make error about sltk

[prahjister]

BTW thank you for the time you r spending

[prahjister]

yes moving flags+gl to the end worked.

[prahjister]

i believe i need sldisp to have a gui to work

[prahjister]

I would like to run all apps on one box
preferable through an ssh session and or remote desktop app

[prahjister]

Can I run slcontrol on Windows box and everything else on other. Then use a putty session to start and stop everything.

[prahjister]

I see that you are making some changes so i started over and getting this now.
I just noticed that you made some changes so i checked it out.
With the current changes I get this
FYI I am testing in windows subsystem for linux as well and get the same error. It is promising that it will work.

g++ -c -o util.o util.cpp
util.cpp: In function ‘bool file_exists(const char*)’:
util.cpp:35:37: error: ‘fopen’ was not declared in this scope
FILE file = fopen(filename, "r");
^
util.cpp:38:20: error: ‘fclose’ was not declared in this scope
fclose(file);
^
util.cpp: In function ‘std::__cxx11::string get_pattern_filename(std::__cxx11::string)’:
util.cpp:48:36: error: ‘sprintf’ was not declared in this scope
sprintf(buf,pattern.c_str(),num);
^
util.cpp: In function ‘char findNextName(const char*, int*)’:
util.cpp:58:47: error: ‘calloc’ was not declared in this scope
char* buf = (char*)calloc(100,sizeof(char));
^
util.cpp:59:27: error: ‘sprintf’ was not declared in this scope
sprintf(buf,pattern,*n);
^
util.cpp: In function ‘bool getExifMap(std::__cxx11::string, exifmap&)’:
util.cpp:147:78: error: ‘sprintf’ was not declared in this scope
sprintf( command, "/usr/local/bin/exiftool -s -G1 %s 2>&1", fname.c_str() );
^
util.cpp:148:27: error: ‘popen’ was not declared in this scope
fp = popen(command, "r");
^
util.cpp:151:16: error: ‘stderr’ was not declared in this scope
fprintf( stderr, "Failed to run command" );
^
util.cpp:151:48: error: ‘fprintf’ was not declared in this scope
fprintf( stderr, "Failed to run command" );
^
util.cpp:161:39: error: ‘fgets’ was not declared in this scope
while( fgets(sbuf, sizeof(sbuf), fp) != NULL )
^
util.cpp:165:43: error: ‘strncmp’ was not declared in this scope
if(strncmp( sbuf,fnf, sizeof(fnf)-1 )==0){
^
util.cpp:167:19: error: ‘stderr’ was not declared in this scope
fprintf( stderr, "bad filename: %s\n", fname.c_str() );
^
util.cpp:167:63: error: ‘fprintf’ was not declared in this scope
fprintf( stderr, "bad filename: %s\n", fname.c_str() );
^
util.cpp:168:19: error: ‘pclose’ was not declared in this scope
pclose(fp);
^
util.cpp:176:57: error: ‘sscanf’ was not declared in this scope
sscanf(sbuf,"[%[^]]] %s : %[^\n]\n",cbuf,kbuf,vbuf);
^
util.cpp:197:13: error: ‘pclose’ was not declared in this scope
pclose(fp);
^
util.cpp: In function ‘bool getExifList(std::vector<std::__cxx11::basic_string >&, std::vector<std::map<std::__cxx11::basic_string, std::__cxx11::basic_string > >&)’:
util.cpp:216:87: error: ‘printf’ was not declared in this scope
rintf("(%d chars) list: [%s]\n",(int)concat_list.length(),concat_list.c_str());
^
util.cpp:222:81: error: ‘sprintf’ was not declared in this scope
sprintf( command, "/usr/local/bin/exiftool -s %s 2>&1", concat_list.c_str() );
^
util.cpp:224:34: error: ‘printf’ was not declared in this scope
printf( "$%s\n", command );
^
util.cpp:225:28: error: ‘popen’ was not declared in this scope
fp = popen(command, "r");
^
util.cpp:239:40: error: ‘fgets’ was not declared in this scope
while( fgets(sbuf, sizeof(sbuf), fp) != NULL )
^
util.cpp:243:46: error: ‘strncmp’ was not declared in this scope
if(strncmp( sbuf, fnf, sizeof(fnf)-1 )==0){
^
util.cpp:244:22: error: ‘stderr’ was not declared in this scope
fprintf( stderr, "file for exif data not found\n" );
^
util.cpp:244:63: error: ‘fprintf’ was not declared in this scope
fprintf( stderr, "file for exif data not found\n" );
^
