directx11 – How to attract the traces across the object in display house?

After selecting an object, how would I’m going about drawing the traces across the object in display house.

I do not know on what strategies to make use of. I should be pointed in the fitting course how you’ll put these traces/containers across the object after selecting the thing utilizing selecting.

I’m studying “Programming an RTS sport with direct3d”
The ebook makes use of Directx 9 and many stuff has modified since then.

That is the code pulled from the ebook, however it’s directx 9

D3DXVECTOR2 corner1[] = {D3DXVECTOR2(pmin.x, pmin.y + s), D3DXVECTOR2(pmin.x, pmin.y), D3DXVECTOR2(pmin.x + s, pmin.y)};
                    D3DXVECTOR2 corner2[] = {D3DXVECTOR2(pmax.x - s, pmin.y),
 D3DXVECTOR2(pmax.x, pmin.y), D3DXVECTOR2(pmax.x, pmin.y + s)};
                    D3DXVECTOR2 corner3[] = {D3DXVECTOR2(pmax.x, pmax.y - s), 
D3DXVECTOR2(pmax.x, pmax.y), D3DXVECTOR2(pmax.x - s, pmax.y)};
                    D3DXVECTOR2 corner4[] = {D3DXVECTOR2(pmin.x + s, pmax.y), 
D3DXVECTOR2(pmin.x, pmax.y), D3DXVECTOR2(pmin.x, pmax.y - s)};
            
    
                    ID3DXLine *line = NULL;
                    D3DXCreateLine(Gadget, &line);
                    
            
                    //Draw the 4 corners
                    line->SetWidth(2.0f);
                    line->Start();
                    line->Draw(corner1, 3, 0xffffffff); 
                    line->Draw(corner2, 3, 0xffffffff); 
                    line->Draw(corner3, 3, 0xffffffff); 
                    line->Draw(corner4, 3, 0xffffffff); 
                    line->Finish();