Hello,
according to my posting here
viewtopic.php?f=32&t=3162
I would like to discuss this missing circle option as a feature request.
Up to know it´s impossible to draw a circle by the given combination: point, tangent and radius. I would like this to be added to the circle options.
(A workaround has been presented by andrew, see link)
Feature Request: New circle option (point, tangent, radius)
Moderator: andrew
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RungeZipperer
- Newbie Member
- Posts: 5
- Joined: Wed Nov 05, 2014 10:11 am
Re: Feature Request: New circle option (point, tangent, radi
Such a tool is certainly possible and desirable.
However, I'd like to point out that auxiliary constructions (as shown here) are often required and should not be considered workarounds but normal and a good practice.
Let's say you want to draw a circle with radius 2, and its center 50 units away from point A and 30 units away from point B. There is no special tool in QCAD for that very specific case. But draw a circle with R=50 around A and one with R=30 around B and you have the two possible centers of your circle as one of the intersection points of the two circles.
This is just one of many examples where basic geometry gets the job done just as effectively as having a special tool.
Auxiliary constructions like that should be done without hesitation. These constructions are usually placed on a separate layer (e.g. 'aux' or 'construction') which is switched off for printing. Rays and XLines are also often used for auxiliary constructions, since the length of construction lines is often irrelevant since it's the intersection points which are needed.
However, I'd like to point out that auxiliary constructions (as shown here) are often required and should not be considered workarounds but normal and a good practice.
Let's say you want to draw a circle with radius 2, and its center 50 units away from point A and 30 units away from point B. There is no special tool in QCAD for that very specific case. But draw a circle with R=50 around A and one with R=30 around B and you have the two possible centers of your circle as one of the intersection points of the two circles.
This is just one of many examples where basic geometry gets the job done just as effectively as having a special tool.
Auxiliary constructions like that should be done without hesitation. These constructions are usually placed on a separate layer (e.g. 'aux' or 'construction') which is switched off for printing. Rays and XLines are also often used for auxiliary constructions, since the length of construction lines is often irrelevant since it's the intersection points which are needed.
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RungeZipperer
- Newbie Member
- Posts: 5
- Joined: Wed Nov 05, 2014 10:11 am
Re: Feature Request: New circle option (point, tangent, radi
I do agree that there will always be auxiliary constructions and you can´t cover all possible cases in a tool like QCAD. This would in addition lead to a more confusing than helping GUI I guess.
Nevertheless in this specific case I think that my proposal would lead to a consistent way of modeling because all other circle-tools are already there except this one.
Nevertheless in this specific case I think that my proposal would lead to a consistent way of modeling because all other circle-tools are already there except this one.
Re: Feature Request: New circle option (point, tangent, radi
Sounds good, please add a feature request here:RungeZipperer wrote:Nevertheless in this specific case I think that my proposal would lead to a consistent way of modeling because all other circle-tools are already there except this one.
http://www.ribbonsoft.com/bugtracker/
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