Unigine.ObjectMeshStatic Class

A static mesh represents a non-deformable collection of vertices, edges, and triangles defining the object's geometry. By default, its geometry is fixed at runtime and can only be transformed as a whole (moved, rotated, scaled). However, ObjectMeshStatic supports optional procedural modes, which allows modifying or generating mesh data in runtime via code.

Procedural Mesh Workflow#

Static meshes support streaming, allowing geometry to be loaded from disk on demand to reduce memory usage. However, when procedural mode is enabled, streaming behavior changes depending on the selected mode, some modes keep all data in memory, while others allow disk-based access. These differences directly affect performance and memory consumption during runtime.

When using static meshes for procedural geometry, the typical workflow is:

Create or Load a Mesh
Begin by creating a mesh using the Mesh API or loading an existing one from disk. You can fully define geometry in code (vertices, indices, surfaces, etc.), or reuse prepared assets as input data.
Bind the Mesh to the Object
Assign the mesh to a static mesh using one of the available application methods (see below). At this stage, the mesh is not yet editable unless procedural mode is enabled.
Enable Procedural Mode
Call setMeshProceduralMode to enable runtime modification. Geometry cannot be modified unless one of the procedural modes is selected.

Notice
Each procedural mode has specific behavior regarding how geometry is stored and accesed (in RAM, VRAM, or file). See the PROCEDURAL_MODE descriptions for details on how each mode handles memory, streaming, and performance.
Apply or Generate Geometry
There are two main approaches to updating procedural mesh data:
- Use Simplified Generation API
  For common procedural workflows, the runGenerateMeshProceduralAsync() and runGenerateMeshProceduralForce() methods allow you to schedule mesh generation via callbacks. The engine handles threading and timing internally. In your callback, you define how the geometry is built (e.g. populate Mesh and MeshRender), and the engine will apply it automatically.
- Use Direct Application Methods
  You can also apply mesh data directly using a set of methods that differ by update strategy. All of them serve the same purpose: replace the current mesh with new data. The differences are encoded in the method names:
  - copy: Mesh data is copied into the object's internal memory.
  - move: Mesh data is transferred into the object using move semantics, without memory copying. This avoids the cost of copying operations and allows for faster updates.
  - force: The operation is executed immediately in the main thread. Useful for real-time updates when delay is unacceptable. In PROCEDURAL_MODE_DYNAMIC, forced move behaves identically to its asynchronous variant.
  - async: This avoids blocking the main thread and is especially useful in PROCEDURAL_MODE_FILE or PROCEDURAL_MODE_BLOB modes, where disk I/O or memory streaming can be offloaded.
  Notice
  If a method name contains one of these terms, it reflects how the mesh data is transferred and when the operation is performed.
  
  Choose the method that matches your needs, e.g. use applyCopyMeshProceduralForce() for an immediate copy, or applyMoveMeshProceduralAsync() to transfer data without blocking the main thread.
Finalize for Collision and Intersection Support
If the mesh is intended to participate in collision and intersection checks, you must explicitly call createCollisionData() after geometry modification is complete. That ensures that required internal data structures (such as edges and spatial tree) are generated and up-to-date.

Properties:

Name	Description
string MeshPath	The path to the source .mesh-file used for the object.
bool IsMeshLoadedVRAM	The value indicating if the source mesh used for the object is loaded to video memory (VRAM).
bool IsMeshLoadedRAM	The value indicating if the source mesh used for the object is loaded to memory (RAM).
bool IsMeshNull	The value indicating if the source mesh used for the object is null (does not exist, unassigned, not loaded, etc.
ObjectMeshStatic.PROCEDURAL_MODE MeshProceduralMode	The value indicating which procedural mesh generation mode assigned to the mesh.
bool IsMeshProceduralDynamic	The value indicating if the current procedural mode is PROCEDURAL_MODE_DYNAMIC.
bool IsMeshProceduralActive	The value indicating if an asynchronous operation on the procedural mesh is currently in progress.
bool IsMeshProceduralDone	The value indicating if all asynchronous operations on the procedural mesh have completed.

