void model_addorreplacedata(model* m, char tag[], int vid, int alloctype, void* data)
{
modeldata* mdata;
int i;
int ni, nj, nk;
for (i = 0; i < m->ndata; ++i)
if (strcmp(tag, m->data[i].tag) == 0)
break;
mdata = &m->data[i];
if (i == m->ndata) {
if (m->ndata % NMODELDATA_INC == 0)
m->data = realloc(m->data, (m->ndata + NMODELDATA_INC) * sizeof(modeldata));
mdata->tag = strdup(tag);
mdata->vid = vid;
mdata->alloctype = alloctype;
m->ndata++;
} else
assert(mdata->alloctype == alloctype);
model_getvardims(m, mdata->vid, &ni, &nj, &nk);
if (mdata->alloctype == ALLOCTYPE_1D)
memcpy(mdata->data, data, nk * sizeof(float));
else if (mdata->alloctype == ALLOCTYPE_2D)
mdata->data = copy2d(data, nj, ni, sizeof(float));
else if (mdata->alloctype == ALLOCTYPE_3D)
mdata->data = copy3d(data, nk, nj, ni, sizeof(float));
else
enkf_quit("programming error");
}
static FLT RunOpti( SurviveObject * hmd, PoserDataFullScene * fs, int lh, int print, FLT * LighthousePos, FLT * LighthouseQuat )
{
int i, p;
FLT UsToTarget[3];
FLT LastUsToTarget[3];
FLT mux = .9;
quatsetnone( LighthouseQuat );
FLT * hmd_points = hmd->sensor_locations;
FLT * hmd_normals = hmd->sensor_normals;
int dpts = hmd->nr_locations;
int first = 1, second = 0;
//First check to see if this is a valid viewpoint.
//If a sensor is pointed away from where we are testing a possible lighthouse position.
//BUT We get data from that light house, then we KNOW this is not a possible
//lighthouse position.
for( p = 0; p < dpts; p++ )
{
int dataindex = p*(2*NUM_LIGHTHOUSES)+lh*2;
if( fs->lengths[p][lh][0] < 0 || fs->lengths[p][lh][1] < 0 ) continue;
FLT me_to_dot[3];
sub3d( me_to_dot, LighthousePos, &hmd_points[p*3] );
FLT dot = dot3d( &hmd_normals[p*3], me_to_dot );
if( dot < -.01 ) { return 1000; }
}
int iters = 6;
//Iterate over a refinement of the quaternion that constitutes the
//lighthouse.
for( i = 0; i < iters; i++ )
{
first = 1;
for( p = 0; p < dpts; p++ )
{
int dataindex = p*(2*NUM_LIGHTHOUSES)+lh*2;
if( fs->lengths[p][lh][0] < 0 || fs->lengths[p][lh][1] < 0 ) continue;
//Find out where our ray shoots forth from.
FLT ax = fs->angles[p][lh][0];
FLT ay = fs->angles[p][lh][1];
//NOTE: Inputs may never be output with cross product.
//Create a fictitious normalized ray. Imagine the lighthouse is pointed
//straight in the +z direction, this is the lighthouse ray to the point.
FLT RayShootOut[3] = { sin(ax), sin(ay), 0 };
RayShootOut[2] = sqrt( 1 - (RayShootOut[0]*RayShootOut[0] + RayShootOut[1]*RayShootOut[1]) );
FLT RayShootOutWorld[3];
quatnormalize( LighthouseQuat, LighthouseQuat );
//Rotate that ray by the current rotation estimation.
quatrotatevector( RayShootOutWorld, LighthouseQuat, RayShootOut );
//Find a ray from us to the target point.
sub3d( UsToTarget, &hmd_points[p*3], LighthousePos );
if( magnitude3d( UsToTarget ) < 0.0001 ) { continue; }
normalize3d( UsToTarget, UsToTarget );
FLT RotatedLastUs[3];
quatnormalize( LighthouseQuat, LighthouseQuat );
quatrotatevector( RotatedLastUs, LighthouseQuat, LastUsToTarget );
//Rotate the lighthouse around this axis to point at the HMD.
//If it's the first time, the axis is synthesized, if it's after that, use most recent point.
FLT ConcatQuat[4];
FLT AxisToRotate[3];
if( first )
{
cross3d( AxisToRotate, RayShootOutWorld, UsToTarget );
if( magnitude3d(AxisToRotate) < 0.0001 ) break;
normalize3d( AxisToRotate, AxisToRotate );
//Don't need to worry about being negative, cross product will fix it.
FLT RotateAmount = anglebetween3d( RayShootOutWorld, UsToTarget );
quatfromaxisangle( ConcatQuat, AxisToRotate, RotateAmount );
quatnormalize( ConcatQuat, ConcatQuat );
}
else
{
FLT Target[3];
FLT Actual[3];
copy3d( AxisToRotate, LastUsToTarget );
//Us to target = normalized ray from us to where we should be.
