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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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11
racing.cpp
View File

@@ -778,7 +778,7 @@ EX bool set_view() {
transmatrix at = ypush(-vid.yshift) * unshift(ggmatrix(who->base)) * who->at;
if(racing::player_relative || quotient || (kite::in() && GDIM == 3)) {
View = inverse(at) * View;
View = iso_inverse(at) * View;
}
else {
int z = get_info(who->base).completion;
@@ -787,14 +787,15 @@ EX bool set_view() {
cell *c2 = racing::track[min(z+steps, isize(racing::track)-1)];
transmatrix T1 = ypush(-vid.yshift) * unshift(ggmatrix(c1));
transmatrix T2 = ypush(-vid.yshift) * unshift(ggmatrix(c2));
transmatrix T = spintox(inverse(T1) * T2 * C0);
hyperpoint h = T * inverse(T1) * at * C0;
transmatrix iT1 = iso_inverse(T1);
transmatrix T = spintox(iT1 * T2 * C0);
hyperpoint h = T * iT1 * at * C0;
ld y = GDIM == 2 ? asin_auto(h[1]) : asin_auto(hypot(h[1], h[2]));
ld x = asin_auto(h[0] / cos_auto(y));
x += race_advance;
if(GDIM == 3 && race_advance == 0 && pmodel == mdPerspective) race_advance = -1;
transmatrix Z = T1 * inverse(T) * xpush(x);
View = inverse(Z) * View;
transmatrix Z = T1 * iso_inverse(T) * xpush(x);
View = iso_inverse(Z) * View;
if(GDIM == 3) View = cspin(2, 0, M_PI/2) * View;
fixmatrix(View);
}