Updating changes, long overdue

assets/cube.obj

@@ -0,0 +1,48 @@
+
+# cube.obj
+#
+
+mtllib cube.mtl
+o cube
+
+v -1.000000 -1.000000 1.000000
+v 1.000000 -1.000000 1.000000
+v -1.000000 1.000000 1.000000
+v 1.000000 1.000000 1.000000
+v -1.000000 1.000000 -1.000000
+v 1.000000 1.000000 -1.000000
+v -1.000000 -1.000000 -1.000000
+v 1.000000 -1.000000 -1.000000
+
+vt 1.000000 0.000000
+vt 0.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+
+vn 0.000000 0.000000 1.000000
+vn 0.000000 1.000000 0.000000
+vn 0.000000 0.000000 -1.000000
+vn 0.000000 -1.000000 0.000000
+vn 1.000000 0.000000 0.000000
+vn -1.000000 0.000000 0.000000
+
+g cube
+usemtl cube
+s 1
+f 1/1/1 2/2/1 3/3/1
+f 3/3/1 2/2/1 4/4/1
+s 2
+f 3/1/2 4/2/2 5/3/2
+f 5/3/2 4/2/2 6/4/2
+s 3
+f 5/4/3 6/3/3 7/2/3
+f 7/2/3 6/3/3 8/1/3
+s 4
+f 7/1/4 8/2/4 1/3/4
+f 1/3/4 8/2/4 2/4/4
+s 5
+f 2/1/5 8/2/5 4/3/5
+f 4/3/5 8/2/5 6/4/5
+s 6
+f 7/1/6 1/2/6 5/3/6
+f 5/3/6 1/2/6 3/4/6

