Plot 2. Error as function of θ and #polygons

d=1.5;k=5; d=4;r=1;
pa=Plot3D[-180/Pi PolygonSimpErr[n,r,d,θ,k],{θ,0,θm},{n,nmin,nmax}
];
pb=Plot3D[-180/Pi VptDepSimpErr[n,r,d,θ,k],{θ,0,θm},{n,nmin,nmax}
];
pc=Plot3D[-180/Pi SimpleImposterErr[n,r,d,θ,k],{θ,0,θm},{n,nmin,nmax}
];
pd=Plot3D[-180/Pi MeshedImposterErr[n,r,d,θ,k],{θ,0,θm},{n,nmin,nmax}
];
pe=Plot3D[-180/Pi IwDErr[n,r,d,θ,k],{θ,0,θm},{n,nmin,nmax}
];

Collected plot

Note that all imposters have 0 distortion at θ=0, while polygon models dont reach 0.
This is purely theoretical, assuming infinity resolution bitmaps on the imposters and
their images generated with perfect virtual models (infinite number of triangles?).
Later we will deal with subsampling issues.
Furthermore, all practical polygon models never reach 0 distortion because it can always be improved by adding more - properly sampled- points to the mesh.

Old and new SimpleImposter functions are very similar