added xmodules.face check to face recognition examples

Author: justadudewhohacks

examples/faceRecognition0.js

@@ -2,6 +2,10 @@ const fs = require('fs');
 const path = require('path');
 const cv = require('../');
 
+if (!cv.xmodules.face) {
+  return console.log('exiting: opencv4nodejs compiled without face module');
+}
+
 const basePath = '../data/face-recognition';
 const imgsPath = path.resolve(basePath, 'imgs');
 const nameMappings = ['daryl', 'rick', 'negan'];

examples/faceRecognition1.js

@@ -2,6 +2,10 @@ const fs = require('fs');
 const path = require('path');
 const cv = require('../');
 
+if (!cv.xmodules.face) {
+  return console.log('exiting: opencv4nodejs compiled without face module');
+}
+
 const basePath = '../data/face-recognition';
 const imgsPath = path.resolve(basePath, 'imgs');
 const nameMappings = ['daryl', 'rick', 'negan'];
@@ -70,4 +74,4 @@ faces.forEach((faceRect) => {
   );
 });
 
-cv.imshowWait('result', twoFacesImg);
+cv.imshowWait('result', twoFacesImg);