/usr/share/pyshared/glitch/gtk/gtkmovingcamera.py is in python-glitch 0.6-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import string
import time
from math import acos, cos, pi, sin, sqrt
import gtk
from glitch.gtk import GtkCamera
bindings = {
'w': 'forward',
'a': 'left',
's': 'back',
'd': 'right',
'Up': 'forward',
'Down': 'back',
'Left': 'left',
'Right': 'right',
'F11': 'toggle-lighting',
'F12': 'toggle-debug',
'W': 'turn-up',
'A': 'turn-left',
'S': 'turn-down',
'D': 'turn-right',
'Shift-Left': 'turn-left',
'Shift-Right': 'turn-right',
'Shift-Up': 'turn-up',
'Shift-Down': 'turn-down',
'Page_Up': 'go-up',
'Page_Down': 'go-down',
}
class GtkMovingCamera(GtkCamera):
def __init__(self, grab_mouse=False, **kw):
GtkCamera.__init__(self, **kw)
self.have_grab = False
self.last_event_time = None
self.add_events(gtk.gdk.POINTER_MOTION_MASK)
self.connect('grab-broken-event', self.grab_broken)
self.connect('key-press-event', self.key_pressed)
if grab_mouse:
self.connect('motion-notify-event', self.motion_notify)
self.connect('visibility-notify-event', self.visibility)
def visibility(self, _widget, event):
if not self.have_grab:
result = self.grab()
if result == gtk.gdk.GRAB_SUCCESS:
self.have_grab = True
def grab_broken(self, _widget, event):
self.have_grab = False
def grab(self):
window = self.window
pixmap = gtk.gdk.Pixmap(window, 1, 1, 1)
color = gtk.gdk.Color()
blank_cursor = gtk.gdk.Cursor(pixmap, pixmap, color, color, 0, 0)
return gtk.gdk.pointer_grab(
window, False, gtk.gdk.POINTER_MOTION_MASK, None,
blank_cursor, 0)
def get_orientation(self):
(ex, ey, ez) = self.eye
(rx, ry, rz) = self.ref
r1 = sqrt((ex - rx) ** 2 + (ez - rz) ** 2)
yaw = acos((ez - rz) / r1)
if ex - rx < 0:
yaw *= -1
r2 = sqrt((ex - rz) ** 2 + (ez - rz) ** 2 + (ey - ry) ** 2)
pitch = acos((ey - ry) / r2)
return (yaw, pitch)
def set_orientation(self, yaw, pitch):
(ex, ey, ez) = self.eye
(rx, ry, rz) = self.ref
r1 = sqrt((ex - rx) ** 2 + (ez - rz) ** 2)
r2 = sqrt((ex - rz) ** 2 + (ey - ry) ** 2 + (ez - rz) ** 2)
self.ref[0] = ex - r1 * sin(yaw)
self.ref[1] = ey - r2 * cos(pitch)
self.ref[2] = ez - r1 * cos(yaw)
def key_pressed(self, _widget, event):
name = gtk.gdk.keyval_name(event.keyval)
if name not in string.uppercase and event.state & gtk.gdk.SHIFT_MASK:
name = 'Shift-' + name
slow = False
if event.state & gtk.gdk.CONTROL_MASK:
slow = True
if name in bindings:
action = bindings[name].replace('-', '_')
method = getattr(self, action)
method(slow)
def toggle_lighting(self, *args):
self.ctx['lighting'] = not self.ctx['lighting']
print 'lighting = %r' % self.ctx['lighting']
self.refresh()
def toggle_debug(self, *args):
self.ctx['debug'] = not self.ctx['debug']
print 'debug = %r' % self.ctx['debug']
self.refresh()
def forward(self, slow):
(yaw, pitch) = self.get_orientation()
self.eye[0] -= (0.04 if slow else 0.4) * sin(yaw)
self.eye[2] -= (0.04 if slow else 0.4) * cos(yaw)
self.ref[0] -= (0.04 if slow else 0.4) * sin(yaw)
self.ref[2] -= (0.04 if slow else 0.4) * cos(yaw)
self.refresh()
def back(self, slow):
(yaw, pitch) = self.get_orientation()
self.eye[0] += (0.04 if slow else 0.4) * sin(yaw)
self.eye[2] += (0.04 if slow else 0.4) * cos(yaw)
self.ref[0] += (0.04 if slow else 0.4) * sin(yaw)
self.ref[2] += (0.04 if slow else 0.4) * cos(yaw)
self.refresh()
def left(self, slow):
(yaw, pitch) = self.get_orientation()
self.eye[0] -= (0.04 if slow else 0.4) * sin(yaw + pi / 2)
self.eye[2] -= (0.04 if slow else 0.4) * cos(yaw + pi / 2)
self.ref[0] -= (0.04 if slow else 0.4) * sin(yaw + pi / 2)
self.ref[2] -= (0.04 if slow else 0.4) * cos(yaw + pi / 2)
self.refresh()
def right(self, slow):
(yaw, pitch) = self.get_orientation()
self.eye[0] += (0.04 if slow else 0.4) * sin(yaw + pi / 2)
self.eye[2] += (0.04 if slow else 0.4) * cos(yaw + pi / 2)
self.ref[0] += (0.04 if slow else 0.4) * sin(yaw + pi / 2)
self.ref[2] += (0.04 if slow else 0.4) * cos(yaw + pi / 2)
self.refresh()
def turn_left(self, slow):
self.turn(-(0.01 if slow else 0.1), 0)
def turn_right(self, slow):
self.turn((0.01 if slow else 0.1), 0)
def turn_up(self, slow):
self.turn(0, -(0.01 if slow else 0.1))
def turn_down(self, slow):
self.turn(0, (0.01 if slow else 0.1))
def go_up(self, slow):
self.eye[1] += (0.01 if slow else 0.1)
self.ref[1] += (0.01 if slow else 0.1)
self.refresh()
def go_down(self, slow):
self.eye[1] -= (0.01 if slow else 0.1)
self.ref[1] -= (0.01 if slow else 0.1)
self.refresh()
def turn(self, d_yaw, d_pitch):
(ex, ey, ez) = self.eye
(yaw, pitch) = self.get_orientation()
self.set_orientation(yaw - d_yaw, pitch - d_pitch)
self.refresh()
def motion_notify(self, _widget, event):
t = time.time()
if (self.last_event_time is not None and
t - self.last_event_time < 0.05):
return False
display = gtk.gdk.display_get_default()
screen = display.get_default_screen()
(w, h) = (screen.get_width(), screen.get_height())
if self.last_event_time is not None:
d_yaw = (event.x_root - w / 2) / 100.0
d_pitch = (event.y_root - h / 2) / 100.0
if (d_yaw, d_pitch) != (0, 0):
self.turn(d_yaw, d_pitch)
display.warp_pointer(screen, w / 2, h / 2)
self.last_event_time = t
return True
def make_window(self, *args, **kwargs):
window = GtkCamera.make_window(self, *args, **kwargs)
self.grab_add()
return window
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