Methods:

Name	Description View: Sort by:
ObjectMeshStatic has overloads	ObjectMeshStatic constructor.
type	Returns the type of the object.
SetLightmapEnabled	Sets a value indicating if lightmapping is to be enabled for the surface with the specified number.
IsLightmapEnabled	Returns a value indicating if lightmapping is enabled for the surface with the specified number.
SetLightmapMode	Sets a new lightmap mode for the surface with the specified number.
GetLightmapMode	Returns the current lightmap mode for the surface with the specified number.
SetLightmapSourceSurface	Sets a new source mesh surface number for the surface with the specified number.
GetLightmapSourceSurface	Returns the current source mesh surface number for the surface with the specified number.
IsLightmapCompression	Returns a value indicating if the lightmap texture baked for the surface with the specified number is to be compressed.
SetLightmapCompression	Sets a value indicating if the lightmap texture baked for the surface with the specified number is to be compressed.
SetLightmapQuality	Sets a new lightmap baking quality preset for the surface with the specified number.
GetLightmapQuality	Returns the current lightmap baking quality preset for the surface with the specified number.
SetLightmapTextureFilePath	Sets a new path to the baked lightmap texture file to be used for the surface with the specified number.
GetLightmapTextureFilePath	Returns the path to the baked lightmap texture file currently used for the surface with the specified number.
SetSurfaceCustomTextureEnabled	Sets a value indicating if a custom texture is to be used for the surface with the specified number.
IsSurfaceCustomTextureEnabled	Returns a value indicating if a custom texture is to be used for the surface with the specified number.
SetSurfaceCustomTextureMode	Sets a new mode for the custom texture of the surface with the specified number.
GetSurfaceCustomTextureMode	Returns the current mode for the custom texture of the surface with the specified number.
SetSurfaceCustomTextureSourceSurface	Sets a new source mesh surface number for the surface with the specified number.
GetSurfaceCustomTextureSourceSurface	Returns the current source mesh surface number for the surface with the specified number.
SetSurfaceCustomTexturePath	Sets a new path to the custom texture to be used for the surface with the specified number.
GetSurfaceCustomTexturePath	Returns the path to the custom texture currently assigned to the surface with the specified index.
SetSurfaceCustomTexture	Sets a new texture to be used as a custom texture for the surface with the specified number.
GetSurfaceCustomTexture	Returns the texture currently used as a custom texture for the surface with the specified number.
GetMeshCurrentRAM	Returns the current source mesh used for the object and loaded to memory (RAM).
GetMeshCurrentVRAM	Returns the current source mesh used for the object and loaded to video memory (VRAM).
GetMeshForceRAM	Returns the source mesh used for the object and loads it to memory (RAM) immediately.
GetMeshForceVRAM	Returns the render mesh used for the object and loads it to video memory (VRAM) immediately.
GetMeshAsyncRAM	Returns the source mesh used for the object and loads it to memory (RAM) asynchronously.
GetMeshAsyncVRAM	Returns the render mesh used for the object and loads it to video memory (VRAM) asynchronously.
GetMeshDynamicRAM	Returns the procedural source mesh associated with the object and ensures it is loaded into system memory (RAM).
GetMeshDynamicVRAM	Returns the procedural render mesh associated with the object and ensures it is loaded into video memory (VRAM).
LoadAsyncVRAM	Asynchronously loads the mesh to video memory (VRAM) if the async streaming mode for meshes is enabled.
LoadAsyncRAM	Asynchronously loads the mesh to memory (RAM) if the async streaming mode for meshes is enabled.
LoadForceVRAM	Performs force-loading of the mesh to video memory (VRAM) immediately.
LoadForceRAM	Performs force-loading of the mesh to memory (RAM) immediately.
SetMeshProceduralMode	Sets the procedural mode for the mesh.
CreateCopyMeshRAM	Creates and returns a copy of the source mesh used by the object, loading it directly from disk if it is not present in cache.
GetCopyMeshRAM	Retrieves a copy of the source mesh used by the object and writes it to the provided mesh object.
ApplyCopyMeshProceduralForce	Copies all vertex data from the given mesh into the object's procedural mesh forcibly, executing the operation immediately.
ApplyMoveMeshProceduralForce has overloads	Moves all vertex data from the given mesh into the object's procedural mesh forcibly, executing the operation immediately without memory allocation and data copying (move semantics).
ApplyCopyMeshProceduralAsync	Copies all vertex data from the given mesh into the object's procedural mesh asynchronously.
ApplyMoveMeshProceduralAsync has overloads	Moves all vertex data from the given mesh into the object's procedural mesh asynchronously.
DeleteDynamicMesh	Releases all memory used by the procedural mesh, including both VRAM and RAM.
RunGenerateMeshProceduralAsync has overloads	Starts asynchronous generation of procedural mesh data.
RunGenerateMeshProceduralForce has overloads	Starts immediate (forced) generation of procedural mesh data.

ObjectMeshStatic Class

Enums

LIGHTMAP_QUALITY#

Lightmap baking quality preset to be used.