assets/f22.obj

@@ -0,0 +1,707 @@
+# Blender v2.79 (sub 0) OBJ File: 'fighters_0.blend'
+# www.blender.org
+mtllib f-22.mtl
+o F-22
+v 0.885739 0.001910 -0.380334
+v 0.322026 0.035470 -0.433102
+v -0.907053 0.017201 -0.352922
+v 1.047128 0.048117 -0.183264
+v 0.362277 0.114239 -0.142520
+v 1.125941 0.131116 -0.101088
+v 1.199510 0.242528 -0.056765
+v 1.529867 0.098373 -0.067674
+v 1.566378 0.011323 -0.146393
+v 1.762624 0.050007 -0.049581
+v 1.789931 -0.007335 -0.103633
+v -1.226703 0.083896 -0.231401
+v -1.226703 0.083896 -0.043034
+v -1.304689 0.083896 -0.142520
+v -0.560223 0.071221 -0.299735
+v 0.779234 -0.185506 -0.231401
+v -0.408812 -0.168000 -0.231401
+v -1.226703 -0.023036 -0.043034
+v -1.226703 -0.023036 -0.231464
+v -1.304556 -0.023036 -0.142520
+v -0.442164 -0.009523 -0.406435
+v -0.875984 0.035470 -1.161559
+v -0.727243 0.035470 -1.316844
+v -0.494141 0.035470 -1.316844
+v -1.376274 0.035470 -0.874979
+v -1.417826 0.035470 -0.043034
+v 1.016889 0.247035 -0.041089
+v -0.910201 0.071705 -0.260759
+v -0.910201 0.114239 -0.142520
+v -1.347072 0.053931 -0.291132
+v -0.949411 0.058716 -0.324121
+v -1.086356 0.618995 -0.582384
+v -0.945513 0.618995 -0.582384
+v -0.820765 0.618995 -0.582384
+v -1.074394 0.035470 -0.526090
+v -1.347072 0.017010 -0.291132
+v -1.420792 0.035470 -0.231401
+v -1.704863 0.035470 -0.554642
+v -1.607890 0.035470 -0.874979
+v 1.142508 0.156204 -0.091107
+v 0.821684 0.218761 -0.028011
+v 1.453805 0.131564 -0.065163
+v 0.835981 0.180467 -0.042103
+v 0.885739 0.001910 0.380334
+v 0.322026 0.035470 0.433102
+v -0.907053 0.017201 0.352922
+v 1.047128 0.048117 0.183264
+v 0.362277 0.114239 0.142520
+v 1.125941 0.131116 0.101088
+v 1.199510 0.242528 0.056765
+v 1.529867 0.098373 0.067674
+v 1.566378 0.011323 0.146393
+v 1.762624 0.050007 0.049581
+v 1.789931 -0.007335 0.103633
+v -1.226703 0.083896 0.231401
+v -1.226703 0.083896 0.043034
+v -1.304689 0.083896 0.142520
+v -0.560223 0.071221 0.299735
+v 0.779234 -0.185506 0.231401
+v -0.408812 -0.168000 0.231401
+v -1.226703 -0.023036 0.043034
+v -1.226703 -0.023036 0.231464
+v -1.304556 -0.023036 0.142520
+v -0.442164 -0.009523 0.406435
+v -0.875984 0.035470 1.161559
+v -0.727243 0.035470 1.316844
+v -0.494141 0.035470 1.316844
+v -1.376274 0.035470 0.874979
+v -1.417826 0.035470 0.043034
+v 1.016889 0.247035 0.041089
+v -0.910201 0.071705 0.260759
+v -0.910201 0.114239 0.142520
+v -1.347072 0.053931 0.291132
+v -0.949411 0.058716 0.324121
+v -1.086356 0.618995 0.582384
+v -0.945513 0.618995 0.582384
+v -0.820765 0.618995 0.582384
+v -1.074394 0.035470 0.526090
+v -1.347072 0.017010 0.291132
+v -1.420792 0.035470 0.231401
+v -1.704863 0.035470 0.554642
+v -1.607890 0.035470 0.874979
+v 1.142508 0.156204 0.091107
+v 0.821684 0.218761 0.028011
+v 1.453805 0.131564 0.065163
+v 0.835981 0.180467 0.042103
+v -0.910201 0.094558 0.000000
+v 0.403590 0.158204 0.000000
+v 1.236021 0.268974 0.000000
+v 1.568094 0.113851 0.000000
+v 1.791648 0.062518 0.000000
+v 2.014232 -0.030625 0.000000
+v 1.566378 -0.120168 0.000000
+v 1.789931 -0.082458 0.000000
+v 0.919486 -0.169810 0.000000
+v -0.408812 -0.167592 0.000000
+v -1.226703 0.078200 0.000000
+v -1.226703 -0.023036 0.000000
+v -1.442453 0.035470 0.000000
+v 1.016889 0.266178 0.000000
+v 1.487051 0.151710 0.000000
+v 0.817113 0.231006 0.000000
+vt 0.302940 0.699066
+vt 0.442081 0.762279
+vt 0.260042 0.751449
+vt 0.780315 0.800162
+vt 0.431099 0.800162
+vt 0.239093 0.773292
+vt 0.316239 0.628907
+vt 0.320312 0.648438
+vt 0.269531 0.648438
+vt 0.268080 0.668033
+vt 0.209833 0.668033
+vt 0.152344 0.648438
+vt 0.218750 0.648438
+vt 0.234686 0.622186
+vt 0.122021 0.761249
+vt 0.069858 0.786983
+vt 0.062599 0.772615
+vt 0.121565 0.800162
+vt 0.131726 0.782173
+vt 0.002978 0.800162
+vt 0.062143 0.800162
+vt 0.687288 0.720490
+vt 0.780315 0.762279
+vt 0.117476 0.888175
+vt 0.176898 0.858183
+vt 0.176898 0.893135
+vt 0.057855 0.881984
+vt 0.117476 0.868207
+vt 0.314919 0.902915
+vt 0.348847 0.844988
+vt 0.350939 0.448650
+vt 0.338144 0.510748
+vt 0.289431 0.452822
+vt 0.329981 0.132766
+vt 0.645773 0.071258
+vt 0.645773 0.132766
+vt 0.452780 0.685040
+vt 0.669723 0.450134
+vt 0.731683 0.450134
+vt 0.771220 0.491410
+vt 0.823959 0.660323
+vt 0.507656 0.899553
+vt 0.357817 0.890633
+vt 0.386127 0.840816
+vt 0.701919 0.845469
+vt 0.896439 0.722777
+vt 0.916034 0.738294
+vt 0.864444 0.738294
+vt 0.445843 0.497454
+vt 0.469468 0.469031
+vt 0.469468 0.497454
+vt 0.495912 0.497454
+vt 0.654638 0.182832
+vt 0.668454 0.424826
+vt 0.451511 0.189920
+vt 0.654638 0.179292
+vt 0.778209 0.165068
+vt 0.822690 0.211097
+vt 0.864444 0.469031
+vt 0.864444 0.497454
+vt 0.916034 0.484582
+vt 0.863174 0.082019
+vt 0.863174 0.071258
+vt 0.913977 0.082019
+vt 0.864444 0.800162
+vt 0.864444 0.789083
+vt 0.809306 0.497454
+vt 0.809306 0.469031
+vt 0.860108 0.484582
+vt 0.915246 0.789083
+vt 0.921792 0.800162
+vt 0.822690 0.214637
+vt 0.769951 0.383550
+vt 0.730414 0.424826
+vt 0.834355 0.894697
+vt 0.919320 0.884002
+vt 0.141653 0.276624
+vt 0.107458 0.425551
+vt 0.038204 0.279948
+vt 0.178054 0.425551
+vt 0.140617 0.425551
+vt 0.883868 0.109141
+vt 0.863174 0.132783
+vt 0.780315 0.730850
+vt 0.904201 0.567586
+vt 0.790737 0.714008
+vt 0.991542 0.652734
+vt 0.385137 0.280077
+vt 0.361364 0.425551
+vt 0.394523 0.425551
+vt 0.431960 0.425551
+vt 0.501261 0.275352
+vt 0.895170 0.148643
+vt 0.914765 0.132766
+vt 0.902932 0.303834
+vt 0.990273 0.218686
+vt 0.964497 0.303834
+vt 0.965766 0.567586
+vt 0.885173 0.762279
+vt 0.151941 0.583698
+vt 0.239090 0.583579
+vt 0.234686 0.590248
+vt 0.316239 0.596969
+vt 0.431096 0.590779
+vt 0.321182 0.614322
+vt 0.319967 0.606876
+vt 0.431099 0.614322
+vt 0.143107 0.601016
+vt 0.131726 0.583028
+vt 0.321182 0.668033
+vt 0.121565 0.601016
+vt 0.131723 0.574876
+vt 0.292110 0.279948
+vt 0.247354 0.275352
+vt 0.710784 0.887594
+vt 0.920523 0.071258
+vt 0.495912 0.469031
+vt 0.445826 0.469031
+vt 0.292701 0.071258
+vt 0.390527 0.498466
+vt 0.143107 0.668033
+vt 0.302940 0.699066
+vt 0.260042 0.751449
+vt 0.442081 0.762279
+vt 0.239093 0.773292
+vt 0.316239 0.628907
+vt 0.269531 0.648438
+vt 0.320312 0.648438
+vt 0.218750 0.648438
+vt 0.152344 0.648438
+vt 0.234686 0.622186
+vt 0.122021 0.761249
+vt 0.062599 0.772615
+vt 0.069858 0.786983
+vt 0.131726 0.782173
+vt 0.687288 0.720490
+vt 0.780315 0.762279
+vt 0.117476 0.888175
+vt 0.176898 0.893135
+vt 0.314919 0.902915
+vt 0.350939 0.448650
+vt 0.338144 0.510748
+vt 0.329981 0.132766
