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rogueviz/smoothcam:: interpolate factored out

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Zeno Rogue 2023-02-10 15:02:25 +01:00
parent 6115e5a96d
commit 597d95ccc2
1 changed files with 21 additions and 14 deletions
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35
rogueviz/smoothcam.cpp
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@ -445,6 +445,26 @@ void after_interpolation(hyperpoint& h) {
h = normalize(h); h = normalize(h);
} }
ld interpolate(const vector<ld>& times, vector<ld> values, ld t) {
int n = isize(values);
print(hlog, "interpolate: ", values);
for(int ss=1; ss<=n-1; ss++) {
for(int a=0; a<n-ss; a++) {
// combining [a..a+(ss-1)] and [a+1..a+ss]
if(times[a+ss] == times[a])
values[a] = values[a] + (values[a+ss] - values[a]) * (t-times[a]);
else
values[a] = (values[a] * (times[a+ss] - t) + values[a+1] * (t - times[a])) / (times[a+ss] - times[a]);
}
values.pop_back();
}
println(hlog, " -> ", values[0]);
return values[0];
}
void handle_animation(ld t) { void handle_animation(ld t) {
ld total_total = 0; ld total_total = 0;
@ -504,20 +524,7 @@ void handle_animation(ld t) {
values.push_back(h[i]); values.push_back(h[i]);
} }
int n = isize(values); pts[j][i] = interpolate(values, times, t);
for(int ss=1; ss<=n-1; ss++) {
for(int a=0; a<n-ss; a++) {
// combining [a..a+(ss-1)] and [a+1..a+ss]
if(times[a+ss] == times[a])
values[a] = values[a] + (values[a+ss] - values[a]) * (t-times[a]);
else
values[a] = (values[a] * (times[a+ss] - t) + values[a+1] * (t - times[a])) / (times[a+ss] - times[a]);
}
values.pop_back();
}
pts[j][i] = values[0];
} }
after_interpolation(pts[j]); after_interpolation(pts[j]);
} }