util.cpp:245:22: error: ‘pclose’ was not declared in this scope
pclose(fp);
^
util.cpp:255:53: error: ‘strncmp’ was not declared in this scope
if(strncmp( sbuf,fhead, sizeof(fhead)-1 )==0){
^
util.cpp:256:53: error: ‘sscanf’ was not declared in this scope
sscanf(sbuf,"======== %[^\n]\n",fbuf);
^
util.cpp:264:63: error: ‘sscanf’ was not declared in this scope
} else if(sscanf(sbuf,"%d image files read",&total)==1){
^
util.cpp:266:41: error: ‘printf’ was not declared in this scope
printf("end found\n");
^
util.cpp:278:50: error: ‘sscanf’ was not declared in this scope
sscanf(sbuf,"%s : %[^\n]\n",kbuf,vbuf);
^
util.cpp:285:14: error: ‘pclose’ was not declared in this scope
pclose(fp);
^
util.cpp:288:54: error: ‘printf’ was not declared in this scope
printf("[%d maps parsed]\n", (int)maps.size());
^
util.cpp: In function ‘exifstub parseExifMap(exifmap)’:
util.cpp:317:48: error: ‘sscanf’ was not declared in this scope
if( sscanf(ImageWidth.c_str(),"%d",&img_w) != 1 ){
^
util.cpp:320:49: error: ‘sscanf’ was not declared in this scope
if( sscanf(ImageHeight.c_str(),"%d",&img_h) != 1 ){
^
util.cpp:360:52: error: ‘sscanf’ was not declared in this scope
if( sscanf(ExifImageWidth.c_str(),"%d",&img_w) != 1 ){
^
util.cpp:363:53: error: ‘sscanf’ was not declared in this scope
if( sscanf(ExifImageHeight.c_str(),"%d",&img_h) != 1 ){
^
util.cpp:376:61: error: ‘sscanf’ was not declared in this scope
int res = sscanf(ExposureTime.c_str(),"%f/%f",&a,&b);
^
util.cpp:389:44: error: ‘sscanf’ was not declared in this scope
if( sscanf(FNumber.c_str(),"%f",&fnum) != 1 ){
^
util.cpp:396:39: error: ‘sscanf’ was not declared in this scope
if( sscanf(ISO.c_str(),"%d",&iso) != 1 ){
^
util.cpp:403:46: error: ‘sscanf’ was not declared in this scope
if( sscanf(FocalLength.c_str(),"%f",&fl) != 1 ){
^
util.cpp:460:60: error: ‘sscanf’ was not declared in this scope
if( sscanf(ScaleFactor35efl.c_str(),"%f",&crop_factor) != 1 ){
^
util.cpp:467:54: error: ‘sscanf’ was not declared in this scope
if( sscanf(HyperfocalDistance.c_str(),"%f",&hfd) != 1 ){
^
util.cpp:474:43: error: ‘sscanf’ was not declared in this scope
if( sscanf(FOV.c_str(),"%f deg",&fov) != 1 ){
^
util.cpp:481:45: error: ‘sscanf’ was not declared in this scope
if( sscanf(LightValue.c_str(),"%f",&lv) != 1 ){
^
util.cpp: In function ‘void printStub(exifstub)’:
util.cpp:525:53: error: ‘printf’ was not declared in this scope
printf("%s : %s\n",s.make.c_str(),s.model.c_str());
^
util.cpp: In function ‘bool getExif(std::__cxx11::string, stringmap&)’:
util.cpp:544:75: error: ‘sprintf’ was not declared in this scope
sprintf( command, "/usr/local/bin/exiftool -s %s 2>&1", fname.c_str() );
^
util.cpp:545:28: error: ‘popen’ was not declared in this scope
fp = popen(command, "r");
^
util.cpp:548:18: error: ‘stderr’ was not declared in this scope
fprintf( stderr, "Failed to run command" );
^
util.cpp:548:50: error: ‘fprintf’ was not declared in this scope
fprintf( stderr, "Failed to run command" );
^
util.cpp:557:40: error: ‘fgets’ was not declared in this scope
while( fgets(sbuf, sizeof(sbuf), fp) != NULL )
^
util.cpp:561:45: error: ‘strncmp’ was not declared in this scope
if(strncmp( sbuf,fnf, sizeof(fnf)-1 )==0){
^
util.cpp:563:22: error: ‘stderr’ was not declared in this scope
fprintf( stderr, "bad filename: %s\n", fname.c_str() );
^
util.cpp:563:66: error: ‘fprintf’ was not declared in this scope
fprintf( stderr, "bad filename: %s\n", fname.c_str() );
^
util.cpp:564:22: error: ‘pclose’ was not declared in this scope
pclose(fp);
^
util.cpp:569:46: error: ‘sscanf’ was not declared in this scope
sscanf(sbuf,"%s : %[^\n]\n",kbuf,vbuf);
^
util.cpp:575:14: error: ‘pclose’ was not declared in this scope
pclose(fp);
^
Makefile:98: recipe for target 'util.o' failed
make: *** [util.o] Error 1

[jhdewitt]

Hello please try latest version of repo; the three recent commits fix different stuff. And the util.ccp errors. Thank!

