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82 lines
2.6 KiB
Python
82 lines
2.6 KiB
Python
from manimlib.camera.camera import Camera
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from manimlib.constants import FRAME_HEIGHT
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from manimlib.constants import FRAME_WIDTH
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from manimlib.constants import ORIGIN
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from manimlib.constants import WHITE
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from manimlib.mobject.frame import ScreenRectangle
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from manimlib.mobject.types.vectorized_mobject import VGroup
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from manimlib.utils.config_ops import digest_config
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# Depricated?
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class MovingCamera(Camera):
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"""
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Stays in line with the height, width and position of it's 'frame', which is a Rectangle
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"""
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CONFIG = {
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"fixed_dimension": 0, # width
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"default_frame_stroke_color": WHITE,
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"default_frame_stroke_width": 0,
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}
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def __init__(self, frame=None, **kwargs):
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"""
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frame is a Mobject, (should almost certainly be a rectangle)
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determining which region of space the camera displys
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"""
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digest_config(self, kwargs)
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if frame is None:
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frame = ScreenRectangle(height=FRAME_HEIGHT)
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frame.set_stroke(
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self.default_frame_stroke_color,
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self.default_frame_stroke_width,
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)
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self.frame = frame
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Camera.__init__(self, **kwargs)
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# TODO, make these work for a rotated frame
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def get_frame_height(self):
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return self.frame.get_height()
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def get_frame_width(self):
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return self.frame.get_width()
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def get_frame_center(self):
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return self.frame.get_center()
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def set_frame_height(self, frame_height):
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self.frame.stretch_to_fit_height(frame_height)
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def set_frame_width(self, frame_width):
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self.frame.stretch_to_fit_width(frame_width)
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def set_frame_center(self, frame_center):
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self.frame.move_to(frame_center)
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# Since the frame can be moving around, the cairo
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# context used for updating should be regenerated
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# at each frame. So no caching.
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def get_cached_cairo_context(self, pixel_array):
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return None
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def cache_cairo_context(self, pixel_array, ctx):
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pass
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# def reset_frame_center(self):
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# self.frame_center = self.frame.get_center()
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# def realign_frame_shape(self):
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# height, width = self.frame_shape
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# if self.fixed_dimension == 0:
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# self.frame_shape = (height, self.frame.get_width())
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# else:
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# self.frame_shape = (self.frame.get_height(), width)
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# self.resize_frame_shape(fixed_dimension=self.fixed_dimension)
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def get_mobjects_indicating_movement(self):
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"""
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Returns all mobjets whose movement implies that the camera
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should think of all other mobjects on the screen as moving
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"""
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return [self.frame]
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