Added liquidRescale to MagickImage.

src/magick-image.ts

@@ -118,6 +118,8 @@ export interface IMagickImage extends INativeInstance {
     level(blackPoint: Percentage, whitePoint: Percentage, gamma: number): void;
     level(channels: Channels, blackPoint: Percentage, whitePoint: Percentage): void;
     level(channels: Channels, blackPoint: Percentage, whitePoint: Percentage, gamma: number): void;
+    liquidRescale(geometry: MagickGeometry): void;
+    liquidRescale(width: number, height: number): void;
     modulate(brightness: Percentage): void;
     modulate(brightness: Percentage, saturation: Percentage): void;
     modulate(brightness: Percentage, saturation: Percentage, hue: Percentage): void;
@@ -637,6 +639,18 @@ export class MagickImage extends NativeInstance implements IMagickImage {
         });
     }
 
+    liquidRescale(geometry: MagickGeometry): void;
+    liquidRescale(width: number, height: number): void;
+    liquidRescale(widthOrGeometry: number | MagickGeometry, height?: number): void {
+        const geometry = typeof widthOrGeometry === 'number' ? new MagickGeometry(widthOrGeometry, height as number) : widthOrGeometry;
+        Exception.use(exception => {
+            _withString(geometry.toString(), geometryPtr => {
+                const instance = ImageMagick._api._MagickImage_LiquidRescale(this._instance, geometryPtr, geometry.x, geometry.y, exception.ptr);
+                this._setInstance(instance, exception);
+            });
+        });
+    }
+
     modulate(brightness: Percentage): void;
     modulate(brightness: Percentage, saturation: Percentage): void;
     modulate(brightness: Percentage, saturation: Percentage, hue: Percentage): void;

tests/magick-image/liquid-rescale.spec.ts

@@ -0,0 +1,47 @@
+// Copyright Dirk Lemstra https://github.com/dlemstra/magick-wasm.
+// Licensed under the Apache License, Version 2.0.
+
+import { ImageMagick } from '../../src/image-magick';
+import { IMagickImage, MagickImage } from '../../src/magick-image';
+import { MagickGeometry } from '../../src/magick-geometry';
+import '../custom-matcher';
+
+let image: IMagickImage;
+
+beforeEach(() => {
+    ImageMagick._api = (global as any).native;
+    image = MagickImage.create();
+    image.read('logo:');
+});
+
+afterEach(() => {
+    image.dispose();
+});
+
+describe('MagickImage#liquidRescale', () => {
+    it('should change the width of the image', () => {
+        image.liquidRescale(400, 0);
+        expect(image.width).toBe(400);
+        expect(image.height).toBe(300);
+    });
+
+    it('should change the height of the image', () => {
+        image.liquidRescale(0, 400);
+        expect(image.width).toBe(533);
+        expect(image.height).toBe(400);
+    });
+
+    it('with geometry should change the width of the image', () => {
+        image.liquidRescale(new MagickGeometry(300, 0));
+        expect(image.width).toBe(300);
+        expect(image.height).toBe(225);
+    });
+
+    it('with geometry should change the height of the image', () => {
+        image.liquidRescale(new MagickGeometry(0, 300));
+        expect(image.width).toBe(400);
+        expect(image.height).toBe(300);
+        expect(image).toHavePixelWithColor(250, 280, '#ed1f24ff');
+        expect(image).toHavePixelWithColor(174, 224, '#223e92ff');
+    });
+});