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optimized inverses

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Zeno Rogue
2020-09-16 05:57:05 +02:00
parent cea3da31fc
commit e26f8f5a5b
16 changed files with 138 additions and 85 deletions
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6
shmup.cpp
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@@ -197,11 +197,11 @@ void monster::rebasePat(const shiftmatrix& new_pat, cell *c2) {
else {
auto T = calc_relative_matrix(c2, base, tC0(at));
base = c2;
at = inverse(T) * at;
at = iso_inverse(T) * at;
}
}
if(multi::players == 1 && this == shmup::pc[0] && !eqmatrix(old_at, at))
current_display->which_copy = current_display->which_copy * old_at * inverse(at);
current_display->which_copy = current_display->which_copy * old_at * iso_inverse(at);
return;
}
if(multi::players == 1 && this == shmup::pc[0])
@@ -1354,7 +1354,7 @@ bool reflectmatrix(shiftmatrix& M, cell *c1, cell *c2, bool onlypos) {
ld d = hdist0(tC0(H));
transmatrix T = xpush(-d/2) * S * inverse_shift(gmatrix[c1], M);
if(onlypos && tC0(T)[0] < 0) return false;
M = gmatrix[c1] * inverse(S) * xpush(d/2) * MirrorX * T;
M = gmatrix[c1] * iso_inverse(S) * xpush(d/2) * MirrorX * T;
return true;
}