02 Simple Modeling for Wind Force

Tutorial by:

Hwan Kim (kimx3101@umn.edu)

Source: www.grasshopper3d.com/group/kangaroo/page/example-files

*For this tutorial, we also need "Weaverbirds" plug-in.

Simplified Process

Step 01: Make a Mesh and select it as geometry.

Step 02: Convert the geometry to three types of acting points for wind force, spring force, and gravity.

Step 03: Connect the acting points to the three forces.

Step 04: Set the anchor points.

Step 05: Start Kangaroo Engine.

Step 06: Make a mesh by using new geometry of Kangaroo Engine.

Step 01

We need to make the mesh in Rhino and set the mesh as the geometry in Grasshopper.

Command - Mesh

Step 02

We should think about relationship between geometry and forces,

because the each forces require the specific acting points or lines of force.

First of all, the Kangaroo engine needs mesh vertices as the geometry for the engine.

Command - mComp

Wind force is applied to three points of each triangular units of the mesh.

Command - wbFacepolys, Explode, Flip, Bang

Spring force is applied to a wire frame of the mesh.

Command - wbEdges

Gravity is applied to all of vertices of the mesh.

Command - wbVertices, Unit Z, Uforce

We need to set the anchor points on the edge of the mesh.

Command - Point

Finally, We can start the Kangaroo engine and create the final green mesh.

Command - Kangaroo Engine, Boolean Toggle, Timer

And also we can adjust wind direction by using "MD slider".

Command - MD Slider