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hyperrogue/rogueviz/staircase.cpp
Zeno Rogue 9d0a252d14 shift-awareness in rogueviz
2020-07-29 23:34:00 +02:00

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// Hyperbolic Rogue: staircase simulation in RogueViz
// Copyright (C) 2011-2018 Zeno and Tehora Rogue, see 'hyper.cpp' for details
// Kohonen's self-organizing networks.
// This is a part of RogueViz, not a part of HyperRogue.
#include "rogueviz.h"
namespace rogueviz { namespace staircase {
ld scurvature = 0;
ld acurvature = 0;
ld global_r;
ld szoom = 5;
ld progress = 0;
ld strafex, strafey;
hyperpoint spcoord(hyperpoint h) {
ld phi = h[0], y = h[1], z = h[2], r = global_r;
dynamicval<eGeometry> gw(geometry, rug::gwhere == gElliptic ? gSphere : rug::gwhere);
hyperpoint inh = xpush(-acurvature*(y + r - frac(progress))/szoom) * xspinpush0(M_PI/2, acurvature*z);
hyperpoint i = inh * (hdist0(inh) / hypot_d(2, inh));
ld aphi = (r+phi + floor(progress))*M_PI/6;
return hpxyz(i[1] * sin(aphi), i[1] * cos(aphi), i[0]);
}
rug::rugpoint *pt(hyperpoint h, hyperpoint c) {
auto r = rug::addRugpoint(shiftless(C0), -1);
r->native = spcoord(h);
r->x1 = c[0];
r->y1 = c[1];
r->valid = true;
return r;
}
void addRect(hyperpoint h, hyperpoint hx, hyperpoint hy, hyperpoint v, hyperpoint vx, hyperpoint vy, int ix, int iy) {
vector<vector<rug::rugpoint*> > rps(iy+1, vector<rug::rugpoint*> (ix+1));
for(int y=0; y<=iy; y++)
for(int x=0; x<=ix; x++) {
rps[y][x] = pt(h+hx*x/ix+hy*y/iy, v+vx*x/ix+vy*y/iy);
}
for(int y=0; y<iy; y++)
for(int x=0; x<ix; x++)
rug::addTriangle(rps[y][x], rps[y+1][x], rps[y][x+1]),
rug::addTriangle(rps[y+1][x+1], rps[y][x+1], rps[y+1][x]);
}
void addTri(hyperpoint h, hyperpoint hx, hyperpoint hy, hyperpoint v, hyperpoint vx, hyperpoint vy, int i) {
vector<vector<rug::rugpoint*> > rps(i+1, vector<rug::rugpoint*> (i+1));
for(int y=0; y<=i; y++)
for(int x=0; x<=i; x++) {
if(x+y <= i)
rps[y][x] = pt(h+hx*x/i+hy*y/i, v+vx*x/i+vy*y/i);
}
for(int y=0; y<i; y++)
for(int x=0; x<i; x++) {
if(x+y < i)
rug::addTriangle(rps[y][x], rps[y+1][x], rps[y][x+1]);
if(x+y+2 <= i)
rug::addTriangle(rps[y+1][x+1], rps[y][x+1], rps[y+1][x]);
}
}
bool need_texture = true;
#if CAP_TEXTURE
texture::texture_data tdata; // = texture::config.data;
#endif
void make_texture() {
#if CAP_TEXTURE
printf("make texture\n");
need_texture = false;
tdata.whitetexture();
int tw = tdata.twidth;
printf("tw = %d\n", tw);
int fw = tw / 4;
auto pix = [&] (int k, int x, int y) -> unsigned& {
return tdata.texture_pixels[y * tw + x + (k&3) * fw + (k>>2) * fw * tw];
};
for(int y=0; y<tw; y++)
for(int x=0; x<tw; x++)
pix(0,x,y) = rand();
for(int y=0; y<=fw; y++)
for(int x=0; x<=fw; x++) {
typedef long long ll;
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));
pix(2,x,y) = 0xFF400000 + 0x10000 * (y * 63 / fw);
pix(8,x,y) = 0xFF101010;
pix(10,x,y) = 0xFF000000 + gradient(0, 0xFFD500, 0, x*(fw-x), fw*fw/4);
pix(5,x,y) = 0xFF000000 + gradient(0, 0x804000, -1, sin(2*M_PI*8*y/fw), 1);
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));
}
tdata.loadTextureGL();
#endif
}
int savetex;
#if ISWEB
int prec = 1;
int maxr = 100;
#else
int prec = 4;
int maxr = 1000;
