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June 12, 2024 10:23
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After effects expressions and scripts collected from various authors and myself.
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| //Position | |
| L=thisComp.layer("Object center"); | |
| L.toWorld(L.effect(name)("3D Point")); | |
| //Scale | |
| L =thisComp.layer("Object center"); | |
| [L.transform.scale[0]/100*value[0],L.transform.scale[1]/100*value[1],L.transform.scale[2]/100*value[2]]; | |
| //Orientation | |
| L = thisComp.layer("Object center"); | |
| u = fromWorldVec(L.toWorldVec([1,0,0])); | |
| v = fromWorldVec(L.toWorldVec([0,1,0])); | |
| w = normalize(fromWorldVec(L.toWorldVec([0,0,1]))); | |
| sinb = clamp(w[0],-1,1); | |
| b = Math.asin(sinb); | |
| cosb = Math.cos(b); | |
| if (Math.abs(cosb) > .0005){ | |
| c = -Math.atan2(v[0],u[0]); | |
| a = -Math.atan2(w[1],w[2]); | |
| }else{ | |
| a = (sinb < 0 ? -1 : 1)*Math.atan2(u[1],v[1]); | |
| c = 0; | |
| } | |
| [radiansToDegrees(a),radiansToDegrees(b),radiansToDegrees(c)] |
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