Name	Description
GLOBAL = 0	Global quality preset set in the Bake Lighting settings.
DRAFT = 1	Draft quality preset for lightmaps.
LOW = 2	Low quality preset for lightmaps.
MEDIUM = 3	Medium quality preset for lightmaps.
HIGH = 4	High quality preset for lightmaps.
ULTRA = 5	Ultra quality preset for lightmaps.

LIGHTMAP_MODE#

Lightmap mode defining the source of lightmap texture to be used.

Name	Description
UNIQUE = 0	Bake a unique lightmap texture for the surface.
CUSTOM = 1	Use a custom lightmap texture for the surface.
SURFACE = 2	Reuse an already baked lightmap texture from another surface. Can be used for LODs.

SURFACE_CUSTOM_TEXTURE_MODE#

Mode defining the source of surface custom texture to be used.

Name	Description
UNIQUE = 0	Use a unique custom texture for the surface.
SURFACE = 1	Use the custom texture from another surface. This option is intended for use with LODs having the same UV maps.

PROCEDURAL_MODE#

Name	Description
DISABLE = 0	Disables procedural mode. No procedural data is stored or managed.
DYNAMIC = 1	This mode is optimized for high-speed dynamic modifications. Provides the fastest performance, but with the highest RAM and VRAM usage. Meshes are not automatically unloaded, manual memory cleanup is required using DeleteDynamicMesh(). If a mesh is being streamed while modified, this may lead to a crash. Notice This mode is intended only for a small number of lightweight objects that are updated very frequently.
FILE = 2	In this mode, procedural mesh data is stored as temporary files on disk. Each time a procedural mesh is modified, the corresponding file is updated. This allows the engine to unload both RAM and VRAM when needed, at the cost of slightly lower performance due to disk I/O operations. Configuration is available through .boot or Console, but only takes effect at engine startup: mesh_procedural_path: defines the path where temporary procedural files are stored. mesh_procedural_read_only: disables writing to disk. Notice Disabling procedural mode for a mesh will delete its corresponding file. When multiple engine instances share the same mesh_procedural_path*, one instance may delete files that are still in use by another.
BLOB = 3	In this mode, all procedural data is stored in memory as a temporary Blob. VRAM and RAM are loaded directly from this Blob, which the engine can unload when needed by itself. Modifications are faster compared to FILE mode, but at the cost of increased RAM usage. Rendered (visible) meshes are stored uncompressed for optimal performance, while non-visible meshes are compressed to save memory.

Properties

string MeshPath#

The path to the source .mesh-file used for the object.

bool IsMeshLoadedVRAM#

The value indicating if the source mesh used for the object is loaded to video memory (VRAM).

bool IsMeshLoadedRAM#

The value indicating if the source mesh used for the object is loaded to memory (RAM).

bool IsMeshNull#

The value indicating if the source mesh used for the object is null (does not exist, unassigned, not loaded, etc.).

ObjectMeshStatic.PROCEDURAL_MODE MeshProceduralMode#

The value indicating which procedural mesh generation mode assigned to the mesh. The value corresponds to one of the available PROCEDURAL_MODE types, determining how procedural data is stored, updated, and unloaded.

bool IsMeshProceduralDynamic#

The value indicating if the current procedural mode is PROCEDURAL_MODE_DYNAMIC.

bool IsMeshProceduralActive#

The value indicating if an asynchronous operation on the procedural mesh is currently in progress.

bool IsMeshProceduralDone#

The value indicating if all asynchronous operations on the procedural mesh have completed.

Members

ObjectMeshStatic ( string path ) #

ObjectMeshStatic constructor. Creates a Static Mesh object with mesh loaded from the specified file.

Arguments

string path - Path to the source .mesh-file.

ObjectMeshStatic ( ) #

ObjectMeshStatic constructor. Creates an empty Static Mesh object.

static int type ( ) #

Returns the type of the object.

Return value

Object Mesh Static type identifier.

void SetLightmapEnabled ( bool enabled, int surface ) #

Sets a value indicating if lightmapping is to be enabled for the surface with the specified number.

Arguments

bool enabled - true to enable lightmapping for the surface with the specified number, or false - to disable.
int surface - Mesh surface number.

bool IsLightmapEnabled ( int surface ) #

Returns a value indicating if lightmapping is enabled for the surface with the specified number.

Arguments

int surface - Mesh surface number.

Return value

true if lightmapping is enabled for the surface with the specified number;otherwise, false.

void SetLightmapMode ( ObjectMeshStatic.LIGHTMAP_MODE mode, int surface ) #

Sets a new lightmap mode for the surface with the specified number.

