// Hyperbolic Rogue -- hyperbolic graphics // Copyright (C) 2011-2019 Zeno Rogue, see 'hyper.cpp' for details /** \file hypgraph.cpp * \brief mapping hyperpoints to the screen, and related functions */ #include "hyper.h" namespace hr { ld ghx, ghy, ghgx, ghgy; hyperpoint ghpm = C0; #if HDR inline bool sphereflipped() { return sphere && vid.alpha > 1.1 && GDIM == 3; } #endif void ghcheck(hyperpoint &ret, const hyperpoint &H) { if(hypot(ret[0]-ghx, ret[1]-ghy) < hypot(ghgx-ghx, ghgy-ghy)) { ghpm = H; ghgx = ret[0]; ghgy = ret[1]; } } EX void camrotate(ld& hx, ld& hy) { ld cam = vid.camera_angle * degree; GLfloat cc = cos(cam); GLfloat ss = sin(cam); ld ux = hx, uy = hy * cc + ss, uz = cc - ss * hy; hx = ux / uz, hy = uy / uz; } EX bool non_spatial_model() { if(among(pmodel, mdRotatedHyperboles, mdJoukowsky, mdJoukowskyInverted, mdPolygonal, mdPolynomial)) return true; if(pmodel == mdSpiral && euclid) return true; return pmodel && vid.consider_shader_projection && (get_shader_flags() & SF_DIRECT); } EX hyperpoint perspective_to_space(hyperpoint h, ld alpha IS(vid.alpha), eGeometryClass gc IS(ginf[geometry].cclass)) { ld hx = h[0], hy = h[1]; if(gc == gcEuclid) return hpxy(hx * (1 + alpha), hy * (1 + alpha)); ld hr = hx*hx+hy*hy; if(hr > .9999 && gc == gcHyperbolic) return Hypc; ld A, B, C; ld curv = gc == gcSphere ? 1 : -1; A = 1+curv*hr; B = 2*hr*alpha*-curv; C = 1 - curv*hr*alpha*alpha; B /= A; C /= A; ld rootsign = 1; // if(gc == gcSphere && vid.alpha > 1) rootsign = -1; ld hz = B / 2 + rootsign * sqrt(C + B*B/4); hyperpoint H; H[0] = hx * (hz+alpha); H[1] = hy * (hz+alpha); H[LDIM] = hz; return H; } EX hyperpoint space_to_perspective(hyperpoint z, ld alpha IS(vid.alpha)) { ld s = 1 / (alpha + z[LDIM]); z[0] *= s; z[1] *= s; if(GDIM == 3) { z[2] *= s; z[3] = 0; } else z[2] = 0; return z; } EX hyperpoint gethyper(ld x, ld y) { ld hx = (x - current_display->xcenter) / current_display->radius; ld hy = (y - current_display->ycenter) / current_display->radius / vid.stretch; if(pmodel) { ghx = hx, ghy = hy; return ghpm; } if(vid.camera_angle) camrotate(hx, hy); return perspective_to_space(hpxyz(hx, hy, 0)); } void ballmodel(hyperpoint& ret, double alpha, double d, double zl) { hyperpoint H = ypush(vid.camera) * xpush(d) * ypush(zl) * C0; ld tzh = vid.ballproj + H[LDIM]; ld ax = H[0] / tzh; ld ay = H[1] / tzh; ld ca = cos(alpha), sa = sin(alpha); ret[0] = ax * ca; ret[1] = ay; ret[2] = ax * sa; models::apply_ball(ret[2], ret[1]); } void apply_depth(hyperpoint &f, ld z) { if(vid.usingGL) f[2] = z; else { z = z * current_display->radius; ld mul = current_display->radius / (current_display->radius + z); f[0] = f[0] * mul; f[1] = f[1] * mul; f[2] = vid.xres * current_display->eyewidth() / 2 / current_display->radius + vid.ipd * mul / 2; } } bool hypot_zlev(ld zlev, ld& d, ld& df, ld& zf) { if(zlev == 1) { df = 1; zf = 0; return false; } else { // (0,0,1) -> (0, sin z, cos z) -> (sin d cos z, sin z, cos d cos z) ld z = geom3::factor_to_lev(zlev); ld tz = sin_auto(z); ld td = sin_auto(abs(d)) * cos_auto(z); ld h = hypot(td, tz); zf = tz / h, df = td / h; if(d > 0) d = hypot_auto(d, z); else d = -hypot_auto(d, z); return true; } } int twopoint_sphere_flips; bool twopoint_do_flips; ld find_zlev(hyperpoint& H) { if(spatial_graphics) { ld zlev = zlevel(H); if(zlev > 1-1e-6 && zlev < 1+1e-6) return 1; H /= zlev; return zlev; } return 1; } ld get_tz(hyperpoint H) { ld tz = euclid ? (1+vid.alpha) : vid.alpha+H[LDIM]; if(tz < BEHIND_LIMIT && tz > -BEHIND_LIMIT) tz = BEHIND_LIMIT; return tz; } EX ld atan2(hyperpoint h) { return atan2(h[1], h[0]); } pair move_z_to_y(hyperpoint& H) { if(GDIM == 2) return make_pair(0, 0); ld R = hypot(H[1], H[2]); pair res = { H[1] / R, H[2] / R }; H[1] = R; H[2] = 0; return res; } void move_y_to_z(hyperpoint& H, pair coef) { if(GDIM == 3) { H[2] = H[1] * coef.second; H[1] = H[1] * coef.first; H[3] = 1; } } template void makeband(hyperpoint H, hyperpoint& ret, const T& f) { ld zlev = find_zlev(H); models::apply_orientation_yz(H[1], H[2]); models::apply_orientation(H[0], H[1]); auto r = move_z_to_y(H); ld x, y, yf, zf=0; y = asin_auto(H[1]); x = asin_auto_clamp(H[0] / cos_auto(y)); if(sphere) { if(H[LDIM] < 0 && x > 0) x = M_PI - x; else if(H[LDIM] < 0 && x <= 0) x = -M_PI - x; } x += band_shift; hypot_zlev(zlev, y, yf, zf); f(x, y); ld yzf = y * zf; y *= yf; ret = hpxyz(x / M_PI, y / M_PI, 0); move_y_to_z(ret, r); models::apply_orientation(ret[1], ret[0]); models::apply_orientation_yz(ret[2], ret[1]); if(zlev != 1 && current_display->stereo_active()) apply_depth(ret, yzf / M_PI); return; } void band_conformal(ld& x, ld& y) { switch(cgclass) { case gcSphere: y = atanh(sin(y)); x *= 2; y *= 2; break; case gcHyperbolic: y = 2 * atan(tanh(y/2)); x *= 2; y *= 2; break; case gcEuclid: default: // y = y; y *= 2; x *= 2; break; } } void make_twopoint(ld& x, ld& y) { auto p = vid.twopoint_param; ld dleft = hypot_auto(x-p, y); ld dright = hypot_auto(x+p, y); if(sphere) { int tss = twopoint_sphere_flips; if(tss&1) { tss--; dleft = 2*M_PI - 2*p - dleft; dright = 2*M_PI - 2*p - dright; swap(dleft, dright); y = -y; } while(tss) { tss -= 2; dleft = 2*M_PI - 4*p + dleft; dright = 2*M_PI - 4*p + dright; } } x = (dright*dright-dleft*dleft) / 4 / p; y = (y>0?1:-1) * sqrt(dleft * dleft - (x-p)*(x-p) + 1e-9); } hyperpoint mobius(hyperpoint h, ld angle, ld scale = 1) { h = perspective_to_space(h * scale, 1, gcSphere); h = cspin(1, 2, angle * degree) * h; return space_to_perspective(h, 1) / scale; } hyperpoint compute_hybrid(hyperpoint H, int rootid) { auto& t = vid.twopoint_param; hyperpoint Hl = xpush(+t) * H; hyperpoint Hr = xpush(-t) * H; ld g = (Hl[0] + 1e-7) / (Hl[1] + 1e-8); ld d = hdist0(Hr); hyperpoint spinned = spintox(Hl) * xpush0(2*t); if(Hl[0] < 0) spinned = pispin * spinned; ld y = asin_auto(spinned[1]); ld x = asin_auto_clamp(spinned[0] / cos_auto(y)); int sign = (Hl[0] > 0 ? 