hyperrogue/rogueviz/inner-maps.cpp

// compile with:
// ./mymake -O3 inner-maps
// used in: https://twitter.com/zenorogue/status/1212408644941295619

// run with:
// ./hyper -innner-map -noscr -canvas r -canvas i -wsh 0 -smart 4 -shott 0 -alpha 1

#include "rogueviz.h"

namespace hr {

namespace inner {

bool out = true;

EX struct renderbuffer *buf1, *buf2;

map<cell*, basic_textureinfo> lti;

ld mdist;

bool for_klein = false;

ld alpha = -.7;

cell *rendercenter;
shiftmatrix rendercenterV;

bool auto_move = false;

ld texture_alpha = 1;
ld inner_alpha = 1;
bool dense = false;

// should do 30x -- temporarily disabled

ld iterations = 1;

ld iterations_bank;

void gentexture() {
  if(out) iterations_bank += iterations;
  while(iterations_bank >= 1) {
    iterations_bank -= 1;
    println(hlog, "# = ", isize(lti));
    dynamicval<bool> b(out, false);
    dynamicval<ld> va(pconf.alpha, texture_alpha);
    if(!buf1) {
      buf1 = new renderbuffer(rug::texturesize, rug::texturesize, true);
      buf2 = new renderbuffer(rug::texturesize, rug::texturesize, true);
      }
    resetbuffer rb;
    rug::calcparam_rug();
    models::configure();

    buf1->enable();
    buf1->clear(0);
    buf2->use_as_texture();

    draw_boundary(0);
    draw_boundary(1);
  
    draw_model_elements();
    drawthemap();
    drawqueue();
    calcparam();

    rb.reset();
    
    swap(buf1, buf2);
    
    rendercenter = centerover;
    rendercenterV = gmatrix[centerover];

    }
  }

void frame() {
  gentexture();
  if(auto_move) { 
    color_t col = minf[moReptile].color;
    drawMonsterType(moReptile, NULL, shiftless(spin(alpha)), col, mdist, col);
    mapeditor::drawplayer = false;
    }
  }

bool done;

hpcshape edgeshape;

hpcshape circ;

ld crad = dense ? .5 : 1.82;
ld ceps = .02;

ld crad_p;

void need_redo() {
  done = false;
  }

void make_shape() {
  if(done) return;
  done = true;
  cgi.bshape(circ, PPR::WALL);
  circ.flags |= POLY_TRIANGLES;
  int k = for_klein ? 1 : 2;
  int maxz = for_klein ? 120 : 30;
  for(int z=0; z<maxz; z++) {
    ld ra = (z+0.)/maxz * crad, rb = (z+1.)/maxz * crad;
    for(int i=0; i<360; i+=k) {
      ld a = i * degree;
      ld b = (i+k) * degree;

      cgi.hpcpush(xspinpush0(a, ra));
      cgi.hpcpush(xspinpush0(a, rb));
      cgi.hpcpush(xspinpush0(b, rb));
      
      if(z) {
        cgi.hpcpush(xspinpush0(a, ra));
        cgi.hpcpush(xspinpush0(b, ra));
        cgi.hpcpush(xspinpush0(b, rb));
        }
      }
    }
  cgi.finishshape();
  println(hlog, "circ vertices = ", circ.e - circ.s);

  cgi.bshape(edgeshape, PPR::WALL);
  for(int i=0; i<=360; i+=k) {
    ld a = i * degree;
    cgi.hpcpush(xspinpush0(a, crad - ceps));
    }
  for(int i=0; i<=360; i+=k) {
    ld a = i * degree;
    cgi.hpcpush(xspinpush0(a, crad + ceps));
    }
  cgi.finishshape();
  
  cgi.extra_vertices();

  hyperpoint ph = xspinpush0(0, crad);
  ph /= (inner_alpha+ph[2]);
  crad_p = ph[0];
  }

set<cell*> gs;

bool render(cell *c, const shiftmatrix& V) {
  if(!buf1 || !buf2 || !rendercenter) return false;
  make_shape();
  if(false && !gs.count(c)) {
    gs.insert(c);
    c->mondir = hrand(c->type);
    dont_face_pc = true;
    switch(hrand(100)) {
      case 0:
        c->monst = moOrangeDog;
        break;
      case 1:
        c->item = itHell;
        break;
      case 2:
        c->monst = moSalamander;
        break;
      case 3:
        c->monst = moButterfly;
        break;
      case 4:
        c->monst = moSparrowhawk;
        break;
      }
    }
  if(dense ? pseudohept(c) : cdist50(c) == 0) {
    dynamicval<color_t> po(poly_outline, 0x000000FF);
    auto& p = lti[c];
    p.texture_id = buf2->renderedTexture;
    p.tvertices.clear();

