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Code Issues Releases Wiki Activity

3D display of Crystal

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This commit is contained in:
Zeno Rogue 2018-11-30 20:29:14 +01:00
parent c6aa79b0dd
commit 3182600a58
4 changed files with 173 additions and 50 deletions
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187
crystal.cpp
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@ -14,6 +14,15 @@ const int MAXDIM = 7;
typedef array<int, MAXDIM> coord;
static const coord c0 = {};
typedef array<ld, MAXDIM> ldcoord;
static const ldcoord ldc0 = {};
ldcoord told(coord c) { ldcoord a; for(int i=0; i<MAXDIM; i++) a[i] = c[i]; return a; }
ldcoord operator + (ldcoord a, ldcoord b) { ldcoord r; for(int i=0; i<MAXDIM; i++) r[i] = a[i] + b[i]; return r; }
ldcoord operator * (ldcoord a, int v) { ldcoord r; for(int i=0; i<MAXDIM; i++) r[i] = a[i] * v; return r; }
ldcoord operator / (ldcoord a, int v) { ldcoord r; for(int i=0; i<MAXDIM; i++) r[i] = a[i] / v; return r; }
int tocode(int cname) { return (1 << (cname >> 1)); }
void resize2(vector<vector<int>>& v, int a, int b, int z) {
@ -22,8 +31,8 @@ void resize2(vector<vector<int>>& v, int a, int b, int z) {
for(auto& w: v) w.resize(b, z);
}
const int FULLSTEP = 16;
const int HALFSTEP = 8;
const int FULLSTEP = 2;
const int HALFSTEP = 1;
struct crystal_structure {
int dir;
@ -286,23 +295,21 @@ heptagon *get_heptagon_at(coord c, int deg) {
h->c7 = newCell(deg, h);
h->distance = 0;
for(int i=0; i<cs.dim; i++) h->distance += abs(c[i]);
h->distance /= 2;
hcoords[h] = c;
// for(int i=0; i<6; i++) crystalstep(h, i);
return h;
}
coord get_coord(cell *c) {
ldcoord get_coord(cell *c) {
if(c->master->c7 != c) {
coord res = c0;
for(int i=0; i<c->type; i+=2) {
coord co = hcoords[c->move(i)->master];
for(int d=0; d<cs.dim; d++) res[d] += co[d];
}
for(int d=0; d<cs.dim; d++) res[d] = (2 * res[d] + c->type/2) / c->type;
return res;
ldcoord res = ldc0;
for(int i=0; i<c->type; i+=2)
res = res + told(hcoords[c->cmove(i)->master]);
return res * 2 / c->type;
}
else
return hcoords[c->master];
return told(hcoords[c->master]);
}
struct hrmap_crystal : hrmap {
@ -348,7 +355,7 @@ void create_step(heptagon *h, int d) {
}
else {
auto coc = add(add(co, lw, HALFSTEP), lw+1, HALFSTEP);
auto hc = get_heptagon_at(coc, HALFSTEP);
auto hc = get_heptagon_at(coc, 8);
for(int a=0; a<8; a+=2) {
hc->c.connect(a, heptspin(h, lw.spin));
if(h->modmove(lw.spin-1)) {
@ -366,41 +373,12 @@ array<array<int,2>, MAX_EDGE> distlimit_table = {{
{6, 4}, {5, 3}, {4, 3}, {4, 3}, {3, 2}, {3, 2}, {3, 2}, {3, 2}, {3, 2}
}};
int readArgs() {
using namespace arg;
if(0) ;
else if(argis("-crystal")) {
stop_game();
geometry = gCrystal; variation = eVariation::pure;
shift(); int N = argi();
ginf[gCrystal].sides = N;
ginf[gCrystal].vertex = 4;
if(N < MAX_EDGE)
ginf[gCrystal].distlimit = distlimit_table[N];
add_bitruncation = false;
}
else if(argis("-crystalb")) {
stop_game();
geometry = gCrystal; variation = eVariation::bitruncated;
ginf[gCrystal].sides = 8;
ginf[gCrystal].vertex = 3;
ginf[gCrystal].distlimit = {7, 5};
add_bitruncation = true;
}
else if(argis("-cview")) {
