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Code Issues Releases Wiki Activity

atz now better -- uses rotator

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Zeno Rogue 2024-06-22 01:47:05 +02:00
parent 3051f59746
commit f652992602
2 changed files with 22 additions and 15 deletions
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1
geometry.cpp
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@ -523,6 +523,7 @@ hpcshape
vector<array<array<array<transmatrix, 6>, GOLDBERG_LIMIT>, GOLDBERG_LIMIT>> Tf;
transmatrix corners;
transmatrix corners_for_triangle;
transmatrix rotator;
ld alpha;
int area;
int pshid[3][8][GOLDBERG_LIMIT][GOLDBERG_LIMIT][8];

36
goldberg.cpp
View File

@ -576,29 +576,26 @@ EX namespace gp {
EX bool gp_style = true; /** disable for the old implementation which did not support fake */
hyperpoint atz(const transmatrix& T, const transmatrix& corners, loc at, int cornerid = 6, ld cf = 3) {
/** for h in corner cordinates, rotate until it is in the correct triangle, and return the number of rotations needed */
int rotate_to_correct(hyperpoint& h) {
int sp = 0;
again:
auto corner = corners * (loctoh_ort(at) + (corner_coords[cornerid] / cf));
if(corner[1] < -1e-6 || corner[2] < -1e-6) {
at = at * eudir(1);
if(cornerid < SG6) cornerid = (1 + cornerid) % SG6;
while(h[1] < -1e-6 || h[2] < -1e-6) {
h = cgi.gpdata->rotator * h;
sp++;
goto again;
}
if(sp>SG3) sp -= SG6;
return sp;
}
hyperpoint atz(const transmatrix& T, const transmatrix& corners, loc at, int cornerid = 6, ld cf = 3) {
auto corner = corners * (loctoh_ort(at) + (corner_coords[cornerid] / cf));
int sp = rotate_to_correct(corner);
if(gp_style && corner[0] < -1e-6) {
auto ac = corner; ac[1] = 1 - corner[1]; ac[2] = 1 - corner[2]; ac[0] = -ac[0];
hyperpoint ctr = normalize(cornmul(T, hyperpoint(0, 0.5, 0.5, 0)));
int sp2 = 0;
while(ac[1] < -1e-6 || ac[2] < -1e-6) {
auto xac = inverse(corners) * ac;
xac = xac[0] * loctoh_ort(eudir(1)) + xac[1] * loctoh_ort(eudir(2)); xac[2] = 1; xac[3] = 0;
ac = corners * xac;
sp2++;
}
if(sp2>SG3) sp2 -= SG6;
int sp2 = rotate_to_correct(ac);
return spin(TAU*sp/S7) *
rgpushxto0(ctr) * rgpushxto0(ctr) * spin(M_PI + TAU*sp2/S7) *
normalize(cornmul(T, ac));
@ -636,6 +633,15 @@ EX namespace gp {
S3 == 4 ? (loctoh_ort(param * loc(1,-1)) + C02)/2 : (loctoh_ort(loc(0,0)) + loctoh_ort(param) + loctoh_ort(param * loc(0,1) * loc(0,1) * loc(0,1) * loc(0,1) * loc(0,1))) / 3,
C03
));
for(int i=0; i<MDIM; i++) {
auto ac = Hypc; ac[i] = 1;
auto xac = inverse(cgi.gpdata->corners) * ac;
xac = xac[0] * loctoh_ort(eudir(1)) + xac[1] * loctoh_ort(eudir(2)); xac[2] = 1; xac[3] = 0;
ac = cgi.gpdata->corners * xac;
set_column(cgi.gpdata->rotator, i, ac);
}
cgi.gpdata->Tf.resize(S7);
/* should work directly without flipping but it does not... flipping for now */