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ODS in hyperbolic

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Zeno Rogue
2019-10-21 22:42:27 +02:00
parent 30eda241a8
commit c527d4e613
4 changed files with 148 additions and 49 deletions
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48
rug.cpp
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@@ -1168,61 +1168,17 @@ extern int besti;
#if CAP_ODS
/* these functions are for the ODS projection, used in VR videos */
void cyclefix(ld& a, ld b) {
if(a > b + M_PI) a -= 2 * M_PI;
if(a < b - M_PI) a += 2 * M_PI;
}
ld raddif(ld a, ld b) {
ld d = a-b;
if(d < 0) d = -d;
if(d > 2*M_PI) d -= 2*M_PI;
if(d > M_PI) d = 2 * M_PI-d;
return d;
}
bool project_ods(hyperpoint azeq, hyperpoint& h1, hyperpoint& h2, bool eye) {
USING_NATIVE_GEOMETRY;
ld tanalpha = tan_auto(vid.ipd/2);
if(eye) tanalpha = -tanalpha;
if(!sphere) tanalpha = -tanalpha;
ld d = hypot_d(3, azeq);
ld sindbd = sin_auto(d)/d, cosd = cos_auto(d);
ld x = azeq[0] * sindbd;
ld y = azeq[2] * sindbd;
ld z = azeq[1] * sindbd;
ld t = cosd;
return ods::project(hyperpoint(azeq[0] * sindbd, azeq[1] * sindbd, azeq[2] * sindbd, cosd), h1, h2, eye);
// printf("%10.5lf %10.5lf %10.5lf ", azeq[0], azeq[1], azeq[2]);
// printf(" => %10.5lf %10.5lf %10.5lf %10.5lf", x, y, z, t);
ld y02 = (x*x + y*y - tanalpha*tanalpha*t*t);
if(y02 < 0) return false;
ld y0 = sqrt(y02);
ld theta = atan(z / y0);
for(int i=0; i<2; i++) {
hyperpoint& h = (i ? h1 : h2);
if(i == 1) theta = -theta, y0 = -y0;
ld x0 = t * tanalpha;
ld phi = atan2(y, x) - atan2(y0, x0) + M_PI;
ld delta = euclid ? hypot(y0,z) : atan2_auto(z / sin(theta), t / cos_auto(vid.ipd/2));
if(euclid || hyperbolic) phi -= M_PI;
if(hyperbolic) delta = -delta;
h[0] = phi;
h[1] = theta;
h[2] = delta;
if(euclid || hyperbolic) h[1] = -theta;
// printf(" => %10.5lf %10.5lf %10.5lf", phi, theta, delta);
}
// printf("\n");
return true;
@@ -1242,7 +1198,7 @@ void drawTriangle(triangle& t) {
dt++;
#if CAP_ODS
if(vid.stereo_mode == current_display->sODS) {
if(vid.stereo_mode == sODS) {
hyperpoint pts[3];
// not implemented