1 : -1) * hdist0(Hl) < x ? -1 : 1; switch(rootid & 3) { case 1: sign = -sign; break; case 2: sign = 1; break; case 3: sign = -1; break; } // (x + t) / g = y // yy + (x-t)(x-t) = dd // (x+t)*(x+t)/g*g + x*x + t*t - 2*x*t = dd // x*x*(1+1/g*g) + t*t*(1+1/g*g) + 2xt (1/gg-1) = dd // xx + 2xt (1/gg-1) / (1+1/gg) = dd / (1+1/gg) - tt ld b = t*(1/g/g - 1) / (1+1/g/g); ld c = d*d / (1+1/g/g) - t*t; // xx + 2bx = c // xx + 2bx + bb = c + bb // (x+b)^2 = c+bb // x = +/- sqrt(c+bb) - b ld a = c+b*b; hyperpoint ret; ret[0] = (a > 0 ? sign * sqrt(a) : 0) - b; ret[1] = (ret[0] + t) / g; ret[2] = 0; return ret; } EX ld signed_sqrt(ld x) { return x > 0 ? sqrt(x) : -sqrt(-x); }; EX void applymodel(hyperpoint H, hyperpoint& ret) { hyperpoint H_orig = H; if(models::product_model()) { ld zlev = zlevel(H); H /= exp(zlev); hybrid::in_underlying_geometry([&] { applymodel(H, ret); }); ret[2] = zlev * models::product_z_scale; ret = NLP * ret; return; } switch(pmodel) { case mdPerspective: { ld ratio = vid.xres / current_display->tanfov / current_display->radius / 2; if(prod) H = product::inverse_exp(H); H = lp_apply(H); if(H[2] == 0) { ret[0] = 1e6; ret[1] = 1e6; ret[2] = 1; return; } ret[0] = H[0]/H[2] * ratio; ret[1] = H[1]/H[2] * ratio; ret[2] = 1; return; } case mdGeodesic: { auto S = lp_apply(inverse_exp(H, iTable)); ld ratio = vid.xres / current_display->tanfov / current_display->radius / 2; ret[0] = S[0]/S[2] * ratio; ret[1] = S[1]/S[2] * ratio; ret[2] = 1; return; } case mdPixel: ret = H / current_display->radius; return; case mdBall: { ld zlev = find_zlev(H); ld zl = vid.depth-geom3::factor_to_lev(zlev); ballmodel(ret, atan2(H), hdist0(H), zl); break; } case mdDisk: { if(nonisotropic) { ret = lp_apply(inverse_exp(H, iTable, true)); ld w; if(sn::in()) { // w = 1 / sqrt(1 - sqhypot_d(3, ret)); // w = w / (vid.alpha + w); w = 1 / (sqrt(1 - sqhypot_d(3, ret)) * vid.alpha + 1); } else { w = hypot_d(3, ret); w = sinh(w) / ((vid.alpha + cosh(w)) * w); } for(int i=0; i<3; i++) ret[i] *= w; ret[3] = 1; break; } ld tz = get_tz(H); if(!vid.camera_angle) { ret[0] = H[0] / tz; ret[1] = H[1] / tz; if(GDIM == 3) ret[2] = H[2] / tz; else ret[2] = vid.xres * current_display->eyewidth() / 2 / current_display->radius - vid.ipd / tz / 2; if(MAXMDIM == 4) ret[3] = 1; } else { ld tx = H[0]; ld ty = H[1]; ld cam = vid.camera_angle * degree; GLfloat cc = cos(cam); GLfloat ss = sin(cam); ld ux = tx, uy = ty * cc - ss * tz, uz = tz * cc + ss * ty; ret[0] = ux / uz; ret[1] = uy / uz; ret[2] = vid.xres * current_display->eyewidth() / 2 / current_display->radius - vid.ipd / uz / 2; } return; } case mdCentralInversion: { ld tz = get_tz(H); for(int d=0; d 1e-5) H[1] = H[1] * pow(zlev, models::ocos); if(abs(models::ocos) > 1e-5 && models::osin) H[1] += H[0] * models::osin * (pow(zlev, models::ocos) - 1) / models::ocos; else if(models::osin) H[1] += H[0] * models::osin * log(zlev); } ret[1] = models::ocos + H[1]; ret[2] = GDIM == 3 ? H[2] : 0; if(MAXMDIM == 4) ret[3] = 1; if(zlev != 1 && current_display->stereo_active()) apply_depth(ret, -H[1] * geom3::factor_to_lev(zlev)); break; } case mdHorocyclic: { find_zlev(H); models::apply_orientation_yz(H[1], H[2]); models::apply_orientation(H[0], H[1]); ret = hyperbolic ? deparabolic10(H) : H; ret *= .5; ret[LDIM] = 1; models::apply_orientation(ret[1], ret[0]); models::apply_orientation_yz(ret[2], ret[1]); if(nonisotropic) ret = lp_apply(ret); break; } case mdHemisphere: { switch(cgclass) { case gcHyperbolic: { ld zl = zlevel(H); ret = H / H[2]; ret[2] = sqrt(1 - sqhypot_d(2, ret)); ret = ret * (1 + (zl - 1) * ret[2]); break; } case gcEuclid: default: { // stereographic projection to a sphere auto hd = hdist0(H) / vid.euclid_to_sphere; if(hd == 0) ret = hpxyz(0, 0, -1); else { ld x = 2 * hd / (1 + hd * hd); ld y = x / hd; ret = H * x / hd / vid.euclid_to_sphere; ret[2] = (1 - y); ret = ret * (1 + (H[2]-1) * y / vid.euclid_to_sphere); } break; } case gcSphere: { ret = H; break; } } swap(ret[1], ret[2]); models::apply_ball(ret[2], ret[1]); break; } case mdHyperboloidFlat: case mdHyperboloid: { if(nonisotropic) { // if(nisot::local_perspective_used()) H = NLP * H; ret = lp_apply(H); break; } if(prod) { ret = H; break; } if(pmodel == mdHyperboloid) { ld& topz = models::top_z; if(H[2] > topz) { ld scale = sqrt(topz*topz-1) / hypot_d(2, H); H *= scale; H[2] = topz; } } else { H = space_to_perspective(H, vid.alpha); H[2] = 1 - vid.alpha; } ret[0] = H[0] / 3; ret[1] = (1 - H[2]) / 3; ret[2] = H[1] / 3; models::apply_ball(ret[2], ret[1]); break; } case mdFisheye: { ld zlev; if(nonisotropic) { H = lp_apply(inverse_exp(H, iTable, false)); zlev = 1; } else { zlev = find_zlev(H); H = space_to_perspective(H); } H /= vid.fisheye_param; H[LDIM] = zlev; ret = H / sqrt(1 + sqhypot_d(GDIM+1, H)); if(GDIM == 3) ret[LDIM] = zlev; break; } case mdSimulatedPerspective: { models::apply_orientation_yz(H[1], H[2]); models::apply_orientation(H[0], H[1]); auto yz = move_z_to_y(H); hyperpoint Hl = xpush(-vid.twopoint_param) * H; hyperpoint Hr = xpush(+vid.twopoint_param) * H; ld lyx = (Hl[1] + 1e-7) / (Hl[0] + 1e-8); ld ryx = (Hr[1] + 1e-7) / (Hr[0] + 1e-8); // (r.x + t) * lyx = (r.x - t) * ryx = r.y // r.x * lyx + t * lyx = r.x * ryx - t * ryx // r.x * (lyx-ryx) = - t * (ryx + lyx) // r.x = -t * (ryx+lyx) / (lyx-ryx) // r.x = - 2 * t * lyx * ryx / lyx / ryx ret[0] = -vid.twopoint_param * (ryx + lyx) / (lyx - ryx); ret[1] = (ret[0] + vid.twopoint_param) * lyx; ret[2] = 0; move_y_to_z(ret, yz); models::apply_orientation(ret[0], ret[1]); models::apply_orientation_yz(ret[2], ret[1]); break; } case mdTwoHybrid: { models::apply_orientation_yz(H[1], H[2]); models::apply_orientation(H[0], H[1]); auto yz = move_z_to_y(H); ret = compute_hybrid(H, whateveri[0]); move_y_to_z(ret, yz); models::apply_orientation(ret[0], ret[1]); models::apply_orientation_yz(ret[2], ret[1]); break; } case mdJoukowsky: case mdJoukowskyInverted: { models::apply_orientation_yz(H[1], H[2]); models::apply_orientation(H[0], H[1]); // with equal speed skiprope: models::apply_orientation(H[1], H[0]); if(vid.skiprope) { static ld last_skiprope = 0; static transmatrix lastmatrix; if(vid.skiprope != last_skiprope) { ret = mobius(C0, -vid.skiprope, 2); const cld c1(1, 0); const cld c2(2, 