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SimpleMeshT Class

SimpleMesh class is used to create Index and Vertex buffers from a list of structs which type is defined by the type T. For example the following struct SimpleMesh<PositionTexture> is used to define a mesh from a List of PositionTexture structs.
Inheritance Hierarchy
SystemObject
  Ab3d.DirectXDXResourceBase
    Ab3d.DirectXSharedDXResource
      Ab3d.DirectXSharedDXDeviceResource
        Ab3d.DirectXMeshBase
          Ab3d.DirectXSimpleMeshT

Namespace: Ab3d.DirectX
Assembly: Ab3d.DXEngine (in Ab3d.DXEngine.dll) Version: 7.0.8865.1045
Syntax
C#
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public class SimpleMesh<T> : MeshBase, 
	IDynamicVertexBufferCreator, IRayHitTestedObject, ITriangularMesh, IOctTreeMesh
where T : struct, new()

Type Parameters

T
struct that holds data for one vertex - for example Ab3d.DirectX.PositionNormalTexture

The SimpleMeshT type exposes the following members.

Constructors
Properties
 NameDescription
Public propertyArrayStride Gets or sets an integer that specifies how many VertexBufferArray elements define one Vertex. Default value is 1. See remarks for more info.
Public propertyCreateDynamicIndexBuffer Gets or sets a Boolean that specifies if the index buffer is created as a dynamic buffer. This can provide slightly better performance for cases when index buffer is updated very often. Default value is false.
Public propertyCreateDynamicVertexBuffer Gets or sets a Boolean that specifies if the vertex buffer is created as a dynamic buffer. This can provide slightly better performance for cases when vertex buffer is updated very often. Default value is false.
Public propertyIndexBufferArray Gets or sets an array that is used to define the index buffer If this property is changed, then RecreateMesh(Boolean, Boolean, Boolean) method must be called.
Public propertyOctTree Gets or sets an MeshOctTree that can be used for hit testing. The MeshOctTree is automatically generated when number of positions in this mesh is bigger or equal to the value set in MeshPositionsCountForOctTreeGeneration.
Public propertyTrianglesCount Gets the number of triangles that are used to define this mesh.
Public propertyVertexBufferArray Gets or sets an array of T structs that define the vertex buffer. If this property is changed, then RecreateMesh(Boolean, Boolean, Boolean) method must be called.
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Methods
 NameDescription
Public methodCalculateBounds Calculates and updates Bounds from the specified VertexBufferArray. The method can calculate bounds only when VertexBufferArray is of type PositionNormalTexture and PositionNormal.
Public methodCreateOctTree CreateOctTree returns a MeshOctTree that is created from the mesh defined in this SimpleMesh. This method can be used when the type of the vertex buffer is PositionNormalTexture or Vector3 (only positions). When the type of the vertex buffer is PositionNormal or PositionTexture, then vertex data are copied into positions array and an then OctTree is created. Other types of vertex buffers are not supported and will generate an exception.
Public methodGetClosestHitResult GetClosestHitResult method returns a DXRayHitTestResult with the closest triangle hit by the specified ray. When no triangle is hit, null is returned.
Public methodGetNextHitResult GetNextHitResult method continues hit testing from the previously returned hit test and returns a DXRayHitTestResult with the next hit triangle (not necessary the next closest triangle) or null if no other triangle is hit. This method can be used to get all hit results.
Public methodGetTrianglePositions GetTrianglePositions sets the 3 positions that define the triangle with the specified triangle index.
Public methodHitTest HitTest method test the triangles defined in this mesh for hitting with the specified ray. When getOnlyNextHitTest is false, then the closest hit result is returned, else the next hit result is returned. When no hit is found, null is returned.
Public methodRecreateMesh RecreateMesh disposes the existing VertexBuffers and IndexBuffer and recreates the buffers.
Public methodSortTrianglesByCameraDistance SortTrianglesByCameraDistance method sorts the triangle indices so that the triangles are sorted by camera distance - triangles that are farther away are rendered first. See remarks for more info.
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See Also