+vt 0.645773 0.132766
+vt 0.452780 0.685040
+vt 0.731683 0.450134
+vt 0.669723 0.450134
+vt 0.823959 0.660323
+vt 0.771220 0.491410
+vt 0.507656 0.899553
+vt 0.386127 0.840816
+vt 0.357817 0.890633
+vt 0.701919 0.845469
+vt 0.896439 0.722777
+vt 0.864444 0.738294
+vt 0.916034 0.738294
+vt 0.445843 0.497454
+vt 0.469468 0.497454
+vt 0.469468 0.469031
+vt 0.495912 0.497454
+vt 0.654638 0.182832
+vt 0.451511 0.189920
+vt 0.668454 0.424826
+vt 0.654638 0.179292
+vt 0.822690 0.211097
+vt 0.778209 0.165068
+vt 0.864444 0.469031
+vt 0.916034 0.484582
+vt 0.864444 0.497454
+vt 0.863174 0.082019
+vt 0.913977 0.082019
+vt 0.864444 0.789083
+vt 0.809306 0.497454
+vt 0.860108 0.484582
+vt 0.809306 0.469031
+vt 0.915246 0.789083
+vt 0.822690 0.214637
+vt 0.769951 0.383550
+vt 0.730414 0.424826
+vt 0.834355 0.894697
+vt 0.919320 0.884002
+vt 0.141653 0.276624
+vt 0.038204 0.279948
+vt 0.107458 0.425551
+vt 0.140617 0.425551
+vt 0.178054 0.425551
+vt 0.883868 0.109141
+vt 0.863174 0.132783
+vt 0.780315 0.730850
+vt 0.904201 0.567586
+vt 0.790737 0.714008
+vt 0.991542 0.652734
+vt 0.385137 0.280077
+vt 0.394523 0.425551
+vt 0.361364 0.425551
+vt 0.501261 0.275352
+vt 0.431960 0.425551
+vt 0.895170 0.148643
+vt 0.914765 0.132766
+vt 0.902932 0.303834
+vt 0.964497 0.303834
+vt 0.990273 0.218686
+vt 0.965766 0.567586
+vt 0.885173 0.762279
+vt 0.151941 0.583698
+vt 0.234686 0.590248
+vt 0.239090 0.583579
+vt 0.316239 0.596969
+vt 0.319967 0.606876
+vt 0.131726 0.583028
+vt 0.131723 0.574876
+vt 0.292110 0.279948
+vt 0.247354 0.275352
+vt 0.710784 0.887594
+vt 0.495912 0.469031
+vt 0.445826 0.469031
+vt 0.390527 0.498466
+vn 0.0752 0.9554 -0.2856
+vn -0.0464 0.9582 -0.2821
+vn -0.0672 0.7335 -0.6764
+vn -0.1079 0.3076 -0.9454
+vn -0.1576 0.8951 -0.4170
+vn 0.3158 0.7660 -0.5600
+vn 0.1032 0.3081 -0.9457
+vn 0.0996 0.6507 -0.7527
+vn 0.1879 0.7196 -0.6685
+vn 0.2166 0.9180 -0.3323
+vn 0.3493 0.7254 -0.5931
+vn 0.3509 0.8385 -0.4170
+vn 0.0000 0.9645 -0.2639
+vn 0.0656 -0.7424 -0.6668
+vn 0.1839 -0.7958 -0.5769
+vn 0.0506 -0.6600 -0.7496
+vn 0.6508 -0.6744 -0.3487
+vn -0.0147 -0.9999 0.0018
+vn -0.0004 0.9652 -0.2616
+vn 0.0000 0.9994 -0.0351
+vn -0.0610 0.9980 -0.0190
+vn 0.0346 -0.6338 -0.7728
+vn -0.0101 -0.6854 -0.7281
+vn -0.2421 0.9703 0.0011
+vn -0.7517 -0.0009 -0.6595
+vn -0.7870 -0.0010 0.6169
+vn 0.0569 -0.9970 -0.0525
+vn -0.0625 -0.9970 -0.0448
+vn 0.0001 -0.0006 1.0000
+vn -0.0313 0.9991 -0.0300
+vn -0.1740 -0.9847 0.0000
+vn -0.2927 -0.9562 0.0000
+vn -0.0512 0.9901 0.1310
+vn 0.0000 0.0000 -1.0000
+vn -0.1931 0.9749 -0.1105
+vn -0.0670 -0.9975 -0.0209
+vn -0.0388 -0.9986 -0.0372
+vn -0.1372 -0.7744 -0.6176
+vn 0.0702 -0.4308 -0.8997
+vn 0.0000 -0.4186 -0.9082
+vn -0.1725 -0.9734 -0.1510
+vn -0.1596 -0.9872 0.0017
+vn -0.1795 -0.9737 0.1405
+vn 0.0048 0.9410 -0.3385
+vn 0.0000 0.9906 0.1368
+vn 0.0387 0.9987 -0.0335
+vn -0.0258 0.9948 -0.0985
+vn -0.0061 0.8987 -0.4386
+vn -0.0204 0.9946 -0.1018
+vn -0.1436 0.9816 0.1262
+vn 0.0000 0.5067 0.8621
+vn -0.0803 0.4857 0.8704
+vn -0.2881 -0.9557 -0.0602
+vn 0.0387 -0.9987 -0.0335
+vn -0.0421 -0.9990 -0.0128
+vn -0.0126 -0.9956 -0.0929
+vn -0.0646 -0.8840 -0.4629
+vn -0.0000 0.9995 -0.0316
+vn 0.0000 -0.9995 -0.0316
+vn -0.0766 0.9953 0.0600
+vn -0.0765 0.9948 -0.0671
+vn -0.0519 0.9893 0.1366
+vn -0.1094 0.4290 -0.8967
+vn 0.3481 0.8307 -0.4344
+vn -0.0681 0.4073 -0.9107
+vn -0.1215 0.3445 -0.9309
+vn -0.0116 0.9064 -0.4223
+vn -0.0132 0.9096 -0.4153
+vn 0.3865 0.8274 -0.4075
+vn -0.1436 -0.9816 0.1262
+vn 0.0970 0.4924 0.8649
+vn -0.0421 0.9990 -0.0128
+vn -0.0694 -0.4316 -0.8994
+vn -0.1182 -0.7472 -0.6540
+vn -0.2436 0.9615 0.1273
+vn -0.2588 -0.9545 -0.1481
+vn 0.0000 -0.9988 -0.0494
+vn -0.7875 0.0000 0.6163
+vn -0.7525 0.0004 -0.6586
+vn 0.0200 -0.7392 -0.6731
+vn 0.0355 0.9988 -0.0328
+vn -0.0017 -0.9976 0.0687
+vn 0.6468 -0.6647 -0.3739
+vn -0.0053 -0.7439 -0.6682
+vn 0.1353 -0.8022 -0.5815
+vn -0.0364 0.9403 -0.3383
+vn 0.2094 0.9120 -0.3527
+vn 0.1990 0.7019 -0.6839
+vn 0.1150 0.6924 -0.7123
+vn 0.3792 0.8117 -0.4444
+vn 0.0728 0.9469 -0.3132
+vn 0.0825 0.9589 -0.2714
+vn 0.0752 0.9554 0.2856
+vn -0.0464 0.9582 0.2821
+vn -0.0672 0.7335 0.6764
+vn -0.1079 0.3076 0.9454
+vn -0.1576 0.8951 0.4170
+vn 0.3158 0.7660 0.5600
+vn 0.1032 0.3081 0.9457
+vn 0.0996 0.6507 0.7527
+vn 0.1879 0.7196 0.6685
+vn 0.2166 0.9180 0.3323
+vn 0.3493 0.7254 0.5931
+vn 0.3509 0.8385 0.4170
+vn 0.0000 0.9645 0.2639
+vn 0.0656 -0.7424 0.6668
+vn 0.1839 -0.7958 0.5769
+vn 0.0506 -0.6600 0.7496
+vn 0.6508 -0.6744 0.3487
+vn -0.0147 -0.9999 -0.0018
+vn -0.0004 0.9652 0.2616
+vn 0.0000 0.9994 0.0351
+vn -0.0610 0.9980 0.0190
+vn 0.0346 -0.6338 0.7728
+vn -0.0101 -0.6854 0.7281
+vn -0.2421 0.9703 -0.0011
+vn -0.7517 -0.0009 0.6595
+vn -0.7870 -0.0010 -0.6169
+vn 0.0569 -0.9970 0.0525
+vn -0.0625 -0.9970 0.0448
+vn 0.0001 -0.0006 -1.0000
+vn -0.0313 0.9991 0.0300
+vn -0.0512 0.9901 -0.1310
+vn 0.0000 0.0000 1.0000
+vn -0.1931 0.9749 0.1105
+vn -0.0670 -0.9975 0.0209
+vn -0.0388 -0.9986 0.0372
+vn -0.1372 -0.7744 0.6176
+vn 0.0702 -0.4308 0.8997
+vn 0.0000 -0.4186 0.9082
+vn -0.1725 -0.9734 0.1510
+vn -0.1596 -0.9872 -0.0017
+vn -0.1795 -0.9737 -0.1405
+vn 0.0048 0.9410 0.3385
+vn 0.0000 0.9906 -0.1368
+vn 0.0387 0.9987 0.0335
+vn -0.0258 0.9948 0.0985
+vn -0.0061 0.8987 0.4386
+vn -0.0204 0.9946 0.1018
+vn -0.1436 0.9816 -0.1262
+vn 0.0000 0.5067 -0.8621
+vn -0.0803 0.4857 -0.8704
+vn -0.2881 -0.9557 0.0602
+vn 0.0387 -0.9987 0.0335
+vn -0.0421 -0.9990 0.0128
+vn -0.0126 -0.9956 0.0929
+vn -0.0646 -0.8840 0.4629
+vn -0.0000 0.9995 0.0316
+vn 0.0000 -0.9995 0.0316
+vn -0.0766 0.9953 -0.0600
+vn -0.0765 0.9948 0.0671
+vn -0.0519 0.9893 -0.1366
+vn -0.1094 0.4290 0.8967
+vn 0.3481 0.8307 0.4344
+vn -0.0681 0.4073 0.9107
+vn -0.1215 0.3445 0.9309
+vn -0.0116 0.9064 0.4223
+vn -0.0132 0.9096 0.4153
+vn 0.3865 0.8274 0.4075
+vn -0.1436 -0.9816 -0.1262
+vn 0.0970 0.4924 -0.8649
+vn -0.0421 0.9990 0.0128
+vn -0.0694 -0.4316 0.8994
+vn -0.1182 -0.7472 0.6540
+vn -0.2436 0.9615 -0.1273
+vn -0.2588 -0.9545 0.1481
+vn 0.0000 -0.9988 0.0494
+vn -0.7875 0.0000 -0.6163
+vn -0.7525 0.0004 0.6586
+vn 0.0200 -0.7392 0.6731
+vn 0.0355 0.9988 0.0328
+vn -0.0017 -0.9976 -0.0687
+vn 0.6468 -0.6647 0.3739
+vn -0.0053 -0.7439 0.6682
+vn 0.1353 -0.8022 0.5815
+vn -0.0364 0.9403 0.3383
+vn 0.2094 0.9120 0.3527
+vn 0.1990 0.7019 0.6839
+vn 0.1150 0.6924 0.7123
+vn 0.3792 0.8117 0.4444
+vn 0.0728 0.9469 0.3132
+vn 0.0825 0.9589 0.2714