0); const cld c4(4, 0); cld w(ret[0], ret[1]); cld z = sqrt(c4*w*w-c1) + c2*w; if(abs(z) > 1) z = c1 / z; hyperpoint zr = hpxyz(real(z), imag(z), 0); hyperpoint inhyp = perspective_to_space(zr, 1, gcHyperbolic); last_skiprope = vid.skiprope; lastmatrix = rgpushxto0(inhyp); } H = lastmatrix * H; } H = space_to_perspective(H); auto yz = move_z_to_y(H); ld r = hypot_d(2, H); ld c = H[0] / r; ld s = H[1] / r; ld& mt = models::model_transition; ld a = 1 - .5 * mt, b = .5 * mt; swap(a, b); ret[0] = (a * r + b/r) * c / 2; ret[1] = (a * r - b/r) * s / 2; ret[2] = 0; if(vid.skiprope) ret = mobius(ret, vid.skiprope, 2); if(pmodel == mdJoukowskyInverted) { ld r2 = sqhypot_d(2, ret); ret[0] = ret[0] / r2; ret[1] = -ret[1] / r2; move_y_to_z(ret, yz); models::apply_orientation(ret[1], ret[0]); /* ret[0] += 1; ld alpha = atan2(ret[1], ret[0]); ld mod = hypot(ret[0], ret[1]); // ret[0] = cos(alpha/2) * sqrt(mod); // ret[1] = sin(alpha/2) * sqrt(mod); ret[0] = alpha; ret[1] = log(mod); */ } else { move_y_to_z(ret, yz); models::apply_orientation(ret[0], ret[1]); } models::apply_orientation_yz(ret[2], ret[1]); break; } case mdPolygonal: case mdPolynomial: { H = space_to_perspective(H); models::apply_orientation(H[0], H[1]); pair p = polygonal::compute(H[0], H[1]); models::apply_orientation(p.second, p.first); ret[0] = p.first; ret[1] = p.second; ret[2] = 0; break; } case mdBand: if(models::model_transition != 1) { ld& mt = models::model_transition; H = space_to_perspective(H); models::apply_orientation(H[0], H[1]); H[0] += 1; double rad = H[0]*H[0] + H[1]*H[1]; H[1] /= rad; H[0] /= rad; H[0] -= .5; ld phi = atan2(H); ld r = hypot_d(2, H); r = pow(r, 1 - mt); phi *= (1 - mt); ret[0] = r * cos(phi); ret[1] = r * sin(phi); ret[2] = 0; ret[0] -= pow(0.5, 1-mt); ret[0] /= -(1-mt) * M_PI / 2; ret[1] /= (1-mt) * M_PI / 2; models::apply_orientation(ret[1], ret[0]); } else makeband(H, ret, band_conformal); break; case mdTwoPoint: makeband(H, ret, make_twopoint); break; case mdMollweide: makeband(H, ret, [] (ld& x, ld& y) { ld theta = hyperbolic ? min(y / 2 + 0.572365, y * 0.78509) : euclid ? y : y > 0 ? max(y * 0.012/0.015, M_PI/2 - (M_PI/2-y) * 0.066262/0.015708) : min(y * 0.012/0.015, -M_PI/2 + (M_PI/2+y) * 0.066262/0.015708); if(sphere && abs(theta) >= M_PI/2 - 1e-6) ; else { for(int it=0; it<4; it++) { auto a = (sin_auto(2*theta) +2*theta - M_PI * sin_auto(y)); auto b = (2 + 2 * cos_auto(2*theta)); theta = theta - a / b; } } y = M_PI * sin_auto(theta) / 2; x = x * cos_auto(theta); }); break; case mdCentralCyl: makeband(H, ret, [] (ld& x, ld& y) { y = tan_auto(y); ld top = vid.yres * M_PI / current_display->radius; if(y>top) y=top; if(y<-top) y=-top; }); break; case mdCollignon: find_zlev(H); makeband(H, ret, [] (ld& x, ld& y) { ld sgn = 1; if(vid.collignon_reflected && y > 0) y = -y, sgn = -1; y = signed_sqrt(sin_auto(y) + vid.collignon_parameter); x *= y / 1.2; y -= signed_sqrt(vid.collignon_parameter); y *= sgn; y *= M_PI; }); break; case mdBandEquiarea: makeband(H, ret, [] (ld& x, ld& y) { y = sin_auto(y); }); break; case mdBandEquidistant: makeband(H, ret, [] (ld& x, ld& y) { }); break; case mdSinusoidal: makeband(H, ret, [] (ld& x, ld& y) { x *= cos_auto(y); }); break; case mdEquidistant: case mdEquiarea: case mdEquivolume: { if(nonisotropic || prod) { ret = lp_apply(inverse_exp(H, iTable, false)); ret[3] = 1; break; } ld zlev = find_zlev(H); ld rad = hypot_d(GDIM, H); if(rad == 0) rad = 1; ld d = hdist0(H); ld df, zf; hypot_zlev(zlev, d, df, zf); // 4 pi / 2pi = M_PI if(pmodel == mdEquivolume) d = pow(volume_auto(d), 1/3.) * pow(M_PI / 2, 1/3.); else if(pmodel == mdEquiarea && sphere) d = sqrt(2*(1 - cos(d))) * M_PI / 2; else if(pmodel == mdEquiarea && hyperbolic) d = sqrt(2*(cosh(d) - 1)) / 1.5; ret = H * (d * df / rad / M_PI); if(GDIM == 2) ret[2] = 0; if(MAXMDIM == 4) ret[3] = 1; if(zlev != 1 && current_display->stereo_active()) apply_depth(ret, d * zf / M_PI); break; } case mdRotatedHyperboles: { // ld zlev = <- not implemented find_zlev(H); // + vid.depth; models::apply_orientation(H[0], H[1]); ld y = asin_auto(H[1]); ld x = asin_auto_clamp(H[0] / cos_auto(y)); // ld z = zlev == 1 ? 0 : geom3::factor_to_lev(zlev); ld factor = geom3::lev_to_factor(y + vid.depth); ret[0] = sinh(x) * factor; ret[1] = cosh(x) * factor; ret[2] = 0; if(models::use_atan) { ret[0] = atan(ret[0]); ret[1] = atan(ret[1]); } break; } case mdFormula: { dynamicval m(pmodel, models::basic_model); applymodel(H, ret); exp_parser ep; ep.extra_params["z"] = cld(ret[0], ret[1]); ep.extra_params["cx"] = ret[0]; ep.extra_params["cy"] = ret[1]; ep.extra_params["cz"] = ret[2]; ep.extra_params["ux"] = H[0]; ep.extra_params["uy"] = H[1]; ep.extra_params["uz"] = H[2]; ep.s = models::formula; cld res; try { res = ep.parse(); } catch(hr_parse_exception&) { res = 0; } ret[0] = real(res); ret[1] = imag(res); ret[2] = 0; break; } case mdSpiral: { cld z; if(hyperbolic || sphere) makeband(H, ret, band_conformal); else ret = H; z = cld(ret[0], ret[1]) * models::spiral_multiplier; if(models::spiral_cone < 360) { ld alpha = imag(z) * 360 / models::spiral_cone; ld r = real(z); r = exp(r); ret[0] = -sin(alpha) * r; ret[1] = cos(alpha) * r; if(euclid) ret = models::euclidean_spin * ret; ret[2] = (r-1) * sqrt( pow(360/models::spiral_cone, 2) - 1); models::apply_ball(ret[2], ret[1]); } else { z = exp(z); ret[0] = real(z); ret[1] = imag(z); if(euclid) ret = models::euclidean_spin * ret; if(vid.skiprope) ret = mobius(ret, vid.skiprope, 1); } } case mdGUARD: case mdManual: break; } ghcheck(ret,H_orig); } // game-related graphics EX transmatrix sphereflip; // on the sphere, flip EX bool playerfound; // has player been found in the last drawing? EX bool outofmap(hyperpoint h) { if(GDIM == 3) return false; else if(euclid) return h[2] < .5; // false; // h[0] * h[0] + h[1] * h[1] > 15 * cgi.crossf; else if(sphere) return h[2] < .1 && h[2] > -.1 && h[1] > -.1 && h[1] < .1 && h[0] > -.1 && h[0] < .1; else return h[2] < .5; } EX hyperpoint mirrorif(const hyperpoint& V, bool b) { if(b) return Mirror*V; else return V; } EX transmatrix