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models:: perspective_to_space now actually uses the alpha parameter (instead of vid.alpha) and is exported

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This commit is contained in:
Zeno Rogue 2020-01-02 16:56:01 +01:00
parent f1dd349cee
commit 57e10dfca8
1 changed files with 5 additions and 7 deletions
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12
hypgraph.cpp
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@ -29,8 +29,6 @@ EX void camrotate(ld& hx, ld& hy) {
hx = ux / uz, hy = uy / uz;
}
hyperpoint perspective_to_space(hyperpoint h, ld alpha = vid.alpha, eGeometryClass geo = ginf[geometry].cclass);
EX bool non_spatial_model() {
if(among(pmodel, mdRotatedHyperboles, mdJoukowsky, mdJoukowskyInverted, mdPolygonal, mdPolynomial))
return true;
@ -39,7 +37,7 @@ EX bool non_spatial_model() {
return pmodel && vid.consider_shader_projection && (get_shader_flags() & SF_DIRECT);
}
EX hyperpoint perspective_to_space(hyperpoint h, ld alpha, eGeometryClass gc) {
EX hyperpoint perspective_to_space(hyperpoint h, ld alpha IS(vid.alpha), eGeometryClass gc IS(ginf[geometry].cclass)) {
ld hx = h[0], hy = h[1];
if(gc == gcEuclid)
@ -54,8 +52,8 @@ EX hyperpoint perspective_to_space(hyperpoint h, ld alpha, eGeometryClass gc) {
ld curv = gc == gcSphere ? 1 : -1;
A = 1+curv*hr;
B = 2*hr*vid.alpha*-curv;
C = 1 - curv*hr*vid.alpha*vid.alpha;
B = 2*hr*alpha*-curv;
C = 1 - curv*hr*alpha*alpha;
B /= A; C /= A;
@ -65,8 +63,8 @@ EX hyperpoint perspective_to_space(hyperpoint h, ld alpha, eGeometryClass gc) {
ld hz = B / 2 + rootsign * sqrt(C + B*B/4);
hyperpoint H;
H[0] = hx * (hz+vid.alpha);
H[1] = hy * (hz+vid.alpha);
H[0] = hx * (hz+alpha);
H[1] = hy * (hz+alpha);
H[LDIM] = hz;
return H;