+usemtl Material.001
+s off
+f 1/1/1 5/2/1 4/3/1
+f 5/2/2 87/4/2 88/5/2
+f 4/3/3 88/5/3 6/6/3
+f 43/7/4 41/8/4 27/9/4
+f 41/8/5 100/10/5 27/9/5
+f 89/11/6 42/12/6 7/13/6
+f 7/13/7 42/12/7 40/14/7
+f 6/6/8 9/15/8 4/3/8
+f 9/15/9 10/16/9 11/17/9
+f 90/18/10 10/16/10 8/19/10
+f 11/17/11 10/16/11 92/20/11
+f 10/16/12 91/21/12 92/20/12
+f 15/22/13 29/23/13 5/2/13
+f 11/24/14 93/25/14 9/26/14
+f 11/24/15 92/27/15 94/28/15
+f 4/29/16 93/25/16 95/30/16
+f 16/31/17 4/32/17 95/33/17
+f 16/34/18 96/35/18 17/36/18
+f 5/2/19 2/37/19 15/22/19
+f 15/22/20 24/38/20 23/39/20
+f 15/22/21 22/40/21 35/41/21
+f 2/42/22 1/43/22 16/44/22
+f 17/45/23 2/42/23 16/44/23
+f 30/46/24 37/47/24 12/48/24
+f 12/49/25 20/50/25 14/51/25
+f 20/50/26 13/52/26 14/51/26
+f 21/53/27 24/54/27 2/55/27
+f 21/56/28 3/57/28 35/58/28
+f 19/59/29 12/60/29 37/61/29
+f 15/22/30 23/39/30 22/40/30
+f 18/62/31 96/35/31 98/63/31
+f 98/63/32 26/64/32 18/62/32
+f 97/65/33 87/4/33 13/66/33
+f 13/67/34 18/68/34 26/69/34
+f 97/65/35 26/70/35 99/71/35
+f 35/72/36 22/73/36 21/53/36
+f 22/73/37 23/74/37 21/53/37
+f 3/75/38 17/45/38 19/76/38
+f 31/77/39 34/78/39 15/79/39
+f 31/77/40 32/80/40 33/81/40
+f 20/82/41 19/83/41 17/36/41
+f 20/82/42 17/36/42 96/35/42
+f 18/62/43 20/82/43 96/35/43
+f 29/23/44 28/84/44 12/48/44
+f 87/4/45 5/2/45 29/23/45
+f 25/85/46 30/46/46 35/41/46
+f 31/86/47 15/22/47 35/41/47
+f 30/46/48 12/48/48 28/84/48
+f 30/46/49 31/86/49 35/41/49
+f 30/46/50 38/87/50 37/47/50
+f 28/88/51 34/89/51 33/90/51
+f 28/88/52 32/91/52 30/92/52
+f 36/93/53 19/83/53 37/94/53
+f 36/93/54 25/95/54 35/58/54
+f 36/93/55 38/96/55 39/97/55
+f 36/93/56 35/58/56 3/57/56
+f 3/57/57 19/83/57 36/93/57
+f 25/85/58 39/98/58 30/46/58
+f 36/93/59 39/97/59 25/95/59
+f 29/23/60 14/99/60 13/66/60
+f 14/99/61 29/23/61 12/48/61
+f 87/4/62 29/23/62 13/66/62
+f 42/100/7 6/101/7 40/102/7
+f 43/103/63 6/101/63 88/104/63
+f 102/105/5 41/106/5 88/107/5
+f 101/108/64 8/109/64 42/100/64
+f 27/9/65 7/13/65 40/14/65
+f 40/14/66 43/7/66 27/9/66
+f 41/8/5 102/110/5 100/10/5
+f 100/10/67 89/11/67 27/9/67
+f 89/11/68 7/13/68 27/9/68
+f 101/108/69 90/111/69 8/109/69
+f 43/103/63 40/102/63 6/101/63
+f 88/104/4 41/106/4 43/103/4
+f 42/100/7 8/112/7 6/101/7
+f 36/93/70 37/94/70 38/96/70
+f 28/88/51 33/90/51 32/91/51
+f 28/88/71 15/113/71 34/89/71
+f 30/46/72 39/98/72 38/87/72
+f 31/77/73 30/114/73 32/80/73
+f 31/77/40 33/81/40 34/78/40
+f 3/75/74 21/115/74 17/45/74
+f 97/65/75 13/66/75 26/70/75
+f 98/63/76 99/116/76 26/64/76
+f 21/53/77 23/74/77 24/54/77
+f 20/50/78 18/117/78 13/52/78
+f 12/49/79 19/118/79 20/50/79
+f 17/45/80 21/115/80 2/42/80
+f 15/22/81 2/37/81 24/38/81
+f 16/34/82 95/119/82 96/35/82
+f 16/31/83 1/120/83 4/32/83
+f 4/29/84 9/26/84 93/25/84
+f 11/24/85 94/28/85 93/25/85
+f 15/22/86 28/84/86 29/23/86
+f 90/18/87 91/21/87 10/16/87
+f 9/15/88 8/19/88 10/16/88
+f 6/6/89 8/19/89 9/15/89
+f 89/11/90 101/121/90 42/12/90
+f 4/3/91 5/2/91 88/5/91
+f 1/1/92 2/37/92 5/2/92
+f 44/122/93 47/123/93 48/124/93
+f 48/124/94 88/5/94 87/4/94
+f 47/123/95 49/125/95 88/5/95
+f 86/126/96 70/127/96 84/128/96
+f 84/128/97 70/127/97 100/10/97
+f 89/11/98 50/129/98 85/130/98
+f 50/129/99 83/131/99 85/130/99
+f 49/125/100 47/123/100 52/132/100
+f 52/132/101 54/133/101 53/134/101
+f 90/18/102 51/135/102 53/134/102
+f 54/133/103 92/20/103 53/134/103
+f 53/134/104 92/20/104 91/21/104
+f 58/136/105 48/124/105 72/137/105
+f 54/138/106 52/139/106 93/25/106
+f 54/138/107 94/28/107 92/27/107
+f 47/140/108 95/30/108 93/25/108
+f 59/141/109 95/33/109 47/142/109
+f 59/143/110 60/144/110 96/35/110
+f 48/124/111 58/136/111 45/145/111
+f 58/136/112 66/146/112 67/147/112
+f 58/136/113 78/148/113 65/149/113
+f 45/150/114 59/151/114 44/152/114
+f 60/153/115 59/151/115 45/150/115
+f 73/154/116 55/155/116 80/156/116
+f 55/157/117 57/158/117 63/159/117
+f 63/159/118 57/158/118 56/160/118
+f 64/161/119 45/162/119 67/163/119
+f 64/164/120 78/165/120 46/166/120
+f 62/167/121 80/168/121 55/169/121
+f 58/136/122 65/149/122 66/146/122
+f 61/170/31 98/63/31 96/35/31
+f 98/63/32 61/170/32 69/171/32
+f 97/65/123 56/172/123 87/4/123
+f 56/173/124 69/174/124 61/175/124
+f 97/65/125 99/71/125 69/176/125
+f 78/177/126 64/161/126 65/178/126
+f 65/178/127 64/161/127 66/179/127
+f 46/180/128 62/181/128 60/153/128
+f 74/182/129 58/183/129 77/184/129
+f 74/182/130 76/185/130 75/186/130
+f 63/187/131 60/144/131 62/188/131
+f 63/187/132 96/35/132 60/144/132
+f 61/170/133 96/35/133 63/187/133
+f 72/137/134 55/155/134 71/189/134
+f 87/4/135 72/137/135 48/124/135
+f 68/190/136 78/148/136 73/154/136
+f 74/191/137 78/148/137 58/136/137
+f 73/154/138 71/189/138 55/155/138
+f 73/154/139 78/148/139 74/191/139
+f 73/154/140 80/156/140 81/192/140
+f 71/193/141 76/194/141 77/195/141
+f 71/193/142 73/196/142 75/197/142
+f 79/198/143 80/199/143 62/188/143
+f 79/198/144 78/165/144 68/200/144
+f 79/198/145 82/201/145 81/202/145
+f 79/198/146 46/166/146 78/165/146
+f 46/166/147 79/198/147 62/188/147
+f 68/190/148 73/154/148 82/203/148
+f 79/198/149 68/200/149 82/201/149
+f 72/137/150 56/172/150 57/204/150
+f 57/204/151 55/155/151 72/137/151
+f 87/4/152 56/172/152 72/137/152
+f 85/205/99 83/206/99 49/207/99
+f 86/208/153 88/104/153 49/207/153
+f 102/105/97 88/107/97 84/209/97
+f 101/108/154 85/205/154 51/210/154
+f 70/127/155 83/131/155 50/129/155
+f 83/131/156 70/127/156 86/126/156
+f 84/128/97 100/10/97 102/110/97
+f 100/10/157 70/127/157 89/11/157
+f 89/11/158 70/127/158 50/129/158
+f 101/108/159 51/210/159 90/111/159
+f 86/208/153 49/207/153 83/206/153
+f 88/104/96 86/208/96 84/209/96
+f 85/205/99 49/207/99 51/211/99
+f 79/198/160 81/202/160 80/199/160
+f 71/193/141 75/197/141 76/194/141
+f 71/193/161 77/195/161 58/212/161
+f 73/154/162 81/192/162 82/203/162
+f 74/182/163 75/186/163 73/213/163
+f 74/182/130 77/184/130 76/185/130
+f 46/180/164 60/153/164 64/214/164
+f 97/65/165 69/176/165 56/172/165
+f 98/63/166 69/171/166 99/116/166
+f 64/161/167 67/163/167 66/179/167
+f 63/159/168 56/160/168 61/215/168
+f 55/157/169 63/159/169 62/216/169
+f 60/153/170 45/150/170 64/214/170
+f 58/136/171 67/147/171 45/145/171
+f 59/143/172 96/35/172 95/119/172
+f 59/141/173 47/142/173 44/217/173
+f 47/140/174 93/25/174 52/139/174
+f 54/138/175 93/25/175 94/28/175
+f 58/136/176 72/137/176 71/189/176
+f 90/18/177 53/134/177 91/21/177
+f 52/132/178 53/134/178 51/135/178
+f 49/125/179 52/132/179 51/135/179
+f 89/11/180 85/130/180 101/121/180
+f 47/123/181 88/5/181 48/124/181
+f 44/122/182 48/124/182 45/145/182