//RayShootOut = where we would be pointing.
sub3d( Target, UsToTarget, AxisToRotate ); //XXX XXX XXX WARNING THIS MESSES STUFF UP.
sub3d( Actual, RayShootOutWorld, AxisToRotate );
if( magnitude3d( Actual ) < 0.0001 || magnitude3d( Target ) < 0.0001 ) { continue; }
normalize3d( Target, Target );
normalize3d( Actual, Actual );
cross3d( AxisToRotate, Actual, Target ); //XXX Check: AxisToRotate should be equal to LastUsToTarget.
if( magnitude3d( AxisToRotate ) < 0.000001 ) { continue; }
normalize3d( AxisToRotate,AxisToRotate );
//printf( "%f %f %f === %f %f %f : ", PFTHREE( AxisToRotate ), PFTHREE( LastUsToTarget ) );
FLT RotateAmount = anglebetween3d( Actual, Target ) * mux;
//printf( "FA: %f (O:%f)\n", acos( dot3d( Actual, Target ) ), RotateAmount );
quatfromaxisangle( ConcatQuat, AxisToRotate, RotateAmount );
quatnormalize( ConcatQuat, ConcatQuat );
}
quatnormalize( ConcatQuat, ConcatQuat );
quatnormalize( LighthouseQuat, LighthouseQuat );
quatrotateabout( LighthouseQuat, ConcatQuat, LighthouseQuat ); //Checked. This appears to be
mux = mux * 0.94;
if( second ) { second = 0; }
if( first ) { first = 0; second = 1; }
copy3d( LastUsToTarget, RayShootOutWorld );
}
}
//Step 2: Determine error.
FLT errorsq = 0.0;
int count = 0;
for( p = 0; p < dpts; p++ )
{
int dataindex = p*(2*NUM_LIGHTHOUSES)+lh*2;
if( fs->lengths[p][lh][0] < 0 || fs->lengths[p][lh][1] < 0 ) continue;
//Find out where our ray shoots forth from.
FLT ax = fs->angles[p][lh][0];
FLT ay = fs->angles[p][lh][1];
FLT RayShootOut[3] = { sin(ax), sin(ay), 0 };
RayShootOut[2] = sqrt( 1 - (RayShootOut[0]*RayShootOut[0] + RayShootOut[1]*RayShootOut[1]) );
//Rotate that ray by the current rotation estimation.
quatrotatevector( RayShootOut, LighthouseQuat, RayShootOut );
//Point-line distance.
//Line defined by LighthousePos & Direction: RayShootOut
//Find a ray from us to the target point.
sub3d( UsToTarget, &hmd_points[p*3], LighthousePos );
FLT xproduct[3];
cross3d( xproduct, UsToTarget, RayShootOut );
FLT dist = magnitude3d( xproduct );
errorsq += dist*dist;
//if( print ) printf( "%f (%d(%d/%d))\n", dist, p, cd->ctsweeps[dataindex+0], cd->ctsweeps[dataindex+1] );
}
if( print ) printf( " = %f\n", sqrt( errorsq ) );
return sqrt(errorsq);
}
int PoserCharlesSlow( SurviveObject * so, PoserData * pd )
{
PoserType pt = pd->pt;
SurviveContext * ctx = so->ctx;
DummyData * dd = so->PoserData;
if( !dd ) so->PoserData = dd = malloc( sizeof( DummyData ) );
switch( pt )
{
case POSERDATA_IMU:
{
PoserDataIMU * imu = (PoserDataIMU*)pd;
//printf( "IMU:%s (%f %f %f) (%f %f %f)\n", so->codename, imu->accel[0], imu->accel[1], imu->accel[2], imu->gyro[0], imu->gyro[1], imu->gyro[2] );
break;
}
case POSERDATA_LIGHT:
{
PoserDataLight * l = (PoserDataLight*)pd;
//printf( "LIG:%s %d @ %f rad, %f s (AC %d) (TC %d)\n", so->codename, l->sensor_id, l->angle, l->length, l->acode, l->timecode );
break;
}
case POSERDATA_FULL_SCENE:
{
PoserDataFullScene * fs = (PoserDataFullScene*)pd;
int p;
FLT * hmd_points = so->sensor_locations;
for( p = 0; p < so->nr_locations; p++ )
{
printf( "%f %f %f\n", hmd_points[p*3+0], hmd_points[p*3+1], hmd_points[p*3+2] );
}
int lh, cycle;
FLT dz, dy, dx;
for( lh = 0; lh < 2; lh++ )
{
FLT beste = 1e20;
FLT LighthousePos[3];
FLT LighthouseQuat[4];
LighthousePos[0] = 0;
LighthousePos[1] = 0;
LighthousePos[2] = 0;
LighthouseQuat[0] = 1;
LighthouseQuat[1] = 0;
LighthouseQuat[2] = 0;
LighthouseQuat[3] = 0;
FLT bestxyz[3];
memcpy( bestxyz, LighthousePos, sizeof( LighthousePos ) );
//STAGE1 1: Detemine vectoral position from lighthouse to target. Does not determine lighthouse-target distance.
