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Code Issues Releases Wiki Activity

improvements to sphere flipping

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This commit is contained in:
Zeno Rogue
2022-12-04 14:48:12 +01:00
parent 0770a11164
commit 42f96b768c
5 changed files with 12 additions and 9 deletions
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2
basegraph.cpp
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@@ -927,7 +927,7 @@ EX int rhypot(int a, int b) { return (int) sqrt(a*a - b*b); }
EX ld realradius() {
ld vradius = current_display->radius;
if(sphere) {
if(sphereflipped())
if(flip_sphere())
vradius /= sqrt(pconf.alpha*pconf.alpha - 1);
else
vradius = 1e12; // use the following

6
drawing.cpp
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@@ -2184,7 +2184,7 @@ EX void quickqueue() {
/* todo */
ld xintval(const shiftpoint& h) {
if(sphereflipped()) return -h.h[2];
if(sphere_flipped) return -h.h[2];
if(hyperbolic) return -h.h[2];
return -intval(h.h, C0);
}
@@ -2198,7 +2198,7 @@ int qp[PMAX], qp0[PMAX];
color_t darken_color(color_t& color, bool outline) {
int alpha = color & 255;
if(sphere && pmodel == mdDisk && pconf.alpha <= 1)
if(sphere && pmodel == mdDisk && pconf.alpha <= 0.99)
return 0;
else {
if(outline && alpha < 255)
@@ -2279,7 +2279,7 @@ EX void draw_backside() {
ptd->draw();
}
spherespecial = sphereflipped() ? 1 : -1;
spherespecial = sphere_flipped ? 1 : -1;
reset_projection();
if(pmodel == mdRotatedHyperboles) {

3
graph.cpp
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@@ -5030,7 +5030,8 @@ EX bool nonisotropic_weird_transforms;
EX void make_actual_view() {
sphereflip = Id;
if(sphereflipped()) sphereflip[LDIM][LDIM] = -1;
sphere_flipped = flip_sphere();
if(sphere_flipped) sphereflip[LDIM][LDIM] = -1;
actual_view_transform = sphereflip;
if(vid.yshift && WDIM == 2) actual_view_transform = ypush(vid.yshift) * actual_view_transform;
#if MAXMDIM >= 4

8
hypgraph.cpp
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@@ -11,9 +11,11 @@ namespace hr {
hyperpoint ghxy, ghgxy;
shiftpoint ghpm = shiftless(C02);
#if HDR
inline bool sphereflipped() { return sphere && pconf.alpha > 1.1; }
#endif
EX ld flip_limit = 1.1;
EX bool flip_sphere() { return sphere && pconf.alpha > flip_limit; }
EX bool sphere_flipped;
void ghcheck(hyperpoint &ret, const shiftpoint &H) {
if(hypot_d(2, ret-ghxy) < hypot_d(2, ghgxy-ghxy)) {

2
vr.cpp
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@@ -577,7 +577,7 @@ EX hyperpoint model_location(shiftpoint h, bool& bad) {
h.h = hmd_pre_for[2] * h.h;
eModel md = pmodel_3d_version();
apply_other_model(h, hscr, md);
bad = in_vr_sphere && get_side(hscr) == (sphereflipped() ? -1 : 1);
bad = in_vr_sphere && get_side(hscr) == (sphere_flipped ? -1 : 1);
hscr[3] = 1;
return hscr;