Arguments

ObjectMeshStatic.LIGHTMAP_MODE mode - New lightmap mode to be set for the surface with the specified number. One of the LIGHTMAP_MODE values.
int surface - Mesh surface number.

ObjectMeshStatic.LIGHTMAP_MODE GetLightmapMode ( int surface ) #

Returns the current lightmap mode for the surface with the specified number.

Arguments

int surface - Mesh surface number.

Return value

Current lightmap mode for the surface with the specified number. One of the LIGHTMAP_MODE values.

void SetLightmapSourceSurface ( int source_surface, int surface ) #

Sets a new source mesh surface number for the surface with the specified number. A lightmap texture generated for the source mesh surface shall be used for the specified surface (available only when the lightmap mode for the surface is set to LIGHTMAP_MODE_SURFACE mode. This can be used as optimization for LODs.

Arguments

int source_surface - Source mesh surface number.
int surface - Mesh surface number.

int GetLightmapSourceSurface ( int surface ) #

Returns the current source mesh surface number for the surface with the specified number. A lightmap texture generated for the source mesh surface is used for the specified surface (available only when the lightmap mode for the surface is set to LIGHTMAP_MODE_SURFACE mode. This can be used as optimization for LODs.

Arguments

int surface - Mesh surface number.

Return value

Source mesh surface number.

bool IsLightmapCompression ( int surface ) #

Returns a value indicating if the lightmap texture baked for the surface with the specified number is to be compressed. Compressed lightmaps are lightweight, but please note that some compression artifacts may appear.

Arguments

int surface - Mesh surface number.

Return value

true if the lightmap texture baked for the surface with the specified number is to be compressed; otherwise, false.

void SetLightmapCompression ( bool enabled, int surface ) #

Sets a value indicating if the lightmap texture baked for the surface with the specified number is to be compressed. Compressed lightmaps are lightweight, but please note that some compression artifacts may appear.

Arguments

bool enabled - true to enable compression for the lightmap texture baked for the surface with the specified number, or false - to disable.
int surface - Mesh surface number.

void SetLightmapQuality ( ObjectMeshStatic.LIGHTMAP_QUALITY quality, int surface ) #

Sets a new lightmap baking quality preset for the surface with the specified number.

Arguments

ObjectMeshStatic.LIGHTMAP_QUALITY quality - New lightmap baking quality preset to be used for the surface with the specified number. One of the LIGHTMAP_QUALITY values.
int surface - Mesh surface number.

ObjectMeshStatic.LIGHTMAP_QUALITY GetLightmapQuality ( int surface ) #

Returns the current lightmap baking quality preset for the surface with the specified number.

Arguments

int surface - Mesh surface number.

Return value

Current lightmap baking quality preset for the surface with the specified number. One of the LIGHTMAP_QUALITY values.

void SetLightmapTextureFilePath ( string path, int surface ) #

Sets a new path to the baked lightmap texture file to be used for the surface with the specified number. You can use this method to specify a lightmap texture generated in a third-party software.

Arguments

string path - Path to the baked lightmap texture file to be used for the surface with the specified number.
int surface - Mesh surface number.

string GetLightmapTextureFilePath ( int surface ) #

Returns the path to the baked lightmap texture file currently used for the surface with the specified number.

Arguments

int surface - Mesh surface number.

Return value

Path to the baked lightmap texture file currently used for the surface with the specified number.

void SetSurfaceCustomTextureEnabled ( bool enabled, int surface ) #

Sets a value indicating if a custom texture is to be used for the surface with the specified number.

Arguments

bool enabled - true to enable using the custom texture for the surface with the specified number, or false - to disable.
int surface - Mesh surface number.

bool IsSurfaceCustomTextureEnabled ( int surface ) #

Returns a value indicating if a custom texture is to be used for the surface with the specified number.

Arguments

int surface - Mesh surface number.

Return value

true if a custom texture is to be used for the surface with the specified number; otherwise, false.

void SetSurfaceCustomTextureMode ( ObjectMeshStatic.SURFACE_CUSTOM_TEXTURE_MODE mode, int surface ) #

Sets a new mode for the custom texture of the surface with the specified number. This mode defines the source of the custom texture for the surface: either use a unique custom texture, or use a custom texture that is assigned to another surface of the mesh.

Arguments

ObjectMeshStatic.SURFACE_CUSTOM_TEXTURE_MODE mode - Custom texture mode to be set for the surface with the specified number. One of the SURFACE_CUSTOM_TEXTURE_MODE_ values.
int surface - Mesh surface number.