//This also is constantly optimizing the lighthouse quaternion for optimal spotting.
FLT fullrange = 5; //Maximum search space for positions. (Relative to HMD)
//Sweep whole area 30 times
for( cycle = 0; cycle < 30; cycle ++ )
{
//Adjust position, one axis at a time, over and over until we zero in.
{
FLT bestxyzrunning[3];
beste = 1e20;
FILE * f;
if( cycle == 0 )
{
char filename[1024];
sprintf( filename, "calinfo/%d_lighthouse.dat", lh );
f = fopen( filename, "wb" );
}
//We split the space into this many groups (times 2) and
//if we're on the first cycle, we want to do a very linear
//search. As we refine our search we can then use a more
//binary search technique.
FLT splits = 4;
if( cycle == 0 ) splits = 32;
if( cycle == 1 ) splits = 13;
if( cycle == 2 ) splits = 10;
if( cycle == 3 ) splits = 8;
if( cycle == 4 ) splits = 5;
//Wwe search throug the whole space.
for( dz = -fullrange; dz < fullrange; dz += fullrange/splits )
for( dy = -fullrange; dy < fullrange; dy += fullrange/splits )
for( dx = -fullrange; dx < fullrange; dx += fullrange/splits )
{
//Specificially adjust one axis at a time, searching for the best.
memcpy( LighthousePos, bestxyz, sizeof( LighthousePos ) );
LighthousePos[0] += dx; //These are adjustments to the "best" from last frame.
LighthousePos[1] += dy;
LighthousePos[2] += dz;
FLT ft;
//Try refining the search for the best orientation several times.
ft = RunOpti(so, fs, lh, 0, LighthousePos, LighthouseQuat);
if( cycle == 0 )
{
FLT sk = ft*10.;
if( sk > 1 ) sk = 1;
uint8_t cell = (uint8_t)((1.0 - sk) * 255);
FLT epsilon = 0.1;
if( dz == 0 ) { /* Why is dz special? ? */
if ( dx > -epsilon && dx < epsilon )
cell = 255;
if ( dy > -epsilon && dy < epsilon )
cell = 128;
}
fprintf( f, "%c", cell );
}
if( ft < beste ) { beste = ft; memcpy( bestxyzrunning, LighthousePos, sizeof( LighthousePos ) ); }
}
if( cycle == 0 )
{
fclose( f );
}
memcpy( bestxyz, bestxyzrunning, sizeof( bestxyz ) );
//Print out the quality of the lock this time.
FLT dist = sqrt(bestxyz[0]*bestxyz[0] + bestxyz[1]*bestxyz[1] + bestxyz[2]*bestxyz[2]);
printf( "%f %f %f (%f) = %f\n", bestxyz[0], bestxyz[1], bestxyz[2], dist, beste );
}
//Every cycle, tighten up the search area.
fullrange *= 0.25;
}
if( beste > 0.1 )
{
//Error too high
SV_ERROR( "LH: %d / Best E %f Error too high\n", lh, beste );
return -1;
}
RunOpti(so, fs, lh, 1, LighthousePos, LighthouseQuat);
ctx->bsd[lh].PositionSet = 1;
copy3d( ctx->bsd[lh].Pose.Pos, LighthousePos );
quatcopy( ctx->bsd[lh].Pose.Rot, LighthouseQuat );
#define ALT_COORDS
#ifdef ALT_COORDS
so->FromLHPose[lh].Pos[0] = LighthousePos[0];
so->FromLHPose[lh].Pos[1] = LighthousePos[1];
so->FromLHPose[lh].Pos[2] = LighthousePos[2];
so->FromLHPose[lh].Rot[0] =-LighthouseQuat[0];
so->FromLHPose[lh].Rot[1] = LighthouseQuat[1];
so->FromLHPose[lh].Rot[2] = LighthouseQuat[2];
so->FromLHPose[lh].Rot[3] = LighthouseQuat[3];
quatrotatevector( so->FromLHPose[lh].Pos, so->FromLHPose[lh].Rot, so->FromLHPose[lh].Pos );
#else
so->FromLHPose[lh].Pos[0] = LighthousePos[0];
so->FromLHPose[lh].Pos[1] = LighthousePos[1];
so->FromLHPose[lh].Pos[2] = LighthousePos[2];
so->FromLHPose[lh].Rot[0] = LighthouseQuat[0];
so->FromLHPose[lh].Rot[1] = LighthouseQuat[1];
so->FromLHPose[lh].Rot[2] = LighthouseQuat[2];
so->FromLHPose[lh].Rot[3] = LighthouseQuat[3];
#endif
}
return 0;
}
case POSERDATA_DISASSOCIATE:
{
free( dd );
so->PoserData = 0;
//printf( "Need to disassociate.\n" );
break;
}
}
return -1;
}