def __init__(self,
et,
timeline,
downscale=1,
stim_type='calibration_horizontal'):
self.downscale = downscale
self.et = et
self.timeline = timeline
app.use_app('pyglet')
app.Canvas.__init__(self, keys='interactive', size=(1280, 720))
self.fullscreen = True
self.width, self.height = self.physical_size
print('window size : ', self.physical_size)
self.stimulation = Stimulation(self.width // downscale,
self.height // downscale,
stim_type=stim_type)
self.program = gloo.Program(vertex, fragment, count=4)
self.program['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.program['texcoord'] = [(1, 1), (1, 0), (0, 1), (0, 0)]
self.program['texture'] = (255 * np.random.rand(
self.height // downscale, self.width // downscale, 3)).astype(
np.uint8)
gloo.set_viewport(0, 0, self.width, self.height)
self._timer = app.Timer('auto', connect=self.on_timer, start=True)
self.start = time.time()
self.stims_X_t = []
self.eye_x_t = []
self.native.set_mouse_visible(False)
self.show()
def start_qt_app():
"""Start a Qt application if necessary.
If a new Qt application is created, this function returns it.
If no new application is created, the function returns None.
"""
# Only start a Qt application if there is no
# IPython event loop integration.
if not _check_qt():
return
global _APP
if _try_enable_ipython_qt():
return
try:
from vispy import app
app.use_app("pyqt4")
except ImportError:
pass
if QtGui.QApplication.instance():
_APP = QtGui.QApplication.instance()
return
if _APP:
return
_APP = QtGui.QApplication(sys.argv)
return _APP
def init_canvas(self):
if self.verbose == 1:
print('init_canvas')
app.use_app('ipynb_webgl')
ca = vispy.scene.SceneCanvas(keys='interactive', show=True,size=(self.canvas_width,self.canvas_height),bgcolor=[1,1,1])
ca.show()
self.canvas = ca
view = ca.central_widget.add_view()
self.text = visuals.Text(anchor_x='right')
view.add(self.text)
self.label_texts = visuals.Text(anchor_x='right')
view.add(self.label_texts)
self.camera = CustomPanZoomCamera([self.text,self.label_texts])
view.camera = self.camera
axis = visuals.Axis(parent=view.scene)
self.view = view
self.line = visuals.Line()
self.line.set_data(pos=np.array([[0,0,0]]),color=np.array([[0,0,0,0]]))
self.line.order = 1
self.view.add(self.line)
self.mesh = visuals.Mesh()
self.mesh.order = 0
self.view.add(self.mesh)
app.run()
def start_qt_app():
"""Start a Qt application if necessary.
If a new Qt application is created, this function returns it.
If no new application is created, the function returns None.
"""
# Only start a Qt application if there is no
# IPython event loop integration.
if not _check_qt():
return
global _APP
if _try_enable_ipython_qt():
return
try:
from vispy import app
app.use_app("pyqt4")
except ImportError:
pass
if QtGui.QApplication.instance():
_APP = QtGui.QApplication.instance()
return
if _APP:
return
_APP = QtGui.QApplication(sys.argv)
return _APP
def set_vispy_env():
if sys.platform == 'win32':
# app.use_app('PySide6')
app.use_app('glfw')
gloo.gl.use_gl('gl2')
elif sys.platform == 'linux':
app.use_app('glfw')
gloo.gl.use_gl('gl2')
def __init__(self, parent, master):
'''
In der __init__ Methode wird gloo konfiguriert und der pyqt Kontext festgelegt. Des Weiteren werden alle
self.(...) Variablen und der Timer (siehe on_timer) initiiert.
Parameter: parent wird benoetigt zur Festsetzung des Kontextes
master wird zu Interaktion mit der GUI benötigt (z.B. Errors)
Rückgabewerte: -
'''
print('[* Canvas: initializing *]')
app.use_app(backend_name='pyqt4', call_reuse=True)
app.Canvas.__init__(self,
size=(1465, 850),
title='GraphicMolecule Vizualizer',
keys='interactive',
parent=parent)
gloo.set_state(clear_color=(0.1, 0.14, 0.23, 1.00),
depth_test=True,
blend=True,
blend_func=('src_alpha', 'one_minus_src_alpha'))
gloo.wrappers.set_depth_range(near=0.9, far=1)
#initializing all self._____ variables
self._master = master
self._molName = ''
self._molecule = None
self._programs = []
self._decreaseDrawHorizon = False
self._increaseDrawHorizon = False
self._drawHorizon = 0
self._rotSpeed = 0
self._zoom = -7
self._rotation = 0
self._rotationVec = [0, 0, 0]
self._atomSizes = 0
self._atomColors = (0, 0, 0)
self._bondSize = 0
self._bondColor = (0, 0, 0)
self._atomDT = ''
self._bondDT = ''
#als observer anmelden
self._master.registerObserver(self)
self.timer = app.Timer('auto', self.on_timer, start=True)
def main():
if (args.no_audio):
State.do_init(audio=False) # initialize the state objects/threads
else:
State.do_init(audio=True) # initialize the state objects/threads
app.use_app(backend_name='PyGlet')
c = Renderer()
c.show()
if (args.full): c.fullscreen = True # fullscreen mode
c.app.run()
State.destroy()
Logger.warn('Exiting VisAR')
def __init__(self, retina):
app.use_app('pyglet')
self.retina = retina
app.Canvas.__init__(self, keys='interactive', fullscreen=True, size=(1280, 960))#
self.program = gloo.Program(vertex, fragment, count=4)
self.program['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.program['texcoord'] = [(1, 1), (1, 0), (0, 1), (0, 0)]
self.program['texture'] = np.zeros((self.retina.h, self.retina.w, 3)).astype(np.uint8)
width, height = self.physical_size
gloo.set_viewport(0, 0, width, height)
self._timer = app.Timer('auto', connect=self.on_timer, start=True)
self.start = time.time()
self.show()
def main():
if args.no_audio:
State.do_init(audio=False) # initialize the state objects/threads
else:
State.do_init(audio=True) # initialize the state objects/threads
app.use_app(backend_name="PyGlet")
c = Renderer()
c.show()
if args.full:
c.fullscreen = True # fullscreen mode
c.app.run()
State.destroy()
Logger.warn("Exiting VisAR")
def __init__(self, plot_mode: str = 'windowed'):
app.use_app('PySide2')
app.Canvas.__init__(self,
title='Use your wheel to zoom!',
keys='interactive',
app='PySide2')
gloo.set_viewport(0, 0, *self.physical_size)
gloo.set_state(clear_color='black',
blend=True,
blend_func=('src_alpha', 'one_minus_src_alpha'))
self.plot_interact_flag = True
self.is_initialized = False
self.y = None
self.plot_mode = plot_mode
self.last_plotted_column = -1
def test_context_properties():
"""Test setting context properties"""
a = use_app()
if a.backend_name.lower() == 'pyglet':
return # cannot set more than once on Pyglet
# stereo, double buffer won't work on every sys
configs = [dict(samples=4), dict(stencil_size=8),
dict(samples=4, stencil_size=8)]
if a.backend_name.lower() != 'glfw': # glfw *always* double-buffers
configs.append(dict(double_buffer=False, samples=4))
configs.append(dict(double_buffer=False))
else:
assert_raises(RuntimeError, Canvas, app=a,
config=dict(double_buffer=False))
if a.backend_name.lower() == 'sdl2' and os.getenv('TRAVIS') == 'true':
raise SkipTest('Travis SDL cannot set context')
for config in configs:
n_items = len(config)
with Canvas(config=config):
if 'true' in (os.getenv('TRAVIS', ''),
os.getenv('APPVEYOR', '').lower()):
# Travis and Appveyor cannot handle obtaining these values
props = config
else:
props = get_gl_configuration()
assert_equal(len(config), n_items)
for key, val in config.items():
# XXX knownfail for windows samples, and wx (all platforms)
if key == 'samples':
iswx = a.backend_name.lower() == 'wx'
if not (sys.platform.startswith('win') or iswx):
assert_equal(val, props[key], key)
assert_raises(TypeError, Canvas, config='foo')
assert_raises(KeyError, Canvas, config=dict(foo=True))
assert_raises(TypeError, Canvas, config=dict(double_buffer='foo'))
def test_context_properties():
"""Test setting context properties"""
a = use_app()
if a.backend_name.lower() == 'pyglet':
return # cannot set more than once on Pyglet
# stereo, double buffer won't work on every sys
contexts = [dict(samples=4), dict(stencil_size=8),
dict(samples=4, stencil_size=8)]
if a.backend_name.lower() != 'glfw': # glfw *always* double-buffers
contexts.append(dict(double_buffer=False, samples=4))
contexts.append(dict(double_buffer=False))
else:
assert_raises(RuntimeError, Canvas, app=a,
context=dict(double_buffer=False))
if a.backend_name.lower() == 'sdl2' and os.getenv('TRAVIS') == 'true':
raise SkipTest('Travis SDL cannot set context')
for context in contexts:
n_items = len(context)
with Canvas(context=context):
if 'true' in (os.getenv('TRAVIS', ''),
os.getenv('APPVEYOR', '').lower()):
# Travis and Appveyor cannot handle obtaining these values
props = context
else:
props = get_gl_configuration()
assert_equal(len(context), n_items)
for key, val in context.items():
# XXX knownfail for windows samples, and wx (all platforms)
if key == 'samples':
iswx = a.backend_name.lower() == 'wx'
if not (sys.platform.startswith('win') or iswx):
assert_equal(val, props[key], key)
assert_raises(TypeError, Canvas, context='foo')
assert_raises(KeyError, Canvas, context=dict(foo=True))
assert_raises(TypeError, Canvas, context=dict(double_buffer='foo'))
def __init__(self, retina):
app.use_app('pyglet')
self.retina = retina
app.Canvas.__init__(
self, #title=retina.model['title'],
keys='interactive',
fullscreen=True,
size=(1280, 960)) #
self.program = gloo.Program(vertex, fragment, count=4)