ObjectMeshStatic.SURFACE_CUSTOM_TEXTURE_MODE GetSurfaceCustomTextureMode ( int surface ) #

Returns the current mode for the custom texture of the surface with the specified number. This mode defines the source of the custom texture for the surface: either use a unique custom texture, or use a custom texture that is assigned to another surface of the mesh.

Arguments

int surface - Mesh surface number.

Return value

Current custom texture mode for the surface with the specified number. One of the SURFACE_CUSTOM_TEXTURE_MODE_ values.

void SetSurfaceCustomTextureSourceSurface ( int source_surface, int surface ) #

Sets a new source mesh surface number for the surface with the specified number. A custom texture generated for the source mesh surface shall be used for the specified surface (available only when the custom texture mode for the surface is set to SURFACE_CUSTOM_TEXTURE_MODE_SURFACE. This can be used as optimization for LODs.

Arguments

int source_surface - Source mesh surface number.
int surface - Mesh surface number.

int GetSurfaceCustomTextureSourceSurface ( int surface ) #

Returns the current source mesh surface number for the surface with the specified number. A custom texture generated for the source mesh surface is used for the specified surface (available only when the custom texture mode for the surface is set to SURFACE_CUSTOM_TEXTURE_MODE_SURFACE. This can be used as optimization for LODs.

Arguments

int surface - Mesh surface number.

Return value

Source mesh surface number.

void SetSurfaceCustomTexturePath ( string path, int surface ) #

Sets a new path to the custom texture to be used for the surface with the specified number. You can use this method to specify a texture generated in a third-party software.

Arguments

string path - Path to the custom texture to be assigned to the surface with the specified number.
int surface - Mesh surface number.

string GetSurfaceCustomTexturePath ( int surface ) #

Returns the path to the custom texture currently assigned to the surface with the specified index.

Arguments

int surface - Mesh surface number.

Return value

Path to the custom texture currently assigned to the surface with the specified number.

void SetSurfaceCustomTexture ( Texture texture, int surface ) #

Sets a new texture to be used as a custom texture for the surface with the specified number. You can use this method to set any texture.

Arguments

Texture texture - Texture to be set.
int surface - Mesh surface number.

Texture GetSurfaceCustomTexture ( int surface ) #

Returns the texture currently used as a custom texture for the surface with the specified number.

Arguments

int surface - Mesh surface number.

Return value

Texture used as a custom texture for the specified surface.

Mesh GetMeshCurrentRAM ( ) #

Returns the current source mesh used for the object and loaded to memory (RAM).

Return value

A current source mesh used for the object.

MeshRender GetMeshCurrentVRAM ( ) #

Returns the current source mesh used for the object and loaded to video memory (VRAM).

Return value

A current render mesh used for the object.

Mesh GetMeshForceRAM ( ) #

Returns the source mesh used for the object and loads it to memory (RAM) immediately.

Return value

A source mesh used for the object.

MeshRender GetMeshForceVRAM ( ) #

Returns the render mesh used for the object and loads it to video memory (VRAM) immediately. At that, the static mesh will also be loaded to memory (RAM).

Notice

Loading to VRAM must be performed in the main thread only.

Return value

A render mesh used for the object.

Mesh GetMeshAsyncRAM ( ) #

Returns the source mesh used for the object and loads it to memory (RAM) asynchronously.

Return value

A source mesh used for the object.

MeshRender GetMeshAsyncVRAM ( ) #

^{[ Main Thread ]}Returns the render mesh used for the object and loads it to video memory (VRAM) asynchronously. At that, the static mesh will also be loaded to memory (RAM).

Notice

Loading to VRAM must be performed in the main thread only.

Return value

A render mesh used for the object.

Mesh GetMeshDynamicRAM ( ) #

Returns the procedural source mesh associated with the object and ensures it is loaded into system memory (RAM). This method is only available when the mesh is in the dynamic (PROCEDURAL_MODE.DYNAMIC) mode. A procedural mesh is a mesh created via code and uses a specific streaming mode. In dynamic mode, the object constantly remains in memory after creation and is only unloaded manually using DeleteDynamicMesh() or when the procedural mode is changed.

Notice

Please note that procedural mesh modification directly affects streaming and memory usage (RAM, VRAM, and disk) depending on the selected procedural mode. For details, see the Procedural Mesh Workflow section.

Return value

A procedural source mesh used for the object.

