renamed parallel_transport to shift_object, made it use shift_method, and made it correct for Lie movement
This commit is contained in:
Zeno Rogue
parent
e1301e10bd
commit
4da63f57dc
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@ -5042,11 +5042,11 @@ EX ld wall_radar(cell *c, transmatrix T, transmatrix LPe, ld max) {
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ld step = max / 20;
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ld fixed_yshift = 0;
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for(int i=0; i<20; i++) {
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T = parallel_transport(T, ori, ztangent(-step));
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T = shift_object(T, ori, ztangent(-step), shift_method(false));
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virtualRebase(c, T);
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color_t col;
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if(isWall3(c, col) || (WDIM == 2 && GDIM == 3 && tC0(T)[2] > cgi.FLOOR)) {
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T = parallel_transport(T, ori, ztangent(step));
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T = shift_object(T, ori, ztangent(step), shift_method(false));
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step /= 2; i = 17;
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if(step < 1e-3) break;
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}
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@ -5126,7 +5126,7 @@ EX void precise_mouseover() {
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ld step = 0.2;
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cell *c = centerover;
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for(int i=0; i<100; i++) {
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apply_parallel_transport(T, ori, ztangent(step));
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apply_shift_object(T, ori, ztangent(step));
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int pd = through_wall(c, T * C0);
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if(pd != -1) {
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color_t col;
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@ -1646,17 +1646,27 @@ EX eShiftMethod shift_method(bool automatic IS(false)) {
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return smGeodesic;
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}
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EX transmatrix parallel_transport(const transmatrix Position, const transmatrix& ori, const hyperpoint direction) {
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if(nonisotropic) return nisot::parallel_transport(Position, direction);
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else if(gproduct) {
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hyperpoint h = product::direct_exp(ori * direction);
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return Position * rgpushxto0(h);
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EX transmatrix shift_object(const transmatrix Position, const transmatrix& ori, const hyperpoint direction, eShiftMethod sm IS(shift_method(true))) {
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switch(sm) {
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case smGeodesic:
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return nisot::parallel_transport(Position, direction);
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case smLie:
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return nisot::lie_transport(Position, direction);
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case smProduct: {
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hyperpoint h = product::direct_exp(ori * direction);
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return Position * rgpushxto0(h);
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}
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case smIsometric: {
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return Position * rgpushxto0(direct_exp(direction));
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}
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case smEmbedded: {
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throw hr_exception("not implemented");
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}
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}
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else return Position * rgpushxto0(direct_exp(direction));
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}
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EX void apply_parallel_transport(transmatrix& Position, const transmatrix orientation, const hyperpoint direction) {
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Position = parallel_transport(Position, orientation, direction);
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EX void apply_shift_object(transmatrix& Position, const transmatrix orientation, const hyperpoint direction, eShiftMethod sm IS(shift_method(true))) {
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Position = shift_object(Position, orientation, direction, sm);
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}
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EX void rotate_object(transmatrix& Position, transmatrix& orientation, transmatrix R) {
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@ -2846,10 +2846,16 @@ EX namespace nisot {
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EX transmatrix parallel_transport(const transmatrix Position, const hyperpoint direction) {
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auto P = Position;
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nisot::fixmatrix(P);
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if(!geodesic_movement) return eupush(Position * translate(-direction) * inverse(Position) * C0, -1) * Position;
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return parallel_transport_bare(P, direction);
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}
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EX transmatrix lie_transport(const transmatrix Position, const hyperpoint direction) {
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transmatrix pshift = eupush( tC0(Position) );
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transmatrix irot = iso_inverse(pshift) * Position;
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hyperpoint tH = lie_exp(irot * direction);
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return pshift * eupush(tH) * irot;
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}
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EX transmatrix spin_towards(const transmatrix Position, const hyperpoint goal, flagtype prec IS(pNORMAL)) {
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hyperpoint at = tC0(Position);
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20
shmup.cpp
20
shmup.cpp
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@ -1059,7 +1059,7 @@ void movePlayer(monster *m, int delta) {
