Join Chris Reilly for an in-depth discussion in this video Working with attractor points, part of Learning Grasshopper.
…In dynamic systems like our Grasshopper definitions,…there's a concept of something called an Attractor,…which will tend to pull elements of that system towards a certain value.…A great example of an attractor from physics,…is the gravitational field of a planet.…Now, a planet is literally an attractor in that,…it attracts things to its surface by its gravitational pull.…But it also behaves like an attractor in Grasshopper,…because its pull drops off over distance.…In this exercise file,…we're using a single point captured from Rhino to act as an attractor.…The point has a field of influence over this grid of circles, and…that's shown by the larger circle centered on the point.…Inside that field, the circles are scaled down in…proportion with their distance to the point, and as I move the point around.…
We can see how it's properties as an attractor affect the field of circles.…So let's walk through how this Grasshopper definition is set up.…There are four basic steps to the algorithm.…First I'll make a grid of circles, next I'll define a point from Rhino.…
- What is Grasshopper?
- What's an algorithm?
- Setting input data
- Using data matching
- Looking at mathematical and logical functions
- Analyzing curves and surface data
- Working with transformations
- Manipulating the Data Tree
Skill Level Appropriate for all
2. Working in Grasshopper
3. Math and Logic Functions
4. Curves and Surfaces
6. Data Tree
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