Method CreateScene

GTE/Samples/SceneGraphs/Picking/PickingWindow3.cpp:87–165

}

void PickingWindow3::CreateScene()
{
    std::string path = mEnvironment.GetPath("Checkerboard.png");
    std::shared_ptr<Texture2> texture = WICFileIO::Load(path, false);

    mScene = std::make_shared<Node>();

    VertexFormat vformat0;
    vformat0.Bind(VASemantic::POSITION, DF_R32G32B32_FLOAT, 0);
    vformat0.Bind(VASemantic::TEXCOORD, DF_R32G32_FLOAT, 0);

    // The torus and dodecahedron are created by the mesh factory in which
    // the 'visual' model bounds are computed.  The points and segments
    // primitives are created explicitly here, so we need to compute their
    // model bounds to be used by the picking system.
    MeshFactory mf;
    mf.SetVertexFormat(vformat0);

    mTorus = mf.CreateTorus(16, 16, 4.0f, 1.0f);
    auto effect = std::make_shared<Texture2Effect>(mProgramFactory, texture,
        SamplerState::Filter::MIN_L_MAG_L_MIP_P, SamplerState::Mode::CLAMP, SamplerState::Mode::CLAMP);
    mTorus->SetEffect(effect);
    mPVWMatrices.Subscribe(mTorus->worldTransform, effect->GetPVWMatrixConstant());
    mScene->AttachChild(mTorus);

    mDodecahedron = mf.CreateDodecahedron();
    effect = std::make_shared<Texture2Effect>(mProgramFactory, texture,
        SamplerState::Filter::MIN_L_MAG_L_MIP_P, SamplerState::Mode::CLAMP,
        SamplerState::Mode::CLAMP);
    mDodecahedron->SetEffect(effect);
    mPVWMatrices.Subscribe(mDodecahedron->worldTransform, effect->GetPVWMatrixConstant());
    mScene->AttachChild(mDodecahedron);

    VertexFormat vformat1;
    vformat1.Bind(VASemantic::POSITION, DF_R32G32B32_FLOAT, 0);
    auto vbuffer = std::make_shared<VertexBuffer>(vformat1, 4);
    auto* vertices = vbuffer->Get<Vector3<float>>();
    vertices[0] = { 1.0f, 1.0f, 4.0f };
    vertices[1] = { 1.0f, 2.0f, 5.0f };
    vertices[2] = { 2.0f, 2.0f, 6.0f };
    vertices[3] = { 2.0f, 1.0f, 7.0f };
    auto ibuffer = std::make_shared<IndexBuffer>(IP_POLYPOINT, 4);
    auto cceffect = std::make_shared<ConstantColorEffect>(mProgramFactory,
        Vector4<float>{ 0.5f, 0.0f, 0.0f, 1.0f });
    mPoints = std::make_shared<Visual>(vbuffer, ibuffer, cceffect);
    mPoints->UpdateModelBound();
    mPVWMatrices.Subscribe(mPoints->worldTransform, cceffect->GetPVWMatrixConstant());
    mScene->AttachChild(mPoints);

    vbuffer = std::make_shared<VertexBuffer>(vformat1, 4);
    vertices = vbuffer->Get<Vector3<float>>();
    vertices[0] = { -1.0f, -1.0f, 4.0f };
    vertices[1] = { -1.0f, -2.0f, 5.0f };
    vertices[2] = { -2.0f, -1.0f, 6.0f };
    vertices[3] = { -2.0f, -2.0f, 7.0f };
    ibuffer = std::make_shared<IndexBuffer>(IP_POLYSEGMENT_CONTIGUOUS, 3, sizeof(int32_t));
    ibuffer->SetSegment(0, 0, 1);
    ibuffer->SetSegment(1, 1, 2);