Stabilizing footage after tracked

After you have tracked footage (scale and position), you can stabilize it with the following expression:

Anchor Point: (Paste in the tracked position keyframes)
Position: (Paste in the first tracked position keyframe (Single keyframe))
Scale:

start = 300.1255; //(first scale keyframe of track)
temp = (100*start)/(thisComp.layer("BG_Tracker").transform.scale[0]);
[temp, temp]

Rotation:
StartRot = -7.7137; //(first rotation keyframe of track)
r = thisComp.layer("BG_Tracker").transform.rotation;
StartRot - r;

Finding the Global Position in 3d of a Parented 3D Null

Trapcode Particular can use Position XY and Position Z as an emitter location, but it's not possible to just pickwhip a parented null's position, since that's just an offset from the parent layer.


For Particular, paste the following:


Position XY:
the3Dchild = thisComp.layer("Null 2"); posXY = the3Dchild.toWorld(the3Dchild.anchorPoint); [posXY[0], posXY[1]];



Position Z:
the3Dchild = thisComp.layer("Null 2"); posZ = the3Dchild.toWorld(the3Dchild.anchorPoint)[2];



For a plain old 3d Layer, we can use:



Position:
the3Dchild = thisComp.layer("Null 2"); the3Dchild.toWorld(the3Dchild.anchorPoint);


Scale:
the3Dparent = thisComp.layer("Null 1").transform.scale;
the3Dchild = thisComp.layer("Null 2").transform.scale;
[(the3Dchild[0] * the3Dparent[0])/100, (the3Dchild[1] * the3Dparent[1])/100, (the3Dchild[2] * the3Dparent[2])/100 ];

Rotation:
the3Dparent = thisComp.layer(Null 1").transform.rotation;
the 3Dchild = thisComp.layer("Null 2").transform.rotation;
the3Dparent + the3Dchild;

Converting After Effects 3D Camera Tracker to 2D Track

1) Track Camera
2) Select 2 track points and convert them to nulls
3) Create 2 additional nulls (2d)
4) Add expressions to the nulls:  L = thisComp.layer("Track Null 1");(L.toComp(L.anchorPoint))
5) Convert expressions to keyframes
6) Create a dummy 2 point track on layer.
7) Copy keyframes onto Attach Point
8) Apply track to an additional null.

Time to learn new software. Time to update my old model...

ply test

https://www.dropbox.com/s/3cziyxf3zua3d1s/Wolverine.ply

Video Test

 

 

Hi-Res Download

Assigning a seperate material to a selection of objects

Sometimes when I import .obj files, they consist of separate meshes with no materials assigned.  I wrote a super simple script to assign a new material to each mesh selected, and then it merges them all together, filter points (0 tolerance), quadralates it, and then matches the transforms to a different mesh.

VB Script:
set oSelection = Application.Selection 
for i = 0 to (oSelection.Count - 1) 
 ApplyShader "$XSI_DSPRESETS\Shaders\Material\Lambert.Preset", , , , siLetLocalMaterialsOverlap
 next
ApplyGenOp "MeshMerge", , oSelection , 3, siPersistentOperation, siKeepGenOpInputs
SetValue "polymsh.polymsh.mergemesh.tolerance", 0
TransferAllPropertiesAcrossGenOp "polymsh.polymsh.mergemesh", "polymsh", , True, True
TransferAllPropertiesAcrossGenOp "polymsh.polymsh.mergemesh", "polymsh", , True
CopyAnimationAcrossGenerator "polymsh.polymsh.mergemesh", 0
SetValue "polymsh.polymsh.mergemesh.inputreadregion", 0
DeleteGeneratorInputs "polymsh.polymsh.mergemesh"
MatchTransform "polymsh", "DrugCartel1", siSRT
SelectAllUsingFilter "Vertex", siCheckComponentVisibility
ApplyTopoOp "FilterPoints", "polymsh.pnt[*]", siUnspecified, siPersistentOperation
SetValue "polymsh.polymsh.filterpointsbydistancesop.distance", 0
SetValue "polymsh.polymsh.filterpointsbydistancesop.deletedoublepolygons", False
SetValue "polymsh.polymsh.filterpointsbydistancesop.collapsedoubleedges", False
ApplyTopoOp "Quadrangulate", "polymsh", siUnspecified, siPersistentOperation