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playergoturn[cpid] = 0;
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if(igo) { go = false; break; }
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ld r = hypot_d(WDIM, avg_inertia);
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apply_parallel_transport(nat.T, m->ori, lrspintox(avg_inertia) * xtangent(r * delta));
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apply_shift_object(nat.T, m->ori, lrspintox(avg_inertia) * xtangent(r * delta));
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if(WDIM == 3) rotate_object(nat.T, m->ori, cspin(0, 2, playerturn[cpid]) * cspin(1, 2, playerturny[cpid]));
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m->vel = r * (600/SCALE);
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}
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@ -1070,7 +1070,7 @@ void movePlayer(monster *m, int delta) {
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playersmallspin[cpid] = cspin(0, 1, fspin) * cspin(2, 0, igospan[igo]);
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if(fspin < 360) igo--; else fspin = 0;
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}
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nat.T = parallel_transport(nat1.T, m->ori, playersmallspin[cpid] * point3(playerstrafe[cpid], 0, playergo[cpid]));
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nat.T = shift_object(nat1.T, m->ori, playersmallspin[cpid] * point3(playerstrafe[cpid], 0, playergo[cpid]));
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rotate_object(nat.T, m->ori, cspin(0, 2, playerturn[cpid]) * cspin(1, 2, playerturny[cpid]));
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m->inertia[0] = playerstrafe[cpid] / delta;
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m->inertia[1] = 0;
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@ -1078,7 +1078,7 @@ void movePlayer(monster *m, int delta) {
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}
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else if(playergo[cpid]) {
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playergoturn[cpid] = igospan[igo]+godir[cpid];
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nat.T = parallel_transport(nat1.T, m->ori, spin(playergoturn[cpid]) * xtangent(playergo[cpid]));
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nat.T = shift_object(nat1.T, m->ori, spin(playergoturn[cpid]) * xtangent(playergo[cpid]));
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m->inertia = spin(playergoturn[cpid]) * xtangent(playergo[cpid] / delta);
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}
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@ -1168,7 +1168,7 @@ void movePlayer(monster *m, int delta) {
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int i0 = i;
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for(int a=0; a<3; a++) v[a] = (i0 % 3) - 1, i0 /= 3;
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v = v * .1 / hypot_d(3, v);
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shiftmatrix T1 = (i == 13) ? nat : shiftless(parallel_transport(nat.T, m->ori, v), nat.shift);
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shiftmatrix T1 = (i == 13) ? nat : shiftless(shift_object(nat.T, m->ori, v), nat.shift);
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cell *c3 = c2;
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while(true) {
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cell *c4 = findbaseAround(tC0(T1), c3, 1);
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@ -1478,7 +1478,7 @@ void moveMimic(monster *m) {
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// no need to care about Mirror images, as they already have their 'at' matrix reversed :|
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if(WDIM == 3) {
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nat.T = parallel_transport(nat.T, m->ori, playersmallspin[cpid] * point3(playerstrafe[cpid], 0, playergo[cpid]));
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nat.T = shift_object(nat.T, m->ori, playersmallspin[cpid] * point3(playerstrafe[cpid], 0, playergo[cpid]));
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rotate_object(nat.T, m->ori, cspin(0, 2, playerturn[cpid]) * cspin(1, 2, playerturny[cpid]));
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}
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else
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@ -1711,10 +1711,10 @@ void moveBullet(monster *m, int delta) {
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m->dead = true;
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if(inertia_based) {
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nat.T = parallel_transport(nat.T, m->ori, m->inertia * delta);
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nat.T = shift_object(nat.T, m->ori, m->inertia * delta);
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}
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else
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nat.T = parallel_transport(nat.T, m->ori, fronttangent(delta * SCALE * m->vel / speedfactor()));
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nat.T = shift_object(nat.T, m->ori, fronttangent(delta * SCALE * m->vel / speedfactor()));
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cell *c2 = m->findbase(nat, fake::split() ? 10 : 1);
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if(m->parent && isPlayer(m->parent) && markOrb(itOrbLava) && c2 != m->base && !isPlayerOn(m->base))
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@ -2217,14 +2217,14 @@ void moveMonster(monster *m, int delta) {
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if(inertia_based) {
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if(igo) return;
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nat.T = parallel_transport(nat.T, m->ori, m->inertia * delta);
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nat.T = shift_object(nat.T, m->ori, m->inertia * delta);
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}
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else if(WDIM == 3 && igo) {
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ld fspin = rand() % 1000;
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nat.T = parallel_transport(nat0.T, m->ori, cspin(1,2,fspin) * spin(igospan[igo]) * xtangent(step));
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nat.T = shift_object(nat0.T, m->ori, cspin(1,2,fspin) * spin(igospan[igo]) * xtangent(step));
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}
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else {
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nat.T = parallel_transport(nat0.T, m->ori, spin(igospan[igo]) * xtangent(step));
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nat.T = shift_object(nat0.T, m->ori, spin(igospan[igo]) * xtangent(step));
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}
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if(m->type != moRagingBull && !peace::on)
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