X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fglobals.cpp;fp=src%2Fglobals.cpp;h=7be74e16e1112e3c15f2c9ebdae981b9db4728e2;hb=075de16b7430454597f1cde039405b18232f0058;hp=804960c7ad98ba96e9c86d49357de94f3da2c8d7;hpb=ae70f6ff733c4642fe3a9f8b3635a0a0b40cf82a;p=guemap

diff --git a/src/globals.cpp b/src/globals.cpp
index 804960c..7be74e1 100644
--- a/src/globals.cpp
+++ b/src/globals.cpp
@@ -9,7 +9,7 @@
 
 #include "globals.h"
 #include <math.h>
-
+#include "mathconstants.h"
 
 //
 // Class MapEdge:
@@ -29,11 +29,16 @@ MapEdge::MapEdge(): room1(0), room2(0), end1(rcNone), end2(rcNone), type1(0), ty
 {
 }
 
-
 MapEdge::MapEdge(RoomNum r1, RoomNum r2, EdgeType t1, EdgeType t2, RoomCorner e1, RoomCorner e2): room1(r1), room2(r2), end1(e1), end2(e2), type1(t1), type2(t2)
 {
 }
 
+void MapEdge::Clear(void)
+{
+	room1 = room2 = 0;
+	end1 = end2 = rcNone;
+	type1 = type2 = 0;
+}
 
 //
 // Actually swap the rooms for this edge
@@ -53,7 +58,6 @@ void MapEdge::Swap(void)
 	end2 = tc;
 }
 
-
 bool MapEdge::HasRoom(RoomNum r)
 {
 	if ((room1 != r) && (room2 != r))
@@ -62,7 +66,6 @@ bool MapEdge::HasRoom(RoomNum r)
 	return true;
 }
 
-
 //
 // Return the MapEdge but with the RoomNums, EdgeTypes, & RoomCorners swapped
 //
@@ -72,7 +75,6 @@ MapEdge MapEdge::Swapped(void) const
 	return MapEdge(room2, room1, type2 | (type1 & etObstructed), type1 & ~etObstructed, end2, end1);
 }
 
-
 //
 // Class MapRoom:
 //
@@ -91,13 +93,11 @@ MapRoom::MapRoom(): flags(0)
 {
 }
 
-
 MapRoom::MapRoom(const MapRoom & o)
 {
 	*this = o;
 }
 
-
 MapRoom & MapRoom::operator=(const MapRoom & source)
 {
 	pos = source.pos;
@@ -107,21 +107,18 @@ MapRoom & MapRoom::operator=(const MapRoom & source)
 	return *this;
 }
 
-
 QRect MapRoom::getRect(void)
 {
 	return QRect(pos,
 		(flags & rfCorner ? QSize(gridX, gridY) : QSize(roomWidth, roomHeight)));
 }
 
-
 QRect MapRoom::getTranslatedRect(QPoint t)
 {
 	return QRect(pos + t,
 		(flags & rfCorner ? QSize(gridX, gridY) : QSize(roomWidth, roomHeight)));
 }
 
-
 QPoint MapRoom::GetCenter(void)
 {
 	return QPoint(pos +
@@ -130,13 +127,11 @@ QPoint MapRoom::GetCenter(void)
 			: QPoint(roomWidth / 2, roomHeight / 2)));
 }
 
-
 RoomFlags MapRoom::isCorner() const
 {
 	return (flags & rfCorner);
 }
 
-
 bool MapRoom::operator!=(const MapRoom & mr) const
 {
 	if (pos != mr.pos)
@@ -151,7 +146,6 @@ bool MapRoom::operator!=(const MapRoom & mr) const
 	return true;
 }
 
-
 //
 // Miscellaneous functions:
 //--------------------------------------------------------------------
@@ -166,7 +160,6 @@ void trimLeft(string & s)
 		s.erase(0, p);
 }
 
-
 //
 // Trim whitespace from right of string:
 //
@@ -178,7 +171,6 @@ void trimRight(string & s)
 		s.erase(p + 1);
 }
 
-
 //
 // Consolidates action creation from a multi-step process to a single-step one.
 //
@@ -194,7 +186,6 @@ QAction * CreateAction(QString name, QString tooltip,
 	return action;
 }
 
-
 //
 // This is essentially the same as the previous function, but this allows more
 // than one key sequence to be added as key shortcuts.
@@ -215,7 +206,6 @@ QAction * CreateAction(QString name, QString tooltip,
 	return action;
 }
 
-
 //
 // Miscellaneous geometrical helper functions
 //
@@ -224,7 +214,6 @@ double Magnitude(QPointF p)
 	return sqrt((p.x() * p.x()) + (p.y() * p.y()));
 }
 
-
 QPointF UnitVector(QPointF p)
 {
 	double magnitude = Magnitude(p);
@@ -235,31 +224,36 @@ QPointF UnitVector(QPointF p)
 	return QPointF(p.x() / magnitude, p.y() / magnitude);
 }
 
-
 double Angle(QPointF p)
 {
-	return atan2(p.y(), p.x());
-}
+	double angle = atan2(p.y(), p.x());
 
+	if (angle < 0)
+		angle += TAU;
+
+	return angle;
+}
 
 double Angle(QPoint p)
 {
-	return atan2((double)p.y(), (double)p.x());
-}
+	double angle = atan2((double)p.y(), (double)p.x());
+
+	if (angle < 0)
+		angle += TAU;
 
+	return angle;
+}
 
 double Dot(QPointF a, QPointF b)
 {
 	return (a.x() * b.x()) + (a.y() * b.y());
 }
 
-
 double Determinant(QPointF a, QPointF b)
 {
 	return (a.x() * b.y()) - (b.x() * a.y());
 }
 
-
 // Returns the parameter of a point in space to this vector. If the parameter
 // is between 0 and 1, the normal of the vector to the point is on the vector.
 double ParameterOfLineAndPoint(QPointF tail, QPointF head, QPointF point)
@@ -274,6 +268,6 @@ double ParameterOfLineAndPoint(QPointF tail, QPointF head, QPointF point)
 	double magnitude = Magnitude(lineSegment);
 	QPointF pointSegment = point - tail;
 	double t = Dot(lineSegment, pointSegment) / (magnitude * magnitude);
+
 	return t;
 }
-