f(-0.6, -0.4, 0)
gl.glColor3f(0, 1, 0)
gl.glVertex3f(0.6, -0.4, 0)
gl.glColor3f(0, 0, 1)
gl.glVertex3f(0, 0.6, 0)
gl.glEnd()
# Swap front and back buffers
glfw.glfwSwapBuffers(window)
# Poll for and process events
glfw.glfwPollEvents()
glfw.glfwTerminate()