view_coordinates = true;
}
else return 1;
return 0;
}
color_t colorize(cell *c) {
coord co = get_coord(c);
ldcoord co = get_coord(c);
color_t res;
res = 0;
for(int i=0; i<3; i++)
res |= ((i == 2 && S7 == 5) ? (co[i] ? 255 : 0) : (128 + co[i] * 3)) << (8*i);
res |= ((int)(((i == 2 && S7 == 5) ? (128 + co[i] * 50) : (128 + co[i] * 50)))) << (8*i);
return res;
}
@ -452,6 +430,129 @@ int distance(cell *c1, cell *c2) {
}
}
ld crug_rotation[MAXDIM][MAXDIM];
int ho = 1;
void init_rotation() {
for(int i=0; i<MAXDIM; i++)
for(int j=0; j<MAXDIM; j++)
crug_rotation[i][j] = i == j ? 1/2. : 0;
if(ho & 1) {
for(int i=cs.dim-1; i>=1; i--) {
ld c = cos(M_PI / 2 / (i+1));
ld s = sin(M_PI / 2 / (i+1));
for(int j=0; j<cs.dim; j++)
tie(crug_rotation[j][0], crug_rotation[j][i]) =
make_pair(
crug_rotation[j][0] * s + crug_rotation[j][i] * c,
-crug_rotation[j][i] * s + crug_rotation[j][0] * c
);
}
}
}
void next_home_orientation() {
ho++;
init_rotation();
}
hyperpoint coord_to_flat(ldcoord co) {
hyperpoint res = hpxyz(0, 0, 0);
for(int a=0; a<MAXDIM; a++)
for(int b=0; b<3; b++)
res[b] += crug_rotation[b][a] * co[a];
return res;
}
void switch_z_coordinate() {
for(int i=0; i<cs.dim; i++) {
ld tmp = crug_rotation[i][2];
for(int u=2; u<cs.dim-1; u++) crug_rotation[i][u] = crug_rotation[i][u+1];
crug_rotation[i][cs.dim-1] = tmp;
}
}
void apply_rotation(const transmatrix t) {
for(int i=0; i<MAXDIM; i++) {
hyperpoint h;
for(int j=0; j<3; j++) h[j] = crug_rotation[i][j];
h = t * h;
for(int j=0; j<3; j++) crug_rotation[i][j] = h[j];
}
}
void build_rugdata() {
using namespace rug;
rug::clear_model();
rug::good_shape = true;
rug::vertex_limit = 0;
for(const auto& gp: gmatrix) {
cell *c = gp.first;
const transmatrix& V = gp.second;
rugpoint *v = addRugpoint(tC0(V), 0);
auto co = get_coord(c);
v->flat = coord_to_flat(co);
v->valid = true;
rugpoint *p[MAX_EDGE];
for(int i=0; i<c->type; i++) {
p[i] = addRugpoint(V * get_corner_position(c, i), 0);
p[i]->valid = true;
if(VALENCE == 4)
p[i]->flat = coord_to_flat((get_coord(c->cmove(i)) + get_coord(c->cmodmove(i-1))) / 2);
else
p[i]->flat = coord_to_flat((get_coord(c->cmove(i)) + get_coord(c->cmodmove(i-1)) + co) / 3);
}
for(int i=0; i<c->type; i++) addTriangle(v, p[i], p[(i+1) % c->type]);
}
}
int readArgs() {
using namespace arg;
if(0) ;
else if(argis("-crystal")) {
PHASE(2);
stop_game();
geometry = gCrystal; variation = eVariation::pure;
shift(); int N = argi();
ginf[gCrystal].sides = N;
ginf[gCrystal].vertex = 4;
if(N < MAX_EDGE)
ginf[gCrystal].distlimit = distlimit_table[N];
add_bitruncation = false;
}
else if(argis("-crystalb")) {
PHASE(2);
stop_game();
geometry = gCrystal; variation = eVariation::bitruncated;
ginf[gCrystal].sides = 8;
ginf[gCrystal].vertex = 3;
ginf[gCrystal].distlimit = {7, 5};
add_bitruncation = true;
}
else if(argis("-cview")) {
view_coordinates = true;
}
else if(argis("-crug")) {
PHASE(3);
if(rug::rugged) rug::close();
calcparam();
rug::reopen();
init_rotation();
surface::sh = surface::dsCrystal;
rug::good_shape = true;
}
else return 1;
return 0;
}
auto crystalhook = addHook(hooks_args, 100, readArgs)
+ addHook(hooks_drawcell, 100, crystal_cell);