[prahjister]

Both give this
g++ -c -o util.o util.cpp
g++ -lstdc++ -lGL -lGLU -lglut sdl2-config --static-libs --cflags pkg-config --libs --cflags liblo sldisp.cpp util.cpp -o bin/sldisp
/bin/sh: 1: sdl2-config: not found
/bin/sh: 1: pkg-config: not found
sldisp.cpp:11:19: fatal error: lo/lo.h: No such file or directory
compilation terminated.
Makefile:64: recipe for target 'sldisp' failed
make: *** [sldisp] Error 1

[jhdewitt]

Aha, sorry I really need to write up a comprehensive install guide for linux..

These errors indicate you do not have SDL2, pkg-config, or liblo (OSC communication).

Please try these commands to get the libraries. Sorry for so many hangups in compilation.
sudo apt-get install pkg-config
sudo apt-get install libsdl2-dev
sudo apt-get install liblo-dev

If you wish to run the processing programs on raspi as well you will need to install opencv which I don't know of a oneliner to install. slcrunch and slcalibrate both need opencv. Removing those two from the makefile until opencv is installed might be good.

[prahjister]

getting further now
I installed these
sudo apt install pkg-config libsdl2-dev liblo-dev python-opencv freeglut3-dev

But now i just removed opencv and using this script to install

https://milq.github.io/install-opencv-ubuntu-debian/

I don't think it is opencv related and I found some reference to the linking and linking order during searching sdl error but I don't know how to correct..I am sorry this is above my paygrade

I am keeping my notes and will pass along in the end. opencv is compiling now.

