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Test: Helicopter - Dynamic Grass

3/12/2011

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Included in this exercise: Locators constrained to the surface (Y Axis) and between 2 points (XZ Axis), helicopter and a parented null/locator below the surface. This method could be used to assign a radial and turbulence field to the surface with their magnitude controlled by a "distance-between" utility measuring between the helicopter and the locator at the surface.

Another approach. Again with a locator at the helicopter and parented null underneath the surface of geometry. (I have not been able to find a way to set up an "aiming" point which will use the rotation from the helicopter to control a point on the surface.) With those two points in place constraining in XZ a NURB circle (curve) which has been projected on the surface of the object. This projected curve can be used to emit particles which, once assigned a "per-vertex" radial force, will affect the hair system.

Theoretical approach. One which I did not take the time to flesh out, but is involving just particles emitted from the helicopter (potentially the best possible solution.) With a nice lifespan indicative of the force generated by rotors. Setting up an interaction that when the [directional emission] contacts the surface, new particles are produced which effect the hair system. (most likely with a per-vertex radial field).

A rough video of my work is coming this afternoon. (I've been rendering all night and getting weird warnings which I need to look into fixing.)
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