mirrorif(const transmatrix& V, bool b) { if(b) return V*Mirror; else return V; } // -1 if away, 0 if not away EX int away(const transmatrix& V2) { return (intval(C0, V2 * xpush0(.1)) > intval(C0, tC0(V2))) ? -1 : 0; } /* double zgrad(double f1, double f2, int nom, int den) { using namespace geom3; ld fo1 = factor_to_lev(f1); ld fo2 = factor_to_lev(f2); return lev_to_factor(fo1 + (fo2-fo1) * nom / den); } */ EX double zgrad0(double l1, double l2, int nom, int den) { using namespace geom3; return lev_to_factor(l1 + (l2-l1) * nom / den); } EX bool behindsphere(const hyperpoint& h) { if(!sphere) return false; if(mdBandAny()) return false; if(vid.alpha > 1) { if(h[LDIM] > -1/vid.alpha) return true; } if(vid.alpha <= 1) { if(h[LDIM] < .2-vid.alpha) return true; } return false; } ld to01(ld a0, ld a1, ld x) { if(x < a0) return 0; if(x > a1) return 1; return (x-a0) / (a1-a0); } EX ld spherity(const hyperpoint& h) { if(!sphere) return 1; if(vid.alpha > 1) { return to01(1/vid.alpha, 1, abs(h[2])); } if(vid.alpha <= 1) { return to01(-1.5, 1, h[2]); } return 1; } EX bool behindsphere(const transmatrix& V) { return behindsphere(tC0(V)); } EX ld spherity(const transmatrix& V) { return spherity(tC0(V)); } EX bool confusingGeometry() { return quotient; } EX ld master_to_c7_angle() { if(hybri) return hybrid::in_underlying_geometry(master_to_c7_angle); if(WDIM == 3) return 0; ld alpha = 0; #if CAP_GP if(cgi.gpdata) alpha = cgi.gpdata->alpha; #endif return (!BITRUNCATED && !bt::in() && !arcm::in()) ? M_PI + alpha : 0; } EX transmatrix actualV(const heptspin& hs, const transmatrix& V) { if(prod) return PIU(actualV(hs, V)); if(WDIM == 3) return V; #if CAP_IRR if(IRREGULAR) return V * spin(M_PI + 2 * M_PI / S7 * (hs.spin + irr::periodmap[hs.at].base.spin)); #endif #if CAP_ARCM if(arcm::in()) return V * spin(-arcm::current.triangles[arcm::id_of(hs.at)][hs.spin].first); #endif #if CAP_BT if(bt::in()) return V; #endif if(kite::in()) return V; return (hs.spin || !BITRUNCATED) ? V * spin(hs.spin*2*M_PI/hs.at->type + master_to_c7_angle()) : V; } EX bool point_behind(hyperpoint h) { if(sphere) return false; if(!in_perspective()) return false; if(pmodel == mdGeodesic) h = inverse_exp(h, iLazy); if(pmodel == mdPerspective && prod) h = product::inverse_exp(h); h = lp_apply(h); return h[2] < 1e-8; } void raise_error() { println(hlog, "something wrong"); } EX bool invalid_matrix(const transmatrix T) { for(int i=0; i 1e8 || T[i][j] < -1e8 || std::isinf(T[i][j])) return true; if(prod) { for(int i=0; i 1e-60) return false; } else for(int i=0; i .5 || T[i][j] < -.5) return false; return true; } EX bool invalid_point(const hyperpoint h) { return std::isnan(h[LDIM]) || h[LDIM] > 1e8 || std::isinf(h[LDIM]); } EX bool in_smart_range(const transmatrix& T) { hyperpoint h = tC0(T); if(invalid_point(h)) return false; if(nil || nih) return true; #if CAP_SOLV if(pmodel == mdGeodesic) return sn::in_table_range(h); #endif hyperpoint h1; applymodel(h, h1); if(invalid_point(h1)) return false; ld x = current_display->xcenter + current_display->radius * h1[0]; ld y = current_display->ycenter + current_display->radius * h1[1] * vid.stretch; if(x > current_display->xtop + current_display->xsize * 2) return false; if(x < current_display->xtop - current_display->xsize * 1) return false; if(y > current_display->ytop + current_display->ysize * 2) return false; if(y < current_display->ytop - current_display->ysize * 1) return false; if(GDIM == 3) { if(-h1[2] < models::clip_min * 2 - models::clip_max) return false; if(-h1[2] > models::clip_max * 2 - models::clip_min) return false; } ld epsilon = 0.01; ld dx = 0, dy = 0, dz = 0, dh[MAXMDIM]; for(int i=0; iradius * abs(h2[0] - h1[0]) / epsilon; ld y1 = current_display->radius * abs(h2[1] - h1[1]) * vid.stretch / epsilon; dx = max(dx, x1); dy = max(dy, y1); if(GDIM == 3) dz = max(dz, abs(h2[2] - h1[2])); dh[i] = hypot(x1, y1); } if(GDIM == 3) { if(-h1[2] + 2 * dz < models::clip_min || -h1[2] - 2 * dz > models::clip_max) return false; sort(dh, dh+GDIM); ld scale = sqrt(dh[1] * dh[2]) * cgi.scalefactor * hcrossf7; if(scale <= (WDIM == 2 ? vid.smart_range_detail : vid.smart_range_detail_3)) return false; } else { ld scale = sqrt(dh[0] * dh[1]) * cgi.scalefactor * hcrossf7; if(scale <= vid.smart_range_detail) return false; } return x - 2 * dx < current_display->xtop + current_display->xsize && x + 2 * dx > current_display->xtop && y - 2 * dy < current_display->ytop + current_display->ysize && y + 2 * dy > current_display->ytop; } #if CAP_GP namespace gp { /* void drawrec(cell *c, const transmatrix& V) { if(dodrawcell(c)) drawcell(c, V, 0, false); for(int i=0; itype; i++) { cell *c2 = c->move(i); if(!c2) continue; if(c2->move(0) != c) continue; if(c2 == c2->master->c7) continue; transmatrix V1 = V * ddspin(c, i) * xpush(cgi.crossf) * iddspin(c2, 0) * spin(M_PI); drawrec(c2, V1); } } */ bool drawrec(cell *c, const transmatrix& V, gp::loc at, int dir, int maindir) { bool res = false; transmatrix V1 = V * cgi.gpdata->Tf[draw_li.last_dir][at.first&31][at.second&31][fixg6(dir)]; if(do_draw(c, V1)) { /* auto li = get_local_info(c); if((dir - li.total_dir) % S6) printf("totaldir %d/%d\n", dir, li.total_dir); if(at != li.relative) printf("at %s/%s\n", disp(at), disp(li.relative)); if(maindir != li.last_dir) printf("ld %d/%d\n", maindir, li.last_dir); */ draw_li.relative = at; draw_li.total_dir = fixg6(dir); drawcell(c, V1); res = true; } for(int i=0; itype; i++) { cell *c2 = c->move(i); if(!c2) continue; if(c2->move(0) != c) continue; if(c2 == c2->master->c7) continue; res |= drawrec(c2, V, at + eudir(dir+i), dir + i + SG3, maindir); } return res; } bool drawrec(cell *c, const transmatrix& V) { draw_li.relative = loc(0,0); draw_li.total_dir = 0; draw_li.last_dir = -1; bool res = false; if(do_draw(c, V)) drawcell(c, V), res = true; for(int i=0; itype; i++) { cell *c2 = c->move(i); if(!c2) continue; if(c2->move(0) != c) continue; if(c2 == c2->master->c7) continue; draw_li.last_dir = i; res |= drawrec(c2, V, gp::loc(1,0), SG3, i); } return res; } } #endif vector > drawn_cells; bool