Looks like this will take a while....will come back tomorrow night

g++ -c -o util.o util.cpp
g++ -lstdc++ -lGL -lGLU -lglut sdl2-config --static-libs --cflags pkg-config --libs --cflags liblo sldisp.cpp util.cpp -o bin/sldisp
/tmp/ccO0ZMZQ.o: In function logSDLError(std::ostream&, std::__cxx11::basic_str ing<char, std::char_traits<char>, std::allocator<char> > const&)': sldisp.cpp:(.text+0x26c): undefined reference to SDL_GetError'
/tmp/ccO0ZMZQ.o: In function gen_graycode(SDL_Surface*, std::vector<unsigned in t, std::allocator<unsigned int> >&, bool, int, int, float, float, float)': sldisp.cpp:(.text+0x380): undefined reference to SDL_LockSurface'
sldisp.cpp:(.text+0x5bc): undefined reference to SDL_UnlockSurface' /tmp/ccO0ZMZQ.o: In function gen_sine(SDL_Surface*, int, float, float, float, f loat, float)':
sldisp.cpp:(.text+0x620): undefined reference to SDL_LockSurface' sldisp.cpp:(.text+0x878): undefined reference to SDL_UnlockSurface'
/tmp/ccO0ZMZQ.o: In function gen_rgb(SDL_Surface*, float, float, float)': sldisp.cpp:(.text+0x8dc): undefined reference to SDL_LockSurface'
sldisp.cpp:(.text+0xa58): undefined reference to SDL_UnlockSurface' /tmp/ccO0ZMZQ.o: In function configure_SDL(CLIENT_STATE*)':
sldisp.cpp:(.text+0xaa0): undefined reference to SDL_Init' sldisp.cpp:(.text+0xb08): undefined reference to SDL_GetCurrentDisplayMode'
sldisp.cpp:(.text+0xb38): undefined reference to SDL_GetError' sldisp.cpp:(.text+0xbf8): undefined reference to SDL_CreateWindow'
sldisp.cpp:(.text+0xc4c): undefined reference to SDL_CreateRGBSurface' sldisp.cpp:(.text+0xc64): undefined reference to SDL_GetWindowSurface'
sldisp.cpp:(.text+0xcd8): undefined reference to SDL_CreateRenderer' sldisp.cpp:(.text+0xd44): undefined reference to SDL_GL_CreateContext'
/tmp/ccO0ZMZQ.o: In function configure_GL(CLIENT_STATE*)': sldisp.cpp:(.text+0xe04): undefined reference to SDL_GL_SetSwapInterval'
sldisp.cpp:(.text+0xe18): undefined reference to glClearColor' sldisp.cpp:(.text+0xe20): undefined reference to glMatrixMode'
sldisp.cpp:(.text+0xe24): undefined reference to glLoadIdentity' sldisp.cpp:(.text+0xe2c): undefined reference to glEnable'
sldisp.cpp:(.text+0xe40): undefined reference to glGenTextures' sldisp.cpp:(.text+0xe54): undefined reference to glBindTexture'
sldisp.cpp:(.text+0xe64): undefined reference to glTexParameteri' sldisp.cpp:(.text+0xe74): undefined reference to glTexParameteri'
/tmp/ccO0ZMZQ.o: In function draw_pattern(SDL_Window*)': sldisp.cpp:(.text+0xeb8): undefined reference to SDL_GetWindowSize'
sldisp.cpp:(.text+0xec0): undefined reference to glClear' sldisp.cpp:(.text+0xedc): undefined reference to glViewport'
sldisp.cpp:(.text+0xee4): undefined reference to glMatrixMode' sldisp.cpp:(.text+0xee8): undefined reference to glLoadIdentity'
sldisp.cpp:(.text+0xef0): undefined reference to glMatrixMode' sldisp.cpp:(.text+0xef4): undefined reference to glLoadIdentity'
sldisp.cpp:(.text+0xf20): undefined reference to glOrtho' sldisp.cpp:(.text+0xf28): undefined reference to glBegin'
sldisp.cpp:(.text+0xf34): undefined reference to glTexCoord2i' sldisp.cpp:(.text+0xf44): undefined reference to glVertex3f'
sldisp.cpp:(.text+0xf50): undefined reference to glTexCoord2i' sldisp.cpp:(.text+0xf64): undefined reference to glVertex3f'
sldisp.cpp:(.text+0xf70): undefined reference to glTexCoord2i' sldisp.cpp:(.text+0xf88): undefined reference to glVertex3f'
sldisp.cpp:(.text+0xf94): undefined reference to glTexCoord2i' sldisp.cpp:(.text+0xfac): undefined reference to glVertex3f'
sldisp.cpp:(.text+0xfb0): undefined reference to glEnd' sldisp.cpp:(.text+0xfb8): undefined reference to SDL_UpdateWindowSurface'
/tmp/ccO0ZMZQ.o: In function main': sldisp.cpp:(.text+0x103c): undefined reference to lo_server_thread_new'
sldisp.cpp:(.text+0x1060): undefined reference to lo_server_thread_add_method' sldisp.cpp:(.text+0x1090): undefined reference to lo_server_thread_add_method'
sldisp.cpp:(.text+0x10c0): undefined reference to lo_server_thread_add_method' sldisp.cpp:(.text+0x10f0): undefined reference to lo_server_thread_add_method'
sldisp.cpp:(.text+0x1120): undefined reference to lo_server_thread_add_method' /tmp/ccO0ZMZQ.o:sldisp.cpp:(.text+0x1150): more undefined references to lo_serv er_thread_add_method' follow
/tmp/ccO0ZMZQ.o: In function main': sldisp.cpp:(.text+0x1158): undefined reference to lo_server_thread_start'
sldisp.cpp:(.text+0x116c): undefined reference to lo_address_new' sldisp.cpp:(.text+0x11c8): undefined reference to lo_address_errno'
sldisp.cpp:(.text+0x11d4): undefined reference to lo_address_errstr' sldisp.cpp:(.text+0x122c): undefined reference to SDL_ShowCursor'
sldisp.cpp:(.text+0x1234): undefined reference to SDL_PollEvent' sldisp.cpp:(.text+0x12e4): undefined reference to SDL_GetWindowDisplayIndex'
sldisp.cpp:(.text+0x1308): undefined reference to SDL_GetDisplayBounds' sldisp.cpp:(.text+0x1344): undefined reference to SDL_SetWindowFullscreen'
sldisp.cpp:(.text+0x134c): undefined reference to SDL_ShowCursor' sldisp.cpp:(.text+0x136c): undefined reference to SDL_SetWindowFullscreen'
sldisp.cpp:(.text+0x1374): undefined reference to SDL_ShowCursor' sldisp.cpp:(.text+0x1384): undefined reference to SDL_SetWindowBordered'
sldisp.cpp:(.text+0x13a4): undefined reference to SDL_GetWindowSize' sldisp.cpp:(.text+0x13c8): undefined reference to SDL_SetWindowSize'
sldisp.cpp:(.text+0x1410): undefined reference to SDL_GetWindowDisplayIndex' sldisp.cpp:(.text+0x1424): undefined reference to SDL_GetDisplayBounds'
sldisp.cpp:(.text+0x1454): undefined reference to SDL_GetWindowSize' sldisp.cpp:(.text+0x1718): undefined reference to glBindTexture'
sldisp.cpp:(.text+0x1764): undefined reference to glTexImage2D' sldisp.cpp:(.text+0x17cc): undefined reference to SDL_UpperBlit'
sldisp.cpp:(.text+0x17d8): undefined reference to SDL_RenderPresent' sldisp.cpp:(.text+0x17f0): undefined reference to SDL_DestroyRenderer'
sldisp.cpp:(.text+0x17fc): undefined reference to SDL_DestroyWindow' sldisp.cpp:(.text+0x1800): undefined reference to SDL_Quit'
sldisp.cpp:(.text+0x1808): undefined reference to lo_server_thread_free' /tmp/ccO0ZMZQ.o: In function generic_handler(char const*, char const*, lo_arg** , int, void*, void*)':
sldisp.cpp:(.text+0x192c): undefined reference to lo_arg_pp' /tmp/ccO0ZMZQ.o: In function send_display_info(void*, int, int)':
sldisp.cpp:(.text+0x2014): undefined reference to lo_send_internal' /tmp/ccO0ZMZQ.o: In function send_pattern_status(void*, int, int, int, float, f loat, float)':
sldisp.cpp:(.text+0x20d0): undefined reference to lo_send_internal' /tmp/ccO0ZMZQ.o: In function send_pattern_state(void*, int, float, float, float , float, float, float, float)':
sldisp.cpp:(.text+0x21a4): undefined reference to lo_send_internal' /tmp/ccO0ZMZQ.o: In function send_heartbeat(void*)':
sldisp.cpp:(.text+0x2214): undefined reference to `lo_send_internal'
collect2: error: ld returned 1 exit status
Makefile:64: recipe for target 'sldisp' failed
make: *** [sldisp] Error 1

