Add squish

commands/image-editing/squish.js

@@ -0,0 +1,11 @@
+import ImageCommand from "../../classes/imageCommand.js";
+
+class SquishCommand extends ImageCommand {
+  static description = "Squishes/stretches an image";
+  static aliases = ["squishy", "squash"];
+
+  static noImage = "You need to provide an image/GIF to squish!";
+  static command = "squish";
+}
+
+export default SquishCommand;

natives/image.cc

@@ -25,9 +25,10 @@
 #include "reverse.h"
 #include "scott.h"
 #include "snapchat.h"
-#include "speed.h"
 #include "sonic.h"
+#include "speed.h"
 #include "spin.h"
+#include "squish.h"
 #include "tile.h"
 #include "togif.h"
 #include "uncanny.h"
@@ -74,9 +75,10 @@ Napi::Object Init(Napi::Env env, Napi::Object exports)
   exports.Set(Napi::String::New(env, "reverse"), Napi::Function::New(env, Reverse));
   exports.Set(Napi::String::New(env, "scott"), Napi::Function::New(env, Scott));
   exports.Set(Napi::String::New(env, "snapchat"), Napi::Function::New(env, Snapchat));
-  exports.Set(Napi::String::New(env, "speed"), Napi::Function::New(env, Speed));
   exports.Set(Napi::String::New(env, "sonic"), Napi::Function::New(env, Sonic));
+  exports.Set(Napi::String::New(env, "speed"), Napi::Function::New(env, Speed));
   exports.Set(Napi::String::New(env, "spin"), Napi::Function::New(env, Spin));
+  exports.Set(Napi::String::New(env, "squish"), Napi::Function::New(env, Squish));
   exports.Set(Napi::String::New(env, "swirl"), Napi::Function::New(env, Swirl));
   exports.Set(Napi::String::New(env, "tile"), Napi::Function::New(env, Tile));
   exports.Set(Napi::String::New(env, "togif"), Napi::Function::New(env, ToGif));

natives/squish.cc

@@ -0,0 +1,67 @@
+#include <math.h>
+#include <napi.h>
+
+#include <vips/vips8>
+
+using namespace std;
+using namespace vips;
+
+Napi::Value Squish(const Napi::CallbackInfo &info) {
+  Napi::Env env = info.Env();
+  Napi::Object result = Napi::Object::New(env);
+
+  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();
+
+    VOption *options = VImage::option();
+
+    VImage in =
+        VImage::new_from_buffer(
+            data.Data(), data.Length(), "",
+            type == "gif" ? options->set("n", -1)->set("access", "sequential")
+                          : options)
+            .colourspace(VIPS_INTERPRETATION_sRGB);
+    if (!in.has_alpha())
+      in = in.bandjoin(255);
+
+    int width = in.width();
+    int pageHeight = vips_image_get_page_height(in.get_image());
+    int nPages = type == "gif" ? vips_image_get_n_pages(in.get_image()) : 30;
+    double mult = (2 * M_PI) / nPages;
+
+    vector<VImage> img;
+    for (int i = 0; i < nPages; i++) {
+      VImage img_frame =
+          type == "gif" ? in.crop(0, i * pageHeight, width, pageHeight) : in;
+      double newWidth = (sin(i * mult) / 4) + 0.75;
+      double newHeight = (cos(i * mult) / 4) + 0.75;
+      VImage resized =
+          img_frame.resize(newWidth, VImage::option()->set("vscale", newHeight))
+              .gravity(VIPS_COMPASS_DIRECTION_CENTRE, width, pageHeight);
+      img.push_back(resized);
+    }
+    VImage final = VImage::arrayjoin(img, VImage::option()->set("across", 1));
+    final.set(VIPS_META_PAGE_HEIGHT, pageHeight);
+    if (type != "gif") {
+      vector<int> delay(30, 50);
+      final.set("delay", delay);
+    }
+
+    void *buf;
+    size_t length;
+    final.write_to_buffer(".gif", &buf, &length);
+
+    result.Set("data", Napi::Buffer<char>::Copy(env, (char *)buf, length));
+    result.Set("type", "gif");
+  } catch (std::exception const &err) {
+    Napi::Error::New(env, err.what()).ThrowAsJavaScriptException();
+  } catch (...) {
+    Napi::Error::New(env, "Unknown error").ThrowAsJavaScriptException();
+  }
+
+  vips_error_clear();
+  vips_thread_shutdown();
+  return result;
+}

natives/squish.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <napi.h>
+
+Napi::Value Squish(const Napi::CallbackInfo& info);