3.3. Frequently ISSUE
3.3.1、 When I run the RflySim platform for the first time, I cannot start RflySim3D when I open it, or it crashes immediately after starting it. What is the reason? How to solve it?
Answer to questions:
1.Try to reinstall RflySim3D, open the RflySim platform software installation package, run the OnekeyScrip.p file, and select the sixth option of the one-click installation script in the pop-up toolbox to reinstall RflySim3D software.
2.Check whether the PC driver is updated. You can update the PC driver in the following ways:
Method 1: Manually Update using Device Manager
1.Open the Device Manager: First, you need to open the Device Manager. You can open Device Manager by right clicking on the "This Computer" icon, then selecting "Generic" and then clicking on "Device Manager" on the left.
2.Locate the Display Adapter: In Device Manager, locate and expand the "Display Adapter" category.
3.Update Drivers: Right click on your NVIDIA graphics card and select "Update Drivers". In the window that pops up, select "Automatically Search for updated drivers." This way, the Windows system will automatically search for and download the latest drivers for your graphics card from the Internet.
4.Install a new driver: If you find a new driver, you will start installing it. The computer screen may flicker or briefly go black during installation. After the installation is complete, restart your computer for the new driver to take effect.
Method 2: use NVIDIA's website (https://www.nvidia.cn/geforce/drivers/) manually download and install
1.Visit the NVIDIA's official website (https://www.nvidia.cn/geforce/drivers/) : first of all, you need to visit the NVIDIA's official website, and click the "driver" TAB.
2.Select video card series, model, operating system and other information: In the page that opens, select your video card series, model, operating system and other information, and then click the "Search" button.
3.Download and install a new driver: In the search results, find the latest version of the driver, click the "download" button, start to download the driver file. Once the download is complete, run the driver file to begin installing the driver.
Method 3 of 3: Updating with Third-party Software 1 Install the driver
1.Download and install third-party software: You can choose to use third-party software such as "Driver Life" to update the driver. These programs automatically scan for missing drivers and recommend an installer that matches your computer.
2.Scan and update the driver: Open the third-party software, click Scan Now, the software will automatically scan the missing driver, and recommend the installation program to match the computer. Select the driver you want and click Upgrade Driver.
3.3.2、 When SITLRun software is running in the ring simulation, it can only switch with the M shortcut key in RflySim3D, and the result is that it can only change the scene map in one scene. I also tried to switch the scene map of CopterSim after suspending the operation in CopterSim.
Answer to questions:
RflySim3D's M button can't switch maps with CopterSim open. You can only change the UE4_MAP value in the bat script, as shown below:
Tip: If you need to switch the scene in RflySim3D, you need to open the RflySim3D software separately, and directly press "M" to switch the scene.
3.3.3、How to add factors such as weather and sunshine into RflySim3D scene, and how to reflect them in this UE project?**
Answer to questions:
Adding influences such as weather and sunlight to RflySim3D may require some custom work, as these features are not built in like they are in UE4. Here's the general idea:
Add weather and sunshine influences to RflySim3D:
1.Weather effects:
- Particle system: You can use RflySim3D's particle system to simulate rain, snow and more effects. Create a particle system, adjust the shape, size, speed and other parameters of the particle, place it in the scene, you can simulate the weather effect.
- Material change: By adjusting the material in the scene, you can simulate fog, wind and other effects. For example, changing the transparency and color of the ground material can achieve the effect of fog.
- Custom scripts: If you need more complex weather effects, you may need to write some custom scripts. For example, change particle effects and material properties in the scene depending on the time of day and weather conditions.
2.Sunshine effects:
- Lighting Settings: RflySim3D allows you to adjust the lighting effects in your scene. You can add light sources, adjust their position and intensity, and simulate the sunlight effect. By changing the Angle and intensity of the light source, you can achieve different hours of sunshine effect.
- Dynamic sky box: Using a dynamic sky box or sky ball, you can simulate different lighting effects at sunrise, sunset and other times. This can increase the reality of the scene.
- Global Lighting: Similarly, you may be able to adjust the global lighting Settings to simulate how light propagates and reflects in an underwater environment.
Reflected in the UE4 project:
1.Export scenario:
- If you want to reflect the effect in RflySim3D in UE4, you need to export the scene in RflySim3D first. This may involve exporting elements such as molds, materials, lighting, etc. to a format suitable for UE4 (such as FBX).
