Added line collision calculation to cBoundingBox.

source/Vector3d.cpp

@@ -8,16 +8,70 @@
 
 
 
-Vector3d::Vector3d(const Vector3f & v )
-	: x( v.x )
-	, y( v.y )
-	, z( v.z )
+const double Vector3d::EPS = 0.000001;          ///< The max difference between two coords for which the coords are assumed equal
+const double Vector3d::NO_INTERSECTION = 1e70;  ///< Return value of LineCoeffToPlane() if the line is parallel to the plane
+
+
+
+
+
+Vector3d::Vector3d(const Vector3f & v) :
+	x(v.x),
+	y(v.y),
+	z(v.z)
 {
 }
 
-Vector3d::Vector3d(const Vector3f * v )
-	: x( v->x )
-	, y( v->y )
-	, z( v->z )
+
+
+
+
+Vector3d::Vector3d(const Vector3f * v) :
+	x(v->x),
+	y(v->y),
+	z(v->z)
 {
-}
+}
+
+
+
+
+
+double Vector3d::LineCoeffToXYPlane(const Vector3d & a_OtherEnd, double a_Z) const
+{
+	if (abs(z - a_OtherEnd.z) < EPS)
+	{
+		return NO_INTERSECTION;
+	}
+	return (a_Z - z) / (a_OtherEnd.z - z);
+}
+
+
+
+
+
+double Vector3d::LineCoeffToXZPlane(const Vector3d & a_OtherEnd, double a_Y) const
+{
+	if (abs(y - a_OtherEnd.y) < EPS)
+	{
+		return NO_INTERSECTION;
+	}
+	return (a_Y - y) / (a_OtherEnd.y - y);
+}
+
+
+
+
+
+double Vector3d::LineCoeffToYZPlane(const Vector3d & a_OtherEnd, double a_X) const
+{
+	if (abs(x - a_OtherEnd.x) < EPS)
+	{
+		return NO_INTERSECTION;
+	}
+	return (a_X - x) / (a_OtherEnd.x - x);
+}
+
+
+
+