[jhdewitt]

Hello looks like a mucky situation for now. It seems that neither SDL2 or liblo headers/library are being properly found after installation. Blech.

I will try to get sltk building on a fresh raspbian install and document steps. Not sure what if any important differences there are with armbian flavor. This is honestly the first time I've seriously considered building every single program on rpi (originally just intended to run sldisp for output and mjpg-streamer for input with slturn for turntable, these are all rather light programs). My preferred setup has been to have those three run on raspi and then do all heavy lifting on a "desktop class" computer.

Anyways, compiling opencv from source on raspberry pi can be a painfully long process. Will update in a day or two with findings on fresh build instructions.

edit: thanks a lot for the opencv install link; i use homebrew on macos so my apt-get-fu is a bit weak.

[prahjister]

i am getting the same error in wsl. These are both based on ubuntu 16.04. May want to fire up a virtual machine with 16.04 and test that way to save some time

how can i test this
https://stackoverflow.com/questions/17386032/sdl2-wont-link-properly
and
https://stackoverflow.com/questions/33192991/undefined-reference-to-sdl2-functions-in-linked-library-codeblocks
and
https://stackoverflow.com/questions/33192991/undefined-reference-to-sdl2-functions-in-linked-library-codeblocks

or maybe

https://ubuntuforums.org/archive/index.php/t-1081422.html

or is this not an issue

[jhdewitt]

can you please paste the result of
sdl2-config --static-libs --cflags
and
pkg-config --libs --cflags liblo

thank

these are the results on my arm box

$sdl2-config --static-libs --cflags

-L/usr/lib/arm-linux-gnueabihf -lSDL2 -lpthread -Wl,--no-undefined -lm -ldl -lasound -lm -ldl -lpthread -lpulse-simple -lpulse -lX11 -lXext -lXcursor -lXinerama -lXi -lXrandr -lXss -lXxf86vm -lwayland-egl -lwayland-client -lwayland-cursor -lxkbcommon -lpthread -lrt -I/usr/include/SDL2 -D_REENTRANT

$pkg-config --cflags --libs sdl2

-D_REENTRANT -I/usr/include/SDL2 -lSDL2

$pkg-config --libs --cflags liblo

-llo -lpthread

[prahjister]

cnx@amlogicocto:~$ sdl2-config --static-libs --cflags
-L/usr/lib/aarch64-linux-gnu -lSDL2 -Wl,--no-undefined -lm -ldl -lasound -lm -ldl -lpthread -lpulse-simple -lpulse -lsndio -lX11 -lXext -lXcursor -lXinerama -lXi -lXrandr -lXss -lXxf86vm -lwayland-egl -lwayland-client -lwayland-cursor -lxkbcommon -lpthread -lrt
-I/usr/include/SDL2 -D_REENTRANT
cnx@amlogicocto:~$ pkg-config --libs --cflags liblo
-llo -lpthread
cnx@amlogicocto:~$

i was just looking at https://wiki.libsdl.org/Installation

[prahjister]

what do these differences mean?