2.Import to UE4:
- Import exported scenes and models into UE4. Make sure to adjust the scaling and scale so that it appears correctly in UE4.
3.Set the weather and sunshine:
- In UE4, you can use the built-in weather system or third-party plugins to achieve weather effects. Apply the weather system to the scene and adjust the parameters of the weather effect, such as rainfall, wind, etc.
- Similarly, by adjusting the light source and material in the scene, the sunshine effect can be achieved. Make sure the position and intensity of the light source matches the Settings in RflySim3D.
3.3.4、How do I generate an underwater scene in RflySim3D?**
Answer to questions:
Generating underwater scenes in RflySim3D requires some special Settings and tricks, as it involves simulating the underwater environment and underwater vehicle behavior. Here are the general steps:
1.Choose the right scene: First make sure to choose a scene suitable for underwater flight simulation. Ideally, the scene should contain a body of water, such as a lake, ocean, or underwater cave.
2.Set up the underwater environment: In RflySim3D, you can simulate the underwater environment by editing the scene. You can add water bodies in the scene editor and adjust the properties of the water body to simulate the appearance and behavior of the underwater environment. You may need to adjust parameters such as water color, transparency, waves, etc. to achieve a realistic underwater effect.
3.Adjust vehicle parameters: If you are simulating an underwater vehicle, you may need to adjust the vehicle's parameters to suit the underwater environment. This may involve changing the vehicle's buoyancy, thrust, control response and other parameters to ensure that it can fly stably underwater and respond correctly to maneuvers.
4.Testing and optimization: Once the underwater scenario and vehicle parameters are set up, the tests can be carried out and the necessary optimizations made. Make sure the underwater vehicle performs well in the simulated environment and simulates the feel and behavior of flying underwater as realistically as possible.
3.3.5、When using the Cesium component, the scene is blank after adding the item to the UE level (the network is not good), how to solve the problem?
Answer to questions:
When using the Cesium component, if you experience a blank scene after adding a project to a UnrealEngine (UE) level, there are several reasons why. Here are some possible solutions:
1.Wait to load: If your network connection is not good, the Cesium component may take too long to load or it may fail to load. First, make sure your network connection is stable, and then wait for a while to see if it can load successfully. Sometimes it can take a long time to load, especially for large scenes or complex geographic data.
2.Check resource links: Make sure that the resource files required by the Cesium component are properly linked in your project. These resource files include terrain data, image data, 3D models, etc. If the resource link is incorrect or missing, the scene may not load or appear blank.
3.Check configuration parameters: Check whether the configuration parameters of the Cesium component are set correctly. These parameters include the geographical coordinate system, topographic resolution, image resolution, etc. If the configuration parameters are set incorrectly, the scene may not display properly.
4.Check logs and error messages: Check logs and error messages in UnrealEngine for possible loading problems or error representations. This information will help you locate and resolve the problem more quickly.
5.Optimize load performance: If your scene contains a lot of geographic data or complex terrain models, it may affect load performance. Try optimizing the resolution of your geographic data and models, or use techniques like cascade loading to improve load performance.
6.Update component versions: If you are using an older version of the Cesium component, try updating to the latest version for fixed bugs and improved performance.
By using the above methods, you can try to solve the problem where the scene goes blank after adding the Cesium component to the UnrealEngine level. You need to step by step troubleshoot and resolve the possible causes of the problem on a case-by-case basis. Sometimes the load time can be long, especially for large scenes or complex geographic data.
Use the local URL (absolute path) or the nginx agent or Cesiumlab sliced URL to replace the local image or elevation data, there is a meta.json file in the same directory as the.json or.xml file, without this file there is no way to successfully load the image and elevation data. This file contains data such as latitude and longitude.
3.3.6、merge multiple images, how to solve the problem of using Cesium to merge multiple image data when the white edge around the image?**
Answer to questions:
The problem of white edges when dealing with merging multiple image data can be solved in Cesium by:
1.Preprocess image data:
It is a good practice to pre-process each image data before merging. Make sure that the borders of the image data are transparent and not white. You can use image manipulation software (such as Photoshop, GIMP, etc.) or image manipulation libraries (such as OpenCV, Pillow, etc.) to achieve this. By making the border transparent, you can avoid the problem of white edges after merging.
