Seamless3d for Linux, Android & other OS
using Qt
Seamless3d is in the process of being ported to Qt. The current
online port that you can download is a cut down version. So far it
has been tested to compile and run on Linux Mint, Android and
Windows. It uses OpenGL ES instead of DirectX.
What it can do:
Load on startup a non g-zipped smls file named
model.smls located in your system's downloads folder.
Right drag to change the orientation of the view.
Drag to change the location of a nurbs control point.
Note: Only colour per vertex is currently supported.
You can
download the Qt project
for Seamless3d from this link.
Download and put this
model.smls
example file in your download folder before running the
program so that it has a file to load on startup.
If you want to test it using a file you have created your self
with the regular version of Seamless3d, make sure the file is
saved with the saveGZipped check box clear in settings.
Note: You can save with the current version of regular Seamless3d
however you will not be able to drag a control point for that file
in the Qt version until more porting is done. Regular Seamless3d
3.003 lets you save without this issue.
There is also a
minimalist
version you can download from this link that uses some
of the classes I have developed for Seamless3d but is kept to just
a few short files to keep it simple, making it ideal for testing
things out with a new compiler or operating system. It can not
open files containing nurbs patches like the bigger QT version of
seamless can, it can only open a file containing a low level mesh
of coloured triangles with normals (and render it and let the user
orientate the view) but should be helpful for anyone wanting to
learn about the inner workings of seamless or 3d rendering in
general using OpenGL ES. Don't forget to download this
mesh.smls example file and put it in
your system download folder before running the minimalist version
so that it has a file to load on startup.
Note: The GCC compiler will display thousands of warnings when
compiling. I will try fixing some of these when I have the time
but currently this is a very low priority for me.
I have had little trouble getting it to compile and run on Linux
Mint or Windows after downloading the seamless3d-qt.7z file but if
you want instructions for this let me know.
Generating an APK file for Android
I have found getting Qt to create an APK file for an Android much
more challenging than getting it to compile for Linux or Windows.
Just downloading and installing all the Java components seemed
complicated to begin with but in the end it was not as hard as I
initially thought and would have been simpler had I not installed
all the components that I did not need.
The components I needed was:
Android Studio which was straight forward to install.
Java NDK, just had to unzip it and specify a folder in Qt. I
downloaded the current NDK but later noticed an earlier version
(10e) was recomended.
I installed OpenJDK but later downloaded the Java JDK and
referenced this in Qt.
Apache Ant, just downloaded and specified the folder in Qt.
I have learnt if I begin without any baggage from a previous
installation (like no old android folder for creating an APK and
no added settings for Android in the project file) and delete the
output folder from the previous compile, I seem to get more
success. However after many intensive days working on this I still
do not feel confident in being able to reliably generate an APK
file. Sometimes it succeeds, sometimes it fails. If you are
experianced with Qt and you know what I am doing wrong please let
me know. I will be most greatfull for your time.
The procedure I use for generating an APK file is as follows:
After unzipping the seamless3d-qt.7z file, open the
seamless3d.pro
file in Qt.
Tick the checkbox for
Android for armeabi-v7a...
Click the
Configure Project button.
Wait untill the screen changes.
Click
Projects
Click the
details drop down button for
Build Android
APK
Click the
Create Templates button
At this stage you can set an icon for the APK file by clicking on
the icon button and selecting the
seamless3d.png file.
Click
Finish
Click the Debug button in the left and change the selection to
Release and wait for the compile and run buttons to have colour.
Click the hammer button once to leave the menu and then Click the
hammer button again to compile the project.
Ignore the
output omitted message or just click
clear so new messages can be displayed.
After a successful build the generated APK file will be located in
the folder:
build-seamless3d-Android_for_armeabi_v7a_GCC_.../android-build/build/outputs/apk
Copy the APK file to your android and then install it on the
android.
Download
model.smls and copy it to your
android’s downloads folder before running the app or it wont have
a file to load on startup.
Would love to hear from you if you have compiled the Seamless3d Qt
project and had it running on your system/s.
Compiling for Windows
Open the project file
windows-seamless3d.pro in Qt, click
configure and then compile.
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