Found a cool tute on a wander behaviour for my cat simulator
http://gamedevelopment.tutsplus.com/tutorials/understanding-steering-be…
This is a classic Ordinary Differential Equation for solving 2d position and velocity.
I was thinking about this.
And it looks like a lot of steps to produce a fairly continuous angular rotation with a random nature to it.
Continuous is both its first and second derivative.
Let me take you back, way back to year 9 in high school in 1985, where I was introduced to light and photography and the inverse squared rule of light decay.
In black and white photography, you expose of piece of photosensitive paper to light for a period of time using an enlarger then go an develop that exposure with a chemical reaction in a tray and the darkness develops in front of your eyes.
The script that saved my bacon:
Which used an Add/Multiply node instead of a multiLayer texture.
Works with Mental Ray and in inbuilt renderer, but with 3delight and normal maps not so much.
Here is the STL
Based on a few conversations online I have determined there is a 3d printer at the Grote St library at the Adelaide City Council for free use.
So I knocked up a quick model in Wings3d.
In hidsight, baking a lookup table of vectors and the spherical harmonics, might lead to artifacts, but with 1024 samples it doesnt look too bad
We all know that OpenEXR has pretty much standardised the storage formate for image planes
But now there are few new contenders for
Its Sunday afternoon and its time to write some code, this is pretty much lifted verbatim from Robin Green's 2003 Paper: Spherical Harmonic Lighting the Gritty Details
So for the next trick is to put this as a large table into a shader so I can bake out a set of 9 cooefficients (4 bands) for Shadowed Diffuse Transfer, these I will store per sample in a point cloud to be looked up during a shading stage.
Here is the end result:
First things first I need a model to work with
Before I start I wanted to explain why I think this is a classic exercise
If you can represent a mesh in OBJ text format you pretty much understand how the data polygonal data exists in the package you are using and you have enough skill to pack it into a data structure to put it to disk.
So here is what you should get a good understanding of:
