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hyperrogue/rogueviz/presentation.cpp
Zeno Rogue b1f4f92f2c added CAP_VIDEO guards
2020-09-23 18:42:47 +02:00

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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 */
struct grapher {
ld minx, miny, maxx, maxy;
shiftmatrix T;
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 line(hyperpoint h1, hyperpoint h2, color_t col) {
curvepoint(h1);
curvepoint(h2);
queuecurve(T, col, 0, PPR::LINE).flags |= POLY_FORCEWIDE;
}
void arrow(hyperpoint h1, hyperpoint h2, ld sca) {
line(h1, h2, 0xFF);
hyperpoint h = h2 - h1;
ld siz = hypot_d(2, h);
h *= sca / siz;
curvepoint(h2);
curvepoint(h2 - spin(15*degree) * h);
curvepoint(h2 - spin(-15*degree) * h);
curvepoint(h2);
queuecurve(T, 0xFF, 0xFF, PPR::LINE);
}
shiftmatrix 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;
template<class T, class U> void add_temporary_hook(int mode, hookset<T>& m, int prio, U&& hook) {
if(mode == pmStart) {
int p = addHook(m, prio, hook);
on_restore([&m, p] {
delHook(m, p);
});
}
}
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();
}
void empty_screen(presmode mode, color_t col = 0xFFFFFFFF) {
if(mode == pmStart) {
tour::slide_backup(nomap, true);
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);
}
}
map<string, texture::texture_data> textures;
void draw_texture(texture::texture_data& tex) {
static vector<glhr::textured_vertex> rtver(4);
ld tx = tex.tx;
ld ty = tex.ty;
ld scalex = (vid.xres/2 - 2 * vid.fsize) / (current_display->radius * tx);
ld scaley = (vid.yres/2 - 2 * vid.fsize) / (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;
rtver[i].coords[1] = (cy[i]*2-1) * scale * ty;
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 show_picture(presmode mode, string s) {
if(mode == pmStartAll) {
auto& tex = textures[s];
println(hlog, "rt = ", tex.readtexture(s));
println(hlog, "gl = ", tex.loadTextureGL());
}
add_stat(mode, [s] {
auto& tex = textures[s];
flat_model_enabler fme;
draw_texture(tex);
return false;
});
}
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) {
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() {
gamescreen(2);
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();
});
});
dialog::addBreak(100);
dialog::addBoolItem_action(XLAT("enable/disable texts"), tour::texts, '7');
dialog::display();
}
int phooks =
0
+ addHook(dialog::hooks_display_dialog, 100, [] () {
if(current_screen_cfunction() == showStartMenu) {
dialog::addBreak(100);
dialog::addBigItem(XLAT("presentations"), 'p');
dialog::add_action([] () { pushScreen(choose_presentation); });
dialog::addInfo(XLAT("presentation"));
}
});
static ld angle = 0;
static int dir = -1;
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 > M_PI/2) angle = M_PI/2;
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;
extern vector<slide> rvslides_default;
slide *gen_rvtour() {
rvslides = rvslides_default;
callhooks(hooks_build_rvtour, rvslides);
rvslides.emplace_back(
slide{"THE END", 99, LEGAL::ANY | FINALSLIDE,
"Press '5' to leave the presentation.",
[] (presmode mode) {
firstland = specialland = laIce;
if(mode == 4) restart_game(rg::tour);
}
});
return &rvslides[0];
}
vector<slide> rvslides_default = {
{"RogueViz", 999, LEGAL::ANY,
"This is a presentation of RogueViz, which "
"is an adaptation of HyperRogue as a visualization tool "
"rather than a game. 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 = 0xFFD500FF;
if(mode == 3) patPalace.color = 0xFFD50000;
}
},
};
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) {
slides = gen_rvtour();
while(tour::on) restart_game(rg::tour);
tour::start();
}
}
}) +
addHook(tour::ss::hooks_extra_slideshows, 100, [] (tour::ss::slideshow_callback cb) {
if(rogueviz::pres::rvslides.empty()) pres::gen_rvtour();
cb(XLAT("RogueViz mixed bag"), &pres::rvslides[0], 'r');
}) +
0;
}
#endif
}
#endif
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