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hyperrogue/rogueviz/presentation.cpp

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#ifndef PRESENTATION_CPP
#define PRESENTATION_CPP
#include "../rogueviz/rogueviz.h"
namespace rogueviz {
#if CAP_RVSLIDES
namespace pres {
/* maks graphs in presentations */
grapher::grapher(ld _minx, ld _miny, ld _maxx, ld _maxy) : minx(_minx), miny(_miny), maxx(_maxx), maxy(_maxy) {
auto& cd = *current_display;
ld xpixels = 2 * min(cd.xcenter - cd.xmin, cd.xmax - cd.xcenter);
ld ypixels = 2 * min(cd.ycenter - cd.ymin, cd.ymax - cd.ycenter);
ld sca = min(abs(xpixels / (maxx-minx)), abs(ypixels / (maxy-miny)));
ld medx = (minx + maxx) / 2;
ld medy = (miny + maxy) / 2;
hyperpoint zero = atscreenpos(cd.xcenter - sca * medx, cd.ycenter + sca * medy, 1) * C0;
hyperpoint zero10 = atscreenpos(cd.xcenter - sca * medx + sca, cd.ycenter + sca * medy, 1) * C0;
hyperpoint zero01 = atscreenpos(cd.xcenter - sca * medx, cd.ycenter + sca * medy - sca, 1) * C0;
T = shiftless(Id);
T.T[LDIM] = zero;
T.T[0] = zero10 - zero;
T.T[1] = zero01 - zero;
T.T = transpose(T.T);
}
void grapher::line(hyperpoint h1, hyperpoint h2, color_t col) {
curvepoint(h1);
curvepoint(h2);
queuecurve(T, col, 0, PPR::LINE).flags |= POLY_FORCEWIDE;
}
void grapher::arrow(hyperpoint h1, hyperpoint h2, ld sca, color_t col) {
line(h1, h2, col);
if(!sca) return;
hyperpoint h = h2 - h1;
ld siz = hypot_d(2, h);
h *= sca / siz;
curvepoint(h2);
curvepoint(h2 - spin(15._deg) * h);
curvepoint(h2 - spin(-15._deg) * h);
curvepoint(h2);
queuecurve(T, col, col, PPR::LINE);
}
shiftmatrix grapher::pos(ld x, ld y, ld sca) {
transmatrix P = Id;
P[0][0] = sca;
P[1][1] = sca;
P[0][LDIM] = x;
P[1][LDIM] = y;
return T * P;
}
hyperpoint p2(ld x, ld y) { return LDIM == 2 ? point3(x, y, 1) : point31(x, y, 0); }
/* temporary hooks */
using namespace hr::tour;
void add_stat(presmode mode, const bool_reaction_t& stat) {
add_temporary_hook(mode, hooks_prestats, 200, stat);
}
void no_other_hud(presmode mode) {
add_temporary_hook(mode, hooks_prestats, 300, [] { return true; });
clearMessages();
}
/** disable all the HyperRogue game stuff */
void non_game_slide(presmode mode) {
if(mode == pmStart) {
tour::slide_backup(game_keys_scroll, true);
tour::slide_backup(mapeditor::drawplayer, false);
tour::slide_backup(no_find_player, true);
tour::slide_backup(playermoved, false);
tour::slide_backup(vid.axes, 0);
tour::slide_backup(vid.drawmousecircle, false);
tour::slide_backup(draw_centerover, false);
}
no_other_hud(mode);
}
void non_game_slide_scroll(presmode mode) {
non_game_slide(mode);
slide_backup(smooth_scrolling, true);
}
void white_screen(presmode mode, color_t col) {
if(mode == pmStart) {
tour::slide_backup(backcolor, col);
tour::slide_backup(ringcolor, color_t(0));
tour::slide_backup<color_t>(dialog::dialogcolor, 0);
tour::slide_backup<color_t>(forecolor, 0);
tour::slide_backup<color_t>(bordcolor, 0xFFFFFFFF);
tour::slide_backup(vid.aurastr, 0);
}
}
void empty_screen(presmode mode, color_t col) {
if(mode == pmStart) {
tour::slide_backup(nomap, true);
}
white_screen(mode, col);