#endif
bool on;
void make_staircase() {
// vid.stereo_mode = current_display->sODS;
rug::no_fog = true;
println(hlog, "scurvature = ", scurvature, " progress = ", progress, " strafe=", strafex, ",", strafey);
rug::renderonce = true;
vid.rug_config.model = mdPerspective;
if(scurvature > -1e-6 && scurvature < 1e-6) {
rug::gwhere = rug::rgEuclid;
acurvature = 1;
}
else if(scurvature < 0) {
rug::gwhere = rug::rgHyperbolic;
acurvature = -scurvature;
}
else {
rug::gwhere = rug::rgSphere;
acurvature = scurvature;
}
rug::ruggospeed = acurvature;
vid.ipd = 0.15 * acurvature;
if(!rug::rugged || !staircase::on) {
staircase::on = true;
rug::reopen();
}
if(need_texture) {
make_texture();
#if CAP_TEXTURE
rug::alternate_texture = tdata.textureid;
#endif
}
rug::clear_model();
printf("compute\n");
for(int r=-maxr; r<maxr; r++) {
if(scurvature < -1e-6 && abs(r * acurvature) > 7*12) continue;
if(scurvature > 1e-6 && abs(acurvature*r/szoom) > M_PI) continue;
global_r = r;
// step
addRect(hpxyz(0,0,1), hpxyz(0,0,1), hpxyz(1,0,0), hpxy(0,0), hpxy(.25,0), hpxy(0,.25), prec, prec);
// step connection
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);
// triangle inner side
addTri(hpxyz(1,0,1), hpxyz(0,1,0), hpxyz(-1,0,0), hpxy(.5,0), hpxy(.125,.125), hpxy(0,.125), prec);
// rectangle under triangle
addRect(hpxyz(0,0,1), hpxyz(1,1,0), hpxyz(0,1,0), hpxy(.5,.125), hpxy(.125,0), hpxy(0,.125), prec, prec);
// barrier post
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);
// barrier
addRect(hpxyz(.45,-3,1), hpxyz(0,0,.2), hpxyz(1,1,0), hpxy(.5,.5), hpxy(.25,0), hpxy(0,.25), 1, prec);
// outer wall
addRect(hpxyz(0,0,2), hpxyz(1,1,0), hpxyz(0,12,0), hpxy(.25,.25), hpxy(.25,0), hpxy(0,.25), prec, prec);
// lower wall
addRect(hpxyz(0,1,1), hpxyz(1,1,0), hpxyz(0,0,1), hpxy(.5,0), hpxy(.25,0), hpxy(0,.25), prec, prec);
}
printf("push\n");
rug::push_all_points(0, strafex * acurvature);
rug::push_all_points(1, strafey * acurvature);
for(auto p: rug::points) p->valid = true;
rug::good_shape = true;
printf("done (%d points)\n", isize(rug::points));
rug::lowrug = 1e-2 * acurvature;
rug::hirug = 1e3 * acurvature;
}
// -0.50 .. 0.16
int ctick;
void check() {
if(ctick && ctick < ticks) {
calcparam();
make_staircase();
ctick = 0;
}
if(on && !rug::rugged) {
on = false;
rug::alternate_texture = 0;
rug::no_fog = false;
rug::ruggospeed = 1;
staircase::on = false;
}
}
void showMenu() {
cmode = sm::SIDE | sm::MAYDARK;
gamescreen(0);
dialog::init(XLAT("Spiral Staircase"), iinf[itPalace].color, 150, 0);
dialog::addSelItem(" " + XLAT("X"), fts(strafex), 'x');
dialog::addSelItem(" " + XLAT("Y"), fts(strafey), 'y');
dialog::addSelItem(" " + XLAT("curvature"), fts(scurvature), 'c');
dialog::addBreak(100);
dialog::addItem(XLAT("disable menu"), SDLK_ESCAPE);
dialog::addBoolItem(XLAT("low quality"), prec == 1, '1');
dialog::addBoolItem(XLAT("medium quality"), prec == 2, '2');
#if !ISWEB
dialog::addBoolItem(XLAT("high quality"), prec == 4, '3');
#endif
dialog::addItem(XLAT("take me back"), 'q');
dialog::display();
keyhandler = [] (int sym, int uni) {
dialog::handleNavigation(sym, uni);
if(uni == 'x') {
dialog::editNumber(strafex, -1, 1, .05, 1, XLAT("X"),
