David

We have builded a patch witch load 3D objects (.obj) with a gl.model. Then we export the 3D matrix in jit.matrix using matrixoutput message and attempt to draw it with a gl.sketch using gl_command drawmatrix.

The 3D object appears, but it is not smoothed. So we have search a gl_command to smooth it...

Does anybody know the way to smooth our 3D object with a sketch drawing a jit.matrix?

Using max 4.6.3, jitter 1.6.3 and 3DStudioMax 6 with plugin MaxToObj to build the 3D objects

Here is the patch, fellowed by the content of the Sphere.obj object.

# Max2Obj Version 6.0 Jul 29th, 2003
#
# object Sphere01 to come ...
#
v  0.000000 -41.231056 -0.000002
v  -0.000001 -33.356625 24.235006
v  -14.244982 -33.356625 19.606531
v  -23.048862 -33.356625 7.489026
v  -23.048862 -33.356625 -7.489033
v  -14.244978 -33.356625 -19.606537
v  0.000003 -33.356625 -24.235010
v  14.244984 -33.356625 -19.606533
v  23.048864 -33.356625 -7.489027
v  23.048861 -33.356625 7.489032
v  14.244976 -33.356625 19.606535
v  -0.000002 -12.741097 39.213066
v  -23.048864 -12.741096 31.724035
v  -37.293842 -12.741096 12.117500
v  -37.293842 -12.741095 -12.117508
v  -23.048859 -12.741095 -31.724039
v  0.000005 -12.741094 -39.213066
v  23.048866 -12.741095 -31.724033
v  37.293842 -12.741095 -12.117498
v  37.293839 -12.741096 12.117510
v  23.048855 -12.741096 31.724041
v  -0.000002 12.741097 39.213062
v  -23.048862 12.741098 31.724031
v  -37.293839 12.741098 12.117500
v  -37.293839 12.741100 -12.117505
v  -23.048857 12.741100 -31.724037
v  0.000005 12.741101 -39.213062
v  23.048864 12.741100 -31.724030
v  37.293842 12.741100 -12.117496
v  37.293835 12.741098 12.117511
v  23.048853 12.741098 31.724039
v  -0.000001 33.356628 24.235006
v  -14.244980 33.356628 19.606531
v  -23.048859 33.356628 7.489028
v  -23.048859 33.356628 -7.489029
v  -14.244976 33.356628 -19.606529
v  0.000003 33.356628 -24.235003
v  14.244981 33.356628 -19.606527
v  23.048861 33.356628 -7.489023
v  23.048857 33.356628 7.489034
v  14.244974 33.356628 19.606535
v  0.000000 41.231056 0.000002
# 42 vertices

vt  0.000000 1.000000 0.000000
vt  0.100000 1.000000 0.000000
vt  0.200000 1.000000 0.000000
vt  0.300000 1.000000 0.000000
vt  0.400000 1.000000 0.000000
vt  0.500000 1.000000 0.000000
vt  0.600000 1.000000 0.000000
vt  0.700000 1.000000 0.000000
vt  0.800000 1.000000 0.000000
vt  0.900000 1.000000 0.000000
vt  1.000000 1.000000 0.000000
vt  0.000000 0.800000 0.000000
vt  0.100000 0.800000 0.000000
vt  0.200000 0.800000 0.000000
vt  0.300000 0.800000 0.000000
vt  0.400000 0.800000 0.000000
vt  0.500000 0.800000 0.000000
vt  0.600000 0.800000 0.000000
vt  0.700000 0.800000 0.000000
vt  0.800000 0.800000 0.000000
vt  0.900000 0.800000 0.000000
vt  1.000000 0.800000 0.000000
vt  0.000000 0.600000 0.000000
vt  0.100000 0.600000 0.000000
vt  0.200000 0.600000 0.000000
vt  0.300000 0.600000 0.000000
vt  0.400000 0.600000 0.000000
vt  0.500000 0.600000 0.000000
vt  0.600000 0.600000 0.000000
vt  0.700000 0.600000 0.000000
vt  0.800000 0.600000 0.000000
vt  0.900000 0.600000 0.000000
vt  1.000000 0.600000 0.000000
vt  0.000000 0.400000 0.000000
vt  0.100000 0.400000 0.000000
vt  0.200000 0.400000 0.000000
vt  0.300000 0.400000 0.000000
vt  0.400000 0.400000 0.000000
vt  0.500000 0.400000 0.000000
vt  0.600000 0.400000 0.000000
vt  0.700000 0.400000 0.000000
vt  0.800000 0.400000 0.000000
vt  0.900000 0.400000 0.000000
vt  1.000000 0.400000 0.000000
vt  0.000000 0.200000 0.000000
vt  0.100000 0.200000 0.000000
vt  0.200000 0.200000 0.000000
vt  0.300000 0.200000 0.000000
vt  0.400000 0.200000 0.000000
vt  0.500000 0.200000 0.000000
vt  0.600000 0.200000 0.000000
vt  0.700000 0.200000 0.000000
vt  0.800000 0.200000 0.000000
vt  0.900000 0.200000 0.000000
vt  1.000000 0.200000 0.000000
vt  0.000000 0.000000 0.000000
vt  0.100000 0.000000 0.000000
vt  0.200000 0.000000 0.000000
vt  0.300000 0.000000 0.000000
vt  0.400000 0.000000 0.000000
vt  0.500000 0.000000 0.000000
vt  0.600000 0.000000 0.000000
vt  0.700000 0.000000 0.000000
vt  0.800000 0.000000 0.000000
vt  0.900000 0.000000 0.000000
vt  1.000000 0.000000 0.000000
# 66 texture vertices