[jhdewitt]

Hello thank you for the output. The only difference I see between our output is:
-L/usr/lib/aarch64-linux-gnu vs -L/usr/lib/arm-linux-gnueabihf (mine)
and
-lsndio vs [x] (not present in mine)

I take it this means the library was installed in a different directory, but this shouldn't matter as long as it's passed in. I am not sure why you are seeing those errors in conjunction with that sdl2-config output. This SO post seems promising: https://stackoverflow.com/a/18182369 . I updated Makefile to reflect that answer's suggestion. Perhaps it might fix the errors you are seeing.

Here is a rough draft of a start-to-finish compilation guide (not yet tested):

https://github.com/jhdewitt/sltk/wiki/Compilation-Guide

[prahjister]

Spectrum has stopped my progress for the night. I think they are doing work in the area. Seems to go out at midnight every night for the past couple weeks. I have no choice but to stop. Ohh make clean doesn't seem to work and get an error. I think this is how to start over testing changes

[jhdewitt]

Thanks. Sharing software doesn't do much good if it can't be used/reproduced on other peoples' machines, so cheers for participating in testing.

[prahjister]

I think it will be worth it. It will help bring this technology down to a reasonable price point.

On a side note I saw some of your scans using photogrammetry. Which gets better scans? Photogrammetry or structured light? Are there any free desktop apps ? All I found r cloud based. I am wanting to test both versions out.

[jhdewitt]

:)

Agisoft photoscan (has a trial mode, is desktop app) is the program I use most for photogrammetry, recommend trying. Generally I find that structured light results in more detailed/rich geometry because camera+projector=direct binary code matches vs optimized feature "guess" matching. Textures are basically same because source image is same if that makes sense.

Recently began trying out realitycapture (desktop app) but their subscription model is not appealing to me despite some perks vs photoscan (some parts of processing seem faster).

[prahjister]

Morning...i started over and I get this error now

g++ -c -o sl_util.o sl_util.cpp
sl_util.cpp: In function ‘void printbin(int)’:
sl_util.cpp:31:15: error: ‘printf’ was not declared in this scope
printf("[");
^
Makefile:104: recipe for target 'sl_util.o' failed
make: *** [sl_util.o] Error 1

[prahjister]

i added #include <stdio.h> to sl_util.cpp to get past this error

now getting back cv error

[prahjister]

after reordering the remaining similar to this I was able to compile all except plyalign, plytrim, plymerge

$(CC) chessgen.cpp util.cpp -o bin/chessgen $(CFLAGS) $(CLIB) $(FLAGS_OPENCV)

I am getting pcl error on these. I am compiling pcl now

[jhdewitt]

I was able to compile all except plyalign, plytrim, plymerge

Oh wow, exciting news! PCL is even fatter than OpenCV, and is only linked in ply* programs (plyalign,trim,merge). These represent the least developed part of the project.

I have to admit, the makefile stuff for including PCL is pretty janky. Documentation on the most recent version only has info for CMakeFiles.txt. Not sure how to add CMakeFiles.txt and integrate that into the Makefile just for those three programs.

now getting back cv error

Can has cv error if it's still happening?

i added #include <stdio.h> to sl_util.cpp to get past this error

Fixed, oops I had the include on local but repo wasn't up to date.
d25cda6

[prahjister]

Here is the makefile i have been using. Mostly working

Makefile.zip

[prahjister]

sorry i didnt refresh my browser only error now if ply is experimental is this is with above makefile

g++      slcrunch.cpp util.cpp sl_util.cpp -o bin/slcrunch  -lstdc++     `pkg-config --libs --cflags opencv`
/tmp/ccFG6E85.o: In function `parseStringList(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&)':
slcrunch.cpp:(.text+0x5dc): undefined reference to `is_dir(char const*)'
/tmp/ccFG6E85.o: In function `main':
slcrunch.cpp:(.text+0x35a8): undefined reference to `is_dir(char const*)'
collect2: error: ld returned 1 exit status
Makefile:69: recipe for target 'slcrunch' failed
make: *** [slcrunch] Error 1

[prahjister]

can you use older pcl 1.7.2

[prahjister]

I will be back in about 4 hours Family Time

[jhdewitt]

g++ slcrunch.cpp util.cpp sl_util.cpp -o bin/slcrunch -lstdc++ pkg-config --libs --cflags opencv
/tmp/ccFG6E85.o: In function parseStringList(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&)': slcrunch.cpp:(.text+0x5dc): undefined reference to is_dir(char const*)'

This error should be fixed now 6fcbcd1 (shortsighted ifdef)

Will update Makefile later today.

can you use older pcl 1.7.2

Yes good idea will try building ply* with older PCL version today and change software setup accordingly if goes well.

