从blender导出模型以在ios应用程序中使用

Question

我在blender中创建了一个模型，我将其导出为.obj文件。为了让open gl渲染三角形，我相信坐标必须是逆时针的。 blender默认是这样做的，还是我需要编写一些代码来重新排序顶点？

运行我的应用程序后，我得到以下内容。我认为这可能是因为顶点的顺序导致它们被剔除？

这是我的坐标

0.741670,0.189542,0.333219,0.736962,0.176234,0.092931,0.7737054，-0.036978,0.135064,0.745167，-0.021633,0.348303,0.955526,0.188491,0.327129,0.950747,0.177176,0.084729,0.952274，-0.036216,0.100027,0.953441， -0.028794,0.336081,0.721120,0.174601，-0.526814,0.726614，-0.063783，-0.532670,0.936662,0.175649，-0.527249,0.936101，-0.038258，-0.531152,0.955526,0.188491,0.327129,0.741670,0.189542,0.333219,0.740995， - 0.023997,0.346373,0.957516，-0.026579,0.335892,0.950747,0.177176,0.084729,0.735527,0.176414,0.119766,0.737054，-0.036978,0.135064,0.955274，-0.036216,0.100027,0.124535,0.198942,0.348308,0.125736，-0.026534,0.372816， 0.11733,0.181928,0.135162,0.115363，-0.034357,0.150613,0.091805,0.199118,0.349619,0.093005，-0.026358,0.374127,0.084603,0.182104,0.136474,0.082633，-0.034181,0.151924,0.721330,0.207354，-0.745853,0.720410，-0.006582 ，-0.747520,0.726598，-0.033529，-0.533201,0.727519,0.180408，-0.531534,0.934337，-0。 158101，-0.750111，0.940526，-0.185047，-0.535791，0.941446，0.028890，-0.534124，0.721374，-0.645783，-0.751908，0.723957，-0.647461，-0.537985，0.935302，-0.646683，-0.754498，0.937885，-0.648361， - 0.540576,0.934592,0.209805，-0.741689,0.720650,0.208757，-0.741253,0.721104,0.204856，-0.527345,0.933546,0.205904，-0.527780,0.935631，-0.004102，-0.745592,0.721689，-0.005150，-0.745156,0.722144，-0.009051 ，-0.531248,0.936086，-0.008003，-0.531683,0.103302,0.203762，-0.746541,0.105341,0.210287，-0.519837,0.103302，-0.010183，-0.746541,0.102406，-0.012058，-0.529706,0.720650,0.208757，-0.741253,0.720650 ，0.208757，-0.741253,0.721119,0.206804，-0.525190,0.721104,0.204856，-0.527345,0.934592,0.209805，-0.741689,0.934577,0.207857，-0.743844,0.933546,0.205904，-0.527780,0.933546,0.205904，-0.527780,0.721374， -0.645783，-0.751908,0.723957，-0.647461，-0.537985,0.935302，-0.646683，-0.754498,0.937885，-0.648361，-0.540576,0.934592,0.209805，-0.741689,0.720 650，0.208757，-0.741253，0.721104，0.204856，-0.527345，0.935046，0.205904，-0.527780，0.935631，-0.004102，-0.745592，0.721689，-0.005150，-0.745156，0.722144，-0.009051，-0.531248，0.936086，-0.008003， -0.531683,0.103302,0.203762，-0.746541,0.105341,0.210287，-0.519837,0.103302，-0.010183，-0.746541,0.102406，-0.012058，-0.529706，-0.986491,0.847652,0.031098，-0.987709,0.843956，-0.164961，-0.986318 ，0.637021，-0.166461，-0.984346,0.647845,0.011650，-0.777551,0.843796,0.052705，-0.773801,0.845320，-0.161202，-0.772410,0.631385，-0.162702，-0.776160,0.629861,0.051205，-0.976949,0.848330，-0.778808 ，-0.975558,0.634395，-0.780308，-0.763042,0.849694，-0.775049，-0.761651,0.635759，-0.776549，-0.966568,0.824917，-0.172216，-0.719671,0.847137，-0.153942，-0.720530,0.633195，-0.153342， - 0.982316,0.641381，-0.182278，-0.986363,0.841550,0.031924，-0.721447,0.847745,0.059995，-0.722306,0.633803,0.060595，-0.997095,0.634657,0.025697，-0.105714,0.844402，-0.13 