Author: Peter Salisbury Date: To: Hampshire LUG Discussion List Subject: Re: [Hampshire] Basic CAD software?
On 17 February 2010 13:26, Victor Churchill <victorchurchill@???> wrote: > On 17 February 2010 12:04, Hugo Mills <hugo@???> wrote:
>> On Wed, Feb 17, 2010 at 09:49:49AM +0000, Steve wrote:
>>> Hi List,
>>>
>>> Could anyone point me in the direct of some software that would allow me
>>> to import a digital photo (JPEG), draw some lines on the image and then
>>> measure the angles between them?
>
>> You can do this with The Gimp and a calculator. Load up your image,
>> go to Tools -> Measure, and drag out one of the lines you want to
>> compare. The (x,y) pixel distances and angle (relative to horizontal)
>> will be shown in the info bar at the bottom of the window. Do this
>> with the second line, and add/subtract the two angles as appropriate
>> to get the angle between the two lines.
>>
>
> That's very neat Hugo. When Steve posted I thought about suggesting
> 'gimp' for the importing+drawing but missed the measurement angle (so
> to speak)
>
OpenOffice Draw also allows you to draw lines on top of an image and
has the advantage of the lines being modifiable later (plus all the
goodies associated with a high-end vector object oriented graphics
package).