[prahjister]

i updated then used the makefile with no ply* and we have success This is on S905x box. Trying Ubuntu on Windows 10

cnx@amlogicocto:~/sltk-master$ make
g++      -c -o util.o util.cpp
g++      -c -o sl_util.o sl_util.cpp
g++      slcrunch.cpp util.cpp sl_util.cpp -o bin/slcrunch  -lstdc++     `pkg-config --libs --cflags opencv`
g++      slcalibrate.cpp util.cpp -o bin/slcalibrate  -lstdc++   `pkg-config --libs --cflags opencv`
g++      plotlens.cpp util.cpp sl_util.cpp -o bin/plotlens  -lstdc++     `pkg-config --libs --cflags opencv`
g++      chessgen.cpp util.cpp -o bin/chessgen  -lstdc++         `pkg-config --libs --cflags opencv`
g++      chessfind.cpp util.cpp -o bin/chessfind  -lstdc++       `pkg-config --libs --cflags opencv`
g++      listcreator.cpp -o bin/listcreator  -lstdc++    `pkg-config --libs --cflags opencv`
cnx@amlogicocto:~/sltk-master$

[prahjister]

lol i dont think it worked i think first 2 failed

[jhdewitt]

Oh boy!

Do they compile but produce errors upon running?

[prahjister]

i dont have any output in the bin folder

[prahjister]

cnx@amlogicocto:~/sltk-master$ make sldisp
g++ -lstdc++ -lGL -lGLU -lglut sldisp.cpp util.cpp -o bin/sldisp sdl2-config --static-libs --cflags pkg-config --libs --cflags liblo
/tmp/ccgTujHZ.o: In function configure_GL(CLIENT_STATE*)': sldisp.cpp:(.text+0xe18): undefined reference to glClearColor'
sldisp.cpp:(.text+0xe20): undefined reference to glMatrixMode' sldisp.cpp:(.text+0xe24): undefined reference to glLoadIdentity'
sldisp.cpp:(.text+0xe2c): undefined reference to glEnable' sldisp.cpp:(.text+0xe40): undefined reference to glGenTextures'
sldisp.cpp:(.text+0xe54): undefined reference to glBindTexture' sldisp.cpp:(.text+0xe64): undefined reference to glTexParameteri'
sldisp.cpp:(.text+0xe74): undefined reference to glTexParameteri' /tmp/ccgTujHZ.o: In function draw_pattern(SDL_Window*)':
sldisp.cpp:(.text+0xec0): undefined reference to glClear' sldisp.cpp:(.text+0xedc): undefined reference to glViewport'
sldisp.cpp:(.text+0xee4): undefined reference to glMatrixMode' sldisp.cpp:(.text+0xee8): undefined reference to glLoadIdentity'
sldisp.cpp:(.text+0xef0): undefined reference to glMatrixMode' sldisp.cpp:(.text+0xef4): undefined reference to glLoadIdentity'
sldisp.cpp:(.text+0xf20): undefined reference to glOrtho' sldisp.cpp:(.text+0xf28): undefined reference to glBegin'
sldisp.cpp:(.text+0xf34): undefined reference to glTexCoord2i' sldisp.cpp:(.text+0xf44): undefined reference to glVertex3f'
sldisp.cpp:(.text+0xf50): undefined reference to glTexCoord2i' sldisp.cpp:(.text+0xf64): undefined reference to glVertex3f'
sldisp.cpp:(.text+0xf70): undefined reference to glTexCoord2i' sldisp.cpp:(.text+0xf88): undefined reference to glVertex3f'
sldisp.cpp:(.text+0xf94): undefined reference to glTexCoord2i' sldisp.cpp:(.text+0xfac): undefined reference to glVertex3f'
sldisp.cpp:(.text+0xfb0): undefined reference to glEnd' /tmp/ccgTujHZ.o: In function main':
sldisp.cpp:(.text+0x1718): undefined reference to glBindTexture' sldisp.cpp:(.text+0x1764): undefined reference to glTexImage2D'
collect2: error: ld returned 1 exit status
Makefile:67: recipe for target 'sldisp' failed
make: *** [sldisp] Error 1

[prahjister]

before we go any further....can these be launched from the command line or do i need a gui?

