Teardrops Plug-in for PCB

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Teardrops Plug-in for PCB

Download: teardrops.c (4k)

The Teardrops plug-in adds teardrops to the intersections between traces and pins/vias. This is a simplistic test, so there are cases where you'd think it would add them but doesn't:

If the trace doesn't end at *exactly* the same point as the pin/via, it will be skipped. This often happens with metric parts on an English grid or visa-versa.
If a trace passes through a pin/via but doesn't end there, there won't be any teardrops. Use :djopt(none) to split those lines into two segments, each of which ends at the pin/via.

Install

Compile like this:

gcc -I$HOME/geda/pcb-build/src -I$HOME/geda/pcb-build -O2 -shared teardrops.c -o teardrops.so

The resulting teardrops.so goes in $HOME/.pcb/plugins/teardrops.so - note that the name is important; pcb uses the name to find the init function.

The plug-in is loaded when you restart pcb.

Usage

This plug-in exports a single action Teardrops() which takes no parameters. To invoke it, use the command window, usually by typing :. Example:

:Teardrops()

With the lesstif HID you can add this action to your menu or a hotkey by editing $HOME/.pcb/pcb-menu.res (grab a copy from the pcb source if you haven't one there yet).

Known Bugs

Square pins are teardropped too
Running the plugin twice results in two sets of teardrops on each pin
Teardrops are only added if the copper trace ends exactly at the pin centerpoint. Traces with "stubs" under the pin won't be teardropped.

Examples

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