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https://github.com/zenorogue/hyperrogue.git
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372 lines
11 KiB
C++
372 lines
11 KiB
C++
// Hyperbolic Rogue: staircase simulation in RogueViz
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// Copyright (C) 2011-2018 Zeno and Tehora Rogue, see 'hyper.cpp' for details
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// Kohonen's self-organizing networks.
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// This is a part of RogueViz, not a part of HyperRogue.
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#include "rogueviz.h"
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namespace rogueviz { namespace staircase {
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ld scurvature = 0;
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ld acurvature = 0;
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ld global_r;
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ld szoom = 5;
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ld progress = 0;
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ld strafex, strafey;
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hyperpoint spcoord(hyperpoint h) {
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ld phi = h[0], y = h[1], z = h[2], r = global_r;
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dynamicval<eGeometry> gw(geometry, rug::gwhere == gElliptic ? gSphere : rug::gwhere);
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hyperpoint inh = xpush(-acurvature*(y + r - frac(progress))/szoom) * xspinpush0(M_PI/2, acurvature*z);
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hyperpoint i = inh * (hdist0(inh) / hypot_d(2, inh));
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ld aphi = (r+phi + floor(progress))*M_PI/6;
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return hpxyz(i[1] * sin(aphi), i[1] * cos(aphi), i[0]);
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}
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rug::rugpoint *pt(hyperpoint h, hyperpoint c) {
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auto r = rug::addRugpoint(C0, -1);
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r->flat = spcoord(h);
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r->x1 = c[0];
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r->y1 = c[1];
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r->valid = true;
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return r;
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}
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void addRect(hyperpoint h, hyperpoint hx, hyperpoint hy, hyperpoint v, hyperpoint vx, hyperpoint vy, int ix, int iy) {
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vector<vector<rug::rugpoint*> > rps(iy+1, vector<rug::rugpoint*> (ix+1));
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for(int y=0; y<=iy; y++)
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for(int x=0; x<=ix; x++) {
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rps[y][x] = pt(h+hx*x/ix+hy*y/iy, v+vx*x/ix+vy*y/iy);
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}
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for(int y=0; y<iy; y++)
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for(int x=0; x<ix; x++)
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rug::addTriangle(rps[y][x], rps[y+1][x], rps[y][x+1]),
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rug::addTriangle(rps[y+1][x+1], rps[y][x+1], rps[y+1][x]);
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}
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void addTri(hyperpoint h, hyperpoint hx, hyperpoint hy, hyperpoint v, hyperpoint vx, hyperpoint vy, int i) {
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vector<vector<rug::rugpoint*> > rps(i+1, vector<rug::rugpoint*> (i+1));
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for(int y=0; y<=i; y++)
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for(int x=0; x<=i; x++) {
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if(x+y <= i)
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rps[y][x] = pt(h+hx*x/i+hy*y/i, v+vx*x/i+vy*y/i);
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}
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for(int y=0; y<i; y++)
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for(int x=0; x<i; x++) {
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if(x+y < i)
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rug::addTriangle(rps[y][x], rps[y+1][x], rps[y][x+1]);
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if(x+y+2 <= i)
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rug::addTriangle(rps[y+1][x+1], rps[y][x+1], rps[y+1][x]);
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}
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}
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bool need_texture = true;
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#if CAP_TEXTURE
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texture::texture_data tdata; // = texture::config.data;
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#endif
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void make_texture() {
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#if CAP_TEXTURE
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printf("make texture\n");
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need_texture = false;
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tdata.whitetexture();
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int tw = tdata.twidth;
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printf("tw = %d\n", tw);
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int fw = tw / 4;
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auto pix = [&] (int k, int x, int y) -> unsigned& {
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return tdata.texture_pixels[y * tw + x + (k&3) * fw + (k>>2) * fw * tw];
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};
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for(int y=0; y<tw; y++)
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for(int x=0; x<tw; x++)
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pix(0,x,y) = rand();
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for(int y=0; y<=fw; y++)
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for(int x=0; x<=fw; x++) {
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typedef long long ll;
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pix(0,x,y) = 0xFF000000 + 0x10101 * ((x*ll(fw-x)*y*(fw-y)*255)/ll(fw/2)/(fw/2)/(fw-fw/2)/(fw-fw/2));
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pix(2,x,y) = 0xFF400000 + 0x10000 * (y * 63 / fw);
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pix(8,x,y) = 0xFF101010;
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pix(10,x,y) = 0xFF000000 + gradient(0, 0xFFD500, 0, x*(fw-x), fw*fw/4);
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pix(5,x,y) = 0xFF000000 + gradient(0, 0x804000, -1, sin(2*M_PI*8*y/fw), 1);
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pix(7,x,y) = 0xFF000000 + gradient(0, 0x808080, 0, x*ll(fw-x)*y*(fw-y), ll(fw/2)*(fw/2)*(fw-fw/2)*(fw-fw/2));
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}
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tdata.loadTextureGL();
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#endif
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}
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int savetex;
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#if ISWEB
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int prec = 1;
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int maxr = 100;
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#else
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int prec = 4;
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int maxr = 1000;
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#endif
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bool on;
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void make_staircase() {
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// vid.stereo_mode = current_display->sODS;
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rug::no_fog = true;
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println(hlog, "scurvature = ", scurvature, " progress = ", progress, " strafe=", strafex, ",", strafey);
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rug::renderonce = true;
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rug::rug_perspective = true;
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if(scurvature > -1e-6 && scurvature < 1e-6) {
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rug::gwhere = gEuclid;