[jhdewitt]

Aha, all the tools in this repo are command line runnables. That said, there are some visual things. I keep a bookmark to mjpg-streamer so I can get the focus and framing right.

Control of slcapture.py is done by OSC packets which are generated for now by a Processing Sketch called slcontrol which I just added to the repo.

Updated Compliation Guide with screenshot and info about copying the GUI program.

Here's what the interface looks like:
https://raw.githubusercontent.com/jhdewitt/sltk/master/img/slcontrol_gui_simple.png

To capture data, I configure the IP endpoints in the code and do the following:

• Run sldisp on the computer connected to the projector
• Run mjpg-streamer on the computer connected to the camera
• Run slcapture.py on the computer that will store the generated image batch directories
• Run slcontrol on the computer that you want to control the entire capture process from
• Press START_CAPTURE after optionally entering a scan sequence name, and configuring how many rotations/degrees per rotation (obviously this won't work for now because turntable communication is unstandardized)

The progress bars in the interface should show the progress of the scan sequence to help with moments of impatience, since it can take a while (something I hear is common with 3d printing)

[jhdewitt]

Regarding the OpenGL related linking/undefined reference errors: this post seems promising.

As per the thread, maybe try moving $(FLAGS_GL) to the end of the Makefile line for sldisp

[prahjister]

ok i am flashing a new img...didnt realize we needed a gui

[jhdewitt]

Would you have any interest in a (hypothtical, not yet written) command line tool to kick off a scan?

For now, slcontrol is the only turnkey convenient way to generate the OSC packets that slcapture.py uses to decide when to begin triggering the projector/camera.

[prahjister]

i only have to run that one command?

[prahjister]

where is slcontrol i dont see it in the bin or makefile

[jhdewitt]

Hi sorry I haven't written such a command line program yet, just was wondering if a GUI is inconvenient for your use case (e.g. triggering at end of print?). Right now slcontrol is a Processing sketch GUI, not a command line program.

All the programs mentioned in Data Capture How-to are needed to get it working

[prahjister]

you will really need to dumb this down for me to get this to work lol

[jhdewitt]

Ahhh right yes sorry I conflated some stuff. I'm trying to iron out what details are important to mention in guides so I can put them into the wiki.

sldisp does require gui because it's meant to run as a fullscreen program

[jhdewitt]

Data Capture How-to This guide. Trying to centralize stuff because long threads are easy to get lost in for me.

I think a source of confusion here might be the way I use the programs in my setup. For me, there's two computers: laptop and raspi

laptop runs:

• slcapture.py
• slcontrol
• slcrunch
• slcalibrate

raspi runs:

• sldisp (projector output)
• mjpg-streamer (camera intput)

Raspi runs continuously, and I can come and go with laptop as please. When on same LAN as raspi, I run slcapture.py and open slcontrol, then click START_CAPTURE in the gui to begin capturing data. If only one scan is desired, the GUI can be safely closed before the sequence finishes.

In your case, it sounds like you're trying to run all the software on the raspberry pi. Is this accurate? I absolutely want to support that use case (all programs on raspi).

[prahjister]

if it is not one thing its another. mjpeg streamer installing working not on this img i downloaded. I think i have to update opencv

[prahjister]

How do you start slcontrol? What is it?

[jhdewitt]

how to start slcontrol

It is a *.pde file for https://processing.org/ which is based on Java. To run it, download from https://processing.org/download/ and move https://github.com/jhdewitt/sltk/tree/master/slcontrol to your Processing folder in home/documents folder then double click and run. Usually ~/Documents/Processing

As a reminder IP address endpoint config is hardcoded so this likely must be all changed to 127.0.0.1.

what is it?

slcontrol is a control GUI only; no logic happens there and no processing at all, just a friendly user interface to craft a single OSC packet. It sends an OSC packet to slcapture.py specifying what type of structured light pattern is desired and how many turns/degrees per turn and slcapture.py handles the rest. So just buttons and sliders and remote procedure call that kicks everything off.

[jhdewitt]

Yes, that should work and is my preferred style of use.

Perhaps to demystify this program, the critical function slcontrol serves is this snippet:

OscMessage startMessage = new OscMessage("/start_capture");
startMessage.add(scanN);
startMessage.add(int(16*turnN*STEP_PER_DEG));
startMessage.add(cp5.get(Textfield.class, "scan_name").getText());
oscP5.send(startMessage, remoteControl);

(remoteControl is slcapture.py)

Three values determine the "capture sequence":

1. how many total scans
2. how many steps to turn between each scan
3. what to name the folder of folders containing images

The rest of the program is basically pretty sliders to control the above parameters.