76 lines
1.8 KiB
Python
76 lines
1.8 KiB
Python
|
from typing import Tuple, Optional
|
||
|
|
|
||
|
|
# from pyglet.gl import gl
|
||
|
|
from pyglet.math import Mat4, Vec3
|
||
|
|
from pyglet.graphics import Group
|
||
|
|
|
||
|
|
|
||
|
|
class GroupCamera(Group):
|
||
|
|
"""
|
||
|
|
A camera by group
|
||
|
|
can be used by just added to your widget
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
window,
|
||
|
|
order: int = 0,
|
||
|
|
parent: Optional[Group] = None,
|
||
|
|
view_x: Optional[int] = 0,
|
||
|
|
view_y: Optional[int] = 0,
|
||
|
|
zoom: Optional[float] = 1.0,
|
||
|
|
min_zoom: Optional[float] = 1.0,
|
||
|
|
max_zoom: Optional[float] = 1.0,
|
||
|
|
):
|
||
|
|
super().__init__(order=order, parent=parent)
|
||
|
|
self._window = window
|
||
|
|
self._previous_view = None
|
||
|
|
|
||
|
|
self._view_x = view_x or 0
|
||
|
|
self._view_y = view_y or 0
|
||
|
|
self._zoom = zoom or 1.0
|
||
|
|
self.min_zoom = min_zoom or 1.0
|
||
|
|
self.max_zoom = max_zoom or 1.0
|
||
|
|
|
||
|
|
@property
|
||
|
|
def view_x(self) -> int:
|
||
|
|
return self._view_x
|
||
|
|
|
||
|
|
@view_x.setter
|
||
|
|
def view_x(self, value: int):
|
||
|
|
self._view_x = value
|
||
|
|
|
||
|
|
@property
|
||
|
|
def view_y(self) -> int:
|
||
|
|
return self._view_y
|
||
|
|
|
||
|
|
@view_y.setter
|
||
|
|
def view_y(self, value: int):
|
||
|
|
self._view_y = value
|
||
|
|
|
||
|
|
@property
|
||
|
|
def zoom(self) -> float:
|
||
|
|
return min(max(self._zoom, self.min_zoom), self.max_zoom)
|
||
|
|
|
||
|
|
@zoom.setter
|
||
|
|
def zoom(self, value: float):
|
||
|
|
self._zoom = value
|
||
|
|
|
||
|
|
def reset(self):
|
||
|
|
self._view_x = 0
|
||
|
|
self._view_y = 0
|
||
|
|
self.zoom = 1
|
||
|
|
|
||
|
|
def set_state(self):
|
||
|
|
self._previous_view = self._window.view
|
||
|
|
|
||
|
|
view = Mat4.from_translation(Vec3(self._view_x, self._view_y, 0))
|
||
|
|
if self._zoom == 1.0:
|
||
|
|
self._window.view = view
|
||
|
|
else:
|
||
|
|
view = view.scale(Vec3(self._zoom, self._zoom, 1))
|
||
|
|
self._window.view = view
|
||
|
|
|
||
|
|
def unset_state(self):
|
||
|
|
self._window.view = self._previous_view
|