XLAT("Also changed with keys A/D")
);
dialog::reaction = [] () { ctick = ticks + 500; };
}
else if(uni == 'y') {
dialog::editNumber(strafey, -1, 1, .05, 1, XLAT("Y"),
XLAT("Also changed with keys W/S")
);
dialog::reaction = [] () { ctick = ticks + 500; };
}
else if(uni == 'c') {
dialog::editNumber(scurvature, -1, 1, .05, 1, XLAT("curvature"),
XLAT("Also changed with keys K/L. Press G for the golden spiral")
);
dialog::reaction = [] () { ctick = ticks + 500; };
}
else if(uni == 'w') {
strafey += .1;
ctick = ticks + 200;
}
else if(uni == 's') {
strafey -= .1;
ctick = ticks + 200;
}
else if(uni == 'd') {
strafex += .1;
ctick = ticks + 200;
}
else if(uni == 'a') {
strafex -= .1;
ctick = ticks + 200;
}
else if(uni == 'k') {
scurvature += .02;
ctick = ticks + 200;
}
else if(uni == 'l') {
scurvature -= .02;
ctick = ticks + 200;
}
else if(uni == 'p') {
progress += .1;
ctick = ticks + 200;
}
else if(uni == 'g') {
scurvature = -4 * log((sqrt(5)+1)/2) / 2.4;
ctick = ticks + 200;
}
else if(uni == '1') {
prec = 1, maxr = 100;
make_staircase();
}
else if(uni == '2') {
prec = 2, maxr = 300;
make_staircase();
}
#if !ISWEB
else if(uni == '3') {
prec = 4, maxr = 1000;
make_staircase();
}
#endif
else if(uni == 'q') {
ctick = 0;
rug::close();
popScreen();
}
else if(doexiton(sym, uni)) popScreen();
};
}
// see: https://www.youtube.com/watch?v=HZNRo6mr5pk
void staircase_video(int from, int num, int step) {
int TSIZE = rug::texturesize; // recommended 4096
resetbuffer rb;
renderbuffer rbuf(TSIZE, TSIZE, true);
vid.stereo_mode = sODS;
for(int i=from; i<num; i+=step) {
ld t = i * 1. / num;
t = pow(t, .3);
staircase::scurvature = t * t * (t-.95) * 4;
staircase::progress = i / 30.;
staircase::strafex = (sin(i / 240.) - sin(i / 501.)) / 2.5;
staircase::strafey = (cos(i / 240.) - cos(i / 501.)) / 2.5;
staircase::make_staircase();
rbuf.enable();
dynamicval<int> vx(vid.xres, TSIZE);
dynamicval<int> vy(vid.yres, TSIZE);
dynamicval<int> vxc(current_display->xcenter, TSIZE/2);
dynamicval<int> vyc(current_display->ycenter, TSIZE/2);
printf("draw scene\n");
rug::drawRugScene();
IMAGESAVE(rbuf.render(), ("staircase/" + format("%05d", i) + IMAGEEXT).c_str());
printf("GL %5d/%5d\n", i, num);
}
rb.reset();
}
#if CAP_COMMANDLINE
int readArgs() {
using namespace arg;
// #1: load the samples
if(argis("-stair")) {
showstartmenu = false;
ctick = ticks + 2000;
pushScreen(showMenu);
}
else if(argis("-staircase_video")) {
staircase_video(0, 128*30, 1); // goal: 168*30
}
else return 1;
return 0;
}
#endif
int phooks = addHook(hooks_args, 100, readArgs)
+ addHook(hooks_fixticks, 100, check)
+ addHook(hooks_rvmenu_replace, 100, [] {
if(staircase::on) { staircase::showMenu(); return true; }
return false;
})
+ addHook(rvtour::hooks_build_rvtour, 141, [] (vector<tour::slide>& v) {
using namespace tour;
v.push_back(
tour::slide{"unsorted/Spiral Staircase", 62, LEGAL::NONE | QUICKGEO,
"Spiral Staircase Demo. Press '5' to change the curvature or other parameters.",
[] (presmode mode) {
if(mode == 1) staircase::make_staircase();
if(mode == 3) rug::close();
slidecommand = "staircase menu";
if(mode == 4) pushScreen(staircase::showMenu);
}}
);
});
}}
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