I’m curious as to what the Matrix3_GetVector3FromCol function does. It takes a 9 item rotation matrix generated using SobGroup_GetCoordSys as input, followed by a number (integer?). It outputs a 3 item table. It’s only used once in Homeworld2.big, and the number (integer?) supplied in that instance is 2.
I’ve been comparing the output to a function I wrote myself called MatrixToEuler that I use to convert the 9 item rotation matrix to Euler rotation angles (degrees).
---------------- 0
test1 = {188.8147808906225, 270.371150272706, 171.1851246310184, }
test2 = {-0.006411552429199219, 4.878733307123184e-006, -0.9999794960021973, }
test1 = {173.1985523604548, 270.2960752906031, 186.8015422346737, }
test2 = {-0.005144715309143066, -3.241788363084197e-006, -0.9999868869781494, }
test1 = {179.427260373988, 78.31424545820225, 179.4832783557769, }
test2 = {-0.2025351524353027, -0.0007705204770900309, 0.9792746305465698, }
test1 = {188.8346554121517, 270.3722031845286, 171.1651943826657, }
test2 = {-0.006417155265808106, 5.88136026635766e-006, -0.9999793767929077, }
test1 = {180.4450021887515, 275.7783503179156, 179.497589778118, }
test2 = {-0.1006773710250855, 0.001041422481648624, -0.994918704032898, }
test1 = {180.4952922548052, 275.3133794663897, 179.4489174624701, }
test2 = {-0.09259819984436035, 0.001010864973068237, -0.9957029819488525, }
test1 = {186.9877122039639, 270.4805128025469, 173.1202109150914, }
test2 = {-0.008342266082763672, -0.00187945319339633, -0.9999635219573975, }
test1 = {180.2054416826993, 275.9009309577368, 179.7411342783645, }
test2 = {-0.102807879447937, 0.0009514261037111282, -0.9947007894515991, }
---------------- 1
test1 = {173.1994064271589, 270.2954136605744, 186.8006706415247, }
test2 = {-0.0006105884676799178, 0.9999998211860657, 1.958978828042746e-007, }
test1 = {180.4490215252623, 275.7783159966638, 179.4975898289904, }
test2 = {0.0008828198770061135, 0.9999992251396179, 0.0008872496546246111, }
test1 = {180.4952900245038, 275.3133794663897, 179.4489172424623, }
test2 = {0.0008906642906367779, 0.9999991655349731, 0.0009324386483058333, }
test1 = {186.4535774251502, 270.4788811305646, 173.5971174804992, }
test2 = {0.0009328959276899695, 0.9999991655349731, -0.0008885897696018219, }
test1 = {180.2054426081985, 275.900864438688, 179.7411281065259, }
test2 = {0.0004645047010853887, 0.999999463558197, 0.0009085778729058802, }
test1 = {184.9421435833924, 270.3679734482871, 175.057785022165, }
test2 = {0.0005532993236556649, 0.9999998211860657, -5.147885531187058e-007, }
test1 = {187.9226324563023, 270.3700943460584, 172.0772756880646, }
test2 = {0.0008922186680138111, 0.9999995827674866, -1.225474989041686e-006, }
test1 = {355.5374739138589, 88.68582201047637, 355.6028652603704, }
test2 = {-0.001758527127094567, 0.9999977946281433, 0.00116139161400497, }
---------------- 2
test1 = {184.9421002581398, 270.3679734482871, 175.0578275440619, }
test2 = {0.9999793767929077, -0.0005550594069063664, -0.006419062614440918, }
test1 = {180.449024801232, 275.7783159966638, 179.497588998159, }
test2 = {0.9949188828468323, -0.0007890170672908425, -0.1006768941879273, }
test1 = {180.4952900245038, 275.3133794663897, 179.4489172424623, }
test2 = {0.9957031011581421, -0.0008004941046237946, -0.09259986877441406, }
test1 = {186.4538292962583, 270.4792895688102, 173.5968603682616, }
test2 = {0.9999650120735169, -0.0009417437249794602, -0.00832521915435791, }
test1 = {180.2054423902984, 275.9008974859, 179.7411284071162, }
test2 = {0.9947012066841126, -0.0003686363925226033, -0.1028084754943848, }
test1 = {188.2200769231642, 270.371150272706, 171.7798245782523, }
test2 = {0.9999790191650391, -0.0009247140260413289, -0.006401181221008301, }
test1 = {173.1990579248786, 270.2954136605744, 186.8010324287363, }
test2 = {0.9999867081642151, 0.0006119778845459223, -0.00513148307800293, }
test1 = {178.4181829147256, 88.25773861595509, 178.4641951958206, }
test2 = {-0.9995377063751221, 0.000839274434838444, -0.03039205074310303, }
“test1” is the output of my own custom function. “test2” is the output of Matrix3_GetVector3FromCol. Each block corresponds to a different number supplied as the second parameter to Matrix3_GetVector3FromCol. I tried 0, 1 and 2.
I’ve been looking at the output and don’t see a correlation. I still can’t see what the function does.
[edit]
Maybe the numbers represent unit vectors pointing in the direction the ships are facing. But what is the integer for?
