10.2.16. VR Application: Blender
DESCRIPTION
This tutorial introduces you to how to use Blender for Virtual Reality (VR) applications.
This exercise is using the 3.6.2 LTS version of Blender.
Blender website: https://www.blender.org/download/.
Oculus website: https://www.meta.com/quest/setup/.
8.1.30. planar quads
DESCRIPTION
This powerful exercise allows you to plastically modify a given mesh, and then smoothen and convert it into a mesh made from fully planar quad.
PROCEDURE
1.Flattens each of the quads in a mesh.
2.Equalises the diagonal length of each of the quads.
3.Plastic anchor to prevent drift.
4.ClampLength keeps the distance between 2 points between given bounds but applies no force when the distance is within these limits.
5.Uniform Laplacian smoothing rounds any sharp features of a mesh.
This exercise is using Grasshopper version 1.0.0007
References: Daniel Piker, Kangaroo Physics (by Daniel Piker), https://www.food4rhino.com/en/app/kangaroo-physics, Accessed August 6, 2020
1.3.14. medial axis
DESCRIPTION
The “voronoi” button is probably the most widely and inappropriately used and abused function standardly available in Grasshopper. One of its most useful applications, however, is to derive curve’s medial axis. This is the centreline that can be seen as the “spine” of the geometry. Especially e.g. in animation these curves are useful to create the animated skeletons that have the geometry as a skin wrapped around them.
This exercise is using Grasshopper version 1.0.0007
1.3.13. Mesh coloration by proximity to pointcloud
DESCRIPTION
We now expand the previous exercise even further by creating a “Geometry Pipeline” that automatically reads all points on three separate layers, each with a different colour assigned. From this Point Cloud we find the closest three points only. We identify their associated colours, and use the distance to these points and their colour values to define the eventual mesh colouration.
Note the use of the “index of closest point” parameter coming from the “closest points” button. This number defines for each mesh vertex the indices of the points in the point cloud that are closest to it. Since we have created a list of colour values as long as the list of points in the point cloud, we can use these indices to extract the correct colours associated with the closest points.
This exercise is using Grasshopper version 1.0.0007
Software
Plugins
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course files
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1.3.12. Mesh coloration by proximity
DESCRIPTION
This exercise uses three points, each with their own colour, to define the mesh colouration. Each mesh vertex calculates its distance to all three points and calculates a weighted average between their associated colours to define its own RGB-values.
This exercise is using Grasshopper version 1.0.0007
1.3.11. Mesh coloration
DESCRIPTION
This exercise uses the z-values of mesh vertexes as a driver for the mesh colouration.
This exercise is using Grasshopper version 1.0.0007
1.3.10. Panel Spreader
DESCRIPTION
This exercise approximates the spreading of panels with different widths into a limited area. Here we do not exactly assess whether or not a panel overlaps with the border, as is done in “Panel Spreader (2)”. Instead, partial results of the mass addition of the individual panel widths are
used. The placement row is equal to the amount of times the board width fits in this number.
This exercise is using Grasshopper version 1.0.0007
1.3.09. Data Snapping
DESCRIPTION
Continuous data of any type can be ‘snapped’ to a predefined number of values. This allows the perfectly smooth to be replaced with a calculated stepped approximation of reduced complexity, where the number of steps is a variable. Applications can e.g. ease fabrication implementation.
This exercise is using Grasshopper version 1.0.0007
1.3.08. Randomness Gradient
DESCRIPTION
This exercise uses a graph-mapper to distribute two types of facade panels. The height of each panel is mapped onto a graph. For each panel, if a random number between 0 and 1 falls above that value, then panel type A is used. If not, then panel type B is used.
This exercise is using Grasshopper version 1.0.0007
1.3.07. percentage-based randomness
DESCRIPTION
This exercise randomly distributes 2 types of facade panels onto a surface. It does this by picking a random number between 0 and 100 for every panel, checking whether or not that is more than a variable percentage, and then assigning panel type A or B to it.
This exercise is using Grasshopper version 1.0.0007
