Tangent between a curve and a circle

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Permalink Reply by David Rutten on September 18, 2014 at 3:45pm

Attachments:

• rotate.gh, 6 KB

Permalink Reply by WT4 on September 19, 2014 at 2:24am

HI David

 

Thank you for this.  I tried it but maybe I do not understand how the genome component works but how do you choose the closest solution after the solve is finished?  On mine the curve swings away from the circle whilst the slider value changes but it seems to be searching around angles which are too far from the required angle of about -50 degrees.  I am using the latest version of grasshopper.

 

Regards

William 

Permalink Reply by David Rutten on September 19, 2014 at 4:15am

I set it up for 2 full rotations, so it should find one of the possible solutions in any case. There are always at least two solutions, sometimes more if the curve is very wobbly.

By default Galapagos tries to maximize the fitness. You can click on the plus and minus signs in the Galapagos options to switch between minimize and maximize, but in this case I had to specifically enter the value zero as a target.

If you upload your file I can see why it's not working as expected.

Permalink Reply by WT4 on September 21, 2014 at 9:43pm

Hi David

Finally got it working. Could not figure out at first where to set the target of zero. Then found accidentally that I set it in the maximum/minimum box.

Many thanks.

William