Wires#

comfyui_pcg changes how wires look and how they are edited on the canvas, to feel like Houdini's network editor. Everything here is front end only: workflows are saved exactly as ComfyUI saves them, and the graph runs the same with any style. The switches are in ComfyUI's settings under PCG → Houdini feel.

Wire style#

The Houdini rounded polyline next to ComfyUI's Spline and Straight styles

Style	Shape
Houdini rounded polyline (default)	A short stub out of the output, a rounded turn, a vertical run close to the output, another rounded turn, then one long horizontal run into the input. Corner radius 40 canvas units, smaller when the nodes are close. When the input is to the left of the output the vertical run goes halfway between them.
Follow ComfyUI setting	ComfyUI's own Link Render Mode (Spline, Linear, Straight or Hidden) is used again.

Set it in Settings → PCG → Houdini feel → Link style. The Houdini style is drawn by ComfyUI's Straight mode with rounded corners, so while it is on the canvas keeps Straight as its render mode; switching back restores whatever ComfyUI's setting was. The drag preview, the wire's click area, the midpoint dot (its menu) and cutting with Y all follow the shape that is drawn.

Wire colours come from ComfyUI's colour palette for each data type. The plugin adds one: the loop wire from For-Each Begin to For-Each End is orange (#f0a63c), and the two loop nodes are tinted brown, so a loop block stands out from the data wires.

Editing wires#

Rewiring by the ends, cutting with Y, the loop wire and reference lines

Action	How
Move the input end of a wire	Hover the last third of the wire (near the input); it highlights and the cursor becomes a hand. Press and drag it to another node's input. Dropped on empty canvas it disconnects (and ComfyUI's release menu or search box appears, as when dragging out of an input).
Give an input a new upstream	Press and drag the first third of the wire (near the output): a new wire is pulled from the same input. Drop it on another output to change the source; dropped on empty canvas nothing changes.
Midpoint menu	The middle third behaves as in ComfyUI: click the dot for the wire's menu.
Cut wires	Hold Y and left-drag a line across the wires to cut. Esc cancels. Works on every node in the graph.
Disconnect a node	Shake it left and right while dragging (a few quick swings): all its wires are disconnected and it flashes. Undo brings them back.
Connect to a parameter	Drop a wire on a cell of the parameter panel; it connects to that parameter (the cell is outlined in yellow while dragging). See Parameters.

Moving the ends uses ComfyUI's own link dragging, so type checks and undo are the same as when dragging from a slot. Turn it off with Drag link ends.

Snapping and arranging nodes#

While a node is dragged it snaps (within 8 screen pixels, at any zoom) so that:

its wires to the nodes upstream and downstream become horizontal (both slots at the same height);
its left edge, right edge, top edge or horizontal centre line aligns with a nearby node.

A cyan guide line shows the snap. Hold Shift while dragging to not snap (ComfyUI then snaps to its grid, if that is on). Turn snapping off with Node snapping.

To line up several nodes at once, select them and Alt + left-drag: drag mostly vertically to stack them in a column, mostly horizontally to put them in a row, with an even gap. The direction is fixed once the drag has moved 10 pixels; Esc cancels.

Reference lines#

When a node is selected, a faint dashed line is drawn between it and every node it has a parameter reference with (ch("../title/parm") in a field, or a pasted relative reference), in both directions, as in Houdini's network view. They are drawn only, not wires: the reference is evaluated in the browser, see Parameters. Turn them off with Reference dashed lines.

Renamed nodes#

A node whose title was changed shows its original type in small, dimmer text after the title (tree proxy Tube), so a renamed node can still be recognised. Its right-click menu shows the full original name and can restore it. Setting: PCG → Nodes → Show original type on renamed nodes (All nodes, PCG nodes only, Off).