in_multi = false; EX bool drawcell_subs(cell *c, transmatrix V) { #if CAP_GP if(GOLDBERG) { return gp::drawrec(c, V); } #endif bool draw = false; #if CAP_IRR if(IRREGULAR) { auto& hi = irr::periodmap[c->master]; auto& vc = irr::cells_of_heptagon[hi.base.at]; for(int i=0; ic.spin(d) == 0) { transmatrix V2 = V * currentmap->adj(c, d); if(do_draw(c1, V2)) draw = true, drawcell(c1, V2); } } return draw; } void hrmap_standard::draw() { if(sphere && pmodel == mdSpiral && !in_multi) { in_multi = true; if(models::ring_not_spiral) { int qty = ceil(1. / models::sphere_spiral_multiplier); if(qty > 100) qty = 100; for(int i=-qty; i < qty; i++) { band_shift = 2 * M_PI * i; draw(); } } else { draw(); if(vid.use_smart_range) for(int i=1;; i++) { int drawn = cells_drawn; band_shift = 2 * M_PI * i; draw(); band_shift = -2 * M_PI * i; draw(); if(drawn == cells_drawn) break; } } in_multi = false; return; } drawn_cells.clear(); drawn_cells.emplace_back(centerover->master, hsOrigin, cview() * master_relative(centerover, true), band_shift); for(int i=0; i(2 * drawn_cells.size(), 128)); const auto& dc = drawn_cells[i]; auto& hs = get<0>(dc); auto& s = get<1>(dc); auto& V = get<2>(dc); dynamicval bs(band_shift, get<3>(dc)); cell *c = hs.at->c7; transmatrix V10; const transmatrix& V1 = hs.mirrored ? (V10 = V * Mirror) : V; bool draw = drawcell_subs(c, actualV(hs, V1)); if(sphere) draw = true; if(draw) for(int d=0; dtype; d++) { hstate s2 = transition(s, d); if(s2 == hsError) continue; heptspin hs2 = hs + d + wstep; transmatrix Vd; if(inforder::mixed()) { int d1 = gmod(hs.spin+d, c->type); Vd = V * spin(-2*M_PI*d/c->type) * xpush(spacedist(c, d1)) * spin(M_PI); } else Vd = V * cgi.heptmove[d]; bandfixer bf(Vd); drawn_cells.emplace_back(hs2, s2, Vd, band_shift); } } } EX void spinEdge(ld aspd) { ld downspin = 0; auto& ds = downseek; if(dual::state == 2 && dual::currently_loaded != dual::main_side) { transmatrix our = dual::get_orientation(); transmatrix their = dual::player_orientation[dual::main_side]; fixmatrix(our); fixmatrix(their); if(GDIM == 2) { transmatrix T = their * inverse(our); hyperpoint H = T * xpush0(1); downspin = -atan2(H[1], H[0]); } else rotate_view(their * inverse(our)); } else if(playerfound && vid.fixed_facing) { hyperpoint H = gpushxto0(playerV * C0) * playerV * xpush0(5); downspin = atan2(H[1], H[0]); downspin += vid.fixed_facing_dir * degree; if(flipplayer) downspin += M_PI; while(downspin < -M_PI) downspin += 2*M_PI; while(downspin > +M_PI) downspin -= 2*M_PI; aspd = (1 + 2 * abs(downspin)) * aspd; } else if((WDIM == 2 || prod) && GDIM == 3 && vid.fixed_yz && !CAP_ORIENTATION) { aspd = 999999; auto& vo = get_view_orientation(); // does not work well (also need change auto& to auto) // if(hybri && !prod) vo = vo * inverse(nisot::translate(tC0(vo))); if(ds.qty) { auto sdp = ds.point; if(prod) sdp = vo * product::inverse_exp(sdp); if(sdp[0]) downspin = models::rotation * degree - atan2(sdp[0], sdp[1]); } else { if(vo[0][2]) downspin = -atan2(vo[0][2], vo[1][2]); } } else if(ds.qty) { downspin = atan2(ds.point[1], ds.point[0]); downspin -= M_PI/2; downspin += models::rotation * degree; while(downspin < -M_PI) downspin += 2*M_PI; while(downspin > +M_PI) downspin -= 2*M_PI; downspin = downspin * min(ds.speed, (double)1); } if(downspin > aspd) downspin = aspd; if(downspin < -aspd) downspin = -aspd; rotate_view(spin(downspin)); } EX void centerpc(ld aspd) { if(subscreens::split([=] () {centerpc(aspd);})) return; if(dual::split([=] () { centerpc(aspd); })) return; #if CAP_CRYSTAL if(cryst) crystal::centerrug(aspd); #endif #if CAP_RACING if(racing::on && racing::set_view()) return; #endif #if MAXMDIM >= 4 if(shmup::on && vid.sspeed > -5 && GDIM == 3) { int id = subscreens::in ? subscreens::current_player : 0; auto& pc = shmup::pc[id]; centerover = pc->base; transmatrix T = pc->at; int sl = snakelevel(cwt.at); if(sl && WDIM == 2) T = T * zpush(cgi.SLEV[sl] - cgi.FLOOR); View = inverse(T); if(prod) NLP = inverse(pc->ori); if(WDIM == 2) rotate_view( cspin(0, 1, M_PI) * cspin(2, 1, M_PI/2 + shmup::playerturny[id]) * spin(-M_PI/2) ); return; } #endif if(ors::mode == 2 && vid.sspeed < 5) return; if(vid.sspeed >= 4.99) aspd = 1000; DEBBI(DF_GRAPH, ("center pc")); auto& W = current_display->which_copy; ors::unrotate(W); ors::unrotate(View); ors::unrotate(cwtV); /* what should we center? */ transmatrix T; if(multi::players > 1) T = cwtV; /* do not even try */ else { T = W; if(shmup::on) T = T * shmup::pc[0]->at; } if(invalid_matrix(T)) return; #if MAXMDIM >= 4 if(GDIM == 3 && WDIM == 2) { geom3::do_auto_eye(); int sl = snakelevel(cwt.at); if(isWorm(cwt.at->monst) && sl < 3) sl++; if(sl || vid.eye) T = T * zpush(cgi.SLEV[sl] - cgi.FLOOR + vid.eye); } #endif hyperpoint H = inverse(actual_view_transform) * tC0(T); ld R = (zero_d(GDIM, H) && !prod) ? 0 : hdist0(H); if(R < 1e-9) { // either already centered or direction unknown /* if(playerfoundL && playerfoundR) { } */ spinEdge(aspd); fixmatrix(View); current_display->which_copy = gmatrix[cwt.at]; } else { aspd *= euclid ? (2+3*R*R) : (1+R+(shmup::on?1:0)); if(R < aspd) shift_view_to(H); else shift_view_towards(H, aspd); fixmatrix(View); fixmatrix(current_display->which_copy); spinEdge(aspd); } ors::rerotate(W); ors::rerotate(cwtV); ors::rerotate(View); } EX void optimizeview() { if(subscreens::split(optimizeview)) return; if(dual::split(optimizeview)) return; transmatrix iView = inverse(View); virtualRebase(centerover, iView); View = inverse(iView); fixmatrix(View); #if CAP_ANIMATIONS if(centerover && inmirror(centerover)) { anims::reflect_view(); } #endif } void addball(ld a, ld b, ld c) { hyperpoint h; ballmodel(h, a, b, c); for(int i=0; i<3; i++) h[i] *= current_display->radius; curvepoint(h); } void ballgeometry() { queuereset(mdPixel, PPR::CIRCLE); for(int i=0; i<60; i++) addball(i * M_PI/30, 10, 0); for(double d=10; d>=-10; d-=.2) addball(0, d, 0); for(double d=-10; d<=10; d+=.2) addball(0, d, vid.depth); addball(0, 0, -vid.camera); addball(0, 0, vid.depth); addball(0, 0, -vid.camera); addball(0, -10, 