src/array.c

@@ -0,0 +1,40 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "array.h"
+
+#define ARRAY_RAW_DATA(array) ((int*)(array) - 2)
+#define ARRAY_CAPACITY(array) (ARRAY_RAW_DATA(array)[0])
+#define ARRAY_OCCUPIED(array) (ARRAY_RAW_DATA(array)[1])
+
+void* array_hold(void* array, int count, int item_size) {
+    if (array == NULL) {
+        int raw_size = (sizeof(int) * 2) + (item_size * count);
+        int* base = (int*)malloc(raw_size);
+        base[0] = count;  // capacity
+        base[1] = count;  // occupied
+        return base + 2;
+    } else if (ARRAY_OCCUPIED(array) + count <= ARRAY_CAPACITY(array)) {
+        ARRAY_OCCUPIED(array) += count;
+        return array;
+    } else {
+        int needed_size = ARRAY_OCCUPIED(array) + count;
+        int double_curr = ARRAY_CAPACITY(array) * 2;
+        int capacity = needed_size > double_curr ? needed_size : double_curr;
+        int occupied = needed_size;
+        int raw_size = sizeof(int) * 2 + item_size * capacity;
+        int* base = (int*)realloc(ARRAY_RAW_DATA(array), raw_size);
+        base[0] = capacity;
+        base[1] = occupied;
+        return base + 2;
+    }
+}
+
+int array_length(void* array) {
+    return (array != NULL) ? ARRAY_OCCUPIED(array) : 0;
+}
+
+void array_free(void* array) {
+    if (array != NULL) {
+        free(ARRAY_RAW_DATA(array));
+    }
+}

src/array.h

@@ -0,0 +1,14 @@
+#ifndef ARRAY_H
+#define ARRAY_H
+
+#define array_push(array, value)                                              \
+    do {                                                                      \
+        (array) = array_hold((array), 1, sizeof(*(array)));                   \
+        (array)[array_length(array) - 1] = (value);                           \
+    } while (0);
+
+void* array_hold(void* array, int count, int item_size);
+int array_length(void* array);
+void array_free(void* array);
+
+#endif

src/display.c

@@ -86,6 +86,12 @@ void draw_pixel(int x, int y, uint32_t color){
     }
 }
 
+void draw_triangle(int x0, int y0, int x1, int y1, int x2, int y2, uint32_t color) {
+    draw_line(x0, y0, x1, y1, color);
+    draw_line(x1, y1, x2, y2, color);
+    draw_line(x2, y2, x0, y0, color);
+};
+
 void draw_grid(void){
     for (int y = 0; y < window_height; y += 10){
 	    for (int x = 0; x < window_width; x += 10){
@@ -94,28 +100,27 @@ void draw_grid(void){
     }
 }
 
-void draw_line(int x0, int y0, int x1, int y1) {
+void draw_line(int x0, int y0, int x1, int y1, uint32_t color) {
     int delta_x = (x1 - x0);
     int delta_y = (y1 - y0);
 
-    int side_length = abs(delta_x) >= abs(delta_y) ? abs(delta_x) : abs(delta_y);
+    int longest_side_length = abs(delta_x) >= abs(delta_y) ? abs(delta_x) : abs(delta_y);
 
     // Find how much we should increment in both x and y each step
-    float x_inc = delta_x / (float)side_length;
-    float y_inc = delta_y / (float)side_length;
+    float x_inc = delta_x / (float)longest_side_length;
+    float y_inc = delta_y / (float)longest_side_length;
 
     float current_x = x0;
     float current_y = y0;
 
