mrmBot-Matrix/natives/wall.cc

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#include <napi.h>
#include <list>
#include <Magick++.h>
using namespace std;
using namespace Magick;
class WallWorker : public Napi::AsyncWorker {
public:
WallWorker(Napi::Function& callback, string in_path, string type, int delay)
: Napi::AsyncWorker(callback), in_path(in_path), type(type), delay(delay) {}
~WallWorker() {}
void Execute() {
list <Image> frames;
list <Image> coalesced;
list <Image> mid;
readImages(&frames, in_path);
coalesceImages(&coalesced, frames.begin(), frames.end());
for (Image &image : coalesced) {
image.resize(Geometry("128x128"));
image.virtualPixelMethod(Magick::TileVirtualPixelMethod);
image.matteColor("none");
image.backgroundColor("none");
image.scale(Geometry("512x512"));
double arguments[16] = {0, 0, 57, 42, 0, 128, 63, 130, 128, 0, 140, 60, 128, 128, 140, 140};
image.distort(Magick::PerspectiveDistortion, 16, arguments);
image.scale(Geometry("800x800>"));
image.magick(type);
mid.push_back(image);
}
optimizeTransparency(mid.begin(), mid.end());
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if (type == "gif") {
for (Image &image : mid) {
image.quantizeDitherMethod(FloydSteinbergDitherMethod);
image.quantize();
if (delay != 0) image.animationDelay(delay);
}
}
writeImages(mid.begin(), mid.end(), &blob);
}
void OnOK() {
Callback().Call({Env().Undefined(), Napi::Buffer<char>::Copy(Env(), (char *)blob.data(), blob.length())});
}
private:
string in_path, type;
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int delay;
Blob blob;
};
Napi::Value Wall(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.Has("delay") ? obj.Get("delay").As<Napi::Number>().Int32Value() : 0;
WallWorker* flopWorker = new WallWorker(cb, path, type, delay);
flopWorker->Queue();
return env.Undefined();
}