Method SetObject

GTE/Graphics/PointController.cpp:41–93

}

void PointController::SetObject(ControlledObject* object)
{
    mPointLinearSpeed.clear();
    mPointAngularSpeed.clear();
    mPointLinearAxis.clear();
    mPointAngularAxis.clear();

    auto visual = dynamic_cast<Visual*>(object);
    LogAssert(visual != nullptr, "Object is not of type Visual.");

    auto const& ibuffer = visual->GetIndexBuffer();
    uint32_t primitiveType = ibuffer->GetPrimitiveType();
    LogAssert(primitiveType == IP_POLYPOINT, "Geometric primitive must be points.");

    // The vertex buffer for a Visual controlled by a PointController must
    // have 3-tuple or 4-tuple float-valued position that occurs at the
    // beginning (offset 0) of the vertex structure.
    auto const& vbuffer = visual->GetVertexBuffer();
    VertexFormat vformat = vbuffer->GetFormat();
    int32_t index = vformat.GetIndex(VASemantic::POSITION, 0);
    LogAssert(index >= 0, "Vertex format does not have VASemantic::POSITION.");

    uint32_t type = vformat.GetType(index);
    LogAssert(type == DF_R32G32B32_FLOAT || type == DF_R32G32B32A32_FLOAT, "Invalid position type.");

    uint32_t offset = vformat.GetOffset(index);
    LogAssert(offset == 0, "Position offset must be 0.");

    // If the vertex buffer for a Visual controlled by a PointController has
    // normal vectors, they must be 3-tuple or 4-tuple float-valued that
    // occurs at an offset >= sizeof(Vector3<float>>).
    index = vformat.GetIndex(VASemantic::NORMAL, 0);
    if (index >= 0)
    {
        type = vformat.GetType(index);
        LogAssert(type == DF_R32G32B32_FLOAT || type == DF_R32G32B32A32_FLOAT, "Invalid normal type.");
    }

    size_t numPoints = static_cast<size_t>(vbuffer->GetNumElements());
    mPointLinearSpeed.resize(numPoints);
    mPointAngularSpeed.resize(numPoints);
    mPointLinearAxis.resize(numPoints);
    mPointAngularAxis.resize(numPoints);
    for (size_t i = 0; i < numPoints; ++i)
    {
        mPointLinearSpeed[i] = 0.0f;
        mPointAngularSpeed[i] = 0.0f;
        mPointLinearAxis[i] = Vector3<float>::Unit(2);
        mPointAngularAxis[i] = Vector3<float>::Unit(2);
    }

    Controller::SetObject(object);
}

void PointController::UpdateSystemMotion(float ctrlTime)
{