Recovered from microbel

common/lib/utils/beam.C

@@ -0,0 +1,80 @@
+/*
+ * PVVMUD a 3D MUD
+ * Copyright (C) 1998-1999  Programvareverkstedet (pvv@pvv.org)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#include "pvvmud.H"
+#include "beam.H"
+
+
+CBeam::CBeam(){
+}
+
+CBeam::CBeam(const CVector & point,const CVector & direction){
+  m_point = point;
+  m_direction = direction;
+}
+
+CBeam::CBeam(const CVertex & point,const CVector & direction){
+  m_point = CVector(point.getX(),point.getY(),point.getZ());
+  m_direction = direction;
+}
+
+CBeam::CBeam(const CPosition & point,const CVector & direction){
+  m_point = CVector(point.getX(),point.getY(),point.getZ());
+  m_direction = direction;
+}
+
+const CVector & CBeam::getPoint() const{
+  return m_point;
+}
+const CVector & CBeam::getDirection() const{
+  return m_direction;
+}
+
+CBeam CBeam::operator+ (const CPosition& position) const{
+  CBeam result;
+  result = *this;
+  CVector pos(position.getX(),position.getY(),position.getZ());
+  result.m_point += pos; 
+  return result;
+}
+
+void CBeam::transform(const CMatrix & transformation){
+  CVector p2 = m_point + m_direction;
+  m_point.transform(transformation);
+  p2.transform(transformation);
+  m_direction = p2 - m_point;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// CBeam::intersect
+// Info          : Check intersection between beam and a bBox
+// Return        : Return true if beam intersect with bBox
+// Implementation: HACK only check if point inside in XY plane
+///////////////////////////////////////////////////////////////////////////////
+int CBeam::intersect(const CBBox & bBox) const {
+//  cdebug << "CBeam::intersect : Hack impl.\n";
+  return  bBox.insideXY(m_point);
+}
+
+ostream& operator<<(ostream&s,const CBeam& b){
+  return s << "( P: " << b.getPoint() << ", D: " << b.getDirection() << " )";
+}
+
+
+