}
void slide_error(presmode mode, string s) {
empty_screen(mode, 0x400000);
add_stat(mode, [s] {
dialog::init();
dialog::addTitle(s, 0xFF0000, 150);
dialog::display();
return true;
});
}
map<string, texture::texture_data> textures;
void draw_texture(texture::texture_data& tex, ld dx, ld dy, ld scale1) {
static vector<glhr::textured_vertex> rtver(4);
int fs = inHighQual ? 0 : 2 * vid.fsize;
ld tx = tex.tx;
ld ty = tex.ty;
ld scalex = (vid.xres/2 - fs) / (current_display->radius * tx);
ld scaley = (vid.yres/2 - fs) / (current_display->radius * ty);
ld scale = min(scalex, scaley);
scale *= 2;
for(int i=0; i<4; i++) {
ld cx[4] = {1,0,0,1};
ld cy[4] = {1,1,0,0};
rtver[i].texture[0] = (tex.base_x + (cx[i] ? tex.strx : 0.)) / tex.twidth;
rtver[i].texture[1] = (tex.base_y + (cy[i] ? tex.stry : 0.)) / tex.theight;
rtver[i].coords[0] = (cx[i]*2-1) * scale * tx * scale1 + dx;
rtver[i].coords[1] = (cy[i]*2-1) * scale * ty * scale1 + dy;
rtver[i].coords[2] = 1;
rtver[i].coords[3] = 1;
}
glhr::be_textured();
current_display->set_projection(0, false);
glBindTexture(GL_TEXTURE_2D, tex.textureid);
glhr::color2(0xFFFFFFFF);
glhr::id_modelview();
current_display->set_mask(0);
glhr::prepare(rtver);
glhr::set_depthtest(false);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
void sub_picture(string s, flagtype flags, ld dx, ld dy, ld scale) {
if(!textures.count(s)) {
auto& tex = textures[s];
println(hlog, "rt = ", tex.readtexture(s));
println(hlog, "gl = ", tex.loadTextureGL());
}
auto& tex = textures[s];
flat_model_enabler fme;
draw_texture(tex, dx, dy, scale);
}
void show_picture(presmode mode, string s, flagtype flags) {
if(mode == pmStartAll) {
auto& tex = textures[s];
println(hlog, "rt = ", tex.readtexture(s));
println(hlog, "gl = ", tex.loadTextureGL());
}
add_stat(mode, [s, flags] { sub_picture(s, flags); return false; });
}
string latex_packages =
"\\usepackage{amsmath}\n"
"\\usepackage{amssymb}\n"
"\\usepackage{amsfonts}\n"
"\\usepackage{varwidth}\n"
"\\usepackage{amsfonts}\n"
"\\usepackage{enumitem}\n"
"\\usepackage[utf8]{inputenc}\n"
"\\usepackage[T1]{fontenc}\n"
"\\usepackage{color}\n"
"\\usepackage{graphicx}\n"
"\\definecolor{remph}{rgb}{0,0.5,0}\n"
"\\renewcommand{\\labelitemi}{{\\color{remph}$\\blacktriangleright$}}\n";
string latex_cachename(string s, flagtype flags) {
unsigned hash = 0;
for(char c: latex_packages + s) hash = (hash << 3) ^ hash ^ c ^ flags;
return format("latex-cache/%08X.png", hash);
}
/* note: you pdftopng from the xpdf package for this to work! */
string gen_latex(presmode mode, string s, int res, flagtype flags) {
string filename = latex_cachename(s, flags);
if(mode == pmStartAll) {
if(!file_exists(filename)) {
hr::ignore(system("mkdir latex-cache"));
FILE *f = fopen("latex-cache/rogueviz-latex.tex", "w");
fprintf(f,
"\\documentclass[border=2pt]{standalone}\n"
"%s"
"\\begin{document}\n"
"\\begin{varwidth}{\\linewidth}\n"
"%s"
"\\end{varwidth}\n"
"\\end{document}\n", latex_packages.c_str(), s.c_str());
fclose(f);
hr::ignore(system("cd latex-cache; pdflatex rogueviz-latex.tex"));
string pngline =
(flags & LATEX_COLOR) ?
