First, make sure you follow the EasyOpenCV installation instructions to add OpenCV into your FTC SDK project!
If you want to use EOCV-Sim with OpenCvPipelines that are already in Android Studio, that's easily possible using the workspaces feature.
To achieve this, you need to isolate your pipeline's source files into their own package. Since EOCV-Sim only implements a very small part of the FTC SDK, if you try to compile a class that references stuff like OpMode or DcMotor, it will fail since those classes don't exist in EOCV-Sim.
The only classes from the FTC SDK and EasyOpenCV that have been implemented are...
| Package | Classes |
|---|---|
| org.firstinspires.ftc.robotcore.external | Telemetry (partially) Func |
| org.firstinspires.ftc.robotcore.external.function | Consumer |
| com.qualcomm.robotcore.util | ElapsedTime MovingStatistics Range Statistics |
| org.openftc.easyopencv | OpenCvPipeline OpenCvTracker OpenCvTrackerApiPipeline TimestampedOpenCvPipeline |
| org.opencv | * (everything) |
This also means that you do not need to use theOpenCvCamerarelated stuff in EOCV-Sim, inputs are simulated using Input Sources.
For example, you can have the following package structure in your Android Studio project to isolate OpenCvPipelines and load them into EOCV-Sim:
The VisionTestOpModeclass can freely use any of the FTC SDK or EasyOpenCV classes, such as OpModeorOpenCvCamera, while the classes under the visionpackage should only use the ones specified in the table before, including the whole OpenCV library of course.
Now, you will select the vision package as a workspace in EOCV-Sim. To select a workspace you can go to Workspace -> Select workspace, like in the gif shown below (both options showcased do the same thing):
To find the vision folder in the project, first locate the root folder of your FTC SDK project in the file selector, something that looks like this:
Then, navigate through the foldersTeamCode/src/main/java/org/firstinspires/ftc/teamcode and you will find the following:
Select the vision folder and click on "Open". The pipelines inside will be compiled in a few instants, and you will have them on the pipeline selector once it finishes successfully:
And now you are done! You will now be able to modify your pipelines from Android Studio and see the changes live. Refer to the features section to learn more about the additional features of EOCV-Sim