mrmBot-Matrix/natives/wall.cc

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#include <Magick++.h>
#include <napi.h>
#include <iostream>
#include <list>
using namespace std;
using namespace Magick;
Napi::Value Wall(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
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try {
Napi::Object obj = info[0].As<Napi::Object>();
Napi::Buffer<char> data = obj.Get("data").As<Napi::Buffer<char>>();
string type = obj.Get("type").As<Napi::String>().Utf8Value();
Blob blob;
list<Image> frames;
list<Image> coalesced;
list<Image> mid;
try {
readImages(&frames, Blob(data.Data(), data.Length()));
} catch (Magick::WarningCoder &warning) {
cerr << "Coder Warning: " << warning.what() << endl;
} catch (Magick::Warning &warning) {
cerr << "Warning: " << warning.what() << endl;
}
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());
if (type == "gif") {
for (Image &image : mid) {
image.quantizeDitherMethod(FloydSteinbergDitherMethod);
image.quantize();
}
}
writeImages(mid.begin(), mid.end(), &blob);
Napi::Object result = Napi::Object::New(env);
result.Set("data", Napi::Buffer<char>::Copy(env, (char *)blob.data(),
blob.length()));
result.Set("type", type);
return result;
} catch (std::exception const &err) {
throw Napi::Error::New(env, err.what());
} catch (...) {
throw Napi::Error::New(env, "Unknown error");
}
}