"cd latex-cache; pdftopng -alpha -r " + its(res) + " rogueviz-latex.pdf t"
: "cd latex-cache; pdftopng -r " + its(res) + " rogueviz-latex.pdf t";
println(hlog, "calling: ", pngline);
hr::ignore(system(pngline.c_str()));
rename("latex-cache/t-000001.png", filename.c_str());
}
}
return filename;
}
void show_latex(presmode mode, string s) {
show_picture(mode, gen_latex(mode, s, 2400, 0));
}
void dialog_add_latex(string s, color_t col, int size, flagtype flags) {
string fn = gen_latex(pmStart, s, 600, flags);
if(!textures.count(fn)) {
gen_latex(pmStartAll, s, 600, flags);
auto& tex = textures[fn];
tex.original = true;
tex.twidth = 4096;
println(hlog, "rt = ", tex.readtexture(fn));
if(!(flags & LATEX_COLOR))
for(int y=0; y<tex.theight; y++)
for(int x=0; x<tex.twidth; x++) {
auto& pix = tex.get_texture_pixel(x, y);
if(y <= tex.base_y || y >= tex.base_y + tex.stry || x <= tex.base_x || x >= tex.base_x + tex.strx) { pix = 0; continue; }
int dark = 255 - part(pix, 1);
pix = 0xFFFFFF + (dark << 24);
}
println(hlog, "gl = ", tex.loadTextureGL());
println(hlog, "fn is ", fn);
}
dialog::addCustom(size, [s, fn, col] {
auto& tex = textures[fn];
flat_model_enabler fme;
ld tx = tex.tx;
ld ty = tex.ty;
int size = dialog::tothei - dialog::top;
ld scale = size / 116. / 2;
static vector<glhr::textured_vertex> rtver(4);
for(int i=0; i<4; i++) {
ld cx[4] = {1,0,0,1};
ld cy[4] = {1,1,0,0};
rtver[i].texture[0] = (tex.base_x + (cx[i] ? tex.strx : 0.)) / tex.twidth;
rtver[i].texture[1] = (tex.base_y + (cy[i] ? tex.stry : 0.)) / tex.theight;
ld x = dialog::dcenter + (cx[i]*2-1) * scale * tx;
ld y = (dialog::top + dialog::tothei)/2 + (cy[i]*2-1) * scale * ty;
rtver[i].coords = glhr::pointtogl( atscreenpos(x, y, 1) * C0 );
}
glhr::be_textured();
current_display->set_projection(0, false);
glBindTexture(GL_TEXTURE_2D, tex.textureid);
glhr::color2(col);
glhr::id_modelview();
current_display->set_mask(0);
glhr::prepare(rtver);
glhr::set_depthtest(false);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
});
}
/** possible values:
* 0 = never display latex
* 1 = if a file exists in the cache, use it
* 2 = otherwise, use pdflatex and xpdf to generate it
*/
int rv_latex = 1;
map<string, bool> file_exists_cache;
void dialog_may_latex(string latex, string normal, color_t col, int size, flagtype flags) {
bool use_latex = rv_latex == 2;
if(rv_latex == 1) {
string filename = latex_cachename(latex, flags);
if(!file_exists_cache.count(filename)) file_exists_cache[filename] = file_exists(filename);
if(file_exists_cache[filename]) use_latex = true;
}
if(use_latex) {
if(flags & LATEX_COLOR) col = 0xFFFFFFFF;
dialog_add_latex(latex, (col << 8) | 0xFF, size * 3/2, flags);
}
else {
dialog::addInfo(normal, col);
dialog::items.back().scale = size;
}
}
int video_start = 0;
void read_all(int fd, void *buf, int cnt) {
char *cbuf = (char*) buf;
while(cnt > 0) {
int qt = read(fd, cbuf, cnt);
if(qt <= 0) break;
cbuf += qt;
cnt -= qt;
}
}
/* note: this loads the whole animation uncompressed into memory, so it is suitable only for short presentations */
void show_animation(presmode mode, string s, int sx, int sy, int frames, int fps) {
#if CAP_VIDEO
if(mode == pmStartAll || mode == pmStart) {
/* load only once */
if(textures.count(s + "@0")) return;
/* actually load */
array<int, 2> tab;
if(pipe(&tab[0])) {
addMessage(format("Error: %s", strerror(errno)));
return;
}
int pid = fork();
fflush(stdout);
fprintf(stderr, "pipe is %d:%d\n", tab[0], tab[1]);
if(pid == 0) {
fprintf(stderr, "in child\n");
fprintf(stderr, "making fformat\n");
string fformat = "ffmpeg -y -i " + s + " -f rawvideo -pix_fmt bgra /dev/fd/" + its(tab[1]);
int sys = system(fformat.c_str());
::close(tab[0]);
fprintf(stderr, "system call returned %d: %s\n", sys, strerror(errno));
::close(tab[1]);
exit(0);
}
