User Manual

13 Switch to the Time tab of the modifier and set the First Operand Time Scale to -1.0.
Normally, the first operand gets the value of the control it is connected to from the
same frame as the current time. So at frame 10, the first operand is set to the same
value as the Text size at frame 10. By setting this value to -1, the value is read from
one frame back in time whenever the current time of the composition advances
by 1 frame.
However, this means that the Calculation would be reading the value of the
Text size at frame -10 when we are at frame 10 in the composition.
14 To correct for this, set the First Operand Time Offset slider to 100.
15 Return to the Tools tab at the top of the Inspector and press Play (Spacebar) to
watch how the value of the Blur Size relates to the value of the Text Size.
CoordTransform Position
Because of the hierarchical nature of 3D in Fusion, the original position of an object in a 3D
scene often fails to indicate the current position of the object. For example, an image plane
might initially have a position at 1, 2, 1, but then be scaled, offset, and rotated by other tools
further downstream in the node tree, ending up with an absolute location of 10, 20, 5. This can
complicate connecting an object further downstream in the composition directly to the position
of an upstream object. The Coordinate Transform modifier can be added to any set of the XYZ
coordinate controls to calculate the current position of a given object at any point in the scene
hierarchy. To add a Coordinate Transform modifier, right-click the numeric input on any node,
and select Modify With > CoordTransform Position from the contextual menu.
Inspector
Controls Tab
The Controls tab has two fields for the target and scene input. The target is for the node
continuing the original coordinates, while the scene input is used for the scene with the new
coordinates.
Target Object
This control is connected to the 3D tool that produces the original coordinates to be
transformed. To connect a tool, drag the node from the Node Editor into the text edit control, or
right-click the control and select the tool from the contextual menu. It is also possible to type
the tool’s name directly into the control.
SubID
The SubID slider can be used to target an individual sub-element of certain types of geometry,
such as an individual character produced by a Text 3D tool or a specific copy created by a
Duplicate 3D tool.
Scene Input
This control should be connected to the 3D tool, which outputs the scene containing the object
at the new location. To connect a tool, drag and drop a tool tile from the Node Editor into the
text edit control, or right-click the control and select an object from the Connect To
pop-up menu.
Chapter – 111 Modifiers 2513