0); addball(0, 0, -vid.camera); queuecurve(darkena(0xFF, 0, 0x80), 0, PPR::CIRCLE); queuereset(pmodel, PPR::CIRCLE); } EX void resetview() { DEBBI(DF_GRAPH, ("reset view")); // EUCLIDEAN NLP = Id; if(cwt.at) { centerover = cwt.at; View = iddspin(cwt.at, cwt.spin); if(!flipplayer) View = pispin * View; if(cwt.mirrored) View = Mirror * View; if(GDIM == 2) View = spin(M_PI + vid.fixed_facing_dir * degree) * View; if(GDIM == 3 && !prod) View = cspin(0, 2, M_PI/2) * View; if(prod) NLP = cspin(0, 2, M_PI/2); } else if(currentmap) { centerover = currentmap->gamestart(); View = Id; } cwtV = View; current_display->which_copy = nonisotropic ? gpushxto0(tC0(inverse(View))) : View; // SDL_LockSurface(s); // SDL_UnlockSurface(s); } EX void panning(hyperpoint hf, hyperpoint ht) { View = rgpushxto0(hf) * rgpushxto0(gpushxto0(hf) * ht) * gpushxto0(hf) * View; playermoved = false; } EX int cells_drawn, cells_generated; EX void fullcenter() { history::path_for_lineanimation.clear(); if(playerfound && false) centerpc(INF); else { bfs(); resetview(); drawthemap(); centerpc(INF); centerover = cwt.at; } playermoved = true; } transmatrix screenpos(ld x, ld y) { transmatrix V = Id; V[0][2] += (x - current_display->xcenter) / current_display->radius * (1+vid.alpha); V[1][2] += (y - current_display->ycenter) / current_display->radius * (1+vid.alpha); return V; } /** In 3D, we use the standard translation matrices to place stuff on the screen. In 2D, this does not work (as HyperRogue reduces matrices to 3x3) so we use the native disk projection */ EX eModel flat_model() { return MDIM == 4 ? mdPixel : mdDisk; } EX transmatrix atscreenpos(ld x, ld y, ld size) { transmatrix V = Id; if(pmodel == mdPixel) { V[0][3] += (x - current_display->xcenter); V[1][3] += (y - current_display->ycenter); V[0][0] = size * 2 * cgi.hcrossf / cgi.crossf; V[1][1] = size * 2 * cgi.hcrossf / cgi.crossf; if(WDIM == 3) V[2][2] = -1; } else { V[0][2] += (x - current_display->xcenter); V[1][2] += (y - current_display->ycenter); V[0][0] = size * 2 * cgi.hcrossf / cgi.crossf; V[1][1] = size * 2 * cgi.hcrossf / cgi.crossf; V[2][2] = current_display->radius; if(S3 >= OINF) V[0][0] /= 5, V[1][1] /= 5; } return V; } void circle_around_center(ld radius, color_t linecol, color_t fillcol, PPR prio) { #if CAP_QUEUE if(among(pmodel, mdDisk, mdEquiarea, mdEquidistant, mdFisheye) && !(pmodel == mdDisk && hyperbolic && vid.alpha <= -1) && vid.camera_angle == 0) { hyperpoint ret; applymodel(xpush0(radius), ret); ld r = hypot_d(2, ret); queuecircle(current_display->xcenter, current_display->ycenter, r * current_display->radius, linecol, prio, fillcol); return; } #endif #if CAP_QUEUE for(int i=0; i<=360; i++) curvepoint(xspinpush0(i * degree, 10)); auto& c = queuecurve(linecol, fillcol, prio); if(pmodel == mdDisk && hyperbolic && vid.alpha <= -1) c.flags |= POLY_FORCE_INVERTED; if(pmodel == mdJoukowsky) c.flags |= POLY_FORCE_INVERTED; c.flags |= POLY_ALWAYS_IN; #endif } EX color_t periodcolor = 0x00FF0080; EX color_t ringcolor = darkena(0xFF, 0, 0xFF); EX color_t modelcolor = 0; #if CAP_QUEUE EX void draw_model_elements() { dynamicval lw(vid.linewidth, vid.linewidth * vid.multiplier_ring); switch(pmodel) { case mdRotatedHyperboles: { queuestr(current_display->xcenter, current_display->ycenter + current_display->radius * vid.alpha, 0, vid.fsize, "X", ringcolor, 1, 8); return; } case mdTwoHybrid: { queuereset(mdPixel, PPR::CIRCLE); for(int mode=0; mode<4; mode++) { for(int s=-200; s<=200; s ++) { ld p = tanh(s / 40.); ld a = vid.twopoint_param * (1+p); ld b = vid.twopoint_param * (1-p); ld h = ((mode & 2) ? -1 : 1) * sqrt(asin_auto(tan_auto(a) * tan_auto(b))); hyperpoint H = xpush(p * vid.twopoint_param) * ypush0(h); hyperpoint res = compute_hybrid(H, 2 | mode); models::apply_orientation(res[0], res[1]); models::apply_orientation_yz(res[2], res[1]); curvepoint(res * current_display->radius); } queuecurve(ringcolor, 0, PPR::CIRCLE); } queuereset(pmodel, PPR::CIRCLE); /* fallthrough */ } case mdTwoPoint: case mdSimulatedPerspective: { ld a = -models::model_orientation * degree; queuestr(xspinpush0(a, +vid.twopoint_param), vid.xres / 100, "X", ringcolor >> 8); queuestr(xspinpush0(a, -vid.twopoint_param), vid.xres / 100, "X", ringcolor >> 8); return; } case mdBall: { queuecircle(current_display->xcenter, current_display->ycenter, current_display->radius, ringcolor, PPR::OUTCIRCLE, modelcolor); ballgeometry(); return; } case mdHyperboloid: { if(hyperbolic) { #if CAP_QUEUE curvepoint(point3(0,0,1)); curvepoint(point3(0,0,-vid.alpha)); queuecurve(ringcolor, 0, PPR::CIRCLE); ld& tz = models::top_z; ld z = acosh(tz); hyperpoint a = xpush0(z); ld cb = models::cos_ball; ld sb = models::sin_ball; a[1] = sb * a[2] / -cb; a[0] = sqrt(-1 + a[2] * a[2] - a[1] * a[1]); curvepoint(point3(0,0,-vid.alpha)); curvepoint(a); curvepoint(point3(0,0,0)); a[0] = -a[0]; curvepoint(a); curvepoint(point3(0,0,-vid.alpha)); queuecurve(ringcolor, 0, PPR::CIRCLE); curvepoint(point3(-1,0,0)); curvepoint(point3(1,0,0)); queuecurve(ringcolor, 0, PPR::CIRCLE); a[1] = sb * tz / -cb; a[0] = sqrt(tz * tz - a[1] * a[1]); a[2] = tz - vid.alpha; curvepoint(a); curvepoint(point3(0,0,-vid.alpha)); a[0] = -a[0]; curvepoint(a); queuecurve(ringcolor, 0, PPR::CIRCLE); #endif } return; } default: break; } } void queuestraight(hyperpoint X, int style, color_t lc, color_t fc, PPR p) { hyperpoint H0, H1; applymodel(X, H0); H0 *= current_display->radius; ld mul0 = hypot(vid.xres, vid.yres) / hypot_d(2, H0); if(style == 1) { H1 = H0 * -mul0; } else { applymodel(pispin * X, H1); H1 *= current_display->radius; } ld mul1 = hypot(vid.xres, vid.yres) / hypot_d(2, H1); queuereset(mdPixel, p); curvepoint(H0 + spin(M_PI/2) * H0 * mul0); curvepoint(H0 - spin(M_PI/2) * H0 * mul0); curvepoint(H1 + spin(M_PI/2) * H1 * mul1); curvepoint(H1 - spin(M_PI/2) * H1 * mul1); curvepoint(H0 + spin(M_PI/2) * H0 * mul0); queuecurve(lc, fc, p).flags |= POLY_ALWAYS_IN | POLY_FORCEWIDE; queuereset(pmodel, p); /* for(int i=0; i<1; i++) { hyperpoint h = spin(i * 45 * degree) * X; hyperpoint res; applymodel(h, res); if(hypot2(res) < 1000 && !std::isnan(res[0]) && !std::isnan(res[1])) queuestr(h, 16, "X", 0xFF0000 + i * 0x20); } */ } EX void draw_boundary(int w) { if(w == 1) return; if(nonisotropic || euclid || prod) return; dynamicval lw(vid.linewidth, vid.linewidth * vid.multiplier_ring); color_t lc = ringcolor; color_t fc = modelcolor; PPR p = PPR::OUTCIRCLE; if(haveaura()) lc = 0; if(lc == 0 && fc == 0) return; if(pmodel == mdRotatedHyperboles) return; ld fakeinf = sphere ? M_PI-1e-5 : hyperbolic ? 