fixing empty Mat case

modules/java/generator/src/java/core+MatOfByte.java

@@ -14,7 +14,7 @@ public class MatOfByte extends Mat {
 
     protected MatOfByte(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -25,7 +25,7 @@ public class MatOfByte extends Mat {
 
     public MatOfByte(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfDouble.java

@@ -14,7 +14,7 @@ public class MatOfDouble extends Mat {
 
     protected MatOfDouble(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -25,7 +25,7 @@ public class MatOfDouble extends Mat {
 
     public MatOfDouble(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfFloat.java

@@ -14,7 +14,7 @@ public class MatOfFloat extends Mat {
 
     protected MatOfFloat(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -25,7 +25,7 @@ public class MatOfFloat extends Mat {
 
     public MatOfFloat(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfFloat4.java

@@ -14,7 +14,7 @@ public class MatOfFloat4 extends Mat {
 
     protected MatOfFloat4(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -25,7 +25,7 @@ public class MatOfFloat4 extends Mat {
 
     public MatOfFloat4(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfFloat6.java

@@ -14,7 +14,7 @@ public class MatOfFloat6 extends Mat {
 
     protected MatOfFloat6(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -25,7 +25,7 @@ public class MatOfFloat6 extends Mat {
 
     public MatOfFloat6(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfInt.java

@@ -15,7 +15,7 @@ public class MatOfInt extends Mat {
 
     protected MatOfInt(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -26,7 +26,7 @@ public class MatOfInt extends Mat {
 
     public MatOfInt(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfInt4.java

@@ -15,7 +15,7 @@ public class MatOfInt4 extends Mat {
 
     protected MatOfInt4(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -26,7 +26,7 @@ public class MatOfInt4 extends Mat {
 
     public MatOfInt4(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfKeyPoint.java

@@ -16,7 +16,7 @@ public class MatOfKeyPoint extends Mat {
 
     protected MatOfKeyPoint(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -27,7 +27,7 @@ public class MatOfKeyPoint extends Mat {
 
     public MatOfKeyPoint(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfPoint.java

@@ -14,7 +14,7 @@ public class MatOfPoint extends Mat {
 
     protected MatOfPoint(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -25,7 +25,7 @@ public class MatOfPoint extends Mat {
 
     public MatOfPoint(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfPoint2f.java

@@ -14,7 +14,7 @@ public class MatOfPoint2f extends Mat {
 
     protected MatOfPoint2f(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -25,7 +25,7 @@ public class MatOfPoint2f extends Mat {
 
     public MatOfPoint2f(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfPoint3.java

@@ -14,7 +14,7 @@ public class MatOfPoint3 extends Mat {
 
     protected MatOfPoint3(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -25,7 +25,7 @@ public class MatOfPoint3 extends Mat {
 
     public MatOfPoint3(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfPoint3f.java

@@ -14,7 +14,7 @@ public class MatOfPoint3f extends Mat {
 
     protected MatOfPoint3f(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -25,7 +25,7 @@ public class MatOfPoint3f extends Mat {
 
     public MatOfPoint3f(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }

modules/java/generator/src/java/core+MatOfRect.java

@@ -15,7 +15,7 @@ public class MatOfRect extends Mat {
 
     protected MatOfRect(long addr) {
         super(addr);
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }
@@ -26,7 +26,7 @@ public class MatOfRect extends Mat {
 
     public MatOfRect(Mat m) {
         super(m, Range.all());
-        if(checkVector(_channels, _depth) < 0 )
+        if( !empty() && checkVector(_channels, _depth) < 0 )
             throw new IllegalArgumentException("Incomatible Mat");
         //FIXME: do we need release() here?
     }