OnCreatePack()

bool Spices::SpherePack::OnCreatePack ( bool isCreateBuffer = true )

overridevirtual

This interface is used for build specific mesh pack data.

Parameters

[in]

isCreateBuffer

Whether it needs to create buffer.

Returns

Returns true if Create Pack successfully.

Reimplemented from Spices::MeshPack.

Definition at line 563 of file MeshPack.cpp.

    {
        SPICES_PROFILE_ZONE;
 
        if (MeshPack::OnCreatePack(isCreateBuffer)) return true;
 
        for (uint32_t i = 0; i < m_Rows; i++)
        {
            const float rowRamp = i / static_cast<float>(m_Rows - 1) * 180.0f; // 0 ~ 180
 
            for (uint32_t j = 0; j < m_Columns; j++)
            {
                const uint32_t vtIndex = i * m_Columns + j;
                const float colRamp = j * 360.0f / static_cast<float>(m_Columns - 1); // 0 ~ 360
 
                glm::vec3 position{ glm::sin(glm::radians(rowRamp)) * glm::sin(glm::radians(colRamp)), glm::cos(glm::radians(rowRamp)), glm::sin(glm::radians(rowRamp)) * glm::cos(glm::radians(colRamp)) };
 
                m_MeshResource.positions.attributes->push_back(position);
                m_MeshResource.normals  .attributes->push_back(glm::normalize(position));
                m_MeshResource.colors   .attributes->push_back({ 1.0f, 1.0f, 1.0f });
                m_MeshResource.texCoords.attributes->push_back({ j / static_cast<float>(m_Columns - 1), i / static_cast<float>(m_Rows - 1) });
 
                m_MeshResource.vertices .attributes->push_back(glm::uvec4(vtIndex));
            }
        }
        
        for (uint32_t i = 0; i < m_Rows - 1; i++)
        {
            for (uint32_t j = 0; j < m_Columns - 1; j++)
            {
                const uint32_t vtIndex = i * m_Columns + j;
 
                m_MeshResource.primitiveVertices.attributes->push_back({ vtIndex, vtIndex + 1, vtIndex + m_Columns + 1 });
                m_MeshResource.primitiveVertices.attributes->push_back({ vtIndex + m_Columns + 1, vtIndex + m_Columns, vtIndex });
            }
        }
 
        if (isCreateBuffer)
        {
            MeshProcessor::GenerateMeshLodClusterHierarchy(this);
            CreateBuffer();
        }
 
        return true;
    }

References Spices::MeshPack::CreateBuffer(), Spices::MeshProcessor::GenerateMeshLodClusterHierarchy(), m_Columns, m_Rows, and Spices::MeshPack::OnCreatePack().