Geometry problems
Geometry problems
- Subject: Geometry problems
- From: Malcolm Fitzgerald <email@hidden>
- Date: Fri, 2 Aug 2002 21:51:22 +1000
Can anyone lead me back through the fog to my high school maths formulae?
I'm trying to calculate points on the circumference of an arc in an
AppleWorks drawing frame. I want to place rotated text frames on the
circumference. I've been able to figure out that the angle of rotation
for the text frame is the tangent at that point on the circumference:
( 360 - start angle - [portion of arc angle] + rotation ) mod 360
Now I just need to know where to put them.
The useful properties I can obtain are the bounds, rotation, the start
angle and the angle of the arc ( an example of the record appears
below). How can I use this information to calculate the point at which
the arc starts, ends and several equidistant points in between?
for simplicity I'm assuming the arc is a section of a circle (it could
be an oval but my brain temperature rises at the thought)
{class:arc, index:1, bounds:{182.140625, 3.609375, 366.3828125,
187.8515625}, fill color:{65535, 52428, 65535}, fill pattern:2, fill
gradient:off, fill texture:off, name:"", pen color:{0, 0, 0}, pen
pattern:2, pen width:1.0, rotation:0, text wrap:no wrap, wrap gutter:5,
lock:read write, arc angle:231, start angle:194}
--
Malcolm Fitzgerald email@hidden
Database Manager
http://www.asauthors.org
The Australian Society of Authors ph: 02 93180877 fax: 02
93180530
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