::close(tab[1]);
for(int i=0; i<frames; i++) {
auto& tex = textures[s + "@" + its(i)];
tex.strx = tex.tx = sx;
tex.stry = tex.ty = sy;
tex.twidth = next_p2(tex.tx);
tex.theight = next_p2(tex.ty);
tex.base_x = tex.base_y = 0;
tex.texture_pixels.resize(tex.twidth * tex.theight);
for(int y=0; y<sy; y++) {
read_all(tab[0], &tex.texture_pixels[tex.twidth * y], 4 * sx);
}
println(hlog, "load frame ", i, " = ", tex.loadTextureGL(), " color = ", tex.texture_pixels[0]);
// tex.loadTextureGL();
}
::close(tab[0]);
println(hlog, "waiting");
wait(nullptr);
println(hlog, "waited");
video_start = ticks;
}
add_stat(mode, [s, frames, fps] {
int f = (ticks - video_start) / 1000. * fps;
f %= frames;
auto& tex = textures[s + "@" + its(f)];
flat_model_enabler fme;
draw_texture(tex);
return false;
});
#endif
}
void choose_presentation() {
cmode = sm::NOSCR;
gamescreen();
getcstat = ' ';
dialog::init(XLAT("presentations"), 0xFFD500);
ss::for_all_slideshows([] (string title, slide *sl, char ch) {
dialog::addItem(title, ch);
dialog::add_action([sl] {
tour::slides = sl;
if(!tour::texts) nomenukey = true;
popScreenAll();
tour::start();
if(!tour::on) tour::start();
});
});
dialog::addBreak(100);
dialog::addBoolItem_action(XLAT("enable/disable texts"), tour::texts, '7');
dialog::display();
}
int phooks =
0
+ addHook(hooks_configfile, 100, [] {
param_i(rv_latex, "rv_latex");
})
+ addHook(dialog::hooks_display_dialog, 100, [] () {
if(current_screen_cfunction() == showStartMenu) {
dialog::addBreak(100);
dialog::addBigItem(XLAT("RogueViz demos"), 'd');
dialog::add_action([] () { pushScreen(choose_presentation); });
}
});
void use_angledir(presmode mode, bool reset) {
if(mode == pmStart && reset)
angle = 0, dir = -1;
add_temporary_hook(mode, shmup::hooks_turn, 200, [] (int i) {
angle += dir * i / 500.;
if(angle > 90._deg) angle = 90._deg;
if(angle < 0) angle = 0;
return false;
});
if(mode == pmKey) dir = -dir;
}
void compare_projections(presmode mode, eModel a, eModel b) {
static function<void()> w;
if(mode == pmStart) {
w = wrap_drawfullmap;
tour::slide_backup(wrap_drawfullmap, w);
wrap_drawfullmap = [a, b] {
if(1) {
dynamicval<ld> xmin(current_display->xmin, 0);
dynamicval<ld> xmax(current_display->xmax, 0.49);
dynamicval<eModel> pm(pmodel, a);
calcparam();
w();
current_display->xmin = .51;
current_display->xmax = 1;
pmodel = b;
calcparam();
w();
}
calcparam();
};
}
}
/* default RogueViz tour */
vector<slide> rvslides_mixed;
vector<slide> rvslides_data;
extern vector<slide> rvslides_default;
void add_end(vector<slide>& s) {
s.emplace_back(
slide{"THE END", 99, LEGAL::NONE | FINALSLIDE,
"Press '5' to leave the presentation.",
[] (presmode mode) {
if(mode == pmStart) firstland = specialland = laIce;
if(mode == 4) restart_game(rg::tour);
}
});
}
slide *gen_rvtour_data() {
rvslides_data = rvslides_default;
callhooks(hooks_build_rvtour, "data", rvslides_data);
add_end(rvslides_data);
return &rvslides_data[0];
}
slide *gen_rvtour_mixed() {
rvslides_mixed.emplace_back(slide{
"RogueViz", 999, LEGAL::ANY,
"This presentation is mostly composed from various unsorted demos, mostly posted on Twitter and YouTube. Press Enter to continue, ESC to look at other functions of this presentation.",
[] (presmode mode) {
slide_url(mode, 'y', "YouTube link", "https://www.youtube.com/user/ZenoTheRogue");
slide_url(mode, 't', "Twitter link", "https://twitter.com/zenorogue/");
}
});
callhooks(hooks_build_rvtour, "mixed", rvslides_mixed);
add_end(rvslides_mixed);
return &rvslides_mixed[0];
}
vector<slide> rvslides_default = {
{"intro", 999, LEGAL::ANY,
"Hyperbolic space is great "
"for visualizing some kinds of data because of the vast amount "
"of space.\n\n"
"Press '5' to switch to the standard HyperRogue tutorial. "
"Press ESC to look at other functions of this presentation."
