a3d::MeshElement Class Reference

Owns the vertex and optional index data for one mesh primitive. More...

#include <a3d/mesh/MeshElement.h>

Inheritance diagram for a3d::MeshElement:

Public Member Functions
	MeshElement (VertexLayout layout, std::span< const std::byte > vertexBytes, uint32_t vertexCount, uint16_t vertexStride, PrimitiveTopology topology, IndexFormat indexFormat, std::span< const std::byte > indexBytes, uint32_t indexCount)
	Creates a MeshElement by copying the supplied vertex and index data. More...

Detailed Description

Owns the vertex and optional index data for one mesh primitive.

MeshElement corresponds roughly to what many 3D APIs call a "submesh" or "mesh primitive." SceneKit calls the analogous concept a "geometry element," while glTF uses the term "mesh primitive."

Definition at line 43 of file MeshElement.h.

Constructor & Destructor Documentation

MeshElement()

a3d::MeshElement::MeshElement	(	VertexLayout	layout,
		std::span< const std::byte >	vertexBytes,
		uint32_t	vertexCount,
		uint16_t	vertexStride,
		PrimitiveTopology	topology,
		IndexFormat	indexFormat,
		std::span< const std::byte >	indexBytes,
		uint32_t	indexCount
	)

Creates a MeshElement by copying the supplied vertex and index data.

The input byte spans do not need to outlive the MeshElement. For a non-indexed element, use IndexFormat::None with an index count of zero and an empty index span.

Parameters

layout	layout of each vertex record.
vertexBytes	source bytes containing at least vertexCount records.
vertexCount	number of vertices.
vertexStride	size in bytes of one vertex record.
topology	primitive topology represented by the data.
indexFormat	format of each index, or IndexFormat::None for non-indexed geometry.
indexBytes	source index bytes for indexed geometry.
indexCount	number of indices for indexed geometry.

Exceptions

std::runtime_error

if a supplied byte span is too small for its declared count and stride.

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The documentation for this class was generated from the following file:

• a3d/mesh/MeshElement.h