class Egg(object):
def __init__(self, width, height):
# display initializations
self.__window = Window(width, height, vsync=True)
self.__background_color = (0, 0, 0, 1.0)
# self._fps_display = pyglet.clock.ClockDisplay()
self.__key_state_handler = key.KeyStateHandler()
self.__scene = None
self.__window.event(self.on_draw)
self.__window.push_handlers(self.__key_state_handler)
self.__camera = None
#schedule regular updates
pyglet.clock.schedule_interval(self.update, 1 / 100.0)
@property
def window(self):
return self.__window
@property
def background_color(self):
return self.__background_color
@background_color.setter
def background_color(self, value):
self.__background_color = value
def register_scene(self, scene):
self.__scene = scene
self.__camera = Camera("main_camera", (0, 0), self.__window.height / 2.)
self.__scene.root.add_child(self.__camera)
self.__camera.target.x = self.__window.width / 2.
self.__camera.target.y = self.__window.height / 2.
self.__window.event(self.__scene.on_mouse_press)
self.__window.event(self.__scene.on_mouse_release)
self.__window.event(self.__scene.on_mouse_drag)
self.__window.event(self.__scene.on_mouse_motion)
def on_draw(self):
self.__window.clear()
glClearColor(*self.__background_color)
if self.__scene is not None:
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
# draw batches
self.__camera.focus(self.__window.width, self.__window.height)
self.__scene.draw()
# draw specific batches for the hud
self.__camera.hud_mode(self.__window.width, self.__window.height)
self.__scene.draw_head_display()
def update(self, dt):
if self.__scene is not None:
self.__scene.update(dt)
self.__scene.process_keyboard(self.__key_state_handler, dt)
self.__camera.update(dt)
class Egg(object):
def __init__(self, width, height):
# display initializations
self.__window = Window(width, height, vsync=True)
self.__background_color = (0, 0, 0, 1.0)
# self._fps_display = pyglet.clock.ClockDisplay()
self.__key_state_handler = key.KeyStateHandler()
self.__scene = None
self.__window.event(self.on_draw)
self.__window.push_handlers(self.__key_state_handler)
self.__camera = None
#schedule regular updates
pyglet.clock.schedule_interval(self.update, 1 / 100.0)
@property
def window(self):
return self.__window
@property
def background_color(self):
return self.__background_color
@background_color.setter
def background_color(self, value):
self.__background_color = value
def register_scene(self, scene):
self.__scene = scene
self.__camera = Camera("main_camera", (0, 0),
self.__window.height / 2.)
self.__scene.root.add_child(self.__camera)
self.__camera.target.x = self.__window.width / 2.
self.__camera.target.y = self.__window.height / 2.
self.__window.event(self.__scene.on_mouse_press)
self.__window.event(self.__scene.on_mouse_release)
self.__window.event(self.__scene.on_mouse_drag)
self.__window.event(self.__scene.on_mouse_motion)
def on_draw(self):
self.__window.clear()
glClearColor(*self.__background_color)
if self.__scene is not None:
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
# draw batches
self.__camera.focus(self.__window.width, self.__window.height)
self.__scene.draw()
# draw specific batches for the hud
self.__camera.hud_mode(self.__window.width, self.__window.height)
self.__scene.draw_head_display()
def update(self, dt):
if self.__scene is not None:
self.__scene.update(dt)
self.__scene.process_keyboard(self.__key_state_handler, dt)
self.__camera.update(dt)
class ExpWindow(object):
def __init__(self, background_color=dark_gray, clock=mono_clock.get_time):
# lazy load, partially to avoid auto-formatter that wants to
# do imports, *then* dict setting
from pyglet import gl
from pyglet.window import Window
self._background_color = Vector4f(background_color)
self.clock = clock
self.current_time = 0
self.prev_time = 0
# can bump down `samples` if performance is hurting
config = gl.Config(depth_size=0, double_buffer=True,
alpha_size=8, sample_buffers=1,
samples=4, vsync=False,
major_version=3, minor_version=3)
display = pyglet.canvas.get_display()
screen = display.get_screens()[0]
self._win = Window(resizable=False, fullscreen=True,
screen=screen, config=config,
style='borderless', vsync=True)
self._win.event(self.on_key_press)
atexit.register(self._on_close)
self.context = mgl.create_context(require=int('%i%i0' % (config.major_version,
config.minor_version)))
self.context.viewport = (0, 0, self.width, self.height)
self.context.enable(mgl.BLEND)
self.frame_period # do this before we've drawn anything
# in principle, should be disconnected from the window
# but we're saving time & mental energy
self.cam = Camera(projection=height_ortho(self.width, self.height))
def on_key_press(self, symbol, modifiers):
if symbol == pyglet.window.key.ESCAPE:
sys.exit(1)
def _on_close(self):
if self._win.context:
self._win.close()
def flip(self):
self._win.switch_to()
self._win.dispatch_events()
self._win.flip()
self.context.clear(*self._background_color)
current_time = self.clock()
self.prev_time = self.current_time
self.current_time = current_time
return self.current_time
def close(self):
self._win.close()
@property
def dt(self):
return self.current_time - self.prev_time
def set_mouse_visible(self, val):
self._win.set_mouse_visible(val)
@property
def width(self):
return self._win.width
@property
def height(self):
return self._win.height
@property
def background_color(self):
return self._background_color
@background_color.setter
def background_color(self, val):
if len(val) != 4:
raise ValueError('Background color must be RGBA.')
