Problems with textures in .obj files

soheilvb wrote at 2012-04-09 15:11:

hi again ..

http://parsaspace.com/files/1540954884/eye.rar.html

this object file is a model of eye. that needs two material: solidcolorbrush + imagebrush.

but ObjReader only recognize Solidcolorbrush ..

3ds max shows the obj file OK.

tnx

objo wrote at 2012-04-09 15:36:

I think there is some error in the model. Delete from line 1095 to the end, and you will see the image texture. Are surface normals correct? Are the two surfaces coincident?

soheilvb wrote at 2012-04-09 15:49:

this model has two texture ... from line 1095 is color texture.  i think the model is ok.

I just converted it to Xaml with Zam 3D ....

that's the result ...

<Viewbox x:Name="ZAM3DViewbox" ClipToBounds="true" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/interactivedesigner/2006" xmlns:c="http://schemas.openxmlformats.org/markup-compatibility/2006" c:Ignorable="d">

    <Viewport3D x:Name="ZAM3DViewport3D" ClipToBounds="true" Width="400" Height="300">
        <Viewport3D.Resources>
            <ResourceDictionary>
                <MaterialGroup x:Key="_Eye,_L_~001706NMR1" >
                    <DiffuseMaterial>
                        <DiffuseMaterial.Brush>
                            <SolidColorBrush Color="#E6E6E6" Opacity="1.000000"/>
                        </DiffuseMaterial.Brush>
                    </DiffuseMaterial>
                </MaterialGroup>
                <MaterialGroup x:Key="_Eye,_L_~00171MR2" >
                    <DiffuseMaterial>
                        <DiffuseMaterial.Brush>
                            <SolidColorBrush Color="#E6E6E6" Opacity="1.000000"/>
                        </DiffuseMaterial.Brush>
                    </DiffuseMaterial>
                </MaterialGroup>
                <Transform3DGroup x:Key="SceneTR8" >
                    <TranslateTransform3D OffsetX="0" OffsetY="0" OffsetZ="0"/>
                    <ScaleTransform3D ScaleX="1" ScaleY="1" ScaleZ="1"/>
                    <RotateTransform3D>
                        <RotateTransform3D.Rotation>
                            <AxisAngleRotation3D Angle="0" Axis="0 1 0"/>
                        </RotateTransform3D.Rotation>
                    </RotateTransform3D>
                    <TranslateTransform3D OffsetX="0" OffsetY="0" OffsetZ="0"/>
                </Transform3DGroup>
                <Transform3DGroup x:Key="Eye__L__00OR10TR9" >
                    <TranslateTransform3D OffsetX="0" OffsetY="0" OffsetZ="0"/>
                    <ScaleTransform3D ScaleX="1" ScaleY="1" ScaleZ="1"/>
                    <RotateTransform3D>
                        <RotateTransform3D.Rotation>
                            <AxisAngleRotation3D Angle="0" Axis="0 1 0"/>
                        </RotateTransform3D.Rotation>
                    </RotateTransform3D>
                    <TranslateTransform3D OffsetX="-1.47256" OffsetY="3.79339" OffsetZ="7.91067"/>
                </Transform3DGroup>
                <MeshGeometry3D x:Key="Eye__L__00OR10GR11"
