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small hyperboloid projection

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Zeno Rogue
2024-06-27 22:32:09 +02:00
parent 8aee11dd5f
commit 3a255db948
3 changed files with 16 additions and 2 deletions
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1
hyper.h
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@@ -258,6 +258,7 @@ struct projection_configuration {
ld offside, offside2; ld offside, offside2;
ld aitoff_parameter, miller_parameter, loximuthal_parameter, winkel_parameter; ld aitoff_parameter, miller_parameter, loximuthal_parameter, winkel_parameter;
bool show_hyperboloid_flat; bool show_hyperboloid_flat;
bool small_hyperboloid;
bool collignon_reflected; bool collignon_reflected;
string formula; string formula;
eModel basic_model; eModel basic_model;

8
hypgraph.cpp
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@@ -1007,6 +1007,8 @@ EX void apply_other_model(shiftpoint H_orig, hyperpoint& ret, eModel md) {
} }
#endif #endif
if(pconf.small_hyperboloid) H = mid(H, C0);
ret = H; ret = H;
if(sphere && pmodel == mdHyperboloidFlat) { if(sphere && pmodel == mdHyperboloidFlat) {
@@ -2673,7 +2675,9 @@ EX void draw_model_elements() {
case mdHemisphere: { case mdHemisphere: {
if(!pconf.show_hyperboloid_flat) return; if(!pconf.show_hyperboloid_flat) return;
if(models::is_hyperboloid(pmodel)) { if(models::is_hyperboloid(pmodel)) {
#if CAP_QUEUE #if CAP_QUEUE
if(pconf.small_hyperboloid) queueaction(PPR::CIRCLE, [] { glflush(); pconf.small_hyperboloid = false; });
curvepoint(point3(0,0,1)); curvepoint(point3(0,0,1));
curvepoint(point3(0,0,-pconf.alpha)); curvepoint(point3(0,0,-pconf.alpha));
queuecurve(shiftless(Id), ringcolor, 0, PPR::CIRCLE); queuecurve(shiftless(Id), ringcolor, 0, PPR::CIRCLE);
@@ -2709,6 +2713,7 @@ EX void draw_model_elements() {
a[0] = -a[0]; a[0] = -a[0];
curvepoint(a); curvepoint(a);
queuecurve(shiftless(Id), ringcolor, 0, PPR::CIRCLE); queuecurve(shiftless(Id), ringcolor, 0, PPR::CIRCLE);
if(pconf.small_hyperboloid) queueaction(PPR::CIRCLE, [] { glflush(); pconf.small_hyperboloid = true; });
#endif #endif
} }
return; return;
@@ -3004,8 +3009,9 @@ EX void draw_boundary(int w) {
queuereset(pmodel, p1); queuereset(pmodel, p1);
} }
int mul = pconf.small_hyperboloid ? 2 : 1;
for(ld t=0; t<=360; t ++) for(ld t=0; t<=360; t ++)
curvepoint(xspinpush0(t * degree, it ? M_PI - mz : mz)); curvepoint(xspinpush0(t * degree, it ? M_PI - mz * mul: mz * mul));
if(p1 == PPR::OUTCIRCLE) { queuecurve_reuse(shiftless(Id), lc, fc1, p1); fc1 = 0; p1 = PPR::CIRCLE; } if(p1 == PPR::OUTCIRCLE) { queuecurve_reuse(shiftless(Id), lc, fc1, p1); fc1 = 0; p1 = PPR::CIRCLE; }
queuecurve(shiftless(Id), lc, fc1, p1); queuecurve(shiftless(Id), lc, fc1, p1);

9
models.cpp
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@@ -140,6 +140,7 @@ projection_configuration::projection_configuration() {
*ptr_ball = cspin(1, 2, 20._deg); *ptr_ball = cspin(1, 2, 20._deg);
ptr_camera = new transmatrix; *ptr_camera = Id; ptr_camera = new transmatrix; *ptr_camera = Id;
offside = 0; offside2 = M_PI; offside = 0; offside2 = M_PI;
small_hyperboloid = false;
} }
EX namespace models { EX namespace models {
@@ -625,8 +626,10 @@ EX namespace models {
add_edit(vpconf.fisheye_alpha); add_edit(vpconf.fisheye_alpha);
} }
if(is_hyperboloid(vpmodel)) if(is_hyperboloid(vpmodel)) {
add_edit(pconf.show_hyperboloid_flat); add_edit(pconf.show_hyperboloid_flat);
add_edit(pconf.small_hyperboloid);
}
if(vpmodel == mdCollignon) if(vpmodel == mdCollignon)
add_edit(vpconf.collignon_parameter); add_edit(vpconf.collignon_parameter);
@@ -1041,6 +1044,10 @@ EX namespace models {
param_b(p.show_hyperboloid_flat, sp+"hyperboloid-flat", true) param_b(p.show_hyperboloid_flat, sp+"hyperboloid-flat", true)
-> editable("show flat", 'b'); -> editable("show flat", 'b');
param_b(p.small_hyperboloid, sp+"hyperboloid-small", true)
-> editable("small hyperboloid model", 't')
-> help("as in Clifford algebras");
param_f(p.skiprope, sp+"mobius", 0) param_f(p.skiprope, sp+"mobius", 0)
-> editable(0, 360, 15, "Möbius transformations", "", 'S')->unit = "°"; -> editable(0, 360, 15, "Möbius transformations", "", 'S')->unit = "°";