Method InitBox

Shadows/SampleFramework11/Model.cpp:150–299

Initializes the mesh as a box

// Initializes the mesh as a box
void Mesh::InitBox(ID3D11Device* device, const Float3& dimensions, const Float3& position,
                   const Quaternion& orientation, uint32 materialIdx)
{
    const uint64 NumBoxVerts = 24;
    const uint64 NumBoxIndices = 36;

    std::vector<Vertex> boxVerts(NumBoxVerts);
    std::vector<uint16> boxIndices(NumBoxIndices, 0);

    uint64 vIdx = 0;

    // Top
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, 1.0f, 1.0f), Float3(0.0f, 1.0f, 0.0f), Float2(0.0f, 0.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, 0.0f, -1.0f));
    boxVerts[vIdx++] = Vertex(Float3(1.0f, 1.0f, 1.0f), Float3(0.0f, 1.0f, 0.0f), Float2(1.0f, 0.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, 0.0f, -1.0f));
    boxVerts[vIdx++] = Vertex(Float3(1.0f, 1.0f, -1.0f), Float3(0.0f, 1.0f, 0.0f), Float2(1.0f, 1.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, 0.0f, -1.0f));
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, 1.0f, -1.0f), Float3(0.0f, 1.0f, 0.0f), Float2(0.0f, 1.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, 0.0f, -1.0f));

    // Bottom
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, -1.0f, -1.0f), Float3(0.0f, -1.0f, 0.0f), Float2(0.0f, 0.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, 0.0f, 1.0f));
    boxVerts[vIdx++] = Vertex(Float3(1.0f, -1.0f, -1.0f), Float3(0.0f, -1.0f, 0.0f), Float2(1.0f, 0.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, 0.0f, 1.0f));
    boxVerts[vIdx++] = Vertex(Float3(1.0f, -1.0f, 1.0f), Float3(0.0f, -1.0f, 0.0f), Float2(1.0f, 1.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, 0.0f, 1.0f));
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, -1.0f, 1.0f), Float3(0.0f, -1.0f, 0.0f), Float2(0.0f, 1.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, 0.0f, 1.0f));

    // Front
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, 1.0f, -1.0f), Float3(0.0f, 0.0f, -1.0f), Float2(0.0f, 0.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(1.0f, 1.0f, -1.0f), Float3(0.0f, 0.0f, -1.0f), Float2(1.0f, 0.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(1.0f, -1.0f, -1.0f), Float3(0.0f, 0.0f, -1.0f), Float2(1.0f, 1.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, -1.0f, -1.0f), Float3(0.0f, 0.0f, -1.0f), Float2(0.0f, 1.0f), Float3(1.0f, 0.0f, 0.0f), Float3(0.0f, -1.0f, 0.0f));

    // Back
    boxVerts[vIdx++] = Vertex(Float3(1.0f, 1.0f, 1.0f), Float3(0.0f, 0.0f, 1.0f), Float2(0.0f, 0.0f), Float3(-1.0f, 0.0f, 0.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, 1.0f, 1.0f), Float3(0.0f, 0.0f, 1.0f), Float2(1.0f, 0.0f), Float3(-1.0f, 0.0f, 0.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, -1.0f, 1.0f), Float3(0.0f, 0.0f, 1.0f), Float2(1.0f, 1.0f), Float3(-1.0f, 0.0f, 0.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(1.0f, -1.0f, 1.0f), Float3(0.0f, 0.0f, 1.0f), Float2(0.0f, 1.0f), Float3(-1.0f, 0.0f, 0.0f), Float3(0.0f, -1.0f, 0.0f));

    // Left
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, 1.0f, 1.0f), Float3(-1.0f, 0.0f, 0.0f), Float2(0.0f, 0.0f), Float3(0.0f, 0.0f, -1.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, 1.0f, -1.0f), Float3(-1.0f, 0.0f, 0.0f), Float2(1.0f, 0.0f), Float3(0.0f, 0.0f, -1.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, -1.0f, -1.0f), Float3(-1.0f, 0.0f, 0.0f), Float2(1.0f, 1.0f), Float3(0.0f, 0.0f, -1.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(-1.0f, -1.0f, 1.0f), Float3(-1.0f, 0.0f, 0.0f), Float2(0.0f, 1.0f), Float3(0.0f, 0.0f, -1.0f), Float3(0.0f, -1.0f, 0.0f));

    // Right
    boxVerts[vIdx++] = Vertex(Float3(1.0f, 1.0f, -1.0f), Float3(1.0f, 0.0f, 0.0f), Float2(0.0f, 0.0f), Float3(0.0f, 0.0f, 1.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(1.0f, 1.0f, 1.0f), Float3(1.0f, 0.0f, 0.0f), Float2(1.0f, 0.0f), Float3(0.0f, 0.0f, 1.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(1.0f, -1.0f, 1.0f), Float3(1.0f, 0.0f, 0.0f), Float2(1.0f, 1.0f), Float3(0.0f, 0.0f, 1.0f), Float3(0.0f, -1.0f, 0.0f));
    boxVerts[vIdx++] = Vertex(Float3(1.0f, -1.0f, -1.0f), Float3(1.0f, 0.0f, 0.0f), Float2(0.0f, 1.0f), Float3(0.0f, 0.0f, 1.0f), Float3(0.0f, -1.0f, 0.0f));

    for(uint64 i = 0; i < NumBoxVerts; ++i)
        boxVerts[i].Transform(position, dimensions * 0.5f, orientation);

    uint64 iIdx = 0;

    // Top
    boxIndices[iIdx++] = 0;
    boxIndices[iIdx++] = 1;
    boxIndices[iIdx++] = 2;
    boxIndices[iIdx++] = 2;
    boxIndices[iIdx++] = 3;