self.program['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.program['texcoord'] = [(1, 1), (1, 0), (0, 1), (0, 0)]
self.program['texture'] = np.zeros(
(int(self.retina.h), int(self.retina.w), 3)).astype(np.uint8)
width, height = self.physical_size
gloo.set_viewport(0, 0, width, height)
self._timer = app.Timer('auto', connect=self.on_timer, start=True)
self.start = time.time()
self.show()
self.verb = False
def _load_webgl_backend(ipython):
""" Load the webgl backend for the IPython notebook"""
from vispy import app
app_instance = app.use_app("ipynb_webgl")
if app_instance.backend_name == "ipynb_webgl":
ipython.write("Vispy IPython module has loaded successfully")
else:
# TODO: Improve this error message
ipython.write_err("Unable to load webgl backend of Vispy")
def test_run():
"""Test app running"""
a = use_app()
if a.backend_name.lower() == 'glut':
raise SkipTest('cannot test running glut') # knownfail
for _ in range(2):
with Canvas(size=(100, 100), show=True, title='run') as c:
@c.events.draw.connect
def draw(event):
print(event) # test event __repr__
c.app.quit()
c.update()
c.app.run()
c.app.quit() # make sure it doesn't break if a user quits twice
def test_run():
"""Test app running"""
a = use_app()
if a.backend_name.lower() == 'glut':
raise SkipTest('cannot test running glut') # knownfail
for _ in range(2):
with Canvas(size=(100, 100), show=True, title='run') as c:
@c.events.draw.connect
def draw(event):
print(event) # test event __repr__
c.app.quit()
c.update()
c.app.run()
c.app.quit() # make sure it doesn't break if a user quits twice
def __init__(self, bgcolor, size, dpi, decorate, **kwargs):
self._entered = False
self._wanted_vp = None
if decorate is None:
# deal with GLFW's problems
from vispy.app import use_app
app = use_app()
if _bad_glfw_decorate(app):
decorate = True
else:
decorate = False
SceneCanvas.__init__(self, bgcolor=bgcolor, size=size,
dpi=dpi, decorate=decorate,
**kwargs)
def __init__(self, et, timeline, downscale=1, stim_type='calibration_horizontal'):
self.downscale = downscale
self.et = et
self.timeline = timeline
img0 = np.zeros((self.window_h, self.window_w, 3)).astype(np.uint8)
app.use_app('pyglet')
app.Canvas.__init__(self, keys='interactive', size=(1280, 720))
self.fullscreen = True
self.width, self.height = self.physical_size
print ('window size : ', self.physical_size)
self.stimulation = Stimulation(self.width//downscale, self.height//downscale, stim_type=stim_type)
self.program = gloo.Program(vertex, fragment, count=4)
self.program['position'] = [(-1, -1), (-1, +1), (+1, -1), (+1, +1)]
self.program['texcoord'] = [(1, 1), (1, 0), (0, 1), (0, 0)]
self.program['texture'] = np.zeros((self.height//downscale, self.width//downscale, 3)).astype(np.uint8)
gloo.set_viewport(0, 0, self.width, self.height)
self._timer = app.Timer('auto', connect=self.on_timer, start=True)
self.start = time.time()
self.stims_X_t = []
self.native.set_mouse_visible(False)
self.show()
def __init__(self, _interval, **kwargs):
# DONT EVER REMOVE THIS
# NOTE: GLFW has to be initialized, otherwise canvas positioning is not going to work properly
glfw.init()
# DONT EVER REMOVE THIS
# Set canvas init arguments
backend_kwargs = {}
canvas_kwargs = {
'app': app.use_app(),
'title': 'vxPy visual stimulus display',
'position': (64, 64),
'size': (256, 256),
'resizable': True,
'always_on_top': True,
'vsync': True,
'decorate': False,
'autoswap': False
}
# Overwrite canvas arguments
for key in list(kwargs.keys()):
if key in canvas_kwargs:
canvas_kwargs[key] = kwargs.pop(key)
# Call parent init
app.Canvas.__init__(self,
**canvas_kwargs,
backend_kwargs=backend_kwargs)
self.current_visual: vxvisual.AbstractVisual = None
self.t: float = time.perf_counter()
self.new_t: float = time.perf_counter()
gloo.set_clear_color((0.0, 0.0, 0.0, 1.0))
self.new_frame_drawn = False
# Update size and position once
self.update_dimensions()
# Show
self.show()
# Clear after show
self.clear()
def __init__(self, vertex_shader, fragment_shader_template, functions,
*args, **kwargs):
super().__init__(*args, **kwargs)
self.vertex_shader = vertex_shader
self.fragment_shader_template = fragment_shader_template
self.functions = functions
self.function_index = 0
self.program = Program(self.vertex_shader, self.fragment_shader)
self.program['position'] = [(-1.0, -1.0), (-1.0, 1.0), (1.0, 1.0),
(-1.0, -1.0), (1.0, 1.0), (1.0, -1.0)]
self.program['resolution'] = self.size
self.center = array([0.0, 0.0])
self.program['center'] = array(
[*unpack_double(self.center[0]), *unpack_double(self.center[1])])
self.center_min, self.center_max = array([-10.0,
-10.0]), array([10.0, 10.0])
self.scale = 2.5
self.program['scale'] = unpack_double(self.scale)
self.scale_min, self.scale_max = 10.0**-10.0, 10.0**2.0
self.line = LinePlotVisual(array([[-10, -10]]), color='white')
self.position_text = TextVisual('',
color='white',
font_size=10,
anchor_x='right',
anchor_y='top')
self.iterations_text = TextVisual('',
color='white',
font_size=10,
anchor_x='left',
anchor_y='top')
self.info_text = TextVisual(self.function_info,
pos=(5, 5),
color='white',
font_size=10,
anchor_x='left',
anchor_y='bottom')
if use_app().backend_name == 'PyQt5':
self._backend.leaveEvent = self.on_mouse_exit
self.timer = Timer(connect=self.update, start=True)
self.show()
def test_fs():
"""Test fullscreen support"""
a = use_app()
if not a.backend_module.capability['fullscreen']:
return
assert_raises(TypeError, Canvas, fullscreen='foo')
if (a.backend_name.lower() == 'glfw' or
(a.backend_name.lower() == 'sdl2' and sys.platform == 'darwin')):
raise SkipTest('Backend takes over screen')
with use_log_level('warning', record=True, print_msg=False) as l:
with Canvas(fullscreen=False) as c:
assert_equal(c.fullscreen, False)
c.fullscreen = True
assert_equal(c.fullscreen, True)
assert_equal(len(l), 0)
with use_log_level('warning', record=True, print_msg=False):
# some backends print a warning b/c fullscreen can't be specified
with Canvas(fullscreen=0) as c:
assert_equal(c.fullscreen, True)
def test_fs():
"""Test fullscreen support"""
a = use_app()
if not a.backend_module.capability['fullscreen']:
return
assert_raises(TypeError, Canvas, fullscreen='foo')
if (a.backend_name.lower() == 'glfw' or
(a.backend_name.lower() == 'sdl2' and sys.platform == 'darwin')):
raise SkipTest('Backend takes over screen')
with use_log_level('warning', record=True, print_msg=False) as l:
with Canvas(fullscreen=False) as c:
assert_equal(c.fullscreen, False)
c.fullscreen = True
assert_equal(c.fullscreen, True)
assert_equal(len(l), 0)
with use_log_level('warning', record=True, print_msg=False):
# some backends print a warning b/c fullscreen can't be specified
with Canvas(fullscreen=0) as c:
assert_equal(c.fullscreen, True)
def __init__(self, connect=None, start=True, app=None):
self.events = EmitterGroup(source=self,
start=Event,
stop=Event,
midiIn=Event)
if app is None:
self._app = use_app(call_reuse=False)
elif isinstance(app, Application):
self._app = app
elif isinstance(app, string_types):
self._app = Application(app)
else:
raise ValueError('Invalid value for app %r' % app)
self._running = False
if connect is not None:
self.connect(connect)
if start:
self.start()
def __init__(self, **kwargs):
vxprocess.AbstractProcess.__init__(self, **kwargs)
self.app = app.use_app()
self.visual_is_displayed = False
self.enable_idle_timeout = False
self.times = []
# Create canvas
_interval = 1. / config.CONF_DISPLAY_FPS
self.canvas = Canvas(_interval)
# Process vispy events once too avoid frozen screen at start
app.process_events()
# Run event loop
self.enable_idle_timeout = False
self.run(interval=_interval)
def test_context_properties():
"""Test setting context properties"""
a = use_app()
if a.backend_name.lower() == 'pyglet':
return # cannot set more than once on Pyglet
if a.backend_name.lower() == 'osmesa':
return # cannot set config on OSMesa
# stereo, double buffer won't work on every sys
configs = [dict(samples=4), dict(stencil_size=8),
dict(samples=4, stencil_size=8)]
if a.backend_name.lower() != 'glfw': # glfw *always* double-buffers
configs.append(dict(double_buffer=False, samples=4))
configs.append(dict(double_buffer=False))
else:
assert_raises(RuntimeError, Canvas, app=a,
config=dict(double_buffer=False))
if a.backend_name.lower() == 'sdl2' and IS_CI:
raise SkipTest('Travis SDL cannot set context')
for config in configs:
n_items = len(config)
with Canvas(config=config):
if IS_CI:
# Travis and Appveyor cannot handle obtaining these values
props = config
else:
props = get_gl_configuration()
assert len(config) == n_items
for key, val in config.items():
# XXX knownfail for windows samples, and wx/tkinter (all platforms)
if key == 'samples':
will_fail_backend = a.backend_name.lower() in ('wx', 'tkinter')
if not (sys.platform.startswith('win') or will_fail_backend):
assert val == props[key], key
assert_raises(TypeError, Canvas, config='foo')
assert_raises(KeyError, Canvas, config=dict(foo=True))
assert_raises(TypeError, Canvas, config=dict(double_buffer='foo'))
def _handle_vispy_key_press_events(self, event: KeyEvent) -> None:
"""Router: Calls AppCommands functions based on the event that's given."""
