Catcrafts/Crafter.Graphics
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This commit is contained in:
Jorijn van der Graaf 2025-11-26 02:56:38 +01:00
commit 627ef13727
4 changed files with 45 additions and 31 deletions
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19
interfaces/Crafter.Graphics-Animation.cppm
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@ -62,27 +62,28 @@ namespace Crafter {
std::vector<Keyframe<T>> keyframes;
std::uint_fast32_t currentFrame;
std::chrono::time_point<std::chrono::high_resolution_clock> startedAt;
std::chrono::duration<double> accumulated;
Animation(std::vector<Keyframe<T>>&& keyframes) : keyframes(std::move(keyframes)) {}
void Start(std::chrono::time_point<std::chrono::high_resolution_clock> time) {
currentFrame = 0;
accumulated = std::chrono::duration<double>(0);
startedAt = time;
}
T Play(std::chrono::time_point<std::chrono::high_resolution_clock> time) {
std::chrono::duration<double> elapsed = time - startedAt;
std::chrono::duration<double> accumulated(0);
for (std::uint_fast32_t i = currentFrame; i < keyframes.size(); ++i) {
accumulated += keyframes[i].duration;
if (elapsed < accumulated) {
std::chrono::duration<double> frameStartTime = accumulated - keyframes[i].duration;
auto t = (elapsed - frameStartTime) / keyframes[i].duration.count();
for (; currentFrame < keyframes.size(); ++currentFrame) {
if (elapsed < accumulated + keyframes[currentFrame].duration) {
std::chrono::duration<double> frameStartTime = accumulated;
auto t = (elapsed - frameStartTime) / keyframes[currentFrame].duration.count();
currentFrame = i;
return LerpTuple(
keyframes[i].startValues,
keyframes[i].endValues,
keyframes[currentFrame].startValues,
keyframes[currentFrame].endValues,
t.count()
);
} else {
accumulated += keyframes[currentFrame].duration;
}
}