  /*inner_alpha = anyshiftclick ? 1 : 0;
  hyperpoint ph = xspinpush0(0, crad);
  ph /= (inner_alpha+ph[2]);
  crad_p = ph[0];
  */

    for(int i=circ.s; i<circ.e; i++) {
      hyperpoint h = cgi.hpc[i];
      // hyperboloid to Poincare
      h /= (inner_alpha + h[2]);
      // scale up
      h /= crad_p;
      h *= .99999999;
      // Poincare to hyperboloid
      
      h = perspective_to_space(h, inner_alpha, cgclass);

      /*
      ld hr = sqhypot_d(2, h);  
      ld hz = (1 + hr) / (1 - hr);
      h[0] *= (hz+1);
      h[1] *= (hz+1);
      h[2] = hz;
      */

      // move according to V
      h = rendercenterV.T * inverse(ggmatrix(rendercenter).T) * V.T * h;
      // texture coordinates
      // hyperpoint scr;
      // dynamicval<ld> b(pconf.alpha, anyshiftclick ? pconf.alpha : texture_alpha);
      // applymodel(h, scr);
      hyperpoint scr = h / (texture_alpha + h[2]);
      p.tvertices.push_back(glhr::makevertex(.5 + .5 * scr[0], .5 - .5 * scr[1], 0));
      }
    queuepoly(V, circ, 0xFFFFFFFF).tinf = &p;
    queuepoly(V, edgeshape, darkena(c->landparam, 0, 0xFF));
    }
  return false;
  }

void shift() {
  if(auto_move) {
    centerover = currentmap->gamestart();
    mdist = (ticks % 10000) * 6 / 10000.;
    View = spin(alpha) * xpush(-mdist) * spin(-alpha);
    anims::moved();
    centerover->monst = moNone;
    forCellEx(c1, centerover) c1->monst = moNone;
    }
  }

void show() {
  cmode = sm::SIDE | sm::MAYDARK;
  gamescreen(0);
  dialog::init(XLAT("inner maps"), 0xFFFFFFFF, 150, 0);
  add_edit(texture_alpha);
  add_edit(inner_alpha);
  add_edit(dense);
  add_edit(crad);
  add_edit(ceps);
  add_edit(auto_move);
  add_edit(iterations);
  dialog::addBack();
  dialog::display();
  }

void enable() {
  using rogueviz::rv_hook;
  rv_hook(hooks_frame, 100, frame);
  rv_hook(hooks_drawcell, 100, render);
  rv_hook(anims::hooks_anim, 100, shift);
  rv_hook(hooks_o_key, 80, [] (o_funcs& v) { v.push_back(named_dialog("inner maps", show)); });
  }

auto hook = arg::add3("-inner-map", enable) 
  + addHook(hooks_configfile, 100, [] {
    param_f(texture_alpha, "inner_talpha")
    ->editable(0, 5, .1, "texture projection distance", "", 't');
    param_f(inner_alpha, "inner_ialpha")
    ->editable(0, 5, .1, "inner projection distance", "", 'i')
    ->set_reaction(need_redo);
    param_b(dense, "inner_dense")
    ->editable("densely packed maps", 'd');
    param_f(crad, "inner_crad")
    ->editable(0, 10, .1, "radii of the inner maps", "", 'r')
    ->set_reaction(need_redo);
    param_f(ceps, "inner_ceps")
    ->editable(0, 0.1, .001, "map frame size", "", 'f')
    ->set_reaction(need_redo);
    param_b(auto_move, "auto_move")
    ->editable("animate", 'a');
    param_f(iterations, "inner_iterations")
    ->editable(0, 30, 0.2, "iterations per frame", 
      "How many times per frame should we re-render the map", 
      'i')
    ->set_reaction(need_redo);
    })
  + addHook(rogueviz::pres::hooks_build_rvtour, 52, [] (string s, vector<tour::slide>& v) {
      if(s != "projections") return;
      using namespace tour;

      v.push_back(slide{
        "projections/hyperbolic to hyperbolic", 10, LEGAL::NONE | QUICKGEO,

        "We can also project a hyperbolic plane to a hyperbolic plane of different curvature.\n\n"
        "Creatures living in the hyperbolic world may use the native Poincar<61> model to get conformal, circular, and totally useless maps of their whole world.\n\n"
        
        "Press 'o' to change the settings."
        ,
        [] (presmode mode) {
          slide_url(mode, 't', "Twitter link (with description)", "https://twitter.com/zenorogue/status/1212408644941295619");
          setCanvas(mode, 'r');
          
          if(mode == pmStart) {
            if(!shmup::on) restart_game(rg::shmup);
            slide_backup(mapeditor::drawplayer, true);
            enable();
            start_game();
            }
          }});
      });

}
}