# Debugging IG Application

> **Warning:** The functionality described in this article is not available in the Community SDK edition.
> You should upgrade to [**Sim**](https://l.unigine.com/SdhugY462) SDK edition to use it.


The debug mode allows inspecting the IG application at run-time. In this mode you can use various console commands to obtain corresponding visual information.


![](ig_debug.png)

*Path Tracing mode enabled*


To enable the Debug mode, open the built-in console (use the **F1** key) and type [`ig_debug 1`](#ig_debug).


## Console Commands


Visualization of debugging information.

| ig_debug |  |
|---|---|
| **Description:** - **Variable.** � Prints a value indicating if the option controlled by the command below is enabled. - **Command.** � Toggles the debug mode. | **Arguments:** **0** - disabled **1** - enabled |
| ig_debug_requests |  |
| **Description:** - **Variable.** � Prints a value indicating if the option controlled by the command below is enabled. - **Command.** � Toggles visualization of where LOS/HAT/HOT requests are sent to. ![](ig_debug_hathot.png) | **Arguments:** **0** - disabled **1** - enabled |
| ig_debug_pathtrace |  |
| **Description:** - **Variable.** � Prints a value indicating if the option controlled by the command below is enabled. - **Command.** � Toggles tracing of the entity path � the position between frames and data sent over the network. Blue points mark data from the server; pink arrows � movement between frames. ![](ig_debug_tracing2.png) | **Arguments:** **0** - disabled **1** - enabled |
| ig_debug_collision_segment |  |
| **Description:** - **Variable.** � Prints a value indicating if the option controlled by the command below is enabled. - **Command.** � Toggles visualization of collision segments for every entity. ![](ig_debug_collision_segment.png) | **Arguments:** **0** - disabled **1** - enabled |
| ig_debug_collision_volume |  |
| **Description:** - **Variable.** � Prints a value indicating if the option controlled by the command below is enabled. - **Command.** � Toggles visualization of collision volumes for every entity. ![](ig_debug_collision_volume.png) | **Arguments:** **0** - disabled **1** - enabled |
| ig_debug_entity_info |  |
| **Description:** - **Variable.** � Prints a value indicating if the option controlled by the command below is enabled. - **Command.** � Toggles visualization of the basis for every CIGI and DIS entity with the ID, type, and type name specified (information is taken from the [IG configuration](../../ig/config.md) file). ![](ig_debug_entity_info.png) | **Arguments:** **0** - disabled **1** - enabled |
| ig_debug_interpolation |  |
| **Description:** - **Variable.** � Prints a value indicating if the option controlled by the command below is enabled. - **Command.** � Toggles visualization of the interpolation timer parameters and states on the screen. | **Arguments:** **0** - disabled **1** - enabled |
| ig_debug_switch_entity |  |
| **Description:** Switches the current camera to another entity. This command can be used for DIS debugging as such functionality is not supported natively. |  |
| ig_debug_visualizer_depth |  |
| **Description:** - **Variable.** � Prints a value indicating if the option controlled by the command below is enabled. - **Command.** � Toggles depth testing for Debug visualizer elements (if elements should be obscured by the ones closer to the camera). | **Arguments:** **0** - disabled **1** - enabled |
| ig_debug_visualizer_depth_test |  |
| **Description:** - **Variable.** � Prints the current depth testing mode for Debug visualizer elements. This mode defines the way hidden (obscured by geometry) lines and points are drawn (can help understand their real position in screen captures). - **Command.** � Sets the depth testing mode for Debug visualizer elements. This mode defines the way hidden (obscured by geometry) lines and points are drawn (can help understand their real position in screen captures). | **Arguments:** **0** - 0 � depth testing is disabled (hidden lines are drawn as visible ones) **1** - 1 � hidden lines are not displayed at all **2** - 2 � hidden lines are drawn dashed/pattern (by default) |
| ig_debug_visualizer_duration |  |
| **Description:** - **Command.** Sets the visualization time period (in seconds). | **Arguments:** 10.0 � default |
| ig_debug_visualizer_scale |  |
| **Description:** - **Command.** Sets the scale used when rendering Debug visualizer elements. | **Arguments:** 1.0 � default |
| ig_debug_visualizer_screenspace |  |
| **Description:** - **Variable.** � Prints the current type of dimensions used when rendering Debug visualizer elements: - **Command.** � Sets the type of dimensions used when rendering Debug visualizer elements: | **Arguments:** **0** - false � use the world space dimensions (by default) **1** - true � use the screen space dimensions |
| ig_debug_visualizer_pixelsize |  |
| **Description:** - **Variable.** � Prints the current size of visualizer lines in pixels (screenspace mode only). - **Command.** � Sets the size of visualizer lines in pixels (screenspace mode only). | **Arguments:** **[0; inf]** - available range **3** - by default |
| ig_debug_visualizer_worldsize |  |
| **Description:** - **Variable.** � Prints the current size of visualizer lines in meters (worldspace mode only). - **Command.** � Sets the size of visualizer lines in meters (worldspace mode only). | **Arguments:** **[0; inf]** - available range **0.5** - by default |
| ig_state_save |  |
| **Description:** Saves the current IG state to the specified file. The state can be used to simplify localization of problems occurring for specific settings or conditions (e.g. save a state and submit it to technical support engineer). | **Arguments:** **Path** to the file to save the IG state to. |
| ig_state_load |  |
| **Description:** Loads IG state from the specified file and applies it. The state can be used to simplify localization of problems occurring for specific settings or conditions (e.g. save a state and submit it to technical support engineer). | **Arguments:** **Path** to the file to load the IG state from. |


A set of console commands controlling interpolation and extrapolation. These commands should be used on Master.

| ig_interpolation_enable |  |
|---|---|
| **Description:** - **Variable.** � Prints a value indicating if the option controlled by the command below is enabled. - **Command.** � Toggles interpolation. | **Arguments:** **0** - disabled **1** - enabled |
| ig_interpolation_period |  |
| **Description:** - **Command.** Sets the interpolation time period. | **Arguments:** 0.2 � default |
| ig_extrapolation_period |  |
| **Description:** - **Command.** Sets the extrapolation time period. | **Arguments:** 0.0 � default |


## Debug Options


### Free-Flying Camera


In the Debug mode, you can switch to the free-flying camera.


- F � switching to a free-flying camera.
- G � switching back to the entity camera.