Notes:
Wobble demo
Perturbates a surface along its normal and then perturbs the normals (to be used with reflections and/or lighting)
For position perturbance the formula is as follows:
f = POSAmplitude * sin (2 * PI / Period * (SimulationTime - TexCoordU * USpeed - TexCoordV * VSpeed);
P = P + N * f;
For normals perturbance the formula is as follows:
f = NORAmplitude * sin (2 * PI / Period * (SimulationTime - TexCoordU * USpeed - TexCoordV * VSpeed);
N.x = N.x + f;
You can edit the effect settings by modifying the input.dat file
the default input.dat file is as follows:
teapot <- the base name of the mesh
2.0 <- the speed in the U direction
2.0 <- the speed in the V direction
2.0 <- the position amplitude
0.07 <- the normal amplitude
2.0 <- the period of the wobble function
Note:
This effect is based on a sine function and uses as phase the texture coordinates. So cracks will apear when the texture is not continous (this does not mean when a texture is tiled, unless the U and V speed are not multiples of the period).
Extra commands:
* select button switches to wireframe,
* start button switches the texture on/off
* left analog stick moves in the x/y plane
* L1/L2 moves in the z direction
* right analog stick rotates
Have fun with it ;)
Changes:
|