                    TriangleIndices="0,1,2 0,2,3 3,2,4 3,4,5 5,4,6 5,6,7 7,6,8 7,8,9 9,8,10 9,10,11 11,10,12 11,12,13 13,12,14 13,14,15 15,14,16 15,16,17 17,16,18 17,18,19 19,18,20 19,20,21 21,20,22 21,22,23 23,22,24 23,24,25 25,24,26 25,26,27 27,26,28 27,28,29 29,28,30 29,30,31 31,30,32 31,32,33 33,32,34 33,34,35 35,34,36 35,36,37 37,36,38 37,38,39 39,38,1 39,1,0 2,1,40 2,40,41 41,40,42 41,42,43 43,42,44 43,44,45 45,44,46 45,46,47 47,46,48 47,48,49 49,48,50 49,50,51 51,50,52 51,52,10 10,52,12 50,48,53 53,48,46 53,46,54 54,46,55 54,55,56 56,55,57 56,57,58 58,57,59 58,59,16 16,59,18 57,55,60 60,55,46 60,46,61 61,46,62 61,62,63 63,62,64 63,64,65 65,64,66 65,66,22 22,66,24 64,62,67 67,62,46 67,46,68 68,46,69 68,69,70 70,69,71 70,71,72 72,71,73 72,73,28 28,73,30 71,69,74 74,69,46 74,46,75 75,46,76 75,76,77 77,76,78 77,78,79 79,78,80 79,80,34 34,80,36 40,1,81 40,81,82 82,81,83 82,83,84 84,83,85 84,85,46 46,85,86 46,86,76 76,86,78 42,40,82 42,82,87 87,82,84 87,84,46 87,46,44 87,44,42 4,2,41 4,41,88 88,41,43 88,43,89 89,43,45 89,45,47 89,47,49 89,49,90 90,49,51 90,51,8 8,51,10 16,14,58 58,14,91 58,91,56 56,91,92 56,92,54 54,92,53 50,53,92 50,92,52 52,92,91 52,91,12 12,91,14 22,20,65 65,20,93 65,93,63 63,93,94 63,94,61 61,94,60 57,60,94 57,94,59 59,94,93 59,93,18 18,93,20 28,26,72 72,26,95 72,95,70 70,95,96 70,96,68 68,96,67 64,67,96 64,96,66 66,96,95 66,95,24 24,95,26 34,32,79 79,32,97 79,97,77 77,97,98 77,98,75 75,98,74 71,74,98 71,98,73 73,98,97 73,97,30 30,97,32 1,38,81 81,38,99 81,99,83 83,99,100 83,100,85 85,100,86 78,86,100 78,100,80 80,100,99 80,99,36 36,99,38 88,89,90 88,90,6 6,90,8 88,6,4 "
                    Normals="0.369389,0.0499414,-0.927932 0.361235,-0.0803701,-0.929005 0.343073,0.0395633,-0.938475 0.312606,0.165109,-0.935423 0.291483,0.147147,-0.945191 0.225798,0.255704,-0.940016 0.210767,0.232141,-0.949573 0.11833,0.314488,-0.941857 0.110499,0.286147,-0.951793 -0.000762098,0.334409,-0.942428 -0.000585114,0.304891,-0.952387 -0.119736,0.313353,-0.942058 -0.111681,0.286425,-0.951572 -0.227711,0.255072,-0.939727 -0.212214,0.230556,-0.949636 -0.31286,0.161172,-0.936025 -0.292199,0.143357,-0.945552 -0.365028,0.0445468,-0.92993 -0.342717,0.0354851,-0.938768 -0.381984,-0.0809939,-0.920613 -0.358593,-0.0817561,-0.929907 -0.36487,-0.206285,-0.907919 -0.34213,-0.197675,-0.918625 -0.311548,-0.321136,-0.894321 -0.291858,-0.305298,-0.906428 -0.225836,-0.413278,-0.882156 -0.211393,-0.391367,-0.895626 -0.118541,-0.472166,-0.873503 -0.110234,-0.444977,-0.888732 0.000913178,-0.49136,-0.870956 0.000633217,-0.463068,-0.886322 0.11946,-0.470584,-0.874231 0.111102,-0.444647,-0.888789 0.227094,-0.412008,-0.882427 0.211564,-0.391099,-0.895702 0.314198,-0.323238,-0.892635 0.291126,-0.306613,-0.90622 0.369296,-0.207518,-0.905846 0.342846,-0.199176,-0.918034 0.387987,-0.0786016,-0.918307 0.324433,-0.0803225,-0.942492 0.308088,0.0269597,-0.950976 0.234033,-0.0803974,-0.968899 0.221669,-0.00319914,-0.975117 0.142688,-0.0798759,-0.986539 0.134144,-0.0331751,-0.990406 -0.000268032,-0.0865656,-0.996246 0.112319,0.00875091,-0.993634 0.0796357,0.0413078,-0.995968 0.13528,0.121236,-0.983362 0.0689846,0.155377,-0.985444 0.0989759,0.248559,-0.963547 -0.00141624,0.264502,-0.964384 