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nilv:: geodesic wall surfaces
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@ -526,6 +526,13 @@ namespace nilv {
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}
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};
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hyperpoint on_geodesic(hyperpoint s0, hyperpoint s1, ld x) {
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using namespace hyperpoint_vec;
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hyperpoint local = inverse(nisot::translate(s0)) * s1;
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hyperpoint h = get_inverse_exp(local, 100);
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return nisot::translate(s0) * formula_exp(h * x);
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}
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}
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namespace nisot {
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@ -717,6 +717,8 @@ void geometry_information::make_wall(int id, vector<hyperpoint> vertices, vector
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hyperpoint v2 = vertices[(a+1)%n] - center;
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texture_order([&] (ld x, ld y) {
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hyperpoint h = center + v1 * x + v2 * y;
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if(nil && (x || y))
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h = nilv::on_geodesic(center, nilv::on_geodesic(v1+center, v2+center, y / (x+y)), x + y);
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if(sol || !binarytiling) { hpcpush(normalize(h)); return; }
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hyperpoint res = binary::parabolic3(h[0], h[1]) * xpush0(yy*h[2]);
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hpcpush(res);
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@ -728,6 +730,8 @@ void geometry_information::make_wall(int id, vector<hyperpoint> vertices, vector
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int STEP = vid.texture_step;
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for(int a=0; a<n; a++) for(int y=0; y<STEP; y++) {
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hyperpoint h = (vertices[a] * (STEP-y) + vertices[(a+1)%n] * y)/STEP;
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if(nil)
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h = nilv::on_geodesic(vertices[a], vertices[(a+1)%n], y * 1. / STEP);
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if(sol || !binarytiling) { hpcpush(normalize(h)); continue; }
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hyperpoint res = binary::parabolic3(h[0], h[1]) * xpush0(yy*h[2]);
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hpcpush(res);
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