X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=src%2Frect.h;h=b092fbe77072359b096b31f0e64f73ead9da19cc;hb=ef0af5fd0129161a9e079bd3cd1298b53f1fe11a;hp=3c4a105b664b23e66a3eeba9163b052af554f290;hpb=36b4b285d3dbdab423511e7188c37bd1d0443edb;p=ipdf%2Fcode.git

diff --git a/src/rect.h b/src/rect.h
index 3c4a105..b092fbe 100644
--- a/src/rect.h
+++ b/src/rect.h
@@ -9,8 +9,8 @@ namespace IPDF
 	struct Rect
 	{
 		Real x; Real y; Real w; Real h;
-		Rect() = default; // Needed so we can fread/fwrite this struct
-		Rect(Real _x, Real _y, Real _w, Real _h) : x(_x), y(_y), w(_w), h(_h) {}
+		//Rect() = default; // Needed so we can fread/fwrite this struct
+		Rect(Real _x=0, Real _y=0, Real _w=1, Real _h=1) : x(_x), y(_y), w(_w), h(_h) {}
 		std::string Str() const
 		{
 			std::stringstream s;
@@ -26,6 +26,15 @@ namespace IPDF
 			if (pt_y >= y + h) return false;
 			return true;
 		}
+
+		inline bool Intersects(const Rect& other) const
+		{
+			if (x + w < other.x) return false;
+			if (y + h < other.y) return false;
+			if (x > other.x + other.w) return false;
+			if (y > other.y + other.h) return false;
+			return true;
+		}
 	};
 
 	inline Rect TransformRectCoordinates(const Rect& view, const Rect& r)
@@ -33,10 +42,10 @@ namespace IPDF
 		Rect out;
 		Real w = (view.w == Real(0))?Real(1):view.w;
 		Real h = (view.h == Real(0))?Real(1):view.h;
-		out.x = (r.x - view.x) / w;
-		out.y = (r.y - view.y) / h;
-		out.w = r.w / w;
-		out.h = r.h / h;
+		out.x = (r.x - view.x) / w; //r.x = out.x *w + view.x
+		out.y = (r.y - view.y) / h; // r.y = out.y*h + view.y
+		out.w = r.w / w; // r.w = out.w * w
+		out.h = r.h / h; // r.h = out.h * h
 		return out;
 	}