10 : exp(10); #if CAP_SVG dynamicval dw(vid.linewidth, vid.linewidth * (svg::in ? svg::divby : 1)); #endif if(elliptic && !among(pmodel, mdBand, mdBandEquidistant, mdBandEquiarea, mdSinusoidal, mdMollweide, mdCollignon)) circle_around_center(M_PI/2, periodcolor, 0, PPR::CIRCLE); switch(pmodel) { case mdTwoPoint: { if(twopoint_do_flips || current_display->stereo_active() || !sphere) return; queuereset(mdPixel, p); for(int b=-1; b<=1; b+=2) for(ld a=-90; a<=90+1e-6; a+=pow(.5, vid.linequality)) { ld x = sin(a * vid.twopoint_param * b / 90); ld y = 0; ld z = -sqrt(1 - x*x); models::apply_orientation(y, x); hyperpoint h1; applymodel(hpxyz(x,y,z), h1); models::apply_orientation(h1[0], h1[1]); h1[1] = abs(h1[1]) * b; models::apply_orientation(h1[1], h1[0]); curvepoint(h1); } queuecurve(lc, fc, p).flags |= POLY_FORCEWIDE; queuereset(pmodel, p); return; } case mdBand: case mdBandEquidistant: case mdBandEquiarea: case mdSinusoidal: case mdMollweide: case mdCentralCyl: case mdCollignon: { if(GDIM == 3) return; if(pmodel == mdBand && models::model_transition != 1) return; bool bndband = (among(pmodel, mdBand, mdCentralCyl) ? hyperbolic : sphere); transmatrix T = spin(-models::model_orientation * degree); ld right = M_PI/2 - 1e-5; if(bndband) queuestraight(T * ypush0(hyperbolic ? 10 : right), 2, lc, fc, p); ld xperiod = elliptic ? fakeinf/2 : fakeinf; if(sphere && !bndband) { queuestraight(T * xpush0(xperiod), 2, periodcolor, 0, PPR::CIRCLE); } if(sphere && bndband) { ld adegree = degree-1e-6; for(ld a=-90; a<90+1e-6; a+=pow(.5, vid.linequality)) { curvepoint(T * xpush(xperiod) * ypush0(a * adegree)); } for(ld a=-90; a<90+1e-6; a+=pow(.5, vid.linequality)) { curvepoint(T * xpush(-xperiod) * ypush0(-a * adegree)); } curvepoint(T * xpush(xperiod) * ypush0(-90 * adegree)); queuecurve(periodcolor, 0, PPR::CIRCLE).flags |= POLY_FORCEWIDE; } return; } case mdHalfplane: if(hyperbolic && GDIM == 2) { queuestraight(xspinpush0(-models::model_orientation * degree - M_PI/2, fakeinf), 1, lc, fc, p); return; } break; case mdHemisphere: { if(hyperbolic) { queuereset(mdPixel, p); for(int i=0; i<=360; i++) { ld s = sin(i * degree); curvepoint(point3(current_display->radius * cos(i * degree), current_display->radius * s * (models::cos_ball * s >= 0 - 1e-6 ? 1 : abs(models::sin_ball)), 0)); } queuecurve(lc, fc, p); queuereset(pmodel, p); p = PPR::CIRCLE; fc = 0; queuereset(mdPixel, p); for(int i=0; i<=360; i++) { ld s = sin(i * degree); curvepoint(point3(current_display->radius * cos(i * degree), current_display->radius * s * models::sin_ball, 0)); } queuecurve(lc, fc, p); queuereset(pmodel, p); } if(euclid || sphere) { queuereset(mdPixel, p); for(int i=0; i<=360; i++) { curvepoint(point3(current_display->radius * cos(i * degree), current_display->radius * sin(i * degree), 0)); } queuecurve(lc, fc, p); queuereset(pmodel, p); } return; } case mdHyperboloid: { if(hyperbolic) { ld& tz = models::top_z; ld mz = acosh(tz); ld cb = models::cos_ball; ld sb = models::sin_ball; if(abs(sb) <= abs(cb) + 1e-5) { ld step = .01 / (1 << vid.linequality); hyperpoint a; for(ld t=-1; t<=1; t += step) { a = xpush0(t * mz); if(t != 0) { a[1] = sb * a[2] / -cb; ld v = -1 + a[2] * a[2] - a[1] * a[1]; if(v < 0) continue; a[0] = sqrt(v); if(t < 0) a[0] = -a[0]; } curvepoint(a); } if((sb > 0) ^ (cb < 0)) { ld alpha = M_PI - atan2(a[0], -a[1]); for(ld t=-1; t<=1; t += step) curvepoint(xspinpush0(-M_PI/2 - t * alpha, mz)); } else { ld alpha = - atan2(a[0], -a[1]); for(ld t=-1; t<=1; t += step) curvepoint(xspinpush0(+M_PI/2 - t * alpha, mz)); } queuecurve(lc, fc, p); fc = 0; p = PPR::CIRCLE; } for(ld t=0; t<=360; t ++) curvepoint(xspinpush0(t * degree, mz)); queuecurve(lc, fc, p); } return; } case mdSpiral: { if(euclid) return; if(models::ring_not_spiral) return; // if(p == PPR::CIRCLE) p = PPR::OUTCIRCLE; auto& sm = models::spiral_multiplier; ld u = hypot(1, imag(sm) / real(sm)); if(real(sm)) { queuereset(mdPixel, p); for(ld a=-10; a<=10; a+=0.01 / (1 << vid.linequality) / u) { cld z = exp(cld(a, a * imag(sm) / real(sm) + M_PI)); hyperpoint ret = point2(real(z), imag(z)); ret = mobius(ret, vid.skiprope, 1); ret *= current_display->radius; curvepoint(ret); } queuecurve(ringcolor, 0, p).flags |= POLY_ALWAYS_IN; queuereset(pmodel, p); } return; } default: break; } if(sphere && pmodel == mdDisk && vid.alpha > 1) { double rad = current_display->radius / sqrt(vid.alpha*vid.alpha - 1); queuecircle(current_display->xcenter, current_display->ycenter, rad, lc, p, fc); return; } if(sphere && !among(pmodel, mdEquidistant, mdEquiarea)) return; circle_around_center(fakeinf, lc, fc, p); } #endif EX ld band_shift = 0; EX void fix_the_band(transmatrix& T) { if(((mdinf[pmodel].flags & mf::uses_bandshift) && T[LDIM][LDIM] > 1e6) || (sphere && pmodel == mdSpiral)) { T = spin(models::model_orientation * degree) * T; hyperpoint H = tC0(T); find_zlev(H); ld y = asin_auto(H[1]); ld x = asin_auto_clamp(H[0] / cos_auto(y)); if(sphere) { if(H[LDIM] < 0 && x > 0) x = M_PI - x; else if(H[LDIM] < 0 && x <= 0) x = -M_PI - x; } band_shift += x; T = xpush(-x) * T; fixmatrix(T); T = spin(-models::model_orientation * degree) * T; } } #if HDR struct bandfixer { dynamicval bw; bandfixer(transmatrix& T) : bw(band_shift, band_shift) { fix_the_band(T); } }; #endif EX namespace dq { EX queue> drawqueue; EX set visited; EX void enqueue(heptagon *h, const transmatrix& T) { if(!h || visited.count(h)) { return; } visited.insert(h); drawqueue.emplace(h, T, band_shift); } EX set visited_by_matrix; EX void enqueue_by_matrix(heptagon *h, const transmatrix& T) { if(!h) return; if(sl2 && T[3][3] < 0) { enqueue_by_matrix(h, centralsym * T); return; } int b = bucketer(tC0(T)); if(visited_by_matrix.count(b)) { return; } visited_by_matrix.insert(b); drawqueue.emplace(h, T, band_shift); } EX queue> drawqueue_c; EX void enqueue_by_matrix_c(cell *c, const transmatrix& T) { if(!c) return; if(sl2 && T[3][3] < 0) { enqueue_by_matrix_c(c, centralsym * T); return; } int b = bucketer(tC0(T)); if(visited_by_matrix.count(b)) { return; } visited_by_matrix.insert(b); drawqueue_c.emplace(c, T, band_shift); } EX } EX bool do_draw(cell *c) { // do not display out of range cells, unless on torus if(c->pathdist == PINFD && !