0.0385893,0.0613806,-0.997368 -0.00528855,0.0671588,-0.997728 -0.0490705,0.0579077,-0.997115 -0.0754129,0.153215,-0.985311 -0.140807,0.116285,-0.983184 -0.19189,0.197343,-0.961371 -0.264256,0.119033,-0.957079 -0.0886039,0.0344468,-0.995471 -0.119772,-0.00176789,-0.9928 -0.138907,-0.045143,-0.989276 -0.225113,-0.0126729,-0.97425 -0.235412,-0.087537,-0.967946 -0.324389,-0.0836267,-0.94222 -0.309051,-0.187378,-0.932404 -0.14416,-0.0911193,-0.98535 -0.135448,-0.136834,-0.98129 -0.112888,-0.179355,-0.977286 -0.188391,-0.232537,-0.954167 -0.134736,-0.287803,-0.948164 -0.189,-0.361309,-0.913091 -0.098261,-0.409496,-0.907005 -0.0799498,-0.212302,-0.973928 -0.0388871,-0.232446,-0.971832 0.00521591,-0.238188,-0.971205 0.00330037,-0.333574,-0.942718 0.0752942,-0.320192,-0.944356 0.10076,-0.408974,-0.906966 0.190882,-0.360151,-0.913157 0.30901,-0.187956,-0.932301 0.223612,-0.15793,-0.961798 0.191131,-0.228462,-0.954607 0.11846,-0.170638,-0.978187 0.0880815,-0.205787,-0.974625 0.0492329,-0.228868,-0.972212 0.137334,-0.127336,-0.982306 0.260923,0.123553,-0.95742 0.187547,0.0664035,-0.980009 0.189189,0.199867,-0.961385 -0.101175,0.247015,-0.963715 -0.00361853,0.166206,-0.986084 -0.309706,0.0208301,-0.950604 -0.192608,0.0583714,-0.979538 -0.262682,-0.284172,-0.922087 -0.2234,-0.162377,-0.961107 0.00138543,-0.426042,-0.904702 -0.0689416,-0.322363,-0.944102 0.26267,-0.284486,-0.921994 0.140145,-0.284375,-0.948415 "
                    TextureCoordinates="0.947105,0.360542 0.921044,0.510559 0.900086,0.377743 0.879857,0.226574 0.84031,0.257793 0.775432,0.120644 0.746455,0.162632 0.643852,0.0524025 0.628544,0.101383 0.497875,0.0288048 0.497875,0.0805283 0.352081,0.0524025 0.367024,0.101383 0.220501,0.120644 0.249296,0.162632 0.116258,0.226574 0.156351,0.257793 0.050468,0.360542 0.0976691,0.377743 0.0275054,0.508762 0.07744,0.510559 0.050468,0.657394 0.0976691,0.643364 0.116258,0.790962 0.156351,0.763519 0.220501,0.897076 0.249296,0.858684 0.352081,0.965534 0.367024,0.919918 0.497875,0.988922 0.497875,0.940773 0.643852,0.965534 0.628544,0.919918 0.775432,0.897076 0.746455,0.858684 0.879857,0.790962 0.84031,0.763519 0.947105,0.657394 0.900086,0.643364 0.970067,0.508762 0.833931,0.51355 0.817347,0.408032 0.776707,0.515156 0.763039,0.427605 0.662076,0.516941 0.654057,0.46566 0.497875,0.518509 0.63073,0.418648 0.594464,0.381794 0.661894,0.285805 0.584076,0.245228 0.601754,0.188622 0.497875,0.171833 0.548903,0.3582 0.497875,0.350201 0.44703,0.3582 0.411856,0.245228 0.334221,0.285805 0.300505,0.237369 0.226697,0.312843 0.401468,0.381794 0.365566,0.418648 0.342968,0.46566 0.234898,0.427605 0.221959,0.515156 0.164917,0.51355 0.180589,0.619247 0.335314,0.516941 0.342968,0.568432 0.365566,0.615238 0.272987,0.682102 0.334221,0.744312 0.300505,0.789898 0.393997,0.838646 0.401468,0.652088 0.44703,0.675892 0.497875,0.683891 0.497875,0.79874 0.584076,0.785072 0.601754,0.838646 0.695244,0.789898 0.817348,0.619247 0.763039,0.602512 0.723492,0.682102 0.63073,0.615238 0.594464,0.652088 0.548903,0.675892 0.654057,0.568432 0.769782,0.312843 0.723492,0.348583 0.695244,0.237369 0.393997,0.188622 0.497875,0.231777 0.180589,0.408032 0.272987,0.348583 0.226697,0.714386 0.234898,0.602512 0.497875,0.855213 0.411856,0.785072 0.769782,0.714386 0.661894,0.744312 "