key_commands = {
'1': lambda: self.select_channel(1),
'2': lambda: self.select_channel(2),
'3': lambda: self.select_channel(3),
'4': lambda: self.select_channel(4),
'W': lambda: self.move_section(z=30),
'S': lambda: self.move_section(z=-30),
'A': lambda: self.move_section(x=-30),
'D': lambda: self.move_section(x=30),
'Q': lambda: self.move_section(y=-30),
'E': lambda: self.move_section(y=30),
'I': lambda: self.move_section(rz=3),
'K': lambda: self.move_section(rz=-3),
'J': lambda: self.move_section(rx=-3),
'L': lambda: self.move_section(rx=3),
'U': lambda: self.move_section(ry=-3),
'O': lambda: self.move_section(ry=3),
'Escape': use_app().quit,
}
if command := key_commands.get(event.key.name):
command()
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
A GLSL sandbox application based on the spinning cube. Requires PySide
or PyQt4.
"""
import numpy as np
from vispy import app, gloo
from vispy.io import read_mesh, load_data_file, load_crate
from vispy.util.transforms import perspective, translate, rotate
# Force using qt and take QtCore+QtGui from backend module
try:
app_object = app.use_app('pyqt4')
except Exception:
app_object = app.use_app('pyside')
QtCore = app_object.backend_module.QtCore,
QtGui = app_object.backend_module.QtGui
VERT_CODE = """
uniform mat4 u_model;
uniform mat4 u_view;
uniform mat4 u_projection;
attribute vec3 a_position;
attribute vec2 a_texcoord;
varying vec2 v_texcoord;
void main()
from __future__ import division
import numpy as np
from vispy import app
from vispy import gloo
from vispy.gloo.util import _screenshot
import OpenGL.GL as gl
import os
homeDir = os.path.dirname(__file__)
app.use_app("glfw")
def makeTexture(dataArray):
'''
Reads an image file, converts from 0-255 to 0-1, and loads into a 2D texture.
Args:
* dataArray (str)
returns gloo.Texture2D
'''
scaledData = dataArray / dataArray.max()
tex = gloo.Texture2D(scaledData.astype(np.float32))
return tex
def getShader(shaderPath):
'''
Loads a glsl shader as a string.
"""
Custom Qt widgets that serve as native objects that the public-facing elements
wrap.
"""
# set vispy to use same backend as qtpy
from qtpy import API_NAME
from vispy import app
app.use_app(API_NAME)
del app
from qtpy.QtWidgets import (
QMainWindow,
QWidget,
QHBoxLayout,
QLabel,
QAction,
QShortcut,
)
from qtpy.QtGui import QKeySequence
from ..util.theme import template
class Window:
"""Application window that contains the menu bar and viewer.
Parameters
----------
qt_viewer : QtViewer
Contained viewer widget.
import logging
import qtpy
from vispy import app
# set vispy application to the appropriate qt backend
app.use_app(qtpy.API_NAME)
del app
# set vispy logger to show warning and errors only
vispy_logger = logging.getLogger('vispy')
vispy_logger.setLevel(logging.WARNING)
from .camera import VispyCamera
from .canvas import VispyCanvas
from .overlays.axes import VispyAxesOverlay
from .overlays.interaction_box import VispyInteractionBox
from .overlays.scale_bar import VispyScaleBarOverlay
from .overlays.text import VispyTextOverlay
from .utils.quaternion import quaternion2euler
from .utils.visual import create_vispy_visual
def test_application():
"""Test application running"""
app = use_app()
print(app) # __repr__ without app
app.create()
wrong = 'glfw' if app.backend_name.lower() != 'glfw' else 'pyqt4'
assert_raises(RuntimeError, use_app, wrong)
app.process_events()
print(app) # test __repr__
assert_raises(ValueError, Canvas, keys='foo')
assert_raises(TypeError, Canvas, keys=dict(escape=1))
assert_raises(ValueError, Canvas, keys=dict(escape='foo')) # not an attr
pos = [0, 0] if app.backend_module.capability['position'] else None
size = (100, 100)
# Use "with" statement so failures don't leave open window
# (and test context manager behavior)
title = 'default'
with Canvas(title=title, size=size, app=app, show=True,
position=pos) as canvas:
context = canvas.context
assert_true(canvas.create_native() is None) # should be done already
assert_is(canvas.app, app)
assert_true(canvas.native)
assert_equal('swap_buffers', canvas.events.draw.callback_refs[-1])
canvas.measure_fps(0.001)
sleep(0.002)
canvas.update()
app.process_events()
assert_true(canvas.fps > 0)
# Other methods
print(canvas) # __repr__
assert_equal(canvas.title, title)
canvas.title = 'you'
with use_log_level('warning', record=True, print_msg=False) as l:
if app.backend_module.capability['position']:
# todo: disable more tests based on capability
canvas.position = pos
canvas.size = size
if 'ipynb_vnc' in canvas.app.backend_name.lower():
assert_true(len(l) >= 1)
else:
assert_true(len(l) == 0)
canvas.connect(on_mouse_move)
assert_raises(ValueError, canvas.connect, _on_mouse_move)
if sys.platform != 'darwin': # XXX knownfail, prob. needs warmup
canvas.show(False)
canvas.show()
app.process_events()
assert_raises(ValueError, canvas.connect, on_nonexist)
# deprecation of "paint"
with use_log_level('info', record=True, print_msg=False) as log:
olderr = sys.stderr
try:
fid = StringIO()
sys.stderr = fid
@canvas.events.paint.connect
def fake(event):
pass
finally:
sys.stderr = olderr
assert_equal(len(log), 1)
assert_in('deprecated', log[0])
# screenshots
gl.glViewport(0, 0, *size)
ss = _screenshot()
assert_array_equal(ss.shape, size + (4,))
assert_equal(len(canvas._backend._vispy_get_geometry()), 4)
if sys.platform != 'win32': # XXX knownfail for windows
assert_array_equal(canvas.size, size)
assert_equal(len(canvas.position), 2) # XXX knawnfail, doesn't "take"
# GLOO: should have an OpenGL context already, so these should work
vert = "void main (void) {gl_Position = pos;}"
frag = "void main (void) {gl_FragColor = pos;}"
program = Program(vert, frag)
assert_raises(RuntimeError, program.glir.flush, context.shared.parser)
vert = "uniform vec4 pos;\nvoid main (void) {gl_Position = pos;}"
frag = "uniform vec4 pos;\nvoid main (void) {gl_FragColor = pos;}"
program = Program(vert, frag)
#uniform = program.uniforms[0]
program['pos'] = [1, 2, 3, 4]
vert = "attribute vec4 pos;\nvoid main (void) {gl_Position = pos;}"
frag = "void main (void) {}"
program = Program(vert, frag)
#attribute = program.attributes[0]
program["pos"] = [1, 2, 3, 4]
# use a real program
program._glir.clear()
vert = ("uniform mat4 u_model;"
"attribute vec2 a_position; attribute vec4 a_color;"
"varying vec4 v_color;"
"void main (void) {v_color = a_color;"
"gl_Position = u_model * vec4(a_position, 0.0, 1.0);"
"v_color = a_color;}")
frag = "void main() {gl_FragColor = vec4(0, 0, 0, 1);}"
n, p = 250, 50
T = np.random.uniform(0, 2 * np.pi, n)
position = np.zeros((n, 2), dtype=np.float32)
position[:, 0] = np.cos(T)
position[:, 1] = np.sin(T)
color = np.ones((n, 4), dtype=np.float32) * (1, 1, 1, 1)
data = np.zeros(n * p, [('a_position', np.float32, 2),
('a_color', np.float32, 4)])
data['a_position'] = np.repeat(position, p, axis=0)
data['a_color'] = np.repeat(color, p, axis=0)
program = Program(vert, frag)
program.bind(VertexBuffer(data))
program['u_model'] = np.eye(4, dtype=np.float32)
# different codepath if no call to activate()
program.draw(gl.GL_POINTS)
subset = IndexBuffer(np.arange(10, dtype=np.uint32))
program.draw(gl.GL_POINTS, subset)
# bad programs
frag_bad = ("varying vec4 v_colors") # no semicolon
program = Program(vert, frag_bad)
assert_raises(RuntimeError, program.glir.flush, context.shared.parser)
frag_bad = None # no fragment code. no main is not always enough
assert_raises(ValueError, Program, vert, frag_bad)
# Timer
timer = Timer(interval=0.001, connect=on_mouse_move, iterations=2,
start=True, app=app)
timer.start()
timer.interval = 0.002
assert_equal(timer.interval, 0.002)
assert_true(timer.running)
sleep(.003)
assert_true(timer.elapsed >= 0.002)
timer.stop()
assert_true(not timer.running)
assert_true(timer.native)
timer.disconnect()
# test that callbacks take reasonable inputs
_test_callbacks(canvas)
# cleanup
canvas.swap_buffers()
canvas.update()
app.process_events()
# put this in even though __exit__ will call it to make sure we don't
# have problems calling it multiple times
canvas.close() # done by context
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
A GLSL sandbox application based on the spinning cube. Requires PySide
or PyQt4.
