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Reduce reallocations and memory usage in gyroid

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This commit is contained in:
Yuri D'Elia 2019-06-22 15:59:54 +02:00
parent b9901f1730
commit 5932881291
1 changed files with 3 additions and 0 deletions
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3
src/libslic3r/Fill/FillGyroid.cpp
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@ -35,6 +35,7 @@ static inline Polyline make_wave(
{ {
std::vector<Vec2d> points = one_period; std::vector<Vec2d> points = one_period;
double period = points.back()(0); double period = points.back()(0);
points.reserve(one_period.size() * floor(width / period));
points.pop_back(); points.pop_back();
int n = points.size(); int n = points.size();
do { do {
@ -44,6 +45,7 @@ static inline Polyline make_wave(
// and construct the final polyline to return: // and construct the final polyline to return:
Polyline polyline; Polyline polyline;
polyline.points.reserve(points.size());
for (auto& point : points) { for (auto& point : points) {
point(1) += offset; point(1) += offset;
point(1) = clamp(0., height, double(point(1))); point(1) = clamp(0., height, double(point(1)));
@ -60,6 +62,7 @@ static std::vector<Vec2d> make_one_period(double width, double scaleFactor, doub
std::vector<Vec2d> points; std::vector<Vec2d> points;
double dx = M_PI_2; // exact coordinates on main inflexion lobes double dx = M_PI_2; // exact coordinates on main inflexion lobes
double limit = std::min(2*M_PI, width); double limit = std::min(2*M_PI, width);
points.reserve(ceil(limit / tolerance / 3));
for (double x = 0.; x < limit + EPSILON; x += dx) { // so the last point is there too for (double x = 0.; x < limit + EPSILON; x += dx) { // so the last point is there too
x = std::min(x, limit); x = std::min(x, limit);
points.emplace_back(Vec2d(x, f(x, z_sin, z_cos, vertical, flip))); points.emplace_back(Vec2d(x, f(x, z_sin, z_cos, vertical, flip)));