Unigine.ObjectMeshCluster Class
| Inherits: | Object |
A MeshCluster class allows you to bake identical meshes (with the same material applied to their surfaces) into one object, which provides less cluttered spatial tree, reduces the number of texture fetches and speeds up rendering.
Meshes are rendered within a specified visibility distance from the camera. When moving away from this distance, meshes fade out and then disappear completely.
See Also#
A set of UnigineScript API samples located in the <UnigineSDK>/data/samples/objects/ folder:
ObjectMeshCluster Class
Properties
int NumMeshes#
The total number of meshes handled by the mesh cluster.
float FadeDistance#
The distance up to which meshes handled by the mesh cluster will be fading out. the default is 0.
set
Sets the distance up to which meshes handled by the mesh cluster will be fading out (that is, fewer meshes will be rendered instead of all). The distance is measured starting from the visible distance. The default is 0. Using fade distance allows the objects to disappear one by one until up to the fade distance only a few left. It makes the disappearing smooth and much less noticeable.
set value -
Distance of fading for meshes, in units. If a negative value is provided, 0 will be used instead.
float VisibleDistance#
The distance up to which meshes handled by the mesh cluster are rendered. the default is infinity (in this case, fade distance is ignored).
set
Sets the distance up to which meshes handled by the mesh cluster will be rendered. The default is infinity (in this case, fade distance will be ignored).
set value -
Visibility distance for meshes in units. If a negative value is provided, 0 will be used instead.
string MeshName#
The name of the mesh handled by a mesh cluster.
set
set value -
Path to the mesh to be set.
Members
static ObjectMeshCluster ( string path, bool unique = 0 ) #
ObjectMeshCluster constructor.Arguments
- string path - Name of the mesh file.
- bool unique - When you create several objects out of a single .mesh file, the instance of the mesh geometry is created. If you then change the source geometry, its instances will be changed as well. To avoid this, set the unique flag to 1, so a copy of the mesh geometry will be created and changes won't be applied.
static ObjectMeshCluster Cast ( Node node ) #
Casts an ObjectMeshCluster out of the Node instance.Arguments
- Node node - Node instance.
Return value
ObjectMeshCluster instance.static ObjectMeshCluster Cast ( Object base ) #
Casts an ObjectMeshCluster out of the Object instance.Arguments
- Object base - Object instance.
Return value
ObjectMeshCluster instance.int SetMesh ( Mesh mesh ) #
Copies the source mesh into the current mesh.Arguments
- Mesh mesh - Source mesh to be copied.
Return value
1 if the mesh is copied successfully; otherwise, 0.int GetMesh ( Mesh mesh ) #
Copies the current mesh into the target mesh.Arguments
- Mesh mesh - Target mesh.
Return value
1 if the mesh is copied successfully; otherwise, 0.void SetMeshName ( string name, bool force_load = 0 ) #
Sets a path to the mesh handled by the mesh cluster and forces creating of the mesh using the new path.Arguments
- string name - Path to the mesh to be set.
- bool force_load - Force flag.
- If 1 is specified, a new path to the mesh is set immediately with the unique flag set to 0.
- If 0 is specified, only the path to the mesh is updated.
void SetMeshName ( string name ) #
Arguments
- string name - Path to the mesh to be set.
int AddMeshTransform ( ) #
Adds a new mesh instance transformation to the cluster. To set the new added transformation pass the return value of this method to the setMeshTransform() method.Return value
Number of the last added mesh instance.void SetMeshTransform ( int num, mat4 transform ) #
Sets the transformation for the given mesh instance.Arguments
- int num - Mesh instance number.
- mat4 transform - Mesh transformation matrix.
mat4 GetMeshTransform ( int num ) #
Returns the transformation of the given mesh instance.Arguments
- int num - Mesh instance number.
Return value
Mesh transformation matrix.void RemoveMeshTransform ( int num ) #
Removes the transformation of the specified mesh instance from the cluster.Arguments
- int num - Mesh instance number.
void RemoveMeshTransformFast ( int num ) #
Removes the transformation of the specified mesh instance from the cluster.Arguments
- int num - Mesh instance number.
void UpdateSpatialTree ( ) #
Updates the spatial tree of the mesh cluster. Spatial tree is updated in the next frame, this method can be used to update the tree immediately.int GetNumSurfaceTargets ( int surface ) #
Returns the total number of surface targets.Arguments
- int surface - Surface number.
Return value
Total number of surface targets.string GetSurfaceTargetName ( int surface, int target ) #
Returns the name of a given surface target.Arguments
- int surface - Surface number.
