class RenderWindow:
"""GLFW Rendering window class"""
def __init__(self):
# save current working directory
cwd = os.getcwd()
# Initialize the library
if not glfw.init():
return
# restore cwd
os.chdir(cwd)
# buffer hints
glfw.window_hint(glfw.DEPTH_BITS, 32)
# define desired frame rate
self.frame_rate = 100
# make a window
self.width, self.height = 640, 480
self.aspect = self.width / float(self.height)
self.window = glfw.create_window(self.width, self.height,
"2D Graphics", None, None)
if not self.window:
glfw.terminate()
return
# Make the window's context current
glfw.make_context_current(self.window)
# initialize GL
glViewport(0, 0, self.width, self.height)
glEnable(GL_DEPTH_TEST)
glClearColor(1.0, 1.0, 1.0, 1.0)
glMatrixMode(GL_PROJECTION)
glOrtho(-self.width / 2, self.width / 2, -self.height / 2,
self.height / 2, -2, 2)
glMatrixMode(GL_MODELVIEW)
# set window callbacks
glfw.set_mouse_button_callback(self.window, self.onMouseButton)
glfw.set_key_callback(self.window, self.onKeyboard)
glfw.set_window_size_callback(self.window, self.onSize)
# create 3D
self.scene = Scene(self.width, self.height)
# exit flag
self.exitNow = False
# animation flag
self.animation = True
def onMouseButton(self, win, button, action, mods):
if button is 0 and action is 1:
x, y = glfw.get_cursor_pos(self.window)
x = x / self.width
y = y / self.height
self.scene.drawpoint((x, y))
#print("mouse button: ", win, button, action, mods)
def onKeyboard(self, win, key, scancode, action, mods):
print("keyboard: ", win, key, scancode, action, mods)
if action == glfw.PRESS:
# ESC to quit
if key == glfw.KEY_ESCAPE:
self.exitNow = True
if key == glfw.KEY_V:
# toggle show vector
self.scene.showVector = not self.scene.showVector
if key == glfw.KEY_K:
self.scene.k += 1
if key == glfw.KEY_M:
self.scene.m += 100
if key == glfw.KEY_C:
self.scene.clear()
def onSize(self, win, width, height):
print("onsize: ", win, width, height)
self.width = width
self.height = height
self.aspect = width / float(height)
glViewport(0, 0, self.width, self.height)
def run(self):
# initializer timer
glfw.set_time(0.0)
t = 0.0
while not glfw.window_should_close(self.window) and not self.exitNow:
# update every x seconds
currT = glfw.get_time()
if currT - t > 1.0 / self.frame_rate:
# update time
t = currT
# clear
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
# render scene
self.scene.render()
glfw.swap_buffers(self.window)
# Poll for and process events
glfw.poll_events()
# end
glfw.terminate()