self._background_color.xyzw = val
@property
def frame_period(self):
# get a whole-number version of the frame period
# very coarse and fragile, should get this from the
# the video mode, e.g. glfw.get_video_mode
if not hasattr(self, '_frame_period'):
possible = [60.0, 144.0, 240.0] # TODO: infer from machine...
vals = []
for _ in range(20):
self.flip()
vals.append(self.dt)
# chop off the first few, which are not reflective of the
# "real" FPS
avg = 1/(sum(vals[5:])/float(len(vals[5:])))
dff = [abs(avg - p) for p in possible]
fps = [v for v, d in zip(possible, dff) if d == min(dff)]
if not len(fps):
self._frame_period = 1/60.0 # default
else:
self._frame_period = 1/fps[0]
return self._frame_period
class ImageViewer(object):
"""A simple class for viewing images using pyglet."""
def __init__(self,
caption,
height,
width,
monitor_keyboard=False,
relevant_keys=None):
"""
Initialize a new image viewer.
Args:
caption (str): the caption/title for the window
height (int): the height of the window
width (int): the width of the window
monitor_keyboard: whether to monitor events from the keyboard
relevant_keys: the relevant keys to monitor events from
Returns:
None
"""
self.caption = caption
self.height = height
self.width = width
self.monitor_keyboard = monitor_keyboard
self.relevant_keys = relevant_keys
self._window = None
self._pressed_keys = []
self._is_escape_pressed = False
@property
def is_open(self):
"""Return a boolean determining if this window is open."""
return self._window is not None
@property
def is_escape_pressed(self):
"""Return True if the escape key is pressed."""
return self._is_escape_pressed
@property
def pressed_keys(self):
"""Return a sorted list of the pressed keys."""
return tuple(sorted(self._pressed_keys))
def _handle_key_event(self, symbol, is_press):
"""
Handle a key event.
Args:
symbol: the symbol in the event
is_press: whether the event is a press or release
Returns:
None
"""
# remap the key to the expected domain
symbol = KEY_MAP.get(symbol, symbol)
# check if the symbol is the escape key
if symbol == key.ESCAPE:
self._is_escape_pressed = is_press
return
# make sure the symbol is relevant
if self.relevant_keys is not None and symbol not in self.relevant_keys:
return
# handle the press / release by appending / removing the key to pressed
if is_press:
self._pressed_keys.append(symbol)
else:
self._pressed_keys.remove(symbol)
def on_key_press(self, symbol, modifiers):
"""Respond to a key press on the keyboard."""
self._handle_key_event(symbol, True)
def on_key_release(self, symbol, modifiers):
"""Respond to a key release on the keyboard."""
self._handle_key_event(symbol, False)
def open(self):
"""Open the window."""
# create a window for this image viewer instance
self._window = Window(
caption=self.caption,
height=self.height,
width=self.width,
vsync=False,
resizable=True,
)
# add keyboard event monitors if enabled
if self.monitor_keyboard:
self._window.event(self.on_key_press)
self._window.event(self.on_key_release)
self._window.set_exclusive_keyboard()
def close(self):
"""Close the window."""
if self.is_open:
self._window.close()
self._window = None
def show(self, frame):
"""
Show an array of pixels on the window.
Args:
frame (numpy.ndarray): the frame to show on the window
Returns:
None
"""
# check that the frame has the correct dimensions
if len(frame.shape) != 3:
raise ValueError('frame should have shape with only 3 dimensions')
# open the window if it isn't open already
if not self.is_open:
self.open()
# prepare the window for the next frame
self._window.clear()
self._window.switch_to()
self._window.dispatch_events()
# create an image data object
image = ImageData(frame.shape[1],
frame.shape[0],
'RGB',
frame.tobytes(),
pitch=frame.shape[1] * -3)
# send the image to the window
image.blit(0, 0, width=self._window.width, height=self._window.height)
self._window.flip()