- int target - Target number.
Return value
Target name.void ClearMeshes ( ) #
Deletes all meshes from the mesh cluster.bool CreateMesh ( string path, bool unique = 0 ) #
Creates a mesh.Arguments
- string path - Mesh name.
- bool unique - When you create several objects out of a single .mesh file, the instance of the mesh geometry is created. If you then change the source geometry, its instances will be changed as well. To avoid this, set the unique flag to 1, so a copy of the mesh geometry will be created and changes won't be applied.
Return value
Returns 1 if the mesh is created successfully; otherwise, 0.void CreateMeshes ( Mat4[] transforms ) #
Creates meshes is accordance with the transformations vector (world coordinates) and bakes them into the cluster. All baked meshes are identical to the source mesh and have the same material applied to their surfaces.Arguments
- Mat4[] transforms - Transformations vector in world coordinates.
void AppendMeshes ( Mat4[] transforms ) #
Appends new meshes with transformations stored in the specified vector (world coordinates) and bakes them into the cluster. All baked meshes are identical to the source mesh and have the same material applied to their surfaces.Arguments
- Mat4[] transforms - Transformations vector in world coordinates.
int FindSurfaceTarget ( string name, int surface ) #
Searches for a surface target with a given name.Arguments
- string name - Target name.
- int surface - Surface number.
Return value
Target number if it exists; otherwise, -1.void FlushMesh ( ) #
Flushes the mesh geometry into the video memory.bool LoadMesh ( string path ) #
Loads the mesh for the current mesh from the .mesh file. This function doesn't change the mesh name.Arguments
- string path - Path to the .mesh file.
Return value
1 if the mesh is loaded successfully; otherwise, 0.bool SaveMesh ( string path ) #
Saves the cluster mesh to a .mesh file.Arguments
- string path - Path to the .mesh file.
Return value
1 if the mesh is saved successfully; otherwise, 0.static int type ( ) #
Returns the type of the node.Return value
Node type identifier.bool RemoveClusterTransforms ( WorldBoundBox bb ) #
Removes cluster meshes, found within the specified bounding box, from the cluster.Arguments
- WorldBoundBox bb - Bounding box, defining the area, within which the cluster meshes are to be removed from the cluster.
Return value
Number of cluster meshes removed from the cluster; or 0, if there are no cluster meshes found within the specified bounding box.bool DetachClusterTransforms ( WorldBoundBox bb, mat4[] transforms ) #
Detaches cluster meshes, found within the area specified by the given bounding box, from the cluster and puts their transformations (local coordinates) to the specified buffer.Arguments
- WorldBoundBox bb - Bounding box, defining the area, within which the cluster meshes are to be detached from the cluster.
- mat4[] transforms - Buffer to store transformations of detached cluster meshes.
Return value
Number of cluster meshes detached from the cluster; or 0, if there are no cluster meshes found within the specified bounding box.bool DetachClusterWorldTransforms ( WorldBoundBox bb, Mat4[] transforms ) #
Detaches cluster meshes, found within the area specified by the given bounding box, from the cluster and puts their transformations (world coordinates) to the specified buffer.Arguments
- WorldBoundBox bb - Bounding box, defining the area, within which the cluster meshes are to be detached from the cluster.
- Mat4[] transforms - Buffer to store transformations of detached cluster meshes.
Return value
Number of cluster meshes detached from the cluster; or 0, if there are no cluster meshes found within the specified bounding box.bool GetClusterTransforms ( WorldBoundBox bounds, mat4[] transforms ) #
Collects transformations (local coordinates) for all cluster meshes within the area specified by the given bounding box and puts them to the specified buffer.Arguments
- WorldBoundBox bounds - Bounding box, defining the area, for which the transformations of cluster meshes are to be collected.
- mat4[] transforms - Buffer to store transformations of cluster meshes.
Return value
1, if there are transformations of cluster meshes; or 0, if there are no transformations of cluster meshes found.bool GetClusterWorldTransforms ( WorldBoundBox bounds, Mat4[] transforms ) #
Collects transformations (world coordinates) for all cluster meshes within the area specified by the given bounding box and puts them to the specified buffer.Arguments
- WorldBoundBox bounds - Bounding box, defining the area, for which the transformations of cluster meshes are to be collected.
- Mat4[] transforms - Buffer to store transformations of cluster meshes, in world coordinates.
Return value
1, if there are transformations of cluster meshes; or 0, if there are no transformations of cluster meshes within the specified area.Last update:
2019-08-16
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