节点Node (Fusion)

难度LEVELL3 · 高级L3 · Advanced 领域TOPIC视觉特效

先学：Prerequisites: Fusion 页面

学习目标LEARNING OBJECTIVES

学完你能说清节点（Node）是什么、管道怎么连，并能添加、连接、断开和重命名节点。

概念说明CONCEPTS

节点是 Fusion 里最小的功能单元——每个节点只做一件事：生成背景、写字、模糊、合并。把节点用管道（Pipe）连起来，就搭出了整个效果。

  • 一个节点一件事：效果被拆成一排看得见的零件，哪一环出问题一眼定位。
  • 管道有方向：节点右侧的灰色方块是输出（Output），左侧的三角是输入（Input），画面数据从输出流向输入。
  • 输入颜色有意义：橙色三角 = 背景、绿色 = 前景、蓝色 = 效果遮罩（Effect Mask）——接线认颜色，不认位置。
  • 比图层自由：图层只能从上往下叠；节点像电路板自由走线，一个输出还能同时喂给多个节点。

操作步骤STEPS

  1. 在节点编辑器里先选中一个节点，再点工具条上的图标——新节点自动接在它后面点工具条图标在选中节点后添加新节点
  2. 也可以按 Shift-空格 打开 Select Tool 对话框，输入名称回车添加（详见 工具选择对话框）
  3. 按住节点右侧的灰色输出方块，拖到下游节点的三角输入上松手，管道即连通拖动输出方块到输入三角完成连接
  4. 想断开：悬停管道线，它变成蓝黄两色后在蓝色一侧双击（或按住 Shift 把节点拖开）
  5. 选中节点按 F2 重命名——名字不能含空格，用驼峰式如 WhiteBackground

练习PRACTICE

  1. 在合成里添加一个 Background 节点并连到 MediaOut1，在查看器里看到纯色画面。
  2. 把这个连接断开再重新连上，然后将节点改名为无空格的驼峰名。

常见问题FAQ

节点和图层到底有什么区别？

图层像一摞玻璃片，只能按顺序上下叠；节点像电路板，走线自由、能分能合。复杂效果用节点才不会乱。

接错了线怎么撤销连接？

悬停管道线，变蓝黄两色后在蓝色一侧双击即可断开；或按住 Shift 直接把节点拽开。Cmd-Z（Win: Ctrl-Z）永远兜底。

怎么临时关掉某个节点看前后对比？

选中节点按 Cmd-P（Win: Ctrl-P）让它直通：效果被旁通，连接还留着，再按一次恢复。

Learning Objectives学习目标

After this card you can explain what a node is and how pipes work, and you can add, connect, disconnect, and rename nodes.

Concepts概念说明

A node is the smallest functional unit in Fusion — each node does exactly one job: make a background, draw text, blur, merge. Wire nodes together with pipes and you've built the whole effect.

  • One node, one job: an effect is broken into visible parts, so a broken stage is easy to spot.
  • Pipes have direction: the gray square on a node's right is the output; the triangles on its left are inputs. Picture data flows from output to input.
  • Input colors matter: orange triangle = background, green = foreground, blue = effect mask — connect by color, not by position.
  • Freer than layers: layers stack top-down like glass sheets; nodes wire like a circuit board, and one output can feed several nodes at once.

Steps操作步骤

  1. Select a node in the Node Editor, then click a toolbar icon — the new node lands right after itAdding a node after the selected one from the toolbar
  2. Or press Shift-Space to open the Select Tool dialog, type a name, and hit Enter (see Tool Selection Dialog)
  3. Drag from the gray output square of one node onto a downstream input triangle and release — the pipe is connectedDragging an output square onto an input triangle
  4. To disconnect: hover the pipe until it turns blue and yellow, then double-click on the blue side (or Shift-drag the node away)
  5. Select a node and press F2 to rename it — no spaces allowed, so use camel case like WhiteBackground

Practice练习

  1. Add a Background node and wire it into MediaOut1 until a solid color shows in the viewer.
  2. Break that connection and redo it, then rename the node with a space-free camel-case name.

FAQ常见问题

What's the real difference between nodes and layers?

Layers are stacked glass sheets — order is all you've got. Nodes are a circuit board: wire freely, branch and merge at will. Complex effects stay readable.

How do I undo a wrong connection?

Hover the pipe until it turns blue and yellow, then double-click the blue side — or hold Shift and drag the node away. Cmd-Z (Ctrl-Z on Windows) always bails you out.

How do I temporarily switch a node off for a before/after look?

Select it and press Cmd-P (Ctrl-P on Windows) to pass it through: the effect is bypassed but the wiring stays. Press again to bring it back.

深度资料：节点 →Deep dive: 节点 →

本卡术语Terms in this card

模糊Blur 合成Compositing Fusion 合成Fusion 合并Merge 节点Node