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acurvature = 1;
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}
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else if(scurvature < 0) {
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rug::gwhere = gNormal;
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acurvature = -scurvature;
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}
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else {
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rug::gwhere = gSphere;
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acurvature = scurvature;
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}
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rug::ruggospeed = acurvature;
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vid.ipd = 0.15 * acurvature;
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if(!rug::rugged || !staircase::on) {
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staircase::on = true;
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rug::reopen();
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}
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if(need_texture) {
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make_texture();
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#if CAP_TEXTURE
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rug::alternate_texture = tdata.textureid;
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#endif
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}
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rug::clear_model();
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printf("compute\n");
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for(int r=-maxr; r<maxr; r++) {
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if(scurvature < -1e-6 && abs(r * acurvature) > 7*12) continue;
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if(scurvature > 1e-6 && abs(acurvature*r/szoom) > M_PI) continue;
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global_r = r;
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// step
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addRect(hpxyz(0,0,1), hpxyz(0,0,1), hpxyz(1,0,0), hpxy(0,0), hpxy(.25,0), hpxy(0,.25), prec, prec);
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// step connection
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addRect(hpxyz(1,0,1), hpxyz(0,0,1), hpxyz(0,1,0), hpxy(0.75,0.25), hpxy(.25,0), hpxy(0,.25), prec, prec);
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// triangle inner side
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addTri(hpxyz(1,0,1), hpxyz(0,1,0), hpxyz(-1,0,0), hpxy(.5,0), hpxy(.125,.125), hpxy(0,.125), prec);
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// rectangle under triangle
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addRect(hpxyz(0,0,1), hpxyz(1,1,0), hpxyz(0,1,0), hpxy(.5,.125), hpxy(.125,0), hpxy(0,.125), prec, prec);
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// barrier post
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addRect(hpxyz(.45,0,1.1), hpxyz(.1,.1,0), hpxyz(0,-3,0), hpxy(0,.5), hpxy(.25,0), hpxy(0,.25), 2, prec);
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// barrier
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addRect(hpxyz(.45,-3,1), hpxyz(0,0,.2), hpxyz(1,1,0), hpxy(.5,.5), hpxy(.25,0), hpxy(0,.25), 1, prec);
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// outer wall
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addRect(hpxyz(0,0,2), hpxyz(1,1,0), hpxyz(0,12,0), hpxy(.25,.25), hpxy(.25,0), hpxy(0,.25), prec, prec);
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// lower wall
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addRect(hpxyz(0,1,1), hpxyz(1,1,0), hpxyz(0,0,1), hpxy(.5,0), hpxy(.25,0), hpxy(0,.25), prec, prec);
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}
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printf("push\n");
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rug::push_all_points(0, strafex * acurvature);
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rug::push_all_points(1, strafey * acurvature);
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for(auto p: rug::points) p->valid = true;
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rug::good_shape = true;
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printf("done (%d points)\n", isize(rug::points));
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rug::lowrug = 1e-2 * acurvature;
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rug::hirug = 1e3 * acurvature;
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}
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// -0.50 .. 0.16
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int ctick;
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void check() {
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if(ctick && ctick < ticks) {
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calcparam();
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make_staircase();
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ctick = 0;
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}
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if(on && !rug::rugged) {
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on = false;
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rug::alternate_texture = 0;
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rug::no_fog = false;
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rug::ruggospeed = 1;
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staircase::on = false;
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}
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}
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void showMenu() {
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cmode = sm::SIDE | sm::MAYDARK;
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gamescreen(0);
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dialog::init(XLAT("Spiral Staircase"), iinf[itPalace].color, 150, 0);
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dialog::addSelItem(" " + XLAT("X"), fts(strafex), 'x');
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dialog::addSelItem(" " + XLAT("Y"), fts(strafey), 'y');
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dialog::addSelItem(" " + XLAT("curvature"), fts(scurvature), 'c');
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dialog::addBreak(100);
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dialog::addItem(XLAT("disable menu"), SDLK_ESCAPE);
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dialog::addBoolItem(XLAT("low quality"), prec == 1, '1');
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dialog::addBoolItem(XLAT("medium quality"), prec == 2, '2');
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#if !ISWEB
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dialog::addBoolItem(XLAT("high quality"), prec == 4, '3');
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#endif
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dialog::addItem(XLAT("take me back"), 'q');
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dialog::display();
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keyhandler = [] (int sym, int uni) {
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dialog::handleNavigation(sym, uni);
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if(uni == 'x') {
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dialog::editNumber(strafex, -1, 1, .05, 1, XLAT("X"),
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XLAT("Also changed with keys A/D")
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);
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dialog::reaction = [] () { ctick = ticks + 500; };
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}
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else if(uni == 'y') {
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dialog::editNumber(strafey, -1, 1, .05, 1, XLAT("Y"),
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XLAT("Also changed with keys W/S")
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);
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dialog::reaction = [] () { ctick = ticks + 500; };
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}
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else if(uni == 'c') {
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dialog::editNumber(scurvature, -1, 1, .05, 1, XLAT("curvature"),
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XLAT("Also changed with keys K/L. Press G for the golden spiral")
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);
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dialog::reaction = [] () { ctick = ticks + 500; };