-    for (int i = 0; i <=side_length; i++) {
-        draw_pixel(round(current_x), round(current_y), 0xFFFFFF00);
+    for (int i = 0; i <= longest_side_length; i++) {
+        draw_pixel(round(current_x), round(current_y), color);
         current_x += x_inc;
         current_y += y_inc;
     }
 }
 
 void destroy_window(void){ 
-    free(color_buffer);
     SDL_DestroyRenderer(renderer);
     SDL_DestroyWindow(window);
     SDL_Quit();

src/display.h

@@ -17,10 +17,11 @@ extern int window_width;
 extern int window_height;
 
 bool initialize_window(void);
-void draw_line(int x0, int y0, int x1, int y1); 
+void draw_line(int x0, int y0, int x1, int y1, uint32_t color); 
 void draw_pixel(int x, int y, uint32_t color);
 void draw_rect(int x, int y, int width, int height, uint32_t color);
 void draw_grid(void);
+void draw_triangle(int x0, int y0, int x1, int y1, int x2, int y2, uint32_t color); 
 void render_color_buffer(void);
 void clear_color_buffer(uint32_t color);
 void destroy_window(void);

src/loader.c

@@ -0,0 +1,23 @@
+/*
+#include <stdio.h>
+#include <string.h>
+
+char load_obj_file(const char* file_name){
+    FILE* fp;
+
+    fp = fopen(file_name, "r");
+
+    if (!fp) {
+        perror("Error opening file");
+    }
+    
+    char* faces_loaded[100]; 
+    int faces_count = 0;
+
+    char line[1024];
+    while (fgets(line, sizeof(line), fp)) {
+        if (line[0] == 'f') {
+            faces_loaded[faces_count++] = strdup(line);
+        } 
+    }
+}*/

src/main.c

@@ -4,15 +4,16 @@
 #include <SDL2/SDL.h>
 #include "display.h"
 #include "vector.h"
+#include "mesh.h"
+#include "triangle.h"
+#include "array.h"
 
-#define N_POINTS (9 * 9 * 9)
+// Array of triangles that should be rendered frame by frame
+triangle_t* triangles_to_render = NULL;
 
-// Declare an array of vectors/points
-vec3_t cube_points[N_POINTS]; // 9x9x9 cube
-vec2_t projected_points[N_POINTS];
-
-vec3_t camera_position = { .x = 0, .y = 0, .z = -5};
-vec3_t cube_rotation = { .x = 0, .y = 0, .z = 0};
+// Global variables for execution status and game loop
+vec3_t camera_position = { 0, 0, 0 };
+//vec3_t cube_rotation = { .x = 0, .y = 0, .z = 0};
 
 
 float fov_factor = 640;
@@ -21,6 +22,7 @@ float fov_factor = 640;
 bool is_running = false;
 int previous_frame_time = 0;
 
+// Setup function to initialize variables and game objects
 void setup(void){
     // Allocates the memory in bytes required to hold for color_buffer, using sizeof to allocate the # of bytes required
     color_buffer = (uint32_t*) malloc(sizeof(uint32_t) * window_width * window_height);
@@ -32,20 +34,12 @@ void setup(void){
 	    SDL_TEXTUREACCESS_STREAMING,
 	    window_width,
 	    window_height
-	    );
+	);
 
-    int point_count = 0;
-
-    // Start loading my array of vectors
-    // From -1 to 1 (in this 9x9x9 cube)
-    for (float x = -1; x <= 1; x += 0.25) {
-    	for (float y = -1; y <= 1; y += 0.25){
-	        for (float z = -1; z <= 1; z += 0.25){
-		    vec3_t new_point = { .x = x, .y = y, .z = z };
-		    cube_points[point_count++] = new_point;
-	    }
-	}
-    }
+    // Loads the cube values in the mesh data structure
+    //load_cube_mesh_data();
+    //load_obj_file_data("./assets/cube.obj");
+    load_obj_file_data("./assets/cube.obj");
 }
 
 void process_input(void){
@@ -59,7 +53,7 @@ void process_input(void){
 	case SDL_KEYDOWN:
 	    if (event.key.keysym.sym == SDLK_ESCAPE)
 		is_running = false;
-	    break;
+	  break;
     }
 }
 
@@ -67,13 +61,15 @@ void process_input(void){
  * Function that receives a 3D vector and returns a 2D point
  */
 
-vec2_t project(vec3_t point){
+vec2_t project(vec3_t point) {
     vec2_t projected_point = {
 	.x = (fov_factor * point.x) / point.z, 
 	.y = (fov_factor * point.y) / point.z
     };
+
     return projected_point;
 }
+// Loads the cube values in the mesh data structure}
 
 void update(void){
     //while (!SDL_TICKS_PASSED(SDL_GetTicks(), previous_frame_time + FRAME_TARGET_TIME));
@@ -85,25 +81,87 @@ void update(void){
 
     previous_frame_time = SDL_GetTicks();
 
-    cube_rotation.x += 0.01;
-    cube_rotation.y += 0.01; 
-    cube_rotation.z += 0.01;
+    // Initialize the array of triangles to render
+    triangles_to_render = NULL;
 
-    for (int i = 0; i < N_POINTS; i++) {
-	    vec3_t point = cube_points[i];
+    mesh.rotation.x += 0.01;
+    mesh.rotation.y += 0.01; 
+    mesh.rotation.z += 0.02;
     
-	    vec3_t transformed_point = vec3_rotate_x(point, cube_rotation.x);
-        transformed_point = vec3_rotate_y(transformed_point, cube_rotation.y);
-        transformed_point = vec3_rotate_z(transformed_point, cube_rotation.z);
+    // Loop all triangle faces of our mesh
+    int num_faces = array_length(mesh.faces);
+    for (int i = 0; i < num_faces; i++) {
+        face_t mesh_face = mesh.faces[i];
         
-        // Translate point away from the camera
-	    transformed_point.z -= camera_position.z;
+        vec3_t face_vertices[3];
+        face_vertices[0] = mesh.vertices[mesh_face.a - 1];
+        face_vertices[1] = mesh.vertices[mesh_face.b - 1];
+        face_vertices[2] = mesh.vertices[mesh_face.c - 1];
     
-	    // Project the current point
-	    vec2_t projected_point = project(transformed_point);
+        //triangle_t projected_triangle;
 
-	    // Save the projected 2D vector in the array of projected points
-	    projected_points[i] = projected_point;
+        vec3_t transformed_vertices[3];
+
+        // Loop all three vertices of this current face and apply transformations
+        for (int j = 0; j < 3; j++) {
+            vec3_t transformed_vertex = face_vertices[j];
+            
+            transformed_vertex = vec3_rotate_x(transformed_vertex, mesh.rotation.x);
+            transformed_vertex = vec3_rotate_y(transformed_vertex, mesh.rotation.y);
+            transformed_vertex = vec3_rotate_z(transformed_vertex, mesh.rotation.z);
+
+            // Translate the vertex (point) away from the camera (in z)
+            transformed_vertex.z += 5;
+
+            // Save the transformed vertex in the array of transformed vertices
+            transformed_vertices[j] = transformed_vertex;
+        }
+
+        // TODO: Check backface culling
+        vec3_t vector_a = transformed_vertices[0]; /*   A   */
+        vec3_t vector_b = transformed_vertices[1]; /*  / \  */
+        vec3_t vector_c = transformed_vertices[2]; /* C---B */
+
+        // Get the vector subtraction of B-A and C-A
+        vec3_t vector_ab = vec3_sub(vector_b, vector_a);
+        vec3_t vector_ac = vec3_sub(vector_c, vector_a);
+
+        // Compute the face normal (using cross product to find perpendicular)
+        vec3_t normal = vec3_cross(vector_ab, vector_ac);
+   
+        // Normalize the face normal vector
+        vec3_normalize(&normal);
+
+        // Find the vector between a point in the triangle and the camera origin
+        vec3_t camera_ray = vec3_sub(camera_position, vector_a);
+
+        // Calculate how aligned the camera ray is with the face normal (using dot product)
+        float dot_normal_camera = vec3_dot(normal, camera_ray);
+
+        // If dot product is negative, continue and bypass this for-loop iteration
+        // We do not want to push a face that has a negative dot product
+        // This bypasses triangles that are looking away from the camera
+        if (dot_normal_camera < 0) {
+            continue;
+        }
+
+        triangle_t projected_triangle;
+
+        // Loop all three vertices to perform projection
+        for (int j = 0; j < 3; j++) {
+            // Project the current vertex
+            vec2_t projected_point = project(transformed_vertices[j]);
+            
+            // Scale and translate the projected points to the middle of the screen
+            projected_point.x += (window_width / 2);
+            projected_point.y += (window_height / 2);
+            
+            projected_triangle.points[j] = projected_point;
+        }
+    
+        // Save the projected triangle in the array of triangles to render
+        //triangles_to_render[i] = projected_triangle; 
+        array_push(triangles_to_render, projected_triangle);
     }
 }
 
