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fixed the spin functions in hyp_in_solnih and euc_in_sl2

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Zeno Rogue
2023-01-08 03:10:48 +01:00
parent 6259815f7f
commit 8118ecd4f3
1 changed files with 4 additions and 1 deletions
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5
hyperpoint.cpp
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@@ -710,6 +710,7 @@ EX transmatrix cspin180(int a, int b) {
/** rotate by alpha degrees in the XY plane */
EX transmatrix spin(ld alpha) {
if(embedded_plane && geom3::euc_in_product()) return Id;
if(embedded_plane && geom3::euc_in_sl2()) return Id; // just looks weird...
if(embedded_plane && geom3::euc_vertical()) return cspin(0, 2, alpha);
if(embedded_plane && geom3::hyp_in_solnih()) return cspin(1, 2, alpha);
return cspin(0, 1, alpha);
@@ -1204,6 +1205,7 @@ EX transmatrix rspintox(const hyperpoint& H) {
EX transmatrix lspintox(const hyperpoint& H) {
if(geom3::euc_in_product()) return Id;
if(geom3::euc_in_sl2()) return Id;
if(geom3::euc_vertical()) return spintoc(H, 0, 2);
if(geom3::hyp_in_solnih()) return spintoc(H, 1, 2);
if(WDIM == 2 || gproduct) return spintoc(H, 0, 1);
@@ -1213,8 +1215,9 @@ EX transmatrix lspintox(const hyperpoint& H) {
EX transmatrix lrspintox(const hyperpoint& H) {
if(geom3::euc_in_product()) return Id;
if(geom3::euc_in_sl2()) return Id;
if(geom3::euc_vertical()) return rspintoc(H, 0, 2);
if(geom3::hyp_in_solnih()) return rspintoc(H, 1, 2);
if(geom3::hyp_in_solnih()) return rspintoc(H, 2, 1);
if(WDIM == 2 || gproduct) return rspintoc(H, 0, 1);
transmatrix T1 = spintoc(H, 0, 1);
return rspintoc(H, 0, 1) * rspintoc(T1*H, 0, 2);