                    Positions="-1.3579,-0.0506532,7.78254 -1.35959,-0.0594957,7.78203 -1.36094,-0.0516672,7.78135 -1.36225,-0.0427568,7.78185 -1.36481,-0.0445971,7.78073 -1.36902,-0.0365129,7.78131 -1.37089,-0.0389881,7.78024 -1.37754,-0.0324907,7.78096 -1.37853,-0.0353777,7.77993 -1.38699,-0.0311,7.78084 -1.38699,-0.0341487,7.77982 -1.39643,-0.0324907,7.78096 -1.39546,-0.0353777,7.77993 -1.40495,-0.0365129,7.78131 -1.40308,-0.0389881,7.78024 -1.4117,-0.0427568,7.78185 -1.4091,-0.0445971,7.78073 -1.41596,-0.0506532,7.78254 -1.4129,-0.0516672,7.78135 -1.41745,-0.0593898,7.7833 -1.41421,-0.0594957,7.78203 -1.41596,-0.0681505,7.78406 -1.4129,-0.0673234,7.78271 -1.4117,-0.0760233,7.78474 -1.4091,-0.0744059,7.78332 -1.40495,-0.082278,7.78529 -1.40308,-0.0800152,7.78381 -1.39643,-0.086313,7.78564 -1.39546,-0.0836244,7.78412 -1.38699,-0.0876918,7.78576 -1.38699,-0.0848536,7.78423 -1.37754,-0.086313,7.78564 -1.37853,-0.0836244,7.78412 -1.36902,-0.082278,7.78529 -1.37089,-0.0800152,7.78381 -1.36225,-0.0760233,7.78474 -1.36481,-0.0744059,7.78332 -1.3579,-0.0681505,7.78406 -1.36094,-0.0673234,7.78271 -1.35641,-0.0593898,7.7833 -1.36523,-0.0596721,7.77992 -1.3663,-0.0534525,7.77938 -1.36893,-0.0597668,7.77877 -1.36982,-0.0546062,7.77832 -1.37636,-0.0598719,7.7775 -1.37688,-0.0568492,7.77724 -1.38699,-0.0599642,7.77641 -1.37839,-0.0540781,7.777 -1.38073,-0.0519061,7.77681 -1.37637,-0.0462482,7.7776 -1.38141,-0.0438561,7.77739 -1.38026,-0.04052,7.77826 -1.38699,-0.0395305,7.77817 -1.38368,-0.0505152,7.77669 -1.38699,-0.0500438,7.77665 -1.39028,-0.0505152,7.77669 -1.39256,-0.0438561,7.77739 -1.39759,-0.0462482,7.7776 -1.39977,-0.0433931,7.77851 -1.40455,-0.0478418,7.77889 -1.39323,-0.0519061,7.77681 -1.39556,-0.0540781,7.777 -1.39702,-0.0568492,7.77724 -1.40402,-0.0546062,7.77832 -1.40486,-0.0597668,7.77877 -1.40855,-0.0596721,7.77992 -1.40753,-0.0659022,7.78046 -1.39752,-0.0598719,7.7775 -1.39702,-0.0629067,7.77776 -1.39556,-0.0656657,7.778 -1.40155,-0.069607,7.77962 -1.39759,-0.0732737,7.77994 -1.39977,-0.0759609,7.78134 -1.39372,-0.0788341,7.78159 -1.39323,-0.0678377,7.77819 -1.39028,-0.0692408,7.77831 -1.38699,-0.0697124,7.77835 -1.38699,-0.0764818,7.78022 -1.38141,-0.0756762,7.78015 -1.38026,-0.0788341,7.78159 -1.37421,-0.0759609,7.78134 -1.3663,-0.0659022,7.78046 -1.36982,-0.0649157,7.77922 -1.37238,-0.069607,7.77962 -1.37839,-0.0656657,7.778 -1.38073,-0.0678377,7.77819 -1.38368,-0.0692408,7.77831 -1.37688,-0.0629067,7.77776 -1.36938,-0.0478418,7.77889 -1.37238,-0.0499485,7.77792 -1.37421,-0.0433931,7.77851 -1.39372,-0.04052,7.77826 -1.38699,-0.0430636,7.77732 -1.40753,-0.0534525,7.77938 -1.40155,-0.0499485,7.77792 -1.40455,-0.0715098,7.78095 -1.40402,-0.0649157,7.77922 -1.38699,-0.0798106,7.78167 -1.39256,-0.0756762,7.78015 -1.36938,-0.0715098,7.78095 -1.37637,-0.0732737,7.77994 "
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                />
            </ResourceDictionary>
        </Viewport3D.Resources>

