Thank you Ron for the spiral macro! That's just what I needed. I found a drawing tool in Adobe Illustrator, but it is hard to use and doen't inport well into DC.
I'm so sorry you couldn't make it to the conference. I had your nametag and folder all ready for you! John John L. Carmichael Jr. Sundial Sculptures 925 E. Foothills Dr. Tucson Arizona 85718 USA Tel: 520-696-1709 Email: [EMAIL PROTECTED] Website: <http://www.sundialsculptures.com> ----- Original Message ----- From: "Ron Anthony" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, October 08, 2002 1:32 PM Subject: Re: Spiral DC drawing > John, > > Here is a DeltaCad macro to draw the spiral of Archimedes. > > There are 2 constants that you can change to change the spiral: > > Factor = how far the revolutions of the spiral are apart. I.e., the a in the formula r = a * Theta. > Revolutions = the number of spirals. > > Note: there is a bug in DeltaCad where a spline can't have more than 238 points. > > ++ron > > > > > > > > ----- Original Message ----- > From: "John Carmichael" <[EMAIL PROTECTED]> > To: "Sundial List" <[email protected]> > Sent: Sunday, October 06, 2002 12:19 PM > Subject: Spiral DC drawing > > > > Oops forgot the little attachment. Here's the DC drawing as a pdf. > > > > John > > > > > > > Hello all: > > > > > > Does anybody know how to draw a good spiral using Delta Cad? Or maybe > > there > > > is some other program that will draw spirals (spirals can be drawn with > > > different parameters) and I can import the drawing into DC as a dxf or > > bmp. > > > The only way I can think of doing it on Delta Cad is mechanically. But > > this > > > is very tedious. (see photo. First draw concentric circles, then add > > > progressively longer radii from the center at the desired intervals > > around. > > > Then I connect the radii endpoints with a spline). > > > > > > thanks > > > > > > John > > > > > > John L. Carmichael Jr. > > > Sundial Sculptures > > > 925 E. Foothills Dr. > > > Tucson Arizona 85718 > > > USA > > > > > > Tel: 520-696-1709 > > > Email: [EMAIL PROTECTED] > > > Website: <http://www.sundialsculptures.com> > > > > > > -