"""
import numpy as np
from vispy import app, gloo, dataio
from vispy.util.transforms import perspective, translate, rotate
# Force using qt and take QtCore+QtGui from backend module
app_object = app.use_app('pyqt4')
QtCore = app_object.backend_module.QtCore,
QtGui = app_object.backend_module.QtGui
VERT_CODE = """
uniform mat4 u_model;
uniform mat4 u_view;
uniform mat4 u_projection;
attribute vec3 a_position;
attribute vec2 a_texcoord;
varying vec2 v_texcoord;
void main()
{
v_texcoord = a_texcoord;
gl_Position = u_projection * u_view * u_model * vec4(a_position,1.0);
def visualize(z_in, azimuth=25., elevation=30.,
thresholds=[0.94, .89, .75, .5, .25, .1], opacities=[.9, .8, .7, .5, .2, .1],
# thresholds=[0.94, .89, .75], opacities=[.99, .7, .2],
# thresholds=[0.7, .5, .2], opacities=[.95, .5, .2],
fourier_label = {'f_x':'f_x', 'f_y':'f_y', 'f_t':'f_t'},
name=None, ext=ext, do_axis=True, do_grids=False, draw_projections=True,
colorbar=False, f_N=2., f_tN=2., figsize=figsize, **kwargs):
"""
Visualization of the Fourier spectrum by showing 3D contour plots at different thresholds
parameters
----------
z : envelope of the cloud
"""
if not(os.path.isdir(figpath)): os.mkdir(figpath)
z = z_in.copy()
N_X, N_Y, N_frame = z.shape
fx, fy, ft = get_grids(N_X, N_Y, N_frame)
# Normalize the amplitude.
z /= z.max()
from vispy import app, scene
app.use_app('pyglet')
#from vispy.util.transforms import perspective, translate, rotate
from vispy.color import Color
transparent = Color(color='black', alpha=0.)
import colorsys
canvas = scene.SceneCanvas(size=figsize, bgcolor='white', dpi=450)
view = canvas.central_widget.add_view()
vol_data = np.rollaxis(np.rollaxis(z, 1), 2)
# volume = scene.visuals.Volume(vol_data, parent=view.scene)#frame)
center = scene.transforms.STTransform(translate=( -N_X/2, -N_Y/2, -N_frame/2))
# volume.transform = center
# volume.cmap = 'blues'
if draw_projections:
from vispy.color import Colormap
cm = Colormap([(1.0, 1.0, 1.0, 1.0), 'k'])
opts = {'parent':view.scene, 'cmap':cm, 'clim':(0., 1.)}
energy_xy = np.rot90(np.max(z, axis=2)[:, ::-1], 3)
fourier_xy = scene.visuals.Image(np.rot90(energy_xy), **opts)
tr_xy = scene.transforms.MatrixTransform()
tr_xy.rotate(90, (0, 0, 1))
tr_xy.translate((N_X/2, -N_Y/2, -N_frame/2))
fourier_xy.transform = tr_xy
energy_xt = np.rot90(np.max(z, axis=1)[:, ::-1], 3)
fourier_xt = scene.visuals.Image(energy_xt, **opts)
tr_xt = scene.transforms.MatrixTransform()
tr_xt.rotate(90, (1, 0, 0))
tr_xt.translate((-N_X/2, N_Y/2, -N_frame/2))
fourier_xt.transform = tr_xt
energy_yt = np.max(z, axis=0)[:, ::-1]
fourier_yt = scene.visuals.Image(energy_yt, **opts)
tr_yt = scene.transforms.MatrixTransform()
tr_yt.rotate(90, (0, 1, 0))
tr_yt.translate((-N_X/2, -N_Y/2, N_frame/2))
fourier_yt.transform = tr_yt
# Generate iso-surfaces at different energy levels
surfaces = []
for i_, (threshold, opacity) in enumerate(zip(thresholds, opacities)):
surfaces.append(scene.visuals.Isosurface(z, level=threshold,
# color=Color(np.array(colorsys.hsv_to_rgb(1.*i_/len(thresholds), 1., 1.)), alpha=opacity),
color=Color(np.array(colorsys.hsv_to_rgb(.66, 1., 1.)), alpha=opacity),
shading='smooth', parent=view.scene)
)
surfaces[-1].transform = center
# Draw a sphere at the origin
axis = scene.visuals.XYZAxis(parent=view.scene)
for p in ([1, 1, 1, -1, 1, 1], [1, 1, -1, -1, 1, -1], [1, -1, 1, -1, -1, 1],[1, -1, -1, -1, -1, -1],
[1, 1, 1, 1, -1, 1], [-1, 1, 1, -1, -1, 1], [1, 1, -1, 1, -1, -1], [-1, 1, -1, -1, -1, -1],
[1, 1, 1, 1, 1, -1], [-1, 1, 1, -1, 1, -1], [1, -1, 1, 1, -1, -1], [-1, -1, 1, -1, -1, -1]):
line = scene.visuals.Line(pos=np.array([[p[0]*N_X/2, p[1]*N_Y/2, p[2]*N_frame/2], [p[3]*N_X/2, p[4]*N_Y/2, p[5]*N_frame/2]]), color='black', parent=view.scene)
axisX = scene.visuals.Line(pos=np.array([[0, -N_Y/2, 0], [0, N_Y/2, 0]]), color='red', parent=view.scene)
axisY = scene.visuals.Line(pos=np.array([[-N_X/2, 0, 0], [N_X/2, 0, 0]]), color='green', parent=view.scene)
axisZ = scene.visuals.Line(pos=np.array([[0, 0, -N_frame/2], [0, 0, N_frame/2]]), color='blue', parent=view.scene)
if do_axis:
t = {}
for text in ['f_x', 'f_y', 'f_t']:
t[text] = scene.visuals.Text(fourier_label[text], parent=canvas.scene, face='Helvetica', color='black')
t[text].font_size = 8
t['f_x'].pos = canvas.size[0] // 3, canvas.size[1] - canvas.size[1] // 8
t['f_y'].pos = canvas.size[0] - canvas.size[0] // 8, canvas.size[1] - canvas.size[1] // 6
t['f_t'].pos = canvas.size[0] // 8, canvas.size[1] // 2
cam = scene.TurntableCamera(elevation=elevation, azimuth=azimuth, up='z')
cam.fov = 48
cam.scale_factor = N_X * 1.8
if do_axis: margin = 1.35
else: margin = 1
cam.set_range((-N_X/2*margin, N_X/2/margin), (-N_Y/2*margin, N_Y/2/margin), (-N_frame/2*margin, N_frame/2/margin))
view.camera = cam
im = canvas.render(size=figsize)
app.quit()
if not(name is None):
import vispy.io as io
io.write_png(name + ext, im)
else:
return im
def test_multiple_canvases():
"""Testing multiple canvases"""
n_check = 3
app = use_app()
with Canvas(app=app, size=_win_size, title='same_0') as c0:
with Canvas(app=app, size=_win_size, title='same_1') as c1:
ct = [0, 0]
@c0.events.draw.connect
def draw0(event):
ct[0] += 1
c0.update()
@c1.events.draw.connect # noqa, analysis:ignore
def draw1(event):
ct[1] += 1
c1.update()
c0.show() # ensure visible
c1.show()
c0.update() # force first draw
c1.update()
timeout = time() + 2.0
while (ct[0] < n_check or ct[1] < n_check) and time() < timeout:
app.process_events()
print((ct, n_check))
assert n_check <= ct[0] <= n_check + 2 # be a bit lenient
assert n_check <= ct[1] <= n_check + 2
# check timer
global timer_ran
timer_ran = False
def on_timer(_):
global timer_ran
timer_ran = True
t = Timer(0.1, app=app, connect=on_timer, iterations=1, # noqa
start=True)
app.process_events()
sleep(0.5) # long for slow systems
app.process_events()
app.process_events()
assert timer_ran
if app.backend_name.lower() == 'wx':
raise SkipTest('wx fails test #2') # XXX TODO Fix this
kwargs = dict(app=app, autoswap=False, size=_win_size,
show=True)
with Canvas(title='0', **kwargs) as c0:
with Canvas(title='1', **kwargs) as c1:
bgcolors = [None] * 2
@c0.events.draw.connect
def draw00(event):
print(' {0:7}: {1}'.format('0', bgcolors[0]))
if bgcolors[0] is not None:
gl.glViewport(0, 0, *list(_win_size))
gl.glClearColor(*bgcolors[0])
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glFinish()
@c1.events.draw.connect
def draw11(event):
print(' {0:7}: {1}'.format('1', bgcolors[1]))
if bgcolors[1] is not None:
gl.glViewport(0, 0, *list(_win_size))
gl.glClearColor(*bgcolors[1])
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glFinish()
for ci, canvas in enumerate((c0, c1)):
print('draw %s' % canvas.title)
bgcolors[ci] = [0.5, 0.5, 0.5, 1.0]
_update_process_check(canvas, 127)
for ci, canvas in enumerate((c0, c1)):
print('test')
_update_process_check(canvas, 127, draw=False)
bgcolors[ci] = [1., 1., 1., 1.]