vn  -0.000000 -1.000000 -0.000000
vn  -0.000000 -0.780444 0.625226
vn  -0.367499 -0.780444 0.505818
vn  -0.594625 -0.780444 0.193205
vn  -0.594625 -0.780444 -0.193205
vn  -0.367498 -0.780444 -0.505818
vn  0.000000 -0.780444 -0.625226
vn  0.367499 -0.780444 -0.505818
vn  0.594625 -0.780444 -0.193205
vn  0.594625 -0.780444 0.193205
vn  0.367498 -0.780444 0.505818
vn  -0.000000 -0.292481 0.956271
vn  -0.562082 -0.292481 0.773640
vn  -0.909468 -0.292481 0.295504
vn  -0.909468 -0.292481 -0.295504
vn  -0.562082 -0.292481 -0.773640
vn  0.000000 -0.292481 -0.956271
vn  0.562082 -0.292481 -0.773640
vn  0.909468 -0.292481 -0.295504
vn  0.909468 -0.292481 0.295504
vn  0.562082 -0.292481 0.773640
vn  -0.000000 0.292481 0.956271
vn  -0.562082 0.292481 0.773640
vn  -0.909468 0.292481 0.295504
vn  -0.909468 0.292481 -0.295504
vn  -0.562082 0.292481 -0.773640
vn  0.000000 0.292481 -0.956271
vn  0.562082 0.292481 -0.773640
vn  0.909468 0.292481 -0.295504
vn  0.909468 0.292481 0.295504
vn  0.562082 0.292481 0.773640
vn  -0.000000 0.780444 0.625226
vn  -0.367499 0.780444 0.505818
vn  -0.594625 0.780444 0.193205
vn  -0.594625 0.780444 -0.193205
vn  -0.367498 0.780444 -0.505818
vn  0.000000 0.780444 -0.625226
vn  0.367499 0.780444 -0.505818
vn  0.594625 0.780444 -0.193205
vn  0.594625 0.780444 0.193206
vn  0.367498 0.780444 0.505818
vn  -0.000000 1.000000 0.000000
# 42 vertex normals

g Sphere01
f 1/1/1 2/12/2 3/13/3
f 1/2/1 3/13/3 4/14/4
f 1/3/1 4/14/4 5/15/5
f 1/4/1 5/15/5 6/16/6
f 1/5/1 6/16/6 7/17/7
f 1/6/1 7/17/7 8/18/8
f 1/7/1 8/18/8 9/19/9
f 1/8/1 9/19/9 10/20/10
f 1/9/1 10/20/10 11/21/11
f 1/10/1 11/21/11 2/22/2
f 2/12/2 12/23/12 13/24/13
f 2/12/2 13/24/13 3/13/3
f 3/13/3 13/24/13 14/25/14
f 3/13/3 14/25/14 4/14/4
f 4/14/4 14/25/14 15/26/15
f 4/14/4 15/26/15 5/15/5
f 5/15/5 15/26/15 16/27/16
f 5/15/5 16/27/16 6/16/6
f 6/16/6 16/27/16 17/28/17
f 6/16/6 17/28/17 7/17/7
f 7/17/7 17/28/17 18/29/18
f 7/17/7 18/29/18 8/18/8
f 8/18/8 18/29/18 19/30/19
f 8/18/8 19/30/19 9/19/9
f 9/19/9 19/30/19 20/31/20
f 9/19/9 20/31/20 10/20/10
f 10/20/10 20/31/20 21/32/21
f 10/20/10 21/32/21 11/21/11
f 11/21/11 21/32/21 12/33/12
f 11/21/11 12/33/12 2/22/2
f 12/23/12 22/34/22 23/35/23
f 12/23/12 23/35/23 13/24/13
f 13/24/13 23/35/23 24/36/24
f 13/24/13 24/36/24 14/25/14
f 14/25/14 24/36/24 25/37/25
f 14/25/14 25/37/25 15/26/15
f 15/26/15 25/37/25 26/38/26
f 15/26/15 26/38/26 16/27/16
f 16/27/16 26/38/26 27/39/27
f 16/27/16 27/39/27 17/28/17
f 17/28/17 27/39/27 28/40/28
f 17/28/17 28/40/28 18/29/18
f 18/29/18 28/40/28 29/41/29
f 18/29/18 29/41/29 19/30/19
f 19/30/19 29/41/29 30/42/30
f 19/30/19 30/42/30 20/31/20
f 20/31/20 30/42/30 31/43/31
f 20/31/20 31/43/31 21/32/21
f 21/32/21 31/43/31 22/44/22
f 21/32/21 22/44/22 12/33/12
f 22/34/22 32/45/32 33/46/33
f 22/34/22 33/46/33 23/35/23
f 23/35/23 33/46/33 34/47/34
f 23/35/23 34/47/34 24/36/24
f 24/36/24 34/47/34 35/48/35
f 24/36/24 35/48/35 25/37/25
f 25/37/25 35/48/35 36/49/36
f 25/37/25 36/49/36 26/38/26
f 26/38/26 36/49/36 37/50/37
f 26/38/26 37/50/37 27/39/27
f 27/39/27 37/50/37 38/51/38
f 27/39/27 38/51/38 28/40/28
f 28/40/28 38/51/38 39/52/39
f 28/40/28 39/52/39 29/41/29
f 29/41/29 39/52/39 40/53/40
f 29/41/29 40/53/40 30/42/30
f 30/42/30 40/53/40 41/54/41
f 30/42/30 41/54/41 31/43/31
f 31/43/31 41/54/41 32/55/32
f 31/43/31 32/55/32 22/44/22
f 42/56/42 33/46/33 32/45/32
f 42/57/42 34/47/34 33/46/33
f 42/58/42 35/48/35 34/47/34
f 42/59/42 36/49/36 35/48/35
f 42/60/42 37/50/37 36/49/36
f 42/61/42 38/51/38 37/50/37
f 42/62/42 39/52/39 38/51/38
f 42/63/42 40/53/40 39/52/39
f 42/64/42 41/54/41 40/53/40
f 42/65/42 32/55/32 41/54/41
# 80 faces