@@ -112,24 +170,36 @@ void render(void){
     draw_grid();
     
     //Loop all projected points and render them
-    for (int i = 0; i < N_POINTS; i++){
-	    vec2_t projected_point = projected_points[i];
-	    draw_rect(
-		    projected_point.x + (window_width / 2.0),
-		    projected_point.y + (window_height / 2.0),
-		    4,
-		    4,
-		    0xFFFFFF00
-	    );
-        draw_line(projected_point.x,
-                projected_point.y,
-                projected_point.x + projected_point.x, projected_point.y + projected_point.y);
-    }
+    int num_of_triangles = array_length(triangles_to_render);
+    for (int i = 0; i < num_of_triangles; i++){
+	    triangle_t triangle = triangles_to_render[i];
 
-    draw_line(75, 75, 25, 25);
+        /*
+        // Draw vertex points
+        draw_rect(triangle.points[0].x, triangle.points[0].y, 3, 3, 0xFFFFFF00);   
+        draw_rect(triangle.points[1].x, triangle.points[1].y, 3, 3, 0xFFFFFF00);
+        draw_rect(triangle.points[2].x, triangle.points[2].y, 3, 3, 0xFFFFFF00); 
+        */
+
+        // draw unfilled triangle
+        draw_triangle(
+                triangle.points[0].x, triangle.points[0].y, // Vertex A
+                triangle.points[1].x, triangle.points[1].y, // Vertex B
+                triangle.points[2].x, triangle.points[2].y, // Vertex C
+                0xFF00FF00);
+
+        /* my implementation
+        draw_line(triangle.points[0].x, triangle.points[0].y, triangle.points[1].x, triangle.points[1].y, 0xFFFFFF00);
+        draw_line(triangle.points[1].x, triangle.points[1].y, triangle.points[2].x, triangle.points[2].y, 0xFFFFFF00);
+        draw_line(triangle.points[2].x, triangle.points[2].y, triangle.points[0].x, triangle.points[0].y, 0xFFFFFF00);
+        */
+
+    }       
+    //draw_line(triangle.points[0].x, triangle.points[0].y, 25, 25);
 
     // draw_pixel(20, 20, 0xFFFFFF00);
     // draw_rect(300, 200, 300, 150, 0xFF998500);
+    array_free(triangles_to_render);
 
     render_color_buffer();
     
@@ -138,6 +208,13 @@ void render(void){
     SDL_RenderPresent(renderer);
 }
 
+// Free memory that was dynamically allocated
+void free_resources(void) {
+    free(color_buffer);
+    array_free(mesh.faces);
+    array_free(mesh.vertices);
+}
+
 int main(void) {    
     is_running = initialize_window();
 
@@ -150,8 +227,9 @@ int main(void) {
 	    render();
     }
 
-    destroy_window();
 
+    destroy_window();
+    free_resources();
 
     return 0;
 }

src/mesh.c

@@ -0,0 +1,90 @@
+#include <stdio.h>
+#include "mesh.h"
+#include "array.h"
+#include <string.h>
+#include "array.h"
+
+mesh_t mesh = {
+    .vertices = NULL,
+    .faces = NULL,
+    .rotation = { 0, 0, 0 }
+};
+
+vec3_t cube_vertices[N_CUBE_VERTICES] = {
+    { .x = -1, .y = -1, .z = -1 },  // 1
+    { .x = -1, .y =  1, .z = -1 },  // 2
+    { .x =  1, .y =  1, .z = -1 },  // 3
+    { .x =  1, .y = -1, .z = -1 },  // 4
+    { .x =  1, .y =  1, .z =  1 },  // 5
+    { .x =  1, .y = -1, .z =  1 },  // 6
+    { .x = -1, .y =  1, .z =  1 },  // 7
+    { .x = -1, .y = -1, .z =  1 }   // 8  
+};
+
+
+face_t cube_faces[N_CUBE_FACES] = {
+    // front
+    { .a = 1, .b = 2, .c = 3 },
+    { .a = 1, .b = 3, .c = 4 },
+    // right
+    { .a = 4, .b = 3, .c = 5 },
+    { .a = 4, .b = 5, .c = 6 },
+    // back
+    { .a = 6, .b = 5, .c = 7 },
+    { .a = 6, .b = 7, .c = 8 },
+    // left
+    { .a = 8, .b = 7, .c = 2 },
+    { .a = 8, .b = 2, .c = 1 },
+    // top
+    { .a = 2, .b = 7, .c = 5 },
+    { .a = 2, .b = 5, .c = 3 },
+    // bottom
+    { .a = 6, .b = 8, .c = 1 },
+    { .a = 6, .b = 1, .c = 4 }
+};
+
+void load_cube_mesh_data(void) {
+    for (int i = 0; i < N_CUBE_VERTICES; i++) {
+        vec3_t cube_vertex = cube_vertices[i];
+        array_push(mesh.vertices, cube_vertex);
+    }
+    for (int i = 0; i < N_CUBE_FACES; i++) {
+        face_t cube_face = cube_faces[i];
+        array_push(mesh.faces, cube_face);
+    }
+};
+
+void load_obj_file_data(char* filename) {
+    FILE* file;
+    file = fopen(filename, "r");
+
+    char line[1024];
+
+    // read several lines
+    while (fgets(line, 1024, file)) {
+        // vertex information
+        if (strncmp(line, "v ", 2) == 0) {
+            vec3_t vertex;
+            sscanf(line, "v %f %f %f", &vertex.x, &vertex.y, &vertex.z);
+            array_push(mesh.vertices, vertex); 
+        }
+        // Face information
+        if (strncmp(line, "f ", 2) == 0) {
+            int vertex_indices[3];
+            int texture_indices[3];
+            int normal_indices[3];
+
+            sscanf(line, "f %d/%d/%d %d/%d/%d %d/%d/%d", 
+                    &vertex_indices[0], &texture_indices[0], &normal_indices[0],
+                    &vertex_indices[1], &texture_indices[1], &normal_indices[1],
+                    &vertex_indices[2], &texture_indices[2], &normal_indices[2]
+                    );
+            face_t face = {
+                .a = vertex_indices[0],
+                .b = vertex_indices[1],
+                .c = vertex_indices[2]
+            };
+            array_push(mesh.faces, face); 
+        } 
+    }
+}

