[Feature] - Create Utils for Rectangle Shape

CMakeLists.txt

@@ -51,6 +51,7 @@ add_library(${PROJECT_NAME} SHARED
   "src/${PROJECT_NAME}/utils/color.cpp"
   "src/${PROJECT_NAME}/utils/contours.cpp"
   "src/${PROJECT_NAME}/utils/circle.cpp"
+  "src/${PROJECT_NAME}/utils/rect.cpp"
   "src/${PROJECT_NAME}/node/ninshiki_cpp_node.cpp")
 
 add_library(${PROJECT_NAME}_exported SHARED
@@ -59,7 +60,8 @@ add_library(${PROJECT_NAME}_exported SHARED
   "src/${PROJECT_NAME}/detector/lbp_detector.cpp"
   "src/${PROJECT_NAME}/utils/color.cpp"
   "src/${PROJECT_NAME}/utils/contours.cpp"
-  "src/${PROJECT_NAME}/utils/circle.cpp")
+  "src/${PROJECT_NAME}/utils/circle.cpp"
+  "src/${PROJECT_NAME}/utils/rect.cpp")
 
 target_include_directories(${PROJECT_NAME} PUBLIC
   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>

include/ninshiki_cpp/utils/rect.hpp

@@ -0,0 +1,43 @@
+// Copyright (c) 2024 ICHIRO ITS
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#ifndef NINSHIKI_CPP__UTILS__RECT_HPP_
+#define NINSHIKI_CPP__UTILS__RECT_HPP_
+
+#include <opencv2/opencv.hpp>
+
+namespace ninshiki_cpp::utils
+{
+
+class Rect
+{
+private:
+  cv::Rect rect;
+
+public:
+  Rect(const cv::Rect & rect);
+  const cv::Mat & get_binary_mat(const cv::Size & mat_size, int line_size = cv::FILLED) const;
+
+  const cv::Point2f & get_center() const;
+};
+
+}  // namespace ninshiki_cpp::utils
+
+#endif  // NINSHIKI_CPP__UTILS__RECT_HPP_

src/ninshiki_cpp/utils/rect.cpp

@@ -0,0 +1,42 @@
+// Copyright (c) 2024 ICHIRO ITS
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include "ninshiki_cpp/utils/rect.hpp"
+
+namespace ninshiki_cpp::utils
+{
+
+Rect::Rect(const cv::Rect & rect) : rect(rect) {}
+
+const cv::Mat & Rect::get_binary_mat(const cv::Size & mat_size, int line_size) const
+{
+  cv::Mat binary_mat(mat_size, CV_8UC1, cv::Scalar(0));
+
+  cv::rectangle(binary_mat, rect, cv::Scalar(255), line_size);
+
+  return binary_mat;
+}
+
+const cv::Point2f & Rect::get_center() const
+{
+  return cv::Point2f(rect.x + rect.width / 2, rect.y + rect.height / 2);
+}
+
+}  // namespace ninshiki_cpp::utils