AutoLISP Routines

SLOT draws a slotted hole — the obround shape with two straight sides and a semicircle at each end — from four inputs: the centre point, the width, the overall length, and the angle it runs at. It comes out as a single closed polyline, so it can be offset, hatched, trimmed to or used as a boundary without any tidying up. Drawing one by hand means two circles, two … [Read more...] about SLOT LISP: Draw a Slotted Hole at Any Angle in AutoCAD

Rot2ent rotates objects so that one edge of them lines up with another object. Instead of working out an angle and typing it, you show it which line on your selection should match which line elsewhere, and it does the arithmetic. It is by TimeSavers for CAD, copyright 2001. The listing has the wrong name on it Worth clearing up first. The download table below is headed "Roof … [Read more...] about ROT2ENT LISP: Rotate Objects to Match Another Angle

Four routines that place a roof pitch symbol — the little triangle with the rise over the run written on it — on a section or elevation. There is one command for each orientation, so the triangle points the right way whichever side of the roof you are annotating. It is by Donald B. Smith, P.E., dated 19 May 2003. It asks for rise and run, not span The listing … [Read more...] about Roof Pitch LISP: Place Rise-over-Run Symbols in AutoCAD

Name: Rock Lisp Collection Description: Yet another grab bag of lisp utilities. Tonnes of good stuff, and yes again...too many to mention. Just download it and check them out.Type: AutoCAD AutoLISP Routine Author: See files File Size: 147 Kb Cost: Free Worked on: AutoCAD Download File: Rocklsp2.zip … [Read more...] about Rock Lisp Routine Collection

Two routines in one file: RAFTER draws a single rafter in elevation, and RTRUSS draws a roof truss built from a pair of them. Both are parametric — you give the member size and the rise, and the geometry follows. It is by Bob Thomas of Thomas Enterprises in San Rafael, and it belongs with his floor truss routine and cabinet elevations — the three are built the same … [Read more...] about RAFTER LISP: Parametric Rafters and Roof Trusses for AutoCAD

Layer Tool bundles the everyday layer operations into one command driven entirely by picking objects. Set the current layer, turn layers off, move objects to another layer, and build up a working list of layers as you go — all by clicking on things rather than reading names out of a dialog. It is by Axsys Technology Ltd, copyright 1990 to 1993 — the same house that … [Read more...] about Layer Tool LISP: Process AutoCAD Layers by Picking Objects