evaluate_grid()

void MayaFlux::Buffers::SDFMeshProcessor::evaluate_grid ( )

private

Definition at line 254 of file SDFMeshProcessor.cpp.

{
    const uint32_t nx = m_res_x + 1;
    const uint32_t ny = m_res_y + 1;
    const uint32_t nz = m_res_z + 1;
    const size_t total = static_cast<size_t>(nx) * ny * nz;
 
    const glm::vec3 extent = m_bounds_max - m_bounds_min;
    const glm::vec3 step {
        extent.x / static_cast<float>(m_res_x),
        extent.y / static_cast<float>(m_res_y),
        extent.z / static_cast<float>(m_res_z),
    };
 
    auto* grid = static_cast<float*>(m_grid_buf->get_mapped_ptr());
 
    MayaFlux::Parallel::for_each(std::execution::par_unseq,
        std::views::iota(0UZ, total).begin(),
        std::views::iota(0UZ, total).end(),
        [&](size_t idx) {
            const uint32_t gix = idx % nx;
            const uint32_t giy = (idx / nx) % ny;
            const uint32_t giz = idx / (static_cast<size_t>(nx) * ny);
            grid[idx] = m_field(glm::vec3(
                m_bounds_min.x + static_cast<float>(gix) * step.x,
                m_bounds_min.y + static_cast<float>(giy) * step.y,
                m_bounds_min.z + static_cast<float>(giz) * step.z));
        });
}

References m_bounds_max, m_bounds_min, m_field, m_grid_buf, m_res_x, m_res_y, and m_res_z.

Referenced by on_before_execute().

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