insert_flat()

void MayaFlux::Kakshya::MeshInsertion::insert_flat	(	std::span< const uint8_t >	vertex_bytes,
		std::span< const uint32_t >	index_data,
		const VertexLayout &	layout
	)

Insert a single flat mesh (no submesh tracking).

Replaces any existing content in both variants. layout must have stride_bytes > 0. vertex_bytes.size() must be a multiple of layout.stride_bytes. index_data.size() must be a multiple of 3.

Parameters

vertex_bytes	Raw interleaved vertex data.
index_data	Triangle index list.
layout	Vertex attribute layout; stride_bytes must be set.

Definition at line 59 of file MeshInsertion.cpp.

{
    if (layout.stride_bytes == 0) {
        MF_ERROR(Journal::Component::Kakshya, Journal::Context::Runtime,
            "MeshInsertion::insert_flat: layout stride_bytes is zero");
        return;
    }
    if (vertex_bytes.size() % layout.stride_bytes != 0) {
        MF_ERROR(Journal::Component::Kakshya, Journal::Context::Runtime,
            "MeshInsertion::insert_flat: vertex_bytes {} not a multiple of stride {}",
            vertex_bytes.size(), layout.stride_bytes);
        return;
    }
    if (index_data.size() % 3 != 0) {
        MF_ERROR(Journal::Component::Kakshya, Journal::Context::Runtime,
            "MeshInsertion::insert_flat: index count {} is not a multiple of 3",
            index_data.size());
        return;
    }
 
    m_vertex_variant = std::vector<uint8_t>(vertex_bytes.begin(), vertex_bytes.end());
    m_index_variant = std::vector<uint32_t>(index_data.begin(), index_data.end());
 
    m_layout = layout;
    m_vertex_count = static_cast<uint32_t>(vertex_bytes.size() / layout.stride_bytes);
    m_index_count = static_cast<uint32_t>(index_data.size());
    m_layout.vertex_count = m_vertex_count;
    m_layout_set = true;
    m_submeshes = std::nullopt;
 
    MF_DEBUG(Journal::Component::Kakshya, Journal::Context::Runtime,
        "MeshInsertion::insert_flat: {} vertices, {} indices ({} faces)",
        m_vertex_count, m_index_count, m_index_count / 3);
}

References MayaFlux::Journal::Kakshya, m_index_count, m_index_variant, m_layout, m_layout_set, m_submeshes, m_vertex_count, m_vertex_variant, MF_DEBUG, MF_ERROR, MayaFlux::Journal::Runtime, MayaFlux::Kakshya::VertexLayout::stride_bytes, and MayaFlux::Kakshya::VertexLayout::vertex_count.

Referenced by MayaFlux::IO::ModelReader::extract_single_mesh().

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