MeshRender GetMeshDynamicVRAM ( ) #

Returns the procedural render mesh associated with the object and ensures it is loaded into video memory (VRAM). This method is only available when the mesh is in the dynamic (PROCEDURAL_MODE.DYNAMIC) mode. A procedural mesh is a mesh created via code and uses a specific streaming mode. In dynamic mode, the object constantly remains in memory after creation and is only unloaded manually using DeleteDynamicMesh() or when the procedural mode is changed.

Notice

Return value

A procedural render mesh used for the object.

bool LoadAsyncVRAM ( ) #

^{[ Main Thread ]}Asynchronously loads the mesh to video memory (VRAM) if the async streaming mode for meshes is enabled. Otherwise, the forced loading is performed. This method is recommended for implementing your own prefetch system (i.e. asynchronous pre-loading of meshes to video memory before they are used).

Notice

Loading to VRAM must be performed in the main thread only.

Return value

true if the mesh is loaded successfully, otherwise false. If the mesh is already loaded to VRAM, true will be returned.

bool LoadAsyncRAM ( ) #

Asynchronously loads the mesh to memory (RAM) if the async streaming mode for meshes is enabled. Otherwise, the forced loading is performed. This method is recommended for implementing your own prefetch system (i.e. asynchronous pre-loading of meshes to memory before they are used).

Return value

true if the mesh is loaded successfully, otherwise false. If the mesh is already loaded to RAM, true will be returned.

bool LoadForceVRAM ( ) #

Performs force-loading of the mesh to video memory (VRAM) immediately.

Notice

Loading to VRAM must be performed in the main thread only.

Return value

true if the mesh is loaded successfully, otherwise false. If the mesh is already loaded to VRAM, true will be returned.

bool LoadForceRAM ( ) #

Performs force-loading of the mesh to memory (RAM) immediately.

Return value

true if the mesh is loaded successfully, otherwise false. If the mesh is already loaded to RAM, true will be returned.

void SetMeshProceduralMode ( ObjectMeshStatic.PROCEDURAL_MODE mode, int mesh_render_flags = 0 ) #

Sets the procedural mode for the mesh. The specified mode defines how procedural data is stored, updated, and unloaded.

Notice

Arguments

ObjectMeshStatic.PROCEDURAL_MODE mode - One of the PROCEDURAL_MODE to apply to the mesh.
int mesh_render_flags - Optional usage flags that control how vertex and index data are stored for the mesh render.

Mesh CreateCopyMeshRAM ( ) #

Creates and returns a copy of the source mesh used by the object, loading it directly from disk if it is not present in cache. This method does not stream the copied mesh into memory cache, resulting in lower RAM usage.

Return value

A copy of the source mesh, or nullptr if source mesh is not presented in RAM or its file path is invalid.

bool GetCopyMeshRAM ( Mesh result ) #

Retrieves a copy of the source mesh used by the object and writes it to the provided mesh object. If the mesh is not present in cache, it is loaded directly from disk. This method does not stream the copied mesh into memory cache, resulting in lower RAM usage.

Arguments

Mesh result - Object that will receive a copy of the source mesh.

Return value

true if the mesh was copied successfully, false if source mesh is not present in RAM or its file path is invalid.

bool ApplyCopyMeshProceduralForce ( Mesh mesh, int mesh_render_flags = 0 ) #

^{[ Main Thread ]}

Copies all vertex data from the given mesh into the object's procedural mesh forcibly, executing the operation immediately. Works only when procedural mode is enabled.

Notice

Arguments

Mesh mesh - Source mesh to copy vertex data from.
int mesh_render_flags - Optional usage flags for MeshRender.

Return value

true if the mesh was copied successfully, otherwise false.

bool ApplyMoveMeshProceduralForce ( Mesh mesh, int mesh_render_flags = 0 ) #

^{[ Main Thread ]}

Moves all vertex data from the given mesh into the object's procedural mesh forcibly, executing the operation immediately without memory allocation and data copying (move semantics). Works only when procedural mode is enabled.

In PROCEDURAL_MODE_DYNAMIC, this method behaves identically to its asynchronous variant.

Notice

Arguments

Mesh mesh - Source mesh to move vertex data from.
int mesh_render_flags - Optional usage flags for MeshRender.

Return value

true if the mesh was moved (transferred without copying) successfully, otherwise false.

bool ApplyMoveMeshProceduralForce ( Mesh mesh_ram, MeshRender mesh_vram ) #

^{[ Main Thread ]}

Moves all vertex and render data from the given mesh_ram and mesh_vram into the object's procedural mesh forcibly, executing the operation immediately using move semantics, without data copying or VRAM allocation. Works only when procedural mode is enabled.

Notice

Arguments

Mesh mesh_ram - Source mesh containing vertex data.
MeshRender mesh_vram - Source mesh containing render data.