(euclid && quotient) && vid.use_smart_range == 0) return false; // do not display not fully generated cells, unless changing range allowed if(c->mpdist > 7 && !allowChangeRange()) return false; // in the Yendor Challenge, scrolling back is forbidden if(c->cpdist > 7 && (yendor::on || isHaunted(cwt.at->land)) && !cheater && !autocheat) return false; return true; } EX ld extra_generation_distance = 99; // returns false if limited bool limited_generation(cell *c) { if(c->mpdist <= 7) return true; if(cells_generated > vid.cells_generated_limit) return false; setdist(c, 7, c); cells_generated++; return true; } EX bool do_draw(cell *c, const transmatrix& T) { if(WDIM == 3) { // do not care about cells outside of the track if(GDIM == 3 && racing::on && c->land == laMemory && cells_drawn >= S7+1) return false; if(cells_drawn > vid.cells_drawn_limit) return false; if(cells_drawn < 50) { limited_generation(c); return true; } if(nil && pmodel == mdGeodesic) { ld dist = hypot_d(3, inverse_exp(tC0(T), iLazy)); if(dist > sightranges[geometry] + (vid.sloppy_3d ? 0 : 0.9)) return false; if(dist <= extra_generation_distance && !limited_generation(c)) return false; } else if(pmodel == mdGeodesic && sol) { if(!nisot::in_table_range(tC0(T))) return false; if(!limited_generation(c)) return false; } else if(pmodel == mdGeodesic && nih) { hyperpoint h = inverse_exp(tC0(T), iLazy, false); ld dist = hypot_d(3, h); if(dist > sightranges[geometry] + (vid.sloppy_3d ? 0 : cgi.corner_bonus)) return false; if(dist <= extra_generation_distance && !limited_generation(c)) return false; } else if(pmodel == mdGeodesic && sl2) { if(hypot(tC0(T)[2], tC0(T)[3]) > cosh(slr::range_xy)) return false; if(!limited_generation(c)) return false; } else if(vid.use_smart_range) { if(cells_drawn >= 50 && !in_smart_range(T)) return false; if(!limited_generation(c)) return false; } else { ld dist = hdist0(tC0(T)); if(dist > sightranges[geometry] + (vid.sloppy_3d ? 0 : cgi.corner_bonus)) return false; if(dist <= extra_generation_distance && !limited_generation(c)) return false; } return true; } if(just_gmatrix && sphere) return true; if(!do_draw(c)) return false; if(euclid && pmodel == mdSpiral) { hyperpoint h = tC0(T); cld z(h[0], h[1]); z = z * models::spiral_multiplier; ld iz = imag(z) + 1.14279e-2; // make it never fall exactly on PI if(iz < -M_PI || iz >= M_PI) return false; } if(pmodel == mdSpiral && models::ring_not_spiral) { cld z; hyperpoint H = tC0(T); hyperpoint ret; makeband(H, ret, band_conformal); z = cld(ret[0], ret[1]) * models::spiral_multiplier; if(imag(z) < -models::spiral_cone_rad/2-1e-5 || imag(z) >= models::spiral_cone_rad/2-1e-5) return false; } if(cells_drawn > vid.cells_drawn_limit) return false; bool usr = vid.use_smart_range || quotient; if(usr && cells_drawn >= 50 && !in_smart_range(T) && !(WDIM == 2 && GDIM == 3 && hdist0(tC0(T)) < 2.5)) return false; if(vid.use_smart_range == 2 && !limited_generation(c)) return false; return true; } EX int cone_side(const hyperpoint H) { hyperpoint ret; if(hyperbolic) makeband(H, ret, band_conformal); else ret = H; cld z = cld(ret[0], ret[1]) * models::spiral_multiplier; auto zth = [&] (cld z) { ld alpha = imag(z) * 360 / models::spiral_cone; ld r = real(z); r = exp(r); hyperpoint ret; ret[0] = -sin(alpha) * r; ret[1] = cos(alpha) * r; ret[2] = (r-1) * sqrt( pow(360/models::spiral_cone, 2) - 1); models::apply_ball(ret[2], ret[1]); return ret; }; hyperpoint ret0 = zth(z); hyperpoint ret1 = zth(z + cld(1e-3, 0)); hyperpoint ret2 = zth(z + cld(0, 1e-3)); return (ret1[1] - ret0[1]) * (ret2[0] - ret0[0]) < (ret2[1] - ret0[1]) * (ret1[0] - ret0[0]) ? 1 : -1; } /** get the current orientation of the view */ EX transmatrix& get_view_orientation() { return prod ? NLP : View; } /** rotate the view using the given rotation matrix */ EX void rotate_view(transmatrix T) { transmatrix& which = get_view_orientation(); which = T * which; if(!prod && !nonisotropic) current_display->which_copy = T * current_display->which_copy; } /** shift the view according to the given tangent vector */ EX transmatrix get_shift_view_of(const hyperpoint H, const transmatrix V) { if(!nonisotropic) { return rgpushxto0(direct_exp(lp_iapply(H), 100)) * V; } else if(!nisot::geodesic_movement) { transmatrix IV = inverse(V); nisot::fixmatrix(IV); const transmatrix V1 = inverse(IV); return V1 * eupush(IV * eupush(H) * V1 * C0); } else { return inverse(nisot::parallel_transport(inverse(V), -H)); } } /** shift the view according to the given tangent vector */ EX void shift_view(hyperpoint H) { auto oView = View; View = get_shift_view_of(H, View); auto& wc = current_display->which_copy; if(nonisotropic) { transmatrix ioldv = eupush(tC0(inverse(oView))); transmatrix newv = inverse(eupush(tC0(inverse(View)))); wc = newv * ioldv * wc; } else wc = get_shift_view_of(H, wc); } void multiply_view(transmatrix T) { View = T * View; auto& wc = current_display->which_copy; wc = T * wc; } EX void shift_view_to(hyperpoint H) { if(!nonisotropic) multiply_view(gpushxto0(H)); else shift_view(-inverse_exp(H, iTable, false)); } EX void shift_view_towards(hyperpoint H, ld l) { if(!nonisotropic && !prod) multiply_view(rspintox(H) * xpush(-l) * spintox(H)); else if(nonisotropic && !nisot::geodesic_movement) shift_view(tangent_length(H-C0, -l)); else { hyperpoint ie = inverse_exp(H, iTable, true); if(prod) ie = lp_apply(ie); shift_view(tangent_length(ie, -l)); } } }