Class BlockInfo
- Namespace
- easyar
The model obtained from dense reconstruction is represented by a triangular mesh, called a mesh. Since the mesh is frequently updated, to ensure efficiency, the entire reconstructed model's mesh is split into many mesh blocks. A mesh block consists of a cube with a side length of approximately 1 meter, containing elements such as vertex and index. BlockInfo is used to describe the content of a mesh block. The (x,y,z) is the index of the mesh block. Multiplying (x,y,z) by the physical size of each mesh block gives the origin coordinates of this mesh block in the world coordinate system. The parts to be displayed can be pre-filtered based on the world position of the mesh block to save rendering time.
Record BlockInfoProperties
x
x in the mesh block index (x,y,z)
int xint xpublic int xpublic Int x@property (nonatomic) int xpublic var x: Int32public int xy
y in the mesh block index (x,y,z)
int yint ypublic int ypublic Int y@property (nonatomic) int ypublic var y: Int32public int yz
z in the mesh block index (x,y,z)
int zint zpublic int zpublic Int z@property (nonatomic) int zpublic var z: Int32public int znumOfVertex
Number of vertices in a mesh block
int numOfVertexint numOfVertexpublic int numOfVertexpublic Int numOfVertex@property (nonatomic) int numOfVertexpublic var numOfVertex: Int32public int numOfVertexstartPointOfVertex
The starting position of vertex data in the vertex buffer, indicating which vertex starts belonging to the current mesh block. It is not the offset in bytes; the offset in bytes for the starting position is startPointOfVertex * 3 * 4 bytes.
int startPointOfVertexint startPointOfVertexpublic int startPointOfVertexpublic Int startPointOfVertex@property (nonatomic) int startPointOfVertexpublic var startPointOfVertex: Int32public int startPointOfVertexnumOfIndex
Number of indices in a mesh block, where every 3 consecutive vertices form a triangular face.
int numOfIndexint numOfIndexpublic int numOfIndexpublic Int numOfIndex@property (nonatomic) int numOfIndexpublic var numOfIndex: Int32public int numOfIndexstartPointOfIndex
Similar to startPointOfVertex, the starting position of index data in the index buffer indicates which index starts belonging to the current mesh block. It is not the offset in bytes; the offset in bytes for the starting position is startPointOfIndex * 3 * 4 bytes.
int startPointOfIndexint startPointOfIndexpublic int startPointOfIndexpublic Int startPointOfIndex@property (nonatomic) int startPointOfIndexpublic var startPointOfIndex: Int32public int startPointOfIndexversion
The number of updates for the current mesh block; a larger version indicates more updates. If the version of a mesh block increases after calling updateSceneMesh, it indicates that its content has changed.