Return value

true if the data was moved (transferred without copying) successfully, otherwise false.

bool ApplyCopyMeshProceduralAsync ( Mesh mesh, int mesh_render_flags = 0 ) #

^{[ Main Thread ]}

Copies all vertex data from the given mesh into the object's procedural mesh asynchronously. The operation is not forced and is executed in the background with no noticeable delay. Works only when procedural mode is enabled.

In PROCEDURAL_MODE_FILE and PROCEDURAL_MODE_BLOB, this method performs faster compared to the forced variant, as file writes and memory operations are offloaded to background threads.

Notice

Arguments

Mesh mesh - Source mesh to copy vertex data from.
int mesh_render_flags - Optional usage flags for MeshRender.

Return value

true if the mesh was copied successfully, otherwise false.

bool ApplyMoveMeshProceduralAsync ( Mesh mesh, int mesh_render_flags = 0 ) #

^{[ Main Thread ]}

Moves all vertex data from the given mesh into the object's procedural mesh asynchronously. The operation is not forced and is executed in the background with no noticeable delay, without memory allocation and data copying (move semantics). Works only when procedural mode is enabled.

In PROCEDURAL_MODE_FILE and PROCEDURAL_MODE_BLOB, this method performs faster compared to the forced variant, as file writes and memory operations are offloaded to background threads.

Notice

Arguments

Mesh mesh - Source mesh to copy vertex data from.
int mesh_render_flags - Optional usage flags for MeshRender.

bool ApplyMoveMeshProceduralAsync ( Mesh mesh_ram, MeshRender mesh_vram ) #

^{[ Main Thread ]}

Moves all vertex and render data from the given mesh_ram and mesh_vram into the object's procedural mesh asynchronously, without copying or allocating VRAM. The operation is not forced and is executed in the background with no noticeable delay. Works only when procedural mode is enabled.

In PROCEDURAL_MODE_FILE and PROCEDURAL_MODE_BLOB, this method performs faster, as file writes and memory operations are offloaded to background threads.

In PROCEDURAL_MODE_DYNAMIC, this method behaves identically to its forced variant.

Notice

Arguments

Mesh mesh_ram - Source mesh containing vertex data.
MeshRender mesh_vram - Source mesh containing render data.

Return value

true if the data was moved successfully, otherwise false.

bool DeleteDynamicMesh ( ) #

^{[ Main Thread ]}

Releases all memory used by the procedural mesh, including both VRAM and RAM. Works only when procedural mode is set to PROCEDURAL_MODE_DYNAMIC.

Notice

Return value

true if the memory was released successfully, otherwise false.

bool RunGenerateMeshProceduralAsync ( GenerateMeshProcedural callback_generate, int mesh_render_flags = 0 ) #

^{[ Main Thread ]}

Starts asynchronous generation of procedural mesh data. The callback_generate function is executed in a background thread and must create and fill a mesh object with new data. The generated mesh will be transferred to the object once complete, without blocking the main thread. Works only when procedural mode is enabled.

Note that the callback is executed in a single dedicated thread controlled by the engine, it is not parallelized and must not spawn additional threads.

Notice

Arguments

GenerateMeshProcedural callback_generate - Callback function responsible for creating and filling the source mesh. Executed in the main thread. The function must have the following signature:
```
void GenerateMeshProcedural(Mesh mesh)
```
int mesh_render_flags - Optional usage flags for MeshRender.

Return value

true if the modification was completed and applied successfully, otherwise false

bool RunGenerateMeshProceduralAsync ( GenerateMeshProcedural callback_generate, DoneMeshProcedural callback_done, int mesh_render_flags = 0 ) #

^{[ Main Thread ]}

Note that the callback is executed in a single dedicated thread controlled by the engine, it is not parallelized and must not spawn additional threads.

Notice

Arguments

GenerateMeshProcedural callback_generate - Callback function responsible for creating and filling the source mesh. Executed in the main thread. The function must have the following signature:
```
void GenerateMeshProcedural(Mesh mesh)
```
DoneMeshProcedural callback_done - Optional callback executed after geometry has been fully applied. The function must have the following signature:
```
void DoneMeshProcedural()
```
int mesh_render_flags - Optional usage flags for MeshRender.

Return value

true if the generation was completed and applied successfully, otherwise false

bool RunGenerateMeshProceduralForce ( GenerateMeshProcedural callback_generate, int mesh_render_flags = 0 ) #

^{[ Main Thread ]}

Starts immediate (forced) generation of procedural mesh data. The callback_generate function is executed in the main thread and must create and fill a mesh object with new data. The generated mesh is applied to the object as soon as generation completes. Works only when procedural mode is enabled.

