Created
December 8, 2020 06:17
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[Camera Smooth] Create a copy of the selected camera node, using a weighted average of surrounding frames #nuke
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| """ | |
| Smooth Camera | |
| Creates a new camera linked to the selected one, with a weighted average of the position/rotation curves. | |
| """ | |
| import nuke | |
| def deselectAll(): | |
| for node in nuke.selectedNodes(): | |
| node.setSelected(False) | |
| def createSmoothCopy(cam): | |
| """ | |
| Create a copy cam | |
| @type cam: nuke.Node | |
| @return: | |
| """ | |
| answ = nuke.getInput("how many frames to smooth by", "3") | |
| frameDist = int(answ) | |
| deselectAll() | |
| cam.setSelected(True) | |
| nuke.nodeCopy("%clipboard") | |
| cam.setSelected(False) | |
| nuke.nodePaste("%clipboard%") | |
| newCam = nuke.selectedNode() | |
| for knobName in ("translate", "rotate"): | |
| knob = newCam[knobName] | |
| for channel, channelName in enumerate("xyz"): | |
| knob.clearAnimated(channel) | |
| w_sum = 1 | |
| numerator = "{}.{}.{}(frame)".format(cam.fullName(), knobName, channelName) | |
| for i in range(frameDist): | |
| w = 1.0 / (i+2) | |
| numerator += " + {:0.2f}*{}.{}.{}(frame+{})".format(w, cam.fullName(), knobName, channelName, i+1) | |
| numerator += " + {:0.2f}*{}.{}.{}(frame-{})".format(w, cam.fullName(), knobName, channelName, i+1) | |
| w_sum += 2*w | |
| expr = "({}) / {}".format(numerator, w_sum) | |
| knob.setExpression(expr, channel) | |
| return newCam | |
| if __name__ == '__main__': | |
| createSmoothCopy(nuke.selectedNode()) |
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