smoothing-with-sketch-and-gl_commands

you can send a "fsaa 1" message to your jit.pwindow.

no supersampling for this grafic cards :-(

Full scene anti-aliasing flag (default = 0) When the flag is set, 3d graphics rendered into jit.window will use full scene antialiasing. Support for full scene anti-aliasing depends on your graphics card, current graphics card settings, and available VRAM. Please consult the documentation or technical specs for your graphics card for more information. By default, full scene anti-aliasing is turned off.

you can send a "fsaa 1" message to your jit.pwindow.
this should work on modern machines 
except for: macbooks, mac minis
no supersampling for this grafic cards :-( 

Full scene anti-aliasing flag (default = 0) When the flag is set, 3d graphics rendered into jit.window will use full scene antialiasing. Support for full scene anti-aliasing depends on your graphics card, current graphics card settings, and available VRAM. Please consult the documentation or technical specs for your graphics card for more information. By default, full scene anti-aliasing is turned off.


We use a Mac Pro with ATI 1900XT. So there is no problem.

We tryed to send fsaa message to 1 (and also 0 and again 1), but seems it doesn't work...

There is no change on the window... However the max window trace a "jit.gl.render: building GL on window" message...

Also, if you want super smooth surfaces, you can use a phong shader

which will interpolate your normals across the model surface. Phong

Also, if you want super smooth surfaces, you can use a phong shader
which will interpolate your normals across the model surface.  Phong
is a per-pixel shading model.
wes


May be our question need some more details.

What we are building is a big patch for performing art with 4 video projector witch are rebuilding a 3D world on stage (with actors, sensors...). All 4 images have to be synchronized with the same 3D univers looking at different camera angles.

The 3D univers we draw is made with several objects witch need each a different texture. It's not possible to use a gl.model, because we need for example to define a different position to each object.

We thaught it will be a good idea to do this with a gl.sketch using a gl_command like:

reset, glbindtexture txtA, drawmatrix objA, glbindtexture txtB, drawmatrix objB, glbindtexture txtC, drawmatrix objC, etc...

To get the matrix, we use a small patch witch load an object.obj with a gl.model (containing all the objects), and then output all the different matrices using drawgroup 1, then 2, then 3 etc... All this matrices are stored in a different jit.matrix witch is called by the gl.sketch.

Because we need 4 render spaces, we can change the state or coordinates of a single matrix, and get automaticaly the changes in all render (on all video projectors).

So we have got a single matrix by object, and a single render and a single sketch by video output.

It works well... but the only problem is now to smooth the objects...

I try to use the phong shader. The window look like different with the shader enabled or disabled. But the smooth is not good.

I put a jit.op @op pass pass pass pass pass * * * between the matrixoutput of the gl.model and the jit.matrix storing the object. If I change the multiplicator of normal vector, the image result doesn't change... so it seems that gl.sketch doesn't care of normal vectors...

I mean there is a gl_command witch ask the gl.sketch to considere the normal vectors, and also one to smooth theym... but I don't know witch one.

> I try to use the phong shader. The window look like different with the shader enabled or disabled. But the smooth is not good.

I have no idea what you mean by the window looking different, but I

guarantee that if you're doing things correctly, a phong shader will

give you a smooth look. If it's not smooth, then your normals are way

>  I try to use the phong shader. The window look like different with the shader enabled or disabled. But the smooth is not good.

I have no idea what you mean by the window looking different, but I
guarantee that if you're doing things correctly, a phong shader will
give you a smooth look.  If it's not smooth, then your normals are way
wrong or something else is out of whack.

take a look. it's best to be flexible with max in general...

Smoothing with sketch and gl_commands