SPST draws a complete spiral staircase in 3D from about a dozen answers: centre point, inner and outer radius, the angle swept between the first and last steps, the total rise, and the number of steps. It builds the treads and the railings as 3D mesh surfaces, so what you get is a genuine three-dimensional object you can view from any angle, not a plan symbol. It is by … [Read more...] about Spiral Staircase LISP for AutoCAD: Draw Stairs in 3D (Free)
Several Polylines Simultaneously Lisp Routine
Name: SPS Description: Program to process of several polylines simultaneously. The user can select a group of entities, the program will filter out non-polylines. The user is then prompted to select one of the following properties to be manipulated; Width - change all selected plines to the specified width, Elev - change all selected plines to the specified elev, Layer - change … [Read more...] about Several Polylines Simultaneously Lisp Routine
SL LISP: Set the Current AutoCAD Layer by Picking an Object
Click an object, and its layer becomes the current layer. That is the whole routine, and it is one of the most-used operations in drafting — you are about to draw something that belongs with that, so make that layer current. It is by Art Whitton, finished on 21 November 1996 and revised six days later. It is coursework, and the header says so The file's header records … [Read more...] about SL LISP: Set the Current AutoCAD Layer by Picking an Object
SLOT LISP: Draw a Slotted Hole at Any Angle in AutoCAD
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 LISP: Rotate Objects to Match Another Angle
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
Roof Pitch LISP: Place Rise-over-Run Symbols in AutoCAD
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