first commit

objects/shapes/vp_rect.cpp

@@ -0,0 +1,41 @@
+
+
+#include "vp_rect.h"
+
+namespace vp_objects {
+        
+    vp_rect::vp_rect(int x, int y, int width, int height): 
+        x(x), 
+        y(y), 
+        width(width), 
+        height(height) {
+
+    }
+    
+    vp_rect::vp_rect(vp_point left_top, vp_size wh):
+        x(left_top.x), y(left_top.y), width(wh.width), height(wh.height) {
+
+    }
+
+
+    vp_rect::~vp_rect() {
+
+    }
+    
+    vp_point vp_rect::center() {
+        return vp_point(x + width / 2, y + height / 2);
+    }
+
+    float vp_rect::iou_with(const vp_rect & rect) {
+        return 1.0;
+    }
+
+    bool vp_rect::contains(const vp_point & p) {
+        return true;
+    }
+
+    vp_point vp_rect::track_point() {
+        // by default the center point of bottom is tracking point.
+        return {x + width / 2, y + height};
+    }
+}