fanglei80 / saitoobjloader Goto Github PK

I like to publish my code under the BSD/MIT, and I really want to experiment 
with your loader. Would you guys mind relicensing it or dual licensing? I 
understand if not. 

Sorry for posting this to your issues tracker. 

Thanks!

What steps will reproduce the problem?
1. create a blender model
2. UV assign some texture file
3. export it as .obj file and load it in processing

What is the expected output? What do you see instead?
It doesnot load the model itself

What version of the product are you using? On what operating system?
in is on windows version 23

Please provide any additional information below.

What steps will reproduce the problem?
1. Load an obj file with texture coordinates

What is the expected output? What do you see instead?

Texture coordinates are equal to the vertex coordinates.


What version of the product are you using? On what operating system?

020

Please provide any additional information below.

Please replace the following 3 lines in OBJModel.java in line 177


PVector[] vs = vertices.toArray(new PVector[vertices.size()]);
PVector[] tVs = vertices.toArray(new PVector[textureVertices.size()]);
PVector[] nVs = vertices.toArray(new PVector[normalVertices.size()]);


with the lines


PVector[] vs = vertices.toArray(new PVector[vertices.size()]);
PVector[] tVs = textureVertices.toArray(new PVector[textureVertices.size()]);
PVector[] nVs = normalVertices.toArray(new PVector[normalVertices.size()]);


to fix the bug. Thanks for your work.

If you want to reference .mtl files relative to .obj files this seems to be 
impossible making it really hard to manage the complexity of multiple objects.

Initially I have these in the Processing data directory. They reference each 
other by name and will load correctly...

confused.obj
confused.mtl
confused_texture1.png
confused_texture2.png

However, if I try to separate out the Obj files into subdirectories (e.g. one 
collection of .obj, .mtl and any .png textures for that object), then ObjModel 
refuses to load the .mtl or .png files which are alongside the .obj file. That 
is to say the paths are not interpreted relatively and I can't work out how to 
force this.

The new filesystem looks as follows, and loading the .obj containing either the 
reference 'confused.mtl' or './confused.mtl' means ObjModel can't load the 
materials.

confused/confused.obj
confused/confused.mtl
confused/confused_texture1.png
confused/confused_texture2.png

Any workaround would be welcome as I think I'm going to get a load of obj files 
with madly named textures and materials which will be impossible to manage 
without giving them a directory each.

What steps will reproduce the problem?
1. Load an OBJ which has faces with only two vertex indexes (loose edges 
without faces).
2. Objloader will crash due to index out of bounds - see line 864 of 
OBJModel.java

What is the expected output? What do you see instead?
Expected output: Most likely just ignore any 2-vertex faces. What we see: It 
crashes.

What version of the product are you using? On what operating system?
Latest version, 023b, will happen on all OSes.

Please provide any additional information below.
The OBJ spec requires faces to have a minimum of 3 vertex indexes. However, 
many programs will write OBJs with loose edges specifying only 2 vertex indexes 
per face. Though it's not supported by the spec, it is somewhat common (and 
arguably useful). Objloader doesn't necessarily need to load or display loose 
edges but should at least handle these files without a crash. Line 855 is a 
check to see if at least 3 verts have been specified, but for some reason this 
code is commented out so the error is unhandled. Reinstating this commented 
code should solve the issue.

Hi,
I'm testing your tool with facegen generated models. Unfortunately facegen 
doesn't export normals in OBJ files.
Would it be possible to compute them by hand when loading the OBJ into P5?

Many thanks!
Josep M

Hi first congrats for your work

What steps will reproduce the problem?
Export obj with blender put difusse color in Kd tag like it is spected, but
you use Ka for fill color when it is abient color

What is the expected output? What do you see instead?
use Kd information for fill color

What version of the product are you using? On what operating system?
svn last version

Please provide any additional information below.
ty a lot

see attached file...

the solution is inside the Face-Object:

the following methods need to be corrected:

    public int[] getNormalIndices()
    public int[] getTextureIndices()

into this (suggestion)

    public int[] getNormalIndices() {
        int[] v = new int[getNormalIndexCount()];

        for (int i = 0; i < v.length; i++)
            v[i] = getNormalIndex(i);

        return v;
    }

    public int[] getTextureIndices() {

        int[] v = new int[getTextureIndexCount()];

        for (int i = 0; i < v.length; i++)
            v[i] = getTextureIndex(i);

        return v;
    }

plus the following methods need to be added:

    public int getTextureIndexCount() {
        return uvIndices.size();
    }

    public int getNormalIndexCount() {
        return normalIndices.size();
    }

cheers

martin

What steps will reproduce the problem?
1. unzip objeto_textura.zip
2. run objeto_textura.pde


What is the expected output? What do you see instead?
* cilinder with no image (from directory BatataLata)
* cilinder with image (from directory BatataLata)

What version of the product are you using? On what operating system?
* 2.1
* linux mint 15


Please provide any additional information below.
Smooth level 2 is not available. Using 1 instead
draw mode:      
Loading this = BatataLata.obj
Loading this = BatataLata.mtl
material:       'Color_A02'
material:       'Pringles'
texture diffuse         'BatataLata/Pringles.jpg'
material:       'Color_003'
found group
group 'Mesh1'
group 'Group2'
group 'Group1'
group 'Model'
found group
group 'Mesh2'
Obj Name:       default

V  Size:        1025
Vt Size:        3139
Vn Size:        581
G  Size:        6
S  Size:        37

thanks!!

What steps will reproduce the problem?
1. Produce a object with a png texture
2. Load up in processing
3. Watch as your model has random inverted normals

What is the expected output? What do you see instead?
I expect to see a nice model, but with a PNG texture, the model instead 
produces artifacts, mostly which appear to be flipped normals.

