This Grasshopper tutorial shows you how to use the vector dot product to test if two vectors face the same direction. In this example, points facing the front of a Rhino surface are used to form shapes, while points facing the back are ignored.
- [Instructor] In this video, we're going to switch gears…from working with the Ladybug plugin…and just work in Grasshopper and Rhino.…We're doing that to cover one more important vector concept…called the dot product.…So in Rhino, I've got the file…vector-dot-product.3dm open and in Grasshopper,…I've got the file 0120vector-dot-product.…So let's just take a look at what we've got here.…In Grasshopper I have a group of components…that I'm using to generate a random field of points.…And I've got a few inputs here,…one controlling the total number of points,…so I can dial it up or down,…one slider for the range of points in the X direction,…one for the range of points in the Y direction,…one setting the Lo point for the Z height,…and one setting the Hi point for the Z height.…
In Rhino, I've got one freeform surface.…What I'd like to do here…is to connect points in the random point field…that are facing the top of my surface…to the closest points on the surface.…And any points that are facing the bottom of the surface…
By the end of the course, you'll see how even basic literacy in Grasshopper can be applied to developing projects for art, manufacturing, architecture, and design.
- Working with algorithms
- Modeling a base profile
- Extruding elements
- Finishing an algorithm
- Planning for mass production
- Customizing Grasshopper
- Scripting with Python and Visual Basic .NET
- Modeling data with Ladybug
- Creating a tiling grid
- Tiling 3D objects
- Using reflection symmetry and mirroring to repeat tile
- Tessellating tile in any direction
Skill Level Beginner
1. Algorithmic Thinking
2. Modeling a Musical Instrument
3. Customizing Grasshopper
4. Modeling Climate Data with Ladybug
5. Tiling and Tessalation
6. Simulation and Form-Finding with Kangaroo
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