6023，-0.104162,0.632010，-0.133601，-0.107833,0.846389,0.077902，-0.109821,0.634471,0.082080，-0.114350,0.016580，-0.128420，-0.112118,0.230505，-0.130385,0.101805,0.228293，-0.128246,0.099573,0.014368 ，-0.126281，-0.110643,0.018567,0.085505，-0.114237,0.232492,0.053540,0.099686,0.230280,0.085680,0.097454,0.016355,0.087644，-0.105714,0.844402，-0.136023,0.108209,0.842190，-0.133884，-0.107833,0.846389， 0.077902，0.106090，0.844177，0.080041，-0.110643，-0.010183，0.081361，-0.110643，-0.010183，-0.132584，0.103302，-0.010183，-0.132584，0.103302，-0.010183，0.081361，-0.117934，0.232671，0.082464，-0.114864， 0.227828，-0.140563,0.104356,0.225305，-0.131726,0.097681,0.232683,0.091157，-0.110643，-0.010183，-0.746541,0.103302，-0.010183，-0.746541，-0.110643,0.203762，-0.746541,0.103302,0.203762，-0.746541， -0.000131,0.090791，-0.004629，-0.090885，-0.000973,0.001877，-0.090871，-0.000419,0.002596,0.090902，-0.000181，-0.001123,0.000109,0.001963， -0.090888，0.090878，0.000484，-0.002330，0.005764，-0.090706，0.001896，-0.000427，0.090908，-0.000222，0.003094，0.007769，0.090524，0.000102，-0.090793，0.004591，0.090901，-0.000106，-0.001197，0.003563，0.004619， 0.090722,0.003670,0.009835,0.090301，-0.002305，-0.006484，-0.090648,0.000142，-0.090805,0.004353,0.000936,0.090676，-0.006436，-0.090835,0.000487,0.003639,0.000196,0.090620，-0.007240，-0.003665，-0.006439 ，-0.090607，-0.000359，-0.090852,0.003215，-0.090890,0.000108,0.001869，-0.090869,0.000370,0.002670，-0.000391，-0.090905，-0.000708,0.000031,0.090907，-0.000542，-0.000442,0.090893,0.001658， - 0.090907，0.000606，0.000228，0.000590，-0.090899，-0.001218，0.000660，-0.002871，0.090861，0.000484，0.000830，-0.090904，-0.000454，0.067440，-0.060960，-0.090907，-0.000198，0.000644，-0.000454，0.067439， - 0.060961,0.090908，-0.000465，-0.000202,0.090908，-0.000453，-0.000201,0.090907,0.000198，-0.000644,0.001095，-0.001358,0.090892，-0.001096,0.001 132，-0.090895,0.000564,0.090906，-0.000478，-0.090893，-0.000589，-0.001594，-0.005295，-0.090730,0.002128，-0.013410，-0.004661,0.089794，-0.090902，-0.000832,0.000807,0.090893,0.000580,0.001597 ，0.001593,0.000648，-0.090893,0.090893,0.000580,0.001597，-0.000905，-0.090904，-0.000145，-0.000591,0.090905,0.000637，-0.004675,0.090701，-0.003982,0.002779，-0.000640，-0.090864，-0.001368， - 0.090888，-0.001371，-0.090349,0.006450，-0.007735,0.008350,0.001805，-0.090507，-0.010526，-0.000917,0.090293,0.090894，-0.000068,0.001646，-0.002918,0.001039,0.090856，-0.000060，-0.090907,0.000648， 0.000319，0.090907，-0.000548，-0.090908，-0.000286，0.000340，0.000900，-0.000844，-0.090901，0.090900，-0.000940，0.000909，-0.000961，-0.090900，0.000848，-0.000913，0.000832，0.090901，0.000948，0.090900， - 0.000835，-0.000900,0.000844,0.090901,0.090900，-0.000940,0.000909，-0.090900,0.000940，-0.000909，-0.090881，-0.002185，-0.000614,0.000000，-0.090909，-0.000000,0.09 0895,0.000837,0.001375，-0.001839，-0.002088,0.090867,0.000624,0.090873，-0.002477，-0.000000,0.000000，-0.090909,0.000598,0.090844，-0.003392,0.090909，-0.000213，-0.000074，-0.090905，-0.000854， -0.000298

Answer 1

Blender的元素（索引）从1开始，但是OpenGL从0开始计数。从每个元素减去1。

Answer 2

经过进一步研究后，您可以指定是否启用了已禁用的剔除。您还可以指定是顺时针方向还是逆时针方向进行剔除。