...
| Name | Index |
|---|---|
| "Particle UV" | 0 |
| "Particle UW" | 1 |
| "Particle VW" | 2 |
| "Velocity Modulus" | 3 |
| "Velocity Vx" | 4 |
| "Velocity Vy" | 5 |
| "Velocity Vz" | 6 |
| "Velocity Vx Vy" | 7 |
| "Velocity Vx Vz" | 8 |
| "Velocity Vy Vz" | 9 |
| "Force Modulus" | 10 |
| "Force Fx" | 11 |
| "Force Fy" | 12 |
| "Force Fz" | 13 |
| "Force Fx Fy" | 14 |
| "Force Fx Fz" | 15 |
| "Force Fy Fz" | 16 |
| "Vorticity Modulus" | 17 |
| "Vorticity wx" | 18 |
| "Vorticity wy" | 19 |
| "Vorticity wz" | 20 |
| "Vorticity wx wy" | 21 |
| "Vorticity wx wz" | 22 |
| "Vorticity wy wz" | 23 |
| "Normal Nx" | 24 |
| "Normal Ny" | 25 |
| "Normal Nz" | 26 |
| "Normal Nx Ny" | 27 |
| "Normal Nx Nz" | 28 |
| "Normal Ny Nz" | 29 |
| "No. neighbors" | 30 |
| "Age" | 31 |
| "Isolation Time" | 32 |
| "Viscosity" | 33 |
| "Density" | 34 |
| "Pressure" | 35 |
| "Mass" | 36 |
| "Temperature" | 37 |
| "ID" | 38 |
"FileName"
Name of the file that contains particles data. It is a NULL terminated string.
...
Particle data can come whether in a file or internally stored in the .mxs file. If a filename is not supplied, the extension checks for internal data, and if successful, loads it. This parameter is a linear array of floats xyzxyzxyzxyzxyz...., whose length is 3*numberOfParticles.
Example:
| Code Block | ||
|---|---|---|
| ||
int numParticles = 4;
float points[ 3*4 ];
for( int idx = 0; idx < numParticles; idx++ )
{
points[ 3*idx + 0 ] = (float)idx;
points[ 3*idx + 1 ] = (float)idx;
points[ 3*idx + 2 ] = (float)idx;
}
extParam->setFloatArray( "PARTICLE_POSITIONS", points, 3*numParticles ); |
"PARTICLE_SPEEDS"
Linear array of particle speeds, floating point numbers, needed to enable calculation of motion blur: VxVyVzVxVyVzVxVyVz...., whose length is 3*numberOfParticles.
Example:
| Code Block | ||
|---|---|---|
| ||
int numParticles = 4;
float speeds[ 3*4 ];
for( int idx = 0; idx < numParticles; idx++ )
{
speeds[ 3*idx + 0 ] = (float)idx;
speeds[ 3*idx + 1 ] = (float)idx;
speeds[ 3*idx + 2 ] = (float)idx;
}
extParam->setFloatArray( "PARTICLE_SPEEDS", speeds, 3*numParticles ); |
"PARTICLE_RADII"
Linear array of particle radii, floating point numbers: rrrrrrr.... The length of this array can be either 1 or numParticles. If only one radius is given , it is applied to all the particles, otherwise each particle gets its own radius.
Example:
| Code Block | ||
|---|---|---|
| ||
//Each particle its own radius
int numParticles = 4;
float radius[ 4 ];
for( int idx = 0; idx < numParticles; idx++ )
{
radius[ idx ] = (float)idx + 0.01f;
}
extParam->setFloatArray( "PARTICLE_RADII", radius, numParticles );
//One radius for all particles
float r = 0.4f;
setFloatArray( "PARTICLE_RADII", &r, 1 ); |
"PARTICLE_IDS"
Linear array of particle IDs, needed to enable coherent calculation of multipoint. It is an integer array.
Example:
| Code Block | ||
|---|---|---|
| ||
int numParticles = 3;
int ids[ 3 ];
ids[ 0 ] = 23;
ids[ 1 ] = 9;
ids[ 2 ] = 51;
extParam->setIntArray( "PARTICLE_IDS", ids, numParticles ); |