_update_process_check(canvas, 255)
bgcolors[ci] = [0.25, 0.25, 0.25, 0.25]
_update_process_check(canvas, 64)
"""
Custom Qt widgets that serve as native objects that the public-facing elements
wrap.
"""
from PyQt5.QtWidgets import QApplication as QtApplication
from ._viewer import QtViewer
from ._layerPanel import QtLayerPanel
from ._controls import QtControls
from ._imageLayer import QtImageLayer
from ._markersLayer import QtMarkersLayer
from vispy import app
app.use_app('pyqt5')
del app
'''
This code is modified from
https://github.com/wadimkehl/ssd-6d.git
'''
import numpy as np
from vispy import app, gloo
import OpenGL.GL as gl
app.use_app('pyglet') # Set backend
_vertex_code_colored = """
uniform mat4 u_mv;
uniform mat4 u_mvp;
uniform vec3 u_light_eye_pos;
attribute vec3 a_position;
attribute vec3 a_color;
varying vec3 v_color;
varying vec3 v_eye_pos;
varying vec3 v_L;
void main() {
gl_Position = u_mvp * vec4(a_position, 1.0);
v_color = a_color;
v_eye_pos = (u_mv * vec4(a_position, 1.0)).xyz; // Vertex position in eye coordinates
v_L = normalize(u_light_eye_pos - v_eye_pos); // Vector to the light
}
"""
def main(args=None):
p = ParserCreator()
if args is None:
args = sys.argv[1:]
elif isinstance(args, string_types):
args = args.split(' ')
args = p.parse(args)
if args is None:
return
if args.profiler or args.line_profiler:
from phy.utils.testing import _enable_profiler, _profile
prof = _enable_profiler(args.line_profiler)
else:
prof = None
import phy
if args.debug:
phy.debug()
# Hide the traceback.
if args.hide_traceback:
def exception_handler(exception_type, exception, traceback):
print("{}: {}".format(exception_type.__name__, exception))
sys.excepthook = exception_handler
# Activate IPython debugger.
if args.pdb:
from IPython.core import ultratb
sys.excepthook = ultratb.FormattedTB(mode='Verbose',
color_scheme='Linux',
call_pdb=1,
)
func = args.func
if func is None:
p.parser.print_help()
return
out = func(args)
if not out:
return
cmd, ns = out
if not cmd:
return
requires_qt = ns.pop('requires_qt', False)
requires_vispy = ns.pop('requires_vispy', False)
# Default variables in namespace.
ns.update(phy=phy, path=args.file)
if 'session' in ns:
ns['model'] = ns['session'].model
# Interactive mode with IPython.
if args.ipython:
print("\nStarting IPython...")
from IPython import start_ipython
args_ipy = ["-i", "-c='{}'".format(cmd)]
if requires_qt or requires_vispy:
# Activate Qt event loop integration with Qt.
args_ipy += ["--gui=qt"]
start_ipython(args_ipy, user_ns=ns)
else:
if not prof:
exec_(cmd, {}, ns)
else:
_profile(prof, cmd, {}, ns)
if requires_qt:
# Launch the Qt app.
from phy.gui import run_qt_app
run_qt_app()
elif requires_vispy:
# Launch the VisPy Qt app.
from vispy.app import use_app, run
use_app('pyqt4')
run()
def _test_module_properties(_module=None):
"""Test application module"""
if _module is None:
app = use_app()
_module = app.backend_module
# Test that the keymap contains all keys supported by vispy.
module_fname = _module.__name__.split('.')[-1]
if module_fname != '_egl': # skip keys for EGL
keymap = _module.KEYMAP
vispy_keys = keymap.values()
for keyname in dir(keys):
if keyname.upper() != keyname:
continue
key = getattr(keys, keyname)
assert_in(key, vispy_keys)
# For Qt backend, we have a common implementation
alt_modname = ''
if module_fname in ('_pyside', '_pyqt4', '_pyqt5'):
alt_modname = _module.__name__.rsplit('.', 1)[0] + '._qt'
# Test that all _vispy_x methods are there.
exceptions = (
'_vispy_get_native_canvas',
'_vispy_get_native_timer',
'_vispy_get_native_app',
'_vispy_reuse',
'_vispy_mouse_move',
'_vispy_mouse_press',
'_vispy_mouse_release',
'_vispy_mouse_double_click',
'_vispy_detect_double_click',
'_vispy_get_geometry',
'_vispy_get_physical_size',
'_process_backend_kwargs') # defined in base class
class KlassRef(vispy.app.base.BaseCanvasBackend):
def __init__(self, *args, **kwargs):
pass # Do not call the base class, since it will check for Canvas
Klass = _module.CanvasBackend
base = KlassRef()
for key in dir(KlassRef):
if not key.startswith('__'):
method = getattr(Klass, key)
if key not in exceptions:
print(key)
args = [None] * (len(getargspec(method).args) - 1)
assert_raises(NotImplementedError, getattr(base, key), *args)
if hasattr(method, '__module__'):
mod_str = method.__module__ # Py3k
else:
mod_str = method.im_func.__module__
assert_in(mod_str, (_module.__name__, alt_modname),
"Method %s.%s not defined in %s"
% (Klass, key, _module.__name__))
Klass = _module.TimerBackend
KlassRef = vispy.app.timer.TimerBackend
for key in dir(KlassRef):
if not key.startswith('__'):
method = getattr(Klass, key)
if key not in exceptions:
if hasattr(method, '__module__'):
# Py3k
assert_in(method.__module__,
(_module.__name__, alt_modname))
else:
t = method.im_func.__module__ == _module.__name__
assert t
Klass = _module.ApplicationBackend
KlassRef = vispy.app.application.ApplicationBackend
for key in dir(KlassRef):
if not key.startswith('__'):
method = getattr(Klass, key)
if key not in exceptions:
if hasattr(method, '__module__'):
# Py3k
assert_in(method.__module__,
(_module.__name__, alt_modname))
else:
t = method.im_func.__module__ == _module.__name__
assert t
# Test that all events seem to be emitted.
# Get text
fname = _module.__file__.rstrip('c') # "strip" will break windows!
with open(fname, 'rb') as fid:
text = fid.read().decode('utf-8')
canvas = vispy.app.Canvas(create_native=False, app=DummyApplication())
# Stylus and touch are ignored because they are not yet implemented.
# Mouse events are emitted from the CanvasBackend base class.
ignore = set(['stylus', 'touch', 'mouse_press', 'paint',
'mouse_move', 'mouse_release', 'mouse_double_click',
'detect_double_click', 'close'])
if module_fname == '_egl':
ignore += ['key_release', 'key_press']
eventNames = set(canvas.events._emitters.keys()) - ignore
if not alt_modname: # Only check for non-proxy modules
for name in eventNames:
assert_in('events.%s' % name, text,
'events.%s does not appear in %s' % (name, fname))
# -*- coding: utf-8 -*-
"""
A GLSL sandbox application based on the spinning cube. Requires PySide
or PyQt4.
