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aura in the fisheye projection, also minor optimization

This commit is contained in:
Zeno Rogue 2019-10-05 12:33:00 +02:00
parent 13ea55b233
commit 08108c342c
1 changed files with 23 additions and 10 deletions
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33
graph.cpp
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@ -2874,11 +2874,15 @@ EX ld straightDownSpeed;
array<array<int,4>,AURA+1> aurac;
EX bool haveaura() {
if(!(vid.aurastr>0 && !svg::in && (auraNOGL || vid.usingGL))) return false;
if(sphere && mdAzimuthalEqui()) return true;
int haveaura_cached;
/** 0 = no aura, 1 = standard aura, 2 = Joukowsky aura */
EX int haveaura() {
if(!(vid.aurastr>0 && !svg::in && (auraNOGL || vid.usingGL))) return 0;
if(sphere && mdAzimuthalEqui()) return 0;
if(among(pmodel, mdJoukowsky, mdJoukowskyInverted) && hyperbolic && models::model_transition < 1)
return true;
return 2;
if(pmodel == mdFisheye) return 1;
return pmodel == mdDisk && (!sphere || vid.alpha > 10) && !euclid;
}
@ -2886,8 +2890,9 @@ vector<pair<int, int> > auraspecials;
int auramemo;
EX void clearaura() {
if(!haveaura()) return;
EX void clearaura() {
haveaura_cached = haveaura();
if(!haveaura_cached) return;
for(int a=0; a<AURA; a++) for(int b=0; b<4; b++)
aurac[a][b] = 0;
auraspecials.clear();
@ -2895,23 +2900,25 @@ EX void clearaura() {
}
void apply_joukowsky_aura(hyperpoint& h) {
bool joukowsky = among(pmodel, mdJoukowskyInverted, mdJoukowsky) && hyperbolic && models::model_transition < 1;
if(joukowsky) {
if(haveaura_cached == 2) {
hyperpoint ret;
applymodel(h, ret);
h = ret;
}
if(nonisotropic) {
h = lp_apply(inverse_exp(h, iTable, true));
}
}
EX void addauraspecial(hyperpoint h, color_t col, int dir) {
if(!haveaura()) return;
if(!haveaura_cached) return;
apply_joukowsky_aura(h);
int r = int(2*AURA + dir + atan2(h[1], h[0]) * AURA / 2 / M_PI) % AURA;
auraspecials.emplace_back(r, col);
}
EX void addaura(hyperpoint h, color_t col, int fd) {
if(!haveaura()) return;
if(!haveaura_cached) return;
apply_joukowsky_aura(h);
int r = int(2*AURA + atan2(h[1], h[0]) * AURA / 2 / M_PI) % AURA;
@ -2946,6 +2953,12 @@ void drawaura() {
if(vid.stereo_mode) return;
double rad = current_display->radius;
if(sphere && !mdAzimuthalEqui()) rad /= sqrt(vid.alpha*vid.alpha - 1);
if(hyperbolic && pmodel == mdFisheye) {
ld h = 1;
h /= vid.fisheye_param;
ld nrad = h / sqrt(2 + h*h);
rad *= nrad;
}
for(int v=0; v<4; v++) sumaura(v);
for(auto& p: auraspecials) {