        <Viewport3D.Camera>
            <PerspectiveCamera x:Name="FrontOR7" FarPlaneDistance="10" LookDirection="0,0,-1" UpDirection="0,1,0" NearPlaneDistance="0.1" Position="-2.85574,3.73999,16.0883" FieldOfView="39.5978" />
        </Viewport3D.Camera>

        <ModelVisual3D>
            <ModelVisual3D.Content>
                <Model3DGroup x:Name="Scene" Transform="{DynamicResource SceneTR8}"> <!-- Scene (XAML Path = ) -->
                    <AmbientLight Color="#646464" />
                    <DirectionalLight Color="#FFFFFF" Direction="-0.612372,-0.5,-0.612372" />
                    <DirectionalLight Color="#FFFFFF" Direction="0.612372,-0.5,-0.612372" />
                    <Model3DGroup x:Name="Eye__L__00OR10" Transform="{DynamicResource Eye__L__00OR10TR9}"> <!-- Eye__L__00 (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3]) -->
                        <GeometryModel3D x:Name="Eye__L__00OR10GR11" Geometry="{DynamicResource Eye__L__00OR10GR11}" Material="{DynamicResource _Eye,_L_~001706NMR1}" BackMaterial="{DynamicResource _Eye,_L_~001706NMR1}"/>
                        <GeometryModel3D x:Name="Eye__L__00OR10GR12" Geometry="{DynamicResource Eye__L__00OR10GR12}" Material="{DynamicResource _Eye,_L_~00171MR2}" BackMaterial="{DynamicResource _Eye,_L_~00171MR2}"/>
                    </Model3DGroup>
                </Model3DGroup>
            </ModelVisual3D.Content>
        </ModelVisual3D>
    </Viewport3D>
</Viewbox>

as you can see, that created two Geometrymodel3d with different geometry and different textures.

maybe that's the problem ...

soheilvb wrote at 2012-04-09 16:16:

i just converted the .obj file to .3ds. your StudioReader works perfect...

objo wrote at 2012-04-09 21:30:

I see the model contains a single group with two different materials. I guess 3ds max is correct and the .obj file format should support this. I'll check in a fix in a moment.

objo wrote at 2012-04-09 21:34:

ps. the definition of the mtllib statement is

mtllib filename1 filename2

so it is probably not correct to use spaces in the filename.

The implementation in this library only supports one filename in the mtllib statement.

soheilvb wrote at 2012-04-10 00:07:

thanks for your fast response and fix ...