Notice

Arguments

GenerateMeshProcedural callback_generate - Callback function responsible for creating and filling the source mesh. Executed in the main thread. The function must have the following signature:
```
void GenerateMeshProcedural(Mesh mesh)
```
int mesh_render_flags - Optional usage flags for MeshRender.

Return value

true if the generation was completed and applied successfully, otherwise false

bool RunGenerateMeshProceduralForce ( GenerateMeshProcedural callback_generate, DoneMeshProcedural callback_done, int mesh_render_flags = 0 ) #

^{[ Main Thread ]}

Starts immediate (forced) generation of procedural mesh data. The callback_generate function is executed in the main thread and must create and fill a Mesh object with vertex data. Once the mesh is applied to the object, the optional callback_done is called on the main thread. Works only when procedural mode is enabled.

Notice

Arguments

GenerateMeshProcedural callback_generate - Callback function responsible for creating and filling the source mesh. Executed in the main thread. The function must have the following signature:
```
void GenerateMeshProcedural(Mesh mesh)
```
DoneMeshProcedural callback_done - Optional callback executed after geometry has been fully applied. The function must have the following signature:
```
void DoneMeshProcedural()
```
int mesh_render_flags - Optional usage flags for MeshRender.

Return value

true if the generation was completed and applied successfully, otherwise false

_{The information on this page is valid for UNIGINE 2.20 SDK.}

Last update: 2025-06-30

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Unigine.ObjectMeshStatic Class

In This Article:

Procedural Mesh Workflow#

See Also#

Properties:

Methods:

ObjectMeshStatic Class

Enums

LIGHTMAP_QUALITY#

LIGHTMAP_MODE#

SURFACE_CUSTOM_TEXTURE_MODE#

PROCEDURAL_MODE#

Properties

string MeshPath#

bool IsMeshLoadedVRAM#

bool IsMeshLoadedRAM#

bool IsMeshNull#

ObjectMeshStatic.PROCEDURAL_MODE MeshProceduralMode#

bool IsMeshProceduralDynamic#

bool IsMeshProceduralActive#

bool IsMeshProceduralDone#

Members

ObjectMeshStatic ( string path ) #

Arguments

ObjectMeshStatic ( ) #

static int type ( ) #

Return value

void SetLightmapEnabled ( bool enabled, int surface ) #

Arguments

bool IsLightmapEnabled ( int surface ) #

Arguments

Return value

void SetLightmapMode ( ObjectMeshStatic.LIGHTMAP_MODE mode, int surface ) #

Arguments

ObjectMeshStatic.LIGHTMAP_MODE GetLightmapMode ( int surface ) #

Arguments

Return value

void SetLightmapSourceSurface ( int source_surface, int surface ) #

Arguments

int GetLightmapSourceSurface ( int surface ) #

Arguments

Return value

bool IsLightmapCompression ( int surface ) #

Arguments

Return value

void SetLightmapCompression ( bool enabled, int surface ) #

Arguments

void SetLightmapQuality ( ObjectMeshStatic.LIGHTMAP_QUALITY quality, int surface ) #

Arguments

ObjectMeshStatic.LIGHTMAP_QUALITY GetLightmapQuality ( int surface ) #

Arguments

Return value

void SetLightmapTextureFilePath ( string path, int surface ) #

Arguments

string GetLightmapTextureFilePath ( int surface ) #

Arguments

Return value

void SetSurfaceCustomTextureEnabled ( bool enabled, int surface ) #

Arguments

bool IsSurfaceCustomTextureEnabled ( int surface ) #

Arguments

Return value

void SetSurfaceCustomTextureMode ( ObjectMeshStatic.SURFACE_CUSTOM_TEXTURE_MODE mode, int surface ) #

Arguments

ObjectMeshStatic.SURFACE_CUSTOM_TEXTURE_MODE GetSurfaceCustomTextureMode ( int surface ) #

Arguments

Return value

void SetSurfaceCustomTextureSourceSurface ( int source_surface, int surface ) #

Arguments

int GetSurfaceCustomTextureSourceSurface ( int surface ) #

Arguments

Return value

void SetSurfaceCustomTexturePath ( string path, int surface ) #

Arguments

string GetSurfaceCustomTexturePath ( int surface ) #

Arguments

Return value

void SetSurfaceCustomTexture ( Texture texture, int surface ) #

Arguments

Texture GetSurfaceCustomTexture ( int surface ) #