"""
from vispy.geometry.generation import create_sphere
import numpy as np
from vispy import app, gloo
from vispy.io import read_mesh, load_data_file, load_crate
from vispy.util.transforms import perspective, translate, rotate
from vispy.color import Color, ColorArray, get_colormap
from vispy.visuals.shaders import ModularProgram, Function
# Force using qt and take QtCore+QtGui from backend module
try:
app_object = app.use_app('pyqt4')
except Exception:
app_object = app.use_app('pyside')
QtCore = app_object.backend_module.QtCore,
QtGui = app_object.backend_module.QtGui
VERT_CODE = """
// Uniforms
// ------------------------------------
uniform mat4 u_model;
uniform mat4 u_view;
uniform mat4 u_projection;
uniform vec4 u_color;
// Attributes
def canvas(qapp):
use_app('pyqt4')
c = BaseCanvas(keys='interactive')
yield c
c.close()
def _test_module_properties(_module=None):
"""Test application module"""
if _module is None:
app = use_app()
_module = app.backend_module
# Test that the keymap contains all keys supported by vispy.
module_fname = _module.__name__.split(".")[-1]
if module_fname != "_egl": # skip keys for EGL
keymap = _module.KEYMAP
vispy_keys = keymap.values()
for keyname in dir(keys):
if keyname.upper() != keyname:
continue
key = getattr(keys, keyname)
assert_in(key, vispy_keys)
# For Qt backend, we have a common implementation
alt_modname = ""
if module_fname in ("_pyside", "_pyqt4"):
alt_modname = _module.__name__.rsplit(".", 1)[0] + "._qt"
# Test that all _vispy_x methods are there.
exceptions = (
"_vispy_init",
"_vispy_get_native_canvas",
"_vispy_get_native_timer",
"_vispy_get_native_app",
"_vispy_mouse_move",
"_vispy_mouse_press",
"_vispy_mouse_release",
"_vispy_get_geometry",
"_process_backend_kwargs",
) # defined in base class
Klass = _module.CanvasBackend
KlassRef = vispy.app.base.BaseCanvasBackend
base = KlassRef(None, None)
for key in dir(KlassRef):
if not key.startswith("__"):
method = getattr(Klass, key)
if key not in exceptions:
print(key)
args = [None] * (len(getargspec(method).args) - 1)
assert_raises(NotImplementedError, getattr(base, key), *args)
if hasattr(method, "__module__"):
mod_str = method.__module__ # Py3k
else:
mod_str = method.im_func.__module__
assert_in(
mod_str,
(_module.__name__, alt_modname),
"Method %s.%s not defined in %s" % (Klass, key, _module.__name__),
)
Klass = _module.TimerBackend
KlassRef = vispy.app.timer.TimerBackend
for key in dir(KlassRef):
if not key.startswith("__"):
method = getattr(Klass, key)
if key not in exceptions:
if hasattr(method, "__module__"):
# Py3k
assert_in(method.__module__, (_module.__name__, alt_modname))
else:
t = method.im_func.__module__ == _module.__name__
assert t
Klass = _module.ApplicationBackend
KlassRef = vispy.app.application.ApplicationBackend
for key in dir(KlassRef):
if not key.startswith("__"):
method = getattr(Klass, key)
if key not in exceptions:
if hasattr(method, "__module__"):
# Py3k
assert_in(method.__module__, (_module.__name__, alt_modname))
else:
t = method.im_func.__module__ == _module.__name__
assert t
# Test that all events seem to be emitted.
# Get text
fname = _module.__file__.rstrip("c") # "strip" will break windows!
with open(fname, "rb") as fid:
text = fid.read().decode("utf-8")
canvas = vispy.app.Canvas(create_native=False, app=DummyApplication())
# Stylus and touch are ignored because they are not yet implemented.
# Mouse events are emitted from the CanvasBackend base class.
ignore = set(["stylus", "touch", "mouse_press", "paint", "mouse_move", "mouse_release", "close"])
if module_fname == "_egl":
ignore += ["key_release", "key_press"]
eventNames = set(canvas.events._emitters.keys()) - ignore
if not alt_modname: # Only check for non-proxy modules
for name in eventNames:
assert_in("events.%s" % name, text, "events.%s does not appear in %s" % (name, fname))
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
A GLSL sandbox application based on the spinning cube. Requires PySide
or PyQt4.
"""
import numpy as np
from vispy import app, gloo
from vispy.io import read_mesh, load_data_file, load_crate
from vispy.util.transforms import perspective, translate, rotate
# Force using qt and take QtCore+QtGui from backend module
try:
app_object = app.use_app("pyqt4")
except Exception:
app_object = app.use_app("pyside")
QtCore = (app_object.backend_module.QtCore,)
QtGui = app_object.backend_module.QtGui
VERT_CODE = """
uniform mat4 u_model;
uniform mat4 u_view;
uniform mat4 u_projection;
attribute vec3 a_position;
attribute vec2 a_texcoord;
varying vec2 v_texcoord;
def test_application():
"""Test application running"""
app = use_app()
print(app) # __repr__ without app
app.create()
wrong = 'glut' if app.backend_name.lower() != 'glut' else 'pyglet'
assert_raises(RuntimeError, use_app, wrong)
app.process_events()
print(app) # test __repr__
assert_raises(ValueError, Canvas, keys='foo')
assert_raises(TypeError, Canvas, keys=dict(escape=1))
assert_raises(ValueError, Canvas, keys=dict(escape='foo')) # not an attr
pos = [0, 0] if app.backend_module.capability['position'] else None
size = (100, 100)
# Use "with" statement so failures don't leave open window
# (and test context manager behavior)
title = 'default'
with Canvas(title=title, size=size, app=app, show=True,
position=pos) as canvas:
assert_true(canvas.create_native() is None) # should be done already
assert_is(canvas.app, app)
assert_true(canvas.native)
assert_equal('swap_buffers', canvas.events.draw.callback_refs[-1])
canvas.measure_fps(0.001)
sleep(0.002)
canvas.update()
app.process_events()
assert_true(canvas.fps > 0)
# Other methods
print(canvas) # __repr__
assert_equal(canvas.title, title)
canvas.title = 'you'
with use_log_level('warning', record=True, print_msg=False) as l:
if app.backend_module.capability['position']:
# todo: disable more tests based on capability
canvas.position = pos
canvas.size = size
if 'ipynb_vnc' in canvas.app.backend_name.lower():
assert_true(len(l) >= 1)
else:
assert_true(len(l) == 0)
canvas.connect(on_mouse_move)
assert_raises(ValueError, canvas.connect, _on_mouse_move)
if sys.platform != 'darwin': # XXX knownfail, prob. needs warmup
canvas.show(False)
canvas.show()
app.process_events()
assert_raises(ValueError, canvas.connect, on_nonexist)
# deprecation of "paint"
with use_log_level('info', record=True, print_msg=False) as log:
olderr = sys.stderr
try:
with open(os.devnull, 'w') as fid:
sys.stderr = fid
@canvas.events.paint.connect
def fake(event):
pass
finally:
sys.stderr = olderr
assert_equal(len(log), 1)
assert_in('deprecated', log[0])
# screenshots
gl.glViewport(0, 0, *size)
ss = _screenshot()
assert_array_equal(ss.shape, size + (4,))
assert_equal(len(canvas._backend._vispy_get_geometry()), 4)
if (app.backend_name.lower() != 'glut' and # XXX knownfail for Almar
sys.platform != 'win32'): # XXX knownfail for windows
assert_array_equal(canvas.size, size)
assert_equal(len(canvas.position), 2) # XXX knawnfail, doesn't "take"
# GLOO: should have an OpenGL context already, so these should work
vert = VertexShader("void main (void) {gl_Position = pos;}")
frag = FragmentShader("void main (void) {gl_FragColor = pos;}")
program = Program(vert, frag)
assert_raises(RuntimeError, program.activate)
vert = VertexShader("uniform vec4 pos;"
"void main (void) {gl_Position = pos;}")
frag = FragmentShader("uniform vec4 pos;"
"void main (void) {gl_FragColor = pos;}")
program = Program(vert, frag)
#uniform = program.uniforms[0]
program['pos'] = [1, 2, 3, 4]
program.activate() # should print
#uniform.upload(program)
program.detach(vert)
program.detach(frag)
assert_raises(RuntimeError, program.detach, vert)
assert_raises(RuntimeError, program.detach, frag)
vert = VertexShader("attribute vec4 pos;"
"void main (void) {gl_Position = pos;}")
frag = FragmentShader("void main (void) {}")
program = Program(vert, frag)
#attribute = program.attributes[0]
program["pos"] = [1, 2, 3, 4]
program.activate()
#attribute.upload(program)
# cannot get element count
#assert_raises(RuntimeError, program.draw, 'POINTS')
# use a real program
vert = ("uniform mat4 u_model;"
"attribute vec2 a_position; attribute vec4 a_color;"
"varying vec4 v_color;"
"void main (void) {v_color = a_color;"
"gl_Position = u_model * vec4(a_position, 0.0, 1.0);"
"v_color = a_color;}")
frag = "void main() {gl_FragColor = vec4(0, 0, 0, 1);}"
n, p = 250, 50
T = np.random.uniform(0, 2 * np.pi, n)
position = np.zeros((n, 2), dtype=np.float32)
position[:, 0] = np.cos(T)