2.Adjust the parameters of the merge algorithm:
If you are using the merge tool or code base in Cesium, there may be some parameters you can adjust. These parameters usually include how the images are superimposed, transparency Settings, and so on. Try adjusting these parameters to see if you can reduce or eliminate the white edge problem.
3.Fix it manually:
If the auto-merge algorithm can't completely solve the white edge problem, you can try to fix it manually. In the merged image, use image editing software to manually remove or repair the white edges. This may take some time and effort, but it will ensure the quality of the final result.
4.Use border smoothing techniques:
There are image processing techniques that can help smooth borders and reduce or eliminate white edge problems. For example, you can try using an image filter or a boundary smoothing algorithm to process the merged image to make the boundary transition more natural.
5.Adjust the projection and coordinate system of the image data:
Before merging image data, make sure they all use the same projection and coordinate system. Different projections and coordinate systems may cause the merged images to appear misaligned or have discontinuous borders.
By combining the above methods, you should be able to effectively solve the white edge problem when combining multiple image data, resulting in a more perfect merge result.
3.3.7、Can I customize the RflySim3D aircraft trajectory color?**
Answer to questions:
At present, RflySim3D flight path modification color is still under development, and the flight path color modification is not supported for the time being.
3.3.8、px4\RflySim\RflySim3D path under the project can be opened directly with ue?**
Answer to questions:
RflySim3D itself does not support the secondary development function, you can directly use our packaged model or scene (or your own packaged) import software for simulation use.
3.3.9、RflySim3D inside the map is not for the plane landing without a shadow, just a virtual map.**
Answer to questions:
Yeah, it's a virtual map.
3.3.10、Whydoes the plane encounter a wall of air and not land on the ground?
Answer to questions:
Because the RflySim3D scene itself is a virtual scene.
3.3.11、Would you like to ask how to modify the left and right axes to be coaxial on the six axes of the platform?
Answer to questions:
Make an animation blueprint in it to control the logic of your own on the line, do not know to go to the mall to search vigilante, find a model to download in the project, see how the animation blueprint is written on the line, (right click the bone mesh to create an animation blueprint)
3.3.12、May I ask how to operate such a small size of the aircraft in the file I exported in UE4, and I can't see the model of the aircraft if I import RFlysim3D
Answer to questions:
Doesn't the small size of the aircraft import mean that it will be small when importing UE? Change the scaling when importing or set the correct unit when exporting the model from the 3D software. The correct unit, such as the default unit of 3dsmax is decimeter or something, the default system unit needs to be changed manually to cm.
3.3.13、I would like to ask if 3DMAX is grouped into animation blueprints and only needs to control the propeller without the motor, right? Is the motor classified under the body system?
Answer to questions:
Just keep the nodes that you need to control
3.3.14、How to solve this problem if the material is not imported successfully?
Answer to questions:
There is a problem with the material, UE points to see it, this inside also gives the material path, one point to change on the line.
3.3.15、If you want to add the steering gear to the arm and have a tilting structure, is it better to use the blueprint model or 3Dmax to import the custom UAV?
Answer to questions:
When processing the model in 3dsmax, bind the bone of the model (if not, it is OK to set up a group according to the relationship between each module, that is, the additional relationship between each axis), export FBX, select the bone mesh body when importing UE, and then control the bone rotation in the animation blueprint to achieve tilting, or export with the platform static mesh body. Use xml nodes to attach (this is cumbersome)
3.3.16、Does the new model aircraft not support sw import?
Answer to questions:
sw export fbx on the line, for example: sw export 3dsmax supported model types, with 3dsmax processing on the line. Commonly used 3D model types can finally import UE.
3.3.17、What software is the 3D simulation engine?
Answer to questions:
The RflySim3D software in the RflySim tool chain is developed based on Unreal Engine 4 and has a high realistic simulation effect. Users can design their own simulation scenarios and import them for simulation. The RflySimUE5 software, based on Unreal Engine 5, has a better display, but requires more performance and is currently only available for the full version.
3.3.18、Can the 3D engine be connected to Flightgear?
Answer to questions:
The Flightgear software is built-in in the installation package of the RflySim tool chain and can be used after installation. However, RflySim3D is recommended for poor simulation results.
For more questions, please visit：https://github.com/RflySim/Docs/issues