Merge branch 'master' of https://git.shs.tools/SHS/pip

src_main/containers/pivector2d.h

@@ -213,9 +213,24 @@ public:
 	}
 
 	inline PIVector2D<T> & resize(size_t rows, size_t cols, const T & f = T()) {
+		mat.resize(rows*cols_, f);
 		rows_ = rows;
-		cols_ = cols;
+		int cs = (cols - cols_);
+		if (cs < 0) {
+			for (size_t r=0; r<rows; ++r) {
+				mat.remove(r*cols_ + cols_, -cs);
+			}
+		}
 		mat.resize(rows*cols, f);
+		if (!mat.isEmpty()) {
+			if (cs > 0) {
+				for (size_t r=0; r<rows_; ++r) {
+					for (int i=0; i<cs; ++i)
+						mat.insert(r*cols + cols_, mat.take_back());
+				}
+			}
+		}
+		cols_ = cols;
 		return *this;
 	}