position[:, 1] = np.sin(T)
color = np.ones((n, 4), dtype=np.float32) * (1, 1, 1, 1)
data = np.zeros(n * p, [('a_position', np.float32, 2),
('a_color', np.float32, 4)])
data['a_position'] = np.repeat(position, p, axis=0)
data['a_color'] = np.repeat(color, p, axis=0)
program = Program(vert, frag)
program.bind(VertexBuffer(data))
program['u_model'] = np.eye(4, dtype=np.float32)
# different codepath if no call to activate()
program.draw(gl.GL_POINTS)
subset = IndexBuffer(np.arange(10, dtype=np.uint32))
program.draw(gl.GL_POINTS, subset)
# bad programs
frag_bad = ("varying vec4 v_colors") # no semicolon
program = Program(vert, frag_bad)
assert_raises(RuntimeError, program.activate)
frag_bad = None # no fragment code. no main is not always enough
program = Program(vert, frag_bad)
assert_raises(ValueError, program.activate)
# Timer
timer = Timer(interval=0.001, connect=on_mouse_move, iterations=2,
start=True, app=app)
timer.start()
timer.interval = 0.002
assert_equal(timer.interval, 0.002)
assert_true(timer.running)
sleep(.003)
assert_true(timer.elapsed >= 0.002)
timer.stop()
assert_true(not timer.running)
assert_true(timer.native)
timer.disconnect()
# test that callbacks take reasonable inputs
_test_callbacks(canvas)
# cleanup
canvas.swap_buffers()
canvas.update()
app.process_events()
# put this in even though __exit__ will call it to make sure we don't
# have problems calling it multiple times
canvas.close() # done by context
def test_multiple_canvases():
"""Testing multiple canvases"""
n_check = 3
app = use_app()
if app.backend_name.lower() == "glut":
raise SkipTest("glut cannot use multiple canvases")
with Canvas(app=app, size=_win_size, title="same_0") as c0:
with Canvas(app=app, size=_win_size, title="same_1") as c1:
ct = [0, 0]
@c0.events.draw.connect
def draw0(event):
ct[0] += 1
c0.update()
@c1.events.draw.connect # noqa, analysis:ignore
def draw1(event):
ct[1] += 1
c1.update()
c0.show() # ensure visible
c1.show()
c0.update() # force first draw
c1.update()
timeout = time() + 2.0
while (ct[0] < n_check or ct[1] < n_check) and time() < timeout:
app.process_events()
print((ct, n_check))
assert_true(n_check <= ct[0] <= n_check + 1)
assert_true(n_check <= ct[1] <= n_check + 1)
# check timer
global timer_ran
timer_ran = False
def on_timer(_):
global timer_ran
timer_ran = True
timeout = time() + 2.0
Timer(0.1, app=app, connect=on_timer, iterations=1, start=True)
while not timer_ran and time() < timeout:
app.process_events()
assert_true(timer_ran)
if app.backend_name.lower() == "wx":
raise SkipTest("wx fails test #2") # XXX TODO Fix this
kwargs = dict(app=app, autoswap=False, size=_win_size, show=True)
with Canvas(title="0", **kwargs) as c0:
with Canvas(title="1", **kwargs) as c1:
bgcolors = [None] * 2
@c0.events.draw.connect
def draw00(event):
print(" {0:7}: {1}".format("0", bgcolors[0]))
if bgcolors[0] is not None:
gl.glViewport(0, 0, *list(_win_size))
gl.glClearColor(*bgcolors[0])
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glFinish()
@c1.events.draw.connect
def draw11(event):
print(" {0:7}: {1}".format("1", bgcolors[1]))
if bgcolors[1] is not None:
gl.glViewport(0, 0, *list(_win_size))
gl.glClearColor(*bgcolors[1])
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glFinish()
for ci, canvas in enumerate((c0, c1)):
print("draw %s" % canvas.title)
bgcolors[ci] = [0.5, 0.5, 0.5, 1.0]
_update_process_check(canvas, 127)
for ci, canvas in enumerate((c0, c1)):
print("test")
_update_process_check(canvas, 127, draw=False)
bgcolors[ci] = [1.0, 1.0, 1.0, 1.0]
_update_process_check(canvas, 255)
bgcolors[ci] = [0.25, 0.25, 0.25, 0.25]
_update_process_check(canvas, 64)
# Author: Tomas Hodan ([email protected]) # Center for Machine Perception, Czech Technical University in Prague import numpy as np from vispy import app, gloo import OpenGL.GL as gl # WARNING: doesn't work with Qt4 (update() does not call on_draw()??) app.use_app('PyGlet') # Set backend # Color vertex shader #------------------------------------------------------------------------------- _color_vertex_code = """ uniform mat4 u_mv; uniform mat4 u_mvp; uniform vec3 u_light_eye_pos; attribute vec3 a_position; attribute vec4 a_color; varying vec4 v_color; varying vec3 v_eye_pos; varying vec3 v_L; void main() { gl_Position = u_mvp * vec4(a_position, 1.0); v_color = a_color; v_eye_pos = (u_mv * vec4(a_position, 1.0)).xyz; // Vertex position in eye coordinates v_L = normalize(u_light_eye_pos - v_eye_pos); // Vector to the light } """
import numpy as np
from vispy import app, gloo
import OpenGL.GL as gl
app.use_app('pyglet') # Set backend
_vertex_code_colored = """
uniform mat4 u_mv;
uniform mat4 u_mvp;
uniform vec3 u_light_eye_pos;
attribute vec3 a_position;
attribute vec3 a_color;
varying vec3 v_color;
varying vec3 v_eye_pos;
varying vec3 v_L;
void main() {
gl_Position = u_mvp * vec4(a_position, 1.0);
v_color = a_color;
v_eye_pos = (u_mv * vec4(a_position, 1.0)).xyz; // Vertex position in eye coordinates
v_L = normalize(u_light_eye_pos - v_eye_pos); // Vector to the light
}
"""
_fragment_code_colored = """
uniform float u_light_ambient_w;
def cube(im_in, azimuth=30., elevation=45., name=None,
ext=ext, do_axis=True, show_label=True,
cube_label = {'x':'x', 'y':'y', 't':'t'},
colormap='gray', roll=-180., vmin=0., vmax=1.,
figsize=figsize, **kwargs):
"""
Visualization of the stimulus as a cube
"""
if not(os.path.isdir(figpath)): os.mkdir(figpath)
im = im_in.copy()
N_X, N_Y, N_frame = im.shape
fx, fy, ft = get_grids(N_X, N_Y, N_frame)
import numpy as np
from vispy import app, scene
app.use_app('pyglet')
from vispy.util.transforms import perspective, translate, rotate
canvas = scene.SceneCanvas(size=figsize, bgcolor='white', dpi=450)
view = canvas.central_widget.add_view()
# frame = scene.visuals.Cube(size = (N_X/2, N_frame/2, N_Y/2), color=(0., 0., 0., 0.),
# edge_color='k',
# parent=view.scene)
for p in ([1, 1, 1, -1, 1, 1], [1, 1, -1, -1, 1, -1], [1, -1, 1, -1, -1, 1],[1, -1, -1, -1, -1, -1],
[1, 1, 1, 1, -1, 1], [-1, 1, 1, -1, -1, 1], [1, 1, -1, 1, -1, -1], [-1, 1, -1, -1, -1, -1],
[1, 1, 1, 1, 1, -1], [-1, 1, 1, -1, 1, -1], [1, -1, 1, 1, -1, -1], [-1, -1, 1, -1, -1, -1]):
# line = scene.visuals.Line(pos=np.array([[p[0]*N_Y/2, p[1]*N_X/2, p[2]*N_frame/2], [p[3]*N_Y/2, p[4]*N_X/2, p[5]*N_frame/2]]), color='black', parent=view.scene)
line = scene.visuals.Line(pos=np.array([[p[0]*N_X/2, p[1]*N_frame/2, p[2]*N_Y/2],
[p[3]*N_X/2, p[4]*N_frame/2, p[5]*N_Y/2]]), color='black', parent=view.scene)
opts = {'parent':view.scene, 'cmap':'grays', 'clim':(0., 1.)}
image_xy = scene.visuals.Image(np.rot90(im[:, :, 0], 3), **opts)
tr_xy = scene.transforms.MatrixTransform()
tr_xy.rotate(90, (1, 0, 0))
tr_xy.translate((-N_X/2, -N_frame/2, -N_Y/2))
image_xy.transform = tr_xy
image_xt = scene.visuals.Image(np.fliplr(im[:, -1, :]), **opts)
tr_xt = scene.transforms.MatrixTransform()
tr_xt.rotate(90, (0, 0, 1))
tr_xt.translate((N_X/2, -N_frame/2, N_Y/2))
image_xt.transform = tr_xt
image_yt = scene.visuals.Image(np.rot90(im[-1, :, :], 1), **opts)
tr_yt = scene.transforms.MatrixTransform()
tr_yt.rotate(90, (0, 1, 0))
tr_yt.translate((+N_X/2, -N_frame/2, N_Y/2))
image_yt.transform = tr_yt
if do_axis:
t = {}
for text in ['x', 'y', 't']:
t[text] = scene.visuals.Text(cube_label[text], parent=canvas.scene, face='Helvetica', color='black')
t[text].font_size = 8
t['x'].pos = canvas.size[0] // 3, canvas.size[1] - canvas.size[1] // 8
t['t'].pos = canvas.size[0] - canvas.size[0] // 5, canvas.size[1] - canvas.size[1] // 6
t['y'].pos = canvas.size[0] // 12, canvas.size[1] // 2
cam = scene.TurntableCamera(elevation=35, azimuth=30)
cam.fov = 45
cam.scale_factor = N_X * 1.7
if do_axis: margin = 1.3
else: margin = 1
cam.set_range((-N_X/2, N_X/2), (-N_Y/2*margin, N_Y/2/margin), (-N_frame/2, N_frame/2))
view.camera = cam
if not(name is None):
im = canvas.render(size=figsize)
app.quit()
import vispy.io as io
io.write_png(name + ext, im)
else:
app.quit()
return im
from collections import OrderedDict
from vispy import geometry
from vispy import scene
from vispy import app
from vispy import visuals
qtapp = app.use_app("pyqt4")
QtCore = qtapp.backend_module.QtCore
QtGui = qtapp.backend_module.QtGui
__class__ = ["StructureWidget", "StructureViewer"]
class StructureCanvas(scene.SceneCanvas):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
def on_close(self, event):
app.quit()
super().on_close(event)
class StructureViewer:
"""This viewer only use Vispy and automatic backend associated.