What version of the product are you using? On what operating system?
OBJLoader 23b, Blender 2.61 (custom build, r43252) is the exporter, Windows 7

Please provide any additional information below.
If you use a JPG, it turns out alright. Could fix the bug or either post 
something in the documents about the problem with using PNG's

What steps will reproduce the problem?
1. Run the sketch, and look at the 3 rectangles that are supposed to be all 3 
red.   

What is the expected output? What do you see instead?
fill is white for everything that i draw after the drawing the model.
Stroke still works.

What version of the product are you using? On what operating system?
processing 1.5.1 on windows and mac.

Please provide any additional information below.
Model is exported from softimage 2013.

If you disable Ks 1.000000 1.000000 1.000000 in the material file then the 
problem is gone.
You can comment m_sea.draw(); to see that the problem is really related to 
objloader.

What steps will reproduce the problem?
1. Create an applet that loads a model with texture;
2. The model and texture files should be inside a directory inside data folder
3. Run the applet via browser

What is the expected output? What do you see instead?
Although running the applet on eclipse works fine, when exporting an applet to 
run via browser, only the model is loaded, not the textures.

What version of the product are you using? On what operating system?
OBJLoader 0.21; Processing 1.2.1 on Linux;

Please provide any additional information below.

I get the following error:
Loading this = resources/models/esq/mao_2.obj
Loading this = ./resources/models/esq/mao_2.mtl
./resources/models/esq/mao_2.mtl does not exist or could not be read
Could not find this file ./resources/models/esq/mao_2.mtl
java.lang.NullPointerException
    at saito.objloader.OBJModel.parseMTL(OBJModel.java:973)
    at saito.objloader.OBJModel.parseOBJ(OBJModel.java:813)
    at saito.objloader.OBJModel.load(OBJModel.java:577)
    at saito.objloader.OBJModel.<init>(OBJModel.java:109)
    at br.usp.libras.graph.AnimObj.<init>(AnimObj.java:52)

As you can see, the path used for loading the .obj is DIFFERENT from the used 
to load the .mtl. The second one has a "./" in the beginning, which can  be the 
cause of the error. 
These resources are inside the data folder. .obj loads perfectly, but .mtl not.

What steps will reproduce the problem?
1. Included the libraries ObjLoader and Artoolkit for Processing, which allows 
3D model to pop out via webcam
2. Runs
3. Show the hiro picture to the webcam and texture-less model comes out

What is the expected output? What do you see instead?
When you show the hiro picture 
(http://www.neo-tech-lab.co.uk/arsensor/Article.files/HiroPattern.png) to the 
webcam, I expected the 3D model to be textured. Everything works fine except it 
has no texture on it. The model is entirely white. 

What version of the product are you using? On what operating system?
Processing 2.2.1
NyAR4psg/2.0.0;NyARToolkit/4.1.1
Win 8.1

Please provide any additional information below.

Error:
...
texture diffuse 
        'C:Users/homar_000/Documents/Processing/sketch_3D_model_via_camera/data/BL_WHA
LEtexture.jpg'
The file 
"C:Users/homar_000/Documents/Processing/sketch_3D_model_via_camera/data/BL_WHALE
texture.jpg" is missing or inaccessible, make sure the URL is valid or that the 
file has been added to your sketch and is readable.

I have attached the rar folder here.

What steps will reproduce the problem?
1. run the file atach
2. drag with the mouse (only turn right)
3.

What is the expected output? What do you see instead?
the object. obj has glass as art, the image "input.jpg" through the object, but 
passing by, the picture is not visible. The purpose if it is transparent to 
itself.


What version of the product are you using? On what operating system?
processing: 1.5.1
OS: linux ubuntu 11.01
java: OpenJDK 1.6.0_24


Please provide any additional information below.

What steps will reproduce the problem?
1. call model.load() within an object class
2. call model.draw()

What is the expected output? What do you see instead?
  I expect that the object(s) would be displayed without materials and triggering zero erros. The console triggers a null pointer error on the material file, in spite of the initial materials on the model being disabled. After running for about a minute, noticeable lag occurs in the model navigation.

What version of the product are you using? On what operating system?
saitoobjloader revision 18 on mac OS 10.6.

Please provide any additional information below.
The attached document uses the peasycam library, which is not included but 
easily removed/replaced.


The first line from the error below, copied from the console, is in white 
(triggered by saitoobjloader) and the remainder are red (processing-triggered):
Could not find this file (null).mtl

java.lang.NullPointerException
    at saito.objloader.OBJModel.parseMTL(OBJModel.java:978)
    at saito.objloader.OBJModel.parseOBJ(OBJModel.java:801)
    at saito.objloader.OBJModel.load(OBJModel.java:686)
    at classWithOBJimport$IndexedObject.renderObj(classWithOBJimport.java:93)
    at classWithOBJimport.draw(classWithOBJimport.java:47)
    at processing.core.PApplet.handleDraw(PApplet.java:1426)
    at processing.core.PApplet.run(PApplet.java:1328)
    at java.lang.Thread.run(Thread.java:637)
(null).mtl does not exist or could not be read

What steps will reproduce the problem?
1. Load the sketch attached


What is the expected output? What do you see instead?

A 3D model without textures other than a triangle on the back of the head.


What version of the product are you using? On what operating system?

Processing 1.5.1 (used this version of because of compatibility with the 
Nyartoolkit library)
OBJ loader library 023
MAC OS X


Please provide any additional information below.

Only one texture file is used, so it omits the possibility of errors caused by 
multiple.