mrmBot-Matrix/natives/spin.cc

72 lines
No EOL
2 KiB
C++

#include <napi.h>
#include <list>
#include <Magick++.h>
using namespace std;
using namespace Magick;
class SpinWorker : public Napi::AsyncWorker {
public:
SpinWorker(Napi::Function& callback, string in_path, string type, int delay)
: Napi::AsyncWorker(callback), in_path(in_path), type(type), delay(delay) {}
~SpinWorker() {}
void Execute() {
list <Image> frames;
list <Image> coalesced;
list <Image> mid;
list <Image> result;
readImages(&frames, in_path);
coalesceImages(&coalesced, frames.begin(), frames.end());
if (type != "GIF") {
list <Image>::iterator it = coalesced.begin();
for (int i = 0; i < 29; ++i) {
coalesced.push_back(*it);
}
}
int i = 0;
for (Image &image : coalesced) {
image.scale(Geometry("256x256"));
image.alphaChannel(Magick::SetAlphaChannel);
double rotation[1] = {360 * i / coalesced.size()};
image.distort(Magick::ScaleRotateTranslateDistortion, 1, rotation);
image.magick("GIF");
mid.push_back(image);
i++;
}
optimizeImageLayers(&result, mid.begin(), mid.end());
if (delay != 0) {
for_each(result.begin(), result.end(), animationDelayImage(delay));
} else if (type != "GIF") {
for_each(result.begin(), result.end(), animationDelayImage(5));
}
writeImages(result.begin(), result.end(), &blob);
}
void OnOK() {
Callback().Call({Env().Undefined(), Napi::Buffer<char>::Copy(Env(), (char *)blob.data(), blob.length())});
}
private:
string in_path, type;
int delay;
Blob blob;
};
Napi::Value Spin(const Napi::CallbackInfo &info)
{
Napi::Env env = info.Env();
Napi::Object obj = info[0].As<Napi::Object>();
Napi::Function cb = info[1].As<Napi::Function>();
string path = obj.Get("path").As<Napi::String>().Utf8Value();
string type = obj.Get("type").As<Napi::String>().Utf8Value();
int delay = obj.Get("delay").As<Napi::Number>().Int32Value();
SpinWorker* blurWorker = new SpinWorker(cb, path, type, delay);
blurWorker->Queue();
return env.Undefined();
}