Usage
-----
>>> v = StructureViewer()
from .qt_dims import QtDims
from .qt_layerlist import QtLayerList
from ..resources import resources_dir
from ..util.theme import template
from ..util.misc import is_multichannel
from ..util.keybindings import components_to_key_combo
from ..util.io import read
from .qt_controls import QtControls
from .qt_layer_buttons import QtLayersButtons
from .qt_console import QtConsole
# set vispy application to the appropriate qt backend
use_app(API_NAME)
class QtViewer(QSplitter):
with open(os.path.join(resources_dir, 'stylesheet.qss'), 'r') as f:
raw_stylesheet = f.read()
def __init__(self, viewer):
super().__init__()
QCoreApplication.setAttribute(
Qt.AA_UseStyleSheetPropagationInWidgetStyles, True
)
self.viewer = viewer
self.dims = QtDims(self.viewer.dims)
Author: Penny Xuran Qian (NAOC/SAO) [email protected] Date: Feb 15, 2016 License: GPL Usage: running the code with 'python selection_vispy_github.py'. press '1' or '2' to switch between view mode and selection mode for lasso method and picking method, respectively. """ import sys import numpy as np from PyQt4 import QtGui, QtCore from vispy import app, scene from matplotlib import path app.use_app("pyqt4") def rectangle_vertice(center, height, width): # Borrow from _generate_vertices in vispy/visual/rectangle.py half_height = height / 2.0 half_width = width / 2.0 bias1 = np.ones(4) * half_width bias2 = np.ones(4) * half_height corner1 = np.empty([1, 3], dtype=np.float32) corner2 = np.empty([1, 3], dtype=np.float32) corner3 = np.empty([1, 3], dtype=np.float32) corner4 = np.empty([1, 3], dtype=np.float32)
"""
__DEBUG__ = False
from math import pi
from scipy.ndimage import imread
from vispy import app
from vispy.gloo import clear, set_clear_color, set_viewport, Program
from jinja2 import Template
from wavesynlib.languagecenter.pysl.utils import hit_circle, hit_line
from wavesynlib.languagecenter.pysl.constants import pi as PI_STR
# The PyQt5 support of VisPy still has some problems.
# Hence we use the GLFW backend here.
app.use_app(backend_name='glfw')
vertex = """
#version 420
attribute vec2 position;
out vec2 texcoord;
void main(){
gl_Position = vec4(position, 0.0, 1.0 );
texcoord = position;
}
"""
def _test_module_properties(_module=None):
"""Test application module"""
if _module is None:
app = use_app()
_module = app.backend_module
# Test that the keymap contains all keys supported by vispy.
module_fname = _module.__name__.split('.')[-1]
if module_fname != '_egl': # skip keys for EGL
keymap = _module.KEYMAP
vispy_keys = keymap.values()
for keyname in dir(keys):
if keyname.upper() != keyname:
continue
key = getattr(keys, keyname)
assert_in(key, vispy_keys)
# For Qt backend, we have a common implementation
alt_modname = ''
if module_fname in ('_pyside', '_pyqt4', '_pyqt5'):
alt_modname = _module.__name__.rsplit('.', 1)[0] + '._qt'
# Test that all _vispy_x methods are there.
exceptions = ('_vispy_get_native_canvas', '_vispy_get_native_timer',
'_vispy_get_native_app', '_vispy_reuse', '_vispy_mouse_move',
'_vispy_mouse_press', '_vispy_mouse_release',
'_vispy_get_geometry', '_process_backend_kwargs'
) # defined in base class
class KlassRef(vispy.app.base.BaseCanvasBackend):
def __init__(self, *args, **kwargs):
pass # Do not call the base class, since it will check for Canvas
Klass = _module.CanvasBackend
base = KlassRef()
for key in dir(KlassRef):
if not key.startswith('__'):
method = getattr(Klass, key)
if key not in exceptions:
print(key)
args = [None] * (len(getargspec(method).args) - 1)
assert_raises(NotImplementedError, getattr(base, key), *args)
if hasattr(method, '__module__'):
mod_str = method.__module__ # Py3k
else:
mod_str = method.im_func.__module__
assert_in(
mod_str, (_module.__name__, alt_modname),
"Method %s.%s not defined in %s" %
(Klass, key, _module.__name__))
Klass = _module.TimerBackend
KlassRef = vispy.app.timer.TimerBackend
for key in dir(KlassRef):
if not key.startswith('__'):
method = getattr(Klass, key)
if key not in exceptions:
if hasattr(method, '__module__'):
# Py3k
assert_in(method.__module__,
(_module.__name__, alt_modname))
else:
t = method.im_func.__module__ == _module.__name__
assert t
Klass = _module.ApplicationBackend
KlassRef = vispy.app.application.ApplicationBackend
for key in dir(KlassRef):
if not key.startswith('__'):
method = getattr(Klass, key)
if key not in exceptions:
if hasattr(method, '__module__'):
# Py3k
assert_in(method.__module__,
(_module.__name__, alt_modname))
else:
t = method.im_func.__module__ == _module.__name__
assert t
# Test that all events seem to be emitted.
# Get text
fname = _module.__file__.rstrip('c') # "strip" will break windows!
with open(fname, 'rb') as fid:
text = fid.read().decode('utf-8')
canvas = vispy.app.Canvas(create_native=False, app=DummyApplication())
# Stylus and touch are ignored because they are not yet implemented.
# Mouse events are emitted from the CanvasBackend base class.
ignore = set([
'stylus', 'touch', 'mouse_press', 'paint', 'mouse_move',
'mouse_release', 'close'
])
if module_fname == '_egl':
ignore += ['key_release', 'key_press']
eventNames = set(canvas.events._emitters.keys()) - ignore
if not alt_modname: # Only check for non-proxy modules
for name in eventNames:
assert_in('events.%s' % name, text,
'events.%s does not appear in %s' % (name, fname))
from PyQt5.QtWidgets import QApplication, QMainWindow
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
import time
import numpy as np
from vispy import app
import vispy
from PyQt5.QtWidgets import *
import vispy.app
import sys
from vispy.app import use_app
use_app('PyQt5')
from vispy import scene
from vispy import color
from vispy.color.colormap import Colormap
import h5py
import imageio
from vispy import visuals
import tensorly as tl
from tensorly.decomposition import tucker
from tensorly import tucker_to_tensor
class Canvas(scene.SceneCanvas):
def __init__(self):
import sys
import numpy as np
from PyQt4 import QtGui, QtCore
from vispy import app, scene
from matplotlib import path
import pyfits
from astropy.io import fits
from astropy.utils.data import get_pkg_data_filename
from multivol import MultiVolume
from multivol import get_translucent_cmap
import flood_fill_3d
import math
app.use_app('pyqt4')
def rectangle_vertice(center, height, width):
# Borrow from _generate_vertices in vispy/visuals/rectangle.py
half_height = height / 2.
half_width = width / 2.
bias1 = np.ones(4) * half_width
bias2 = np.ones(4) * half_height
corner1 = np.empty([1, 3], dtype=np.float32)
corner2 = np.empty([1, 3], dtype=np.float32)
corner3 = np.empty([1, 3], dtype=np.float32)
corner4 = np.empty([1, 3], dtype=np.float32)
import os
import numpy as np
from rendkit.envmap.io import unstack_cross, load_envmap, stack_cross
from rendkit.envmap.prefilter import prefilter_irradiance
from vispy import app
from matplotlib import pyplot as plt
_package_dir = os.path.dirname(os.path.realpath(__file__))
_resource_dir = os.path.join(_package_dir, '..', 'resources')
_cubemap_dir = os.path.join(_resource_dir, 'cubemaps')
app.use_app('glfw')
def main():
app.Canvas(show=False)
cube_faces = unstack_cross(
stack_cross(load_envmap(os.path.join(_cubemap_dir, 'yokohama'))))
irradiance_map = prefilter_irradiance(cube_faces)
plt.imshow(
np.vstack((stack_cross(cube_faces), stack_cross(irradiance_map))))
plt.show()
if __name__ == '__main__':
main()
1. Not showing the canvas (show=False).
2. Rendering to an FBO.
3. Manually triggering a rendering pass with self.update().
4. Retrieving the scene with _screenshot().
5. Closing the app after the first rendering pass (if that's the intended
scenario).
"""
from vispy import gloo
from vispy import app
from vispy.util.ptime import time
from vispy.gloo.util import _screenshot
# WARNING: doesn't work with Qt4 (update() does not call on_draw()??)
app.use_app('glfw')
vertex = """
attribute vec2 position;
void main()
{
gl_Position = vec4(position, 0, 1.0);
}
"""
fragment = """
uniform vec2 resolution;
uniform vec2 center;
uniform float scale;
uniform int iter;