generative modeling for Rhino
point and sphere :)
Hi, I'm trying to build a control point on the
field inside the sphere and beyond. I can not:(, please help.
Views: 383
Replies to This Discussion
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Permalink Reply by Danny Boyes on -
hi alex, i don't understand the question would you expand it a bit. maybe include a sketch or a file please.
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Permalink Reply by Alex on -
1,1,1 is the point on the sphere ?!
- Attachments:
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point-1_73.bmp, 1 MB
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Permalink Reply by Alex on
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I can not understand why the point x = 1, y = 1, z = 1 (point2.bmp)
outside the sphere? - Attachments:
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point.bmp, 1.1 MB
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point2.bmp, 1.1 MB
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Permalink Reply by wrogirzymian on -
Why would it be inside?
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Permalink Reply by Brian Harms on -
a point at 1,1,1 is about 1.73 units away from 0,0,0. Since 1.73 > sphere radius of 1, it is outside the sphere.
Points like:
0,0,1
0,1,0
1,0,0
Are all inside the sphere (or rather on the sphere, not sure if that counts).
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Permalink Reply by Mateusz Zwierzycki on -
they are in sphere surface domain :P
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Permalink Reply by Brian Harms on
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the point x = 1, y = 1, z = 1 is neither inside nor on a sphere with an origin of 0,0,0 and a radius of 1. What is it that you are trying to do?
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Permalink Reply by Brian Harms on
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you can do a variety of things to put a point on a sphere, but you can never have a point at 1,1,1 be on a sphere with a radius of 1 at origin 0,0,0.
You could:
Use brep closest point to find the closest point on the sphere to 1,1,1
draw a line from the origin to 1,1,1 and intersect it with the sphere
use the evaluate surface component to create one or more points on the sphere
etc.
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Permalink Reply by Brian Harms on
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I'm trying to read between the lines here... maybe you want to create a point from x,y,and z values that creates a sphere with a radius equal to the distance between 0 and the point? like so:
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