,
[] (presmode mode) {
slidecommand = "the standard presentation";
if(mode == pmStartAll) firstland = specialland = laPalace;
if(mode == 4) {
tour::slides = default_slides;
while(tour::on) restart_game(rg::tour);
firstland = specialland = laIce;
tour::start();
}
}
},
{"straight lines in the Palace", 999, LEGAL::ANY,
"One simple slide about HyperRogue. Press '5' to show some hyperbolic straight lines.",
[] (presmode mode) {
using namespace linepatterns;
slidecommand = "toggle the Palace lines";
if(mode == 4) patPalace.color = (patPalace.color == 0xFFD500FF ? 0 : 0xFFD500FF);
if(mode == 3) patPalace.color = 0xFFD50000;
}
},
};
map<string, gamedata> switch_gd;
EX void switch_game(string from, string to) {
if(game_active) switch_gd[from].storegame();
if(switch_gd.count(to)) {
switch_gd[to].restoregame();
switch_gd.erase(to);
}
}
/** have a separate 'game' that lives between several slides */
void uses_game(presmode mode, string name, reaction_t launcher, reaction_t restore) {
if(mode == pmStart) {
switch_game("main", name);
if(!game_active) launcher();
else restore();
restorers.push_back([name] { switch_game(name, "main"); });
}
}
void latex_slide(presmode mode, string s, flagtype flags, int size) {
empty_screen(mode);
add_stat(mode, [=] {
tour::slide_backup(no_find_player, true);
if(flags & sm::SIDE) {
cmode |= sm::SIDE;
dynamicval<bool> db(nomap, (flags & sm::NOSCR));
dynamicval<color_t> dc(modelcolor, nomap ? 0 : 0xFF);
dynamicval<color_t> dc2(bordcolor, 0);
gamescreen();
callhooks(hooks_latex_slide);
}
else
gamescreen();
dialog::init();
dialog_may_latex(
s,
"(LaTeX is off)",
dialog::dialogcolor, size, LATEX_COLOR
);
dialog::display();
return true;
});
no_other_hud(mode);
}
int pres_hooks =
addHook(hooks_slide, 100, [] (int mode) {
if(currentslide == 0 && slides == default_slides) {
slidecommand = "RogueViz presentation";
if(mode == 1)
help +=
"\n\nYour version of HyperRogue is compiled with RogueViz. "
"Press '5' to switch to the RogueViz slides. Watching the "
"common HyperRogue tutorial first is useful too, "
"as an introduction to hyperbolic geometry.";
if(mode == 4) {
while(tour::on) restart_game(rg::tour);
pushScreen(choose_presentation);
}
}
}) +
addHook(dialog::hooks_display_dialog, 100, [] () {
if(current_screen_cfunction() == showGameMenu) {
dialog::addItem(XLAT("RogueViz demos"), 'd');
dialog::add_action_push(choose_presentation);
}
}) +
addHook_slideshows(300, [] (tour::ss::slideshow_callback cb) {
if(rogueviz::pres::rvslides_data.empty()) pres::gen_rvtour_data();
cb(XLAT("non-Euclidean geometry in data analysis"), &pres::rvslides_data[0], 'd');
if(rogueviz::pres::rvslides_mixed.empty()) pres::gen_rvtour_mixed();
cb(XLAT("unsorted RogueViz demos"), &pres::rvslides_mixed[0], 'u');
}) +
0;
void launch_slideshow_by_name(string s) {
ss::for_all_slideshows([s] (string title, slide *sl, char ch) {
println(hlog, "comparing ", s, " to ", title);
if(s.size() == 1 ? s[0] == ch : appears(title, s)) {
tour::slides = sl;
nomenukey = true;
popScreenAll();
tour::start();
if(!tour::on) tour::start();
}
});
}
int runslide =
addHook(hooks_resetGL, 100, [] {
textures.clear();
})
+ arg::add3("-slides", [] {
arg::shift(); launch_slideshow_by_name(arg::args());
}) + arg::add3("-slide-textoff", [] {
tour::texts = false;
}) + arg::add3("-slide", [] {
arg::shift(); launch_slideshow_by_name(arg::args());
presentation(pmStop);
arg::shift(); string s = arg::args();
int i;
currentslide = -1;
for(i=0; (i==0 || !(slides[i-1].flags & FINALSLIDE)); i++) {
if(appears(slides[i].name, s)) {
currentslide = i;
break;
}
}
if(currentslide == -1) {
int j = atoi(s.c_str());
if(j >= 0 && j < i) currentslide = j;
else currentslide = 0;
}
presentation(pmStart);
})
+ arg::add3("-presangle", [] {
arg::shift_arg_formula(angle);
dir = 0;
})
;
}
#endif
}
#endif
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