src/mesh.h

@@ -0,0 +1,26 @@
+#ifndef MESH_H
+#define MESH_H
+
+#include "vector.h"
+#include "triangle.h"
+
+
+#define N_CUBE_VERTICES 8
+#define N_CUBE_FACES (6*2) // 6 cube faces, 2 triangles per face
+
+extern vec3_t cube_vertices[N_CUBE_VERTICES];
+
+extern face_t cube_faces[N_CUBE_FACES];
+
+// Define a struct for dynamic size meshes, with an array of vertices and faces
+typedef struct {
+    vec3_t* vertices; // dynamic array of vertices
+    face_t* faces;    // dynamic array of faces
+    vec3_t rotation;  // rotation with x, y, and z values
+} mesh_t;
+
+extern mesh_t mesh;
+
+void load_cube_mesh_data(void);
+void load_obj_file_data(char* filename);
+#endif

src/triangle.c

@@ -0,0 +1,3 @@
+#include "triangle.h"
+
+//TODO

src/triangle.h

@@ -0,0 +1,19 @@
+#ifndef TRIANGLE_H
+#define TRIANGLE_H
+
+#include "vector.h"
+
+typedef struct {
+    int a;
+    int b;
+    int c;
+} face_t;
+
+typedef struct {
+    vec2_t points[3];
+} triangle_t;
+
+#endif
+
+
+

src/vector.c

@@ -1,6 +1,133 @@
 #include "vector.h"
 #include <math.h>
 
+////////////////////////////////////////////////////////////////////////////////
+// implementations of vector 2d functions
+////////////////////////////////////////////////////////////////////////////////
+float vec2_length(vec2_t v) {
+    return sqrt(v.x * v.x + v.y * v.y); 
+}
+
+vec2_t vec2_add(vec2_t a, vec2_t b) {
+    vec2_t result = {
+        .x = a.x + b.x,
+        .y = a.y + b.y
+    };
+
+    return result;
+}
+
+vec2_t vec2_sub(vec2_t a, vec2_t b) {
+    vec2_t result = {
+        .x = a.x - b.x,
+        .y = a.y - b.y,
+    };
+    
+    return result; 
+}
+
+vec2_t vec2_mul(vec2_t v, float factor) {
+    vec2_t result = {
+        .x = v.x * factor,
+        .y = v.y * factor
+    };
+
+    return result;
+}
+
+vec2_t vec2_div(vec2_t v, float factor) {
+    vec2_t result = {
+        .x = v.x / factor,
+        .y = v.y / factor
+    };
+
+    return result;
+}
+
+// Dot product
+float vec2_dot(vec2_t a, vec2_t b) {
+    return (a.x * b.x) + (a.y * b.y);
+}
+
+void vec2_normalize(vec2_t* v) {
+    // Get length by squaring x and y, adding together and taking sqrt
+    float length = sqrt((v->x * v->x) + (v->y * v->y));
+    v->x /= length; // directly modifies x and y no need to return
+    v->y /= length;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// implementations of vector 3d functions
+////////////////////////////////////////////////////////////////////////////////
+float vec3_length(vec3_t v) {
+    return sqrt(v.x * v.x + v.y * v.y + v.z * v.z); 
+}
+
+vec3_t vec3_add(vec3_t a, vec3_t b) {
+    vec3_t result = {
+        .x = a.x + b.x,
+        .y = a.y + b.y,
+        .z = a.z + b.z
+    };
+
+    return result;
+}
+
+vec3_t vec3_sub(vec3_t a, vec3_t b) {
+    vec3_t result = {
+        .x = a.x - b.x,
+        .y = a.y - b.y,
+        .z = a.z - b.z
+    };
+
+    return result;
+}
+
+vec3_t vec3_mul(vec3_t v, float factor) {
+    vec3_t result = {
+        .x = v.x * factor,
+        .y = v.y * factor,
+        .z = v.z * factor
+    };
+
+    return result;
+}
+
+// Division
+vec3_t vec3_div(vec3_t v, float factor) {
+    vec3_t result = {
+        .x = v.x / factor,
+        .y = v.y / factor,
+        .z = v.z / factor
+    };
+
+    return result;
+}
+
+// Cross Product - helps to find perpendicular vector between two vectors
+vec3_t vec3_cross(vec3_t a, vec3_t b) {
+    vec3_t result = {
+        .x = a.y * b.z - a.z * b.y,
+        .y = a.z * b.x - a.x * b.z,
+        .z = a.x * b.y - a.y * b.x
+    }; 
+    return result;
+}
+
+// Dot Product - helps to find how aligned two vectors are to eachother
+float vec3_dot(vec3_t a, vec3_t b) {
+    return (a.x * b.x) + (a.y * b.y) + (a.z * b.z);
+
+}
+
+// Normalize a vec3_t vector
+void vec3_normalize(vec3_t* v) {
+    float length = sqrt((v->x * v->x) + (v->y * v->y) + (v->z * v->z));
+    v->x /= length;
+    v->y /= length;
+    v->z /= length;
+}
+
 vec3_t vec3_rotate_x(vec3_t v, float angle) {
    vec3_t rotated_vector = {
       .x = v.x,
@@ -28,6 +155,7 @@ vec3_t vec3_rotate_z(vec3_t v, float angle) {
    return rotated_vector;
 }
 
+/*
 vec3_t cube_vertice[8] = {
     { .x = -1, .y = -1, .z = -1 },  // 1
     { .x = -1, .y =  1, .z = -1 },  // 2
@@ -37,8 +165,9 @@ vec3_t cube_vertice[8] = {
     { .x =  1, .y = -1, .z =  1 },  // 6
     { .x = -1, .y =  1, .z =  1 },  // 7
     { .x = -1, .y = -1, .z =  1 }   // 8  
-};
+};*/
 
+/*
 face_t cube_faces[12] = {
     // front
     { .a = 1, .b = 2, .c = 3 },
@@ -58,4 +187,4 @@ face_t cube_faces[12] = {
     // bottom
     { .a = 6, .b = 8, .c = 1 },
     { .a = 6, .b = 1, .c = 4 }
-};
+};*/

src/vector.h

@@ -12,12 +12,31 @@ typedef struct {
     float z;
 } vec3_t;
 
-typedef struct {
-    int a, b, c;
-} face_t;
+/////////////////////////////////////////////////////////////////////////////////
+// Vector 2D Functions
+////////////////////////////////////////////////////////////////////////////////
+float vec2_length(vec2_t v);
+vec2_t vec2_add(vec2_t a, vec2_t b);
+vec2_t vec2_sub(vec2_t a, vec2_t b);
+vec2_t vec2_mul(vec2_t v, float factor);
+vec2_t vec2_div(vec2_t v, float factor);
+void vec2_normalize(vec2_t* v);
+
+////////////////////////////////////////////////////////////////////////////////
+// Vector 3D Functions
+////////////////////////////////////////////////////////////////////////////////
+float vec3_length(vec3_t v);
+vec3_t vec3_add(vec3_t a, vec3_t b);
+vec3_t vec3_sub(vec3_t a, vec3_t b);
+vec3_t vec3_mul(vec3_t v, float factor);
+vec3_t vec3_div(vec3_t v, float factor);
+vec3_t vec3_cross(vec3_t a, vec3_t b);
 
 vec3_t vec3_rotate_x(vec3_t v, float angle);
 vec3_t vec3_rotate_y(vec3_t v, float angle);
 vec3_t vec3_rotate_z(vec3_t v, float angle);
+vec3_t vec3_cross(vec3_t a, vec3_t b);
+float vec3_dot(vec3_t a, vec3_t b);
+void vec3_normalize(vec3_t* v);
 
 #endif