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35 lines
1.0 KiB
Python
35 lines
1.0 KiB
Python
from __future__ import absolute_import
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from camera.camera import Camera
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class MovingCamera(Camera):
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"""
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Stays in line with the height, width and position
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of a given mobject
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"""
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CONFIG = {
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"aligned_dimension": "width" # or height
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}
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def __init__(self, frame, **kwargs):
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"""
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frame is a Mobject, (should be a rectangle) determining
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which region of space the camera displys
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"""
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self.frame = frame
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Camera.__init__(self, **kwargs)
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def capture_mobjects(self, *args, **kwargs):
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self.space_center = self.frame.get_center()
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self.realign_frame_shape()
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Camera.capture_mobjects(self, *args, **kwargs)
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def realign_frame_shape(self):
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height, width = self.frame_shape
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if self.aligned_dimension == "height":
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self.frame_shape = (self.frame.get_height(), width)
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else:
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self.frame_shape = (height, self.frame.get_width())
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self.resize_frame_shape(0 if self.aligned_dimension == "height" else 1)
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