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Code Issues Releases Wiki Activity

precise mouseh in 2.5D

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Zeno Rogue 2020-12-30 03:26:46 +01:00
parent 8a63307ed5
commit 2c59aa0e14
1 changed files with 37 additions and 28 deletions
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65
hypgraph.cpp
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@ -89,42 +89,51 @@ EX hyperpoint space_to_perspective(hyperpoint z, ld alpha IS(pconf.alpha)) {
return z;
}
EX shiftpoint find_on_screen(hyperpoint hxy, shiftpoint hint) {
shiftmatrix T = rgpushxto0(hint);
hyperpoint rel = WDIM == 2 && GDIM == 3 ? zpush0(cgi.FLOOR) : C0;
auto distance_at = [&] (const shiftmatrix& T1) {
hyperpoint h1;
applymodel(T1*rel, h1);
return sqhypot_d(2, hxy - h1);
};
ld best = distance_at(T);
for(int it=0; it<50; it++)
for(int s=0; s<4; s++) {
shiftmatrix T1 = T * spin(s * quarter_circle) * xpush(pow(1.2, -it));
ld dist = distance_at(T1);
if(dist < best) best = dist, T = T1;
if(mdBandAny()) {
T1.shift += 2 * M_PI;
dist = distance_at(T1);
if(dist < best) best = dist, T = T1;
T1.shift -= 4 * M_PI;
dist = distance_at(T1);
if(dist < best) best = dist, T = T1;
T1.shift += 2 * M_PI;
}
}
return T*rel;
}
EX shiftpoint gethyper(ld x, ld y) {
ld hx = (x - current_display->xcenter) / current_display->radius;
ld hy = (y - current_display->ycenter) / current_display->radius / pconf.stretch;
hyperpoint hxy = point3(hx, hy, 0);
if(WDIM == 2 && GDIM == 3) {
return mouseover ? find_on_screen(hxy, ggmatrix(mouseover) * C0) : shiftless(Hypc);
}
if(pmodel) {
ghxy = hxy;
shiftmatrix T = rgpushxto0(ghpm);
auto distance_at = [&] (const shiftmatrix& T1) {
hyperpoint h1;
applymodel(tC0(T1), h1);
return sqhypot_d(2, hxy - h1);
};
ld best = distance_at(T);
for(int it=0; it<50; it++)
for(int s=0; s<4; s++) {
shiftmatrix T1 = T * spin(s * quarter_circle) * xpush(pow(1.2, -it));
ld dist = distance_at(T1);
if(dist < best) best = dist, T = T1;
if(mdBandAny()) {
T1.shift += 2 * M_PI;
dist = distance_at(T1);
if(dist < best) best = dist, T = T1;
T1.shift -= 4 * M_PI;
dist = distance_at(T1);
if(dist < best) best = dist, T = T1;
T1.shift += 2 * M_PI;
}
}
return tC0(T);
return find_on_screen(hxy, ghpm);
}
if(pconf.camera_angle) camrotate(hx, hy);