Hello @j_vogel,
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The parameter DOCUMENT_DOCUNIT in a document is just something that is added to things like the coordinate manager, to set the unit and a multiplier for the numbers shown there. It will not scale the actual geometries (as it otherwise would be destructive) and therefore does not affect the view port.
To scale all elements in the scene, you must scale all elements 🙂 . You can use the command which we implemented for that, what is talked about above and which can be invoked with the button in the document scale settings. But you then have to use its UI, which is I guess not what you want. So, you would have write something like that yourself. But there is currently no premade scene traversal in Python which can be a bit daunting for beginners (will change with the next major release). Carrying out the scaling itself is not that hard, although this complexity can also vary based on the content. Since I know you have beta access: You can also pick the latest beta build, the traversal stuff is already in there.
Cheers,
Ferdinand
Code
"""Demonstrates how to scale all objects in a scene by a given factor.
"""
import c4d
SCALE_FACTOR: c4d.Vector = c4d.Vector(2) # Scale factor for the objects, we pick a uniform scale of 2.
doc: c4d.documents.BaseDocument # The currently active document.
def IterateTree(node: c4d.GeListNode, yieldSiblings: bool = False) -> c4d.GeListNode:
"""Iterates over all descendants of the given #node and optionally its next siblings.
In the next major release, there will be (finally) built-in scene traversal functions in Python. The one
to pick for this case would be `mxutils.IterateTree`. Its signature is compatible with what I did here.
"""
def iterate(node: c4d.GeListNode) -> c4d.GeListNode:
if not node:
return
yield node
for child in node.GetChildren():
yield from iterate(child)
while node:
yield from iterate(node)
node = node.GetNext() if yieldSiblings else None
def main() -> None:
"""Called by Cinema 4D when the script is being executed.
"""
# Iterate over all objects in the document and scale them.
for node in IterateTree(doc.GetFirstObject(), yieldSiblings=True):
node.SetMl(node.GetMl() * c4d.utils.MatrixScale(SCALE_FACTOR))
c4d.EventAdd()
if __name__ == '__main__':
main()
edit: you should of course use the local and not global matrix, as you otherwise will scale things multiple times.
