113 lines
2.5 KiB
C++
113 lines
2.5 KiB
C++
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#include "ui/paint/blobs.h"
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#include "ui/painter.h"
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namespace Ui::Paint {
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namespace {
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constexpr auto kRateLimitF = 1000. / 60.;
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constexpr auto kRateLimit = int(kRateLimitF + 0.5); // Round.
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} // namespace
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Blobs::Blobs(
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std::vector<BlobData> blobDatas,
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float levelDuration,
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float maxLevel)
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: _maxLevel(maxLevel)
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, _blobDatas(std::move(blobDatas))
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, _levelValue(levelDuration) {
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init();
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}
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void Blobs::init() {
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for (const auto &data : _blobDatas) {
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auto blob = Paint::RadialBlob(
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data.segmentsCount,
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data.minScale,
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data.minSpeed,
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data.maxSpeed);
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blob.setRadiuses({ data.minRadius, data.maxRadius });
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blob.generateBlob();
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_blobs.push_back(std::move(blob));
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}
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}
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float Blobs::maxRadius() const {
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const auto maxOfRadiuses = [](const BlobData data) {
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return std::max(data.maxRadius, data.minRadius);
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};
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const auto max = *ranges::max_element(
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_blobDatas,
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std::less<>(),
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maxOfRadiuses);
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return maxOfRadiuses(max);
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}
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int Blobs::size() const {
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return _blobs.size();
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}
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void Blobs::setRadiusesAt(
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rpl::producer<Blob::Radiuses> &&radiuses,
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int index) {
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Expects(index >= 0 && index < size());
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std::move(
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radiuses
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) | rpl::start_with_next([=](Blob::Radiuses r) {
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_blobs[index].setRadiuses(std::move(r));
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}, _lifetime);
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}
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Blob::Radiuses Blobs::radiusesAt(int index) {
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Expects(index >= 0 && index < size());
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return _blobs[index].radiuses();
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}
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void Blobs::setLevel(float value) {
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const auto to = std::min(_maxLevel, value) / _maxLevel;
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_levelValue.start(to);
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}
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void Blobs::resetLevel() {
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_levelValue.reset();
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}
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void Blobs::paint(QPainter &p, const QBrush &brush, float outerScale) {
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const auto opacity = p.opacity();
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for (auto i = 0; i < _blobs.size(); i++) {
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const auto alpha = _blobDatas[i].alpha;
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if (alpha != 1.) {
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p.setOpacity(opacity * alpha);
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}
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_blobs[i].paint(p, brush, outerScale);
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if (alpha != 1.) {
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p.setOpacity(opacity);
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}
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}
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}
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void Blobs::updateLevel(crl::time dt) {
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const auto limitedDt = (dt > 20) ? kRateLimit : dt;
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_levelValue.update(limitedDt);
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for (auto i = 0; i < _blobs.size(); i++) {
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_blobs[i].update(
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_levelValue.current(),
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_blobDatas[i].speedScale,
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limitedDt / kRateLimitF);
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}
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}
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float64 Blobs::currentLevel() const {
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return _levelValue.current();
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}
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} // namespace Ui::Paint
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