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}
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else if(uni == 'w') {
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strafey += .1;
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ctick = ticks + 200;
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}
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else if(uni == 's') {
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strafey -= .1;
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ctick = ticks + 200;
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}
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else if(uni == 'd') {
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strafex += .1;
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ctick = ticks + 200;
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}
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else if(uni == 'a') {
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strafex -= .1;
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ctick = ticks + 200;
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}
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else if(uni == 'k') {
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scurvature += .02;
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ctick = ticks + 200;
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}
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else if(uni == 'l') {
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scurvature -= .02;
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ctick = ticks + 200;
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}
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else if(uni == 'p') {
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progress += .1;
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ctick = ticks + 200;
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}
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else if(uni == 'g') {
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scurvature = -4 * log((sqrt(5)+1)/2) / 2.4;
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ctick = ticks + 200;
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}
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else if(uni == '1') {
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prec = 1, maxr = 100;
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make_staircase();
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}
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else if(uni == '2') {
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prec = 2, maxr = 300;
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make_staircase();
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}
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#if !ISWEB
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else if(uni == '3') {
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prec = 4, maxr = 1000;
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make_staircase();
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}
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#endif
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else if(uni == 'q') {
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ctick = 0;
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rug::close();
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popScreen();
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}
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else if(doexiton(sym, uni)) popScreen();
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};
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}
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// see: https://www.youtube.com/watch?v=HZNRo6mr5pk
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void staircase_video(int from, int num, int step) {
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int TSIZE = rug::texturesize; // recommended 4096
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resetbuffer rb;
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renderbuffer rbuf(TSIZE, TSIZE, true);
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vid.stereo_mode = sODS;
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for(int i=from; i<num; i+=step) {
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ld t = i * 1. / num;
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t = pow(t, .3);
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staircase::scurvature = t * t * (t-.95) * 4;
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staircase::progress = i / 30.;
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staircase::strafex = (sin(i / 240.) - sin(i / 501.)) / 2.5;
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staircase::strafey = (cos(i / 240.) - cos(i / 501.)) / 2.5;
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staircase::make_staircase();
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rbuf.enable();
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dynamicval<int> vx(vid.xres, TSIZE);
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dynamicval<int> vy(vid.yres, TSIZE);
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dynamicval<int> vxc(current_display->xcenter, TSIZE/2);
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dynamicval<int> vyc(current_display->ycenter, TSIZE/2);
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printf("draw scene\n");
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rug::drawRugScene();
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IMAGESAVE(rbuf.render(), ("staircase/" + format("%05d", i) + IMAGEEXT).c_str());
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printf("GL %5d/%5d\n", i, num);
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}
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rb.reset();
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}
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#if CAP_COMMANDLINE
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int readArgs() {
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using namespace arg;
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// #1: load the samples
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if(argis("-stair")) {
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showstartmenu = false;
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ctick = ticks + 2000;
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pushScreen(showMenu);
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}
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else if(argis("-staircase_video")) {
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staircase_video(0, 128*30, 1); // goal: 168*30
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}
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else return 1;
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return 0;
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}
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#endif
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int phooks = addHook(hooks_args, 100, readArgs)
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+ addHook(hooks_fixticks, 100, check)
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+ addHook(hooks_rvmenu_replace, 100, [] {
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if(staircase::on) { staircase::showMenu(); return true; }
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return false;
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})
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+ addHook(rvtour::hooks_build_rvtour, 100, [] (vector<tour::slide>& v) {
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using namespace tour;
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v.push_back(
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tour::slide{"Spiral Staircase", 62, LEGAL::NONE | QUICKGEO,
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"Spiral Staircase Demo. Press '5' to change the curvature or other parameters.",
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[] (presmode mode) {
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if(mode == 1) staircase::make_staircase();
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if(mode == 3) rug::close();
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slidecommand = "staircase menu";
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if(mode == 4) pushScreen(staircase::showMenu);
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}}
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);
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});
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}}
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