6
hyper.h
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@ -3447,7 +3447,7 @@ extern int ewhichscreen;
#if CAP_SURFACE
namespace surface {
enum eShape { dsNone, dsTractricoid, dsDini, dsKuen, dsHyperlike, dsHyperboloid, dsHemisphere };
enum eShape { dsNone, dsTractricoid, dsDini, dsKuen, dsHyperlike, dsHyperboloid, dsHemisphere, dsCrystal };
extern eShape sh;
void show_surfaces();
void run_shape(eShape);
@ -4141,6 +4141,10 @@ namespace crystal {
int distance(cell *c1, cell *c2);
hrmap *new_map();
void create_step(heptagon *h, int d);
void build_rugdata();
void apply_rotation(const transmatrix t);
void switch_z_coordinate();
void next_home_orientation();
}
hyperpoint get_warp_corner(cell *c, int cid);

28
rug.cpp
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@ -14,6 +14,8 @@ bool rug_failure = false;
namespace rug {
bool in_crystal() { return surface::sh == surface::dsCrystal; }
bool computed = false;
vector<rugpoint*> points;
@ -1018,6 +1020,11 @@ void addNewPoints() {
void physics() {
if(in_crystal()) {
crystal::build_rugdata();
return;
}
if(good_shape) return;
auto t = SDL_GetTicks();
@ -1442,7 +1449,8 @@ ld protractor = 0;
void apply_rotation(const transmatrix& t) {
if(!rug_perspective) currentrot = t * currentrot;
for(auto p: points) p->flat = t * p->flat;
if(in_crystal()) crystal::apply_rotation(t);
else for(auto p: points) p->flat = t * p->flat;
}
void move_forward(ld distance) {
@ -1468,11 +1476,17 @@ bool handlekeys(int sym, int uni) {
return true;
}
else if(uni == '2') {
apply_rotation(rotmatrix(M_PI, 0, 2));
if(in_crystal())
crystal::switch_z_coordinate();
else
apply_rotation(rotmatrix(M_PI, 0, 2));
return true;
}
else if(uni == '3') {
apply_rotation(rotmatrix(M_PI/2, 0, 2));
if(in_crystal())
crystal::next_home_orientation();
else
apply_rotation(rotmatrix(M_PI/2, 0, 2));
return true;
}
#if !CAP_HOLDKEYS
@ -1598,8 +1612,12 @@ void actDraw() {
if(finger_center)
perform_finger();
else {
if(keystate[SDLK_HOME]) qm++, t = inverse(currentrot);
if(keystate[SDLK_END]) qm++, t = currentrot * rotmatrix(alpha, 0, 1) * inverse(currentrot);
if(keystate[SDLK_HOME] && !in_crystal()) qm++, t = inverse(currentrot);
if(keystate[SDLK_END]) {
qm++;
if(in_crystal()) t = t * rotmatrix(alpha, 0, 1);
else t = currentrot * rotmatrix(alpha, 0, 1) * inverse(currentrot);
}
if(keystate[SDLK_DOWN]) qm++, t = t * rotmatrix(alpha, 1, 2);
if(keystate[SDLK_UP]) qm++, t = t * rotmatrix(alpha, 2, 1);
if(keystate[SDLK_LEFT]) qm++, t = t * rotmatrix(alpha, 0, 2);

2
surface.cpp
View File

@ -11,7 +11,7 @@ using namespace hyperpoint_vec;
ld sech(ld d) { return 1 / cosh(d); }
string shape_name[] = { "hypersian rug", "tractricoid", "Dini's surface", "Kuen surface", "concave barrel",
"hyperboloid", "hemisphere" };
"hyperboloid", "hemisphere", "crystal" };
eShape sh;