00001 //------------------------------------------------------------------------ 00002 // 00003 // Joe Kniss 00004 // 8-20-03 00005 // ________ ____ ___ 00006 // | \ / | / / 00007 // +---+ \/ |/ / 00008 // +--+| |\ /| < 00009 // | || | \ / | |\ \ 00010 // | | \/ | | \ \ 00011 // \_____| |__| \__\ 00012 // Copyright 2003 00013 // Joe Michael Kniss 00014 // <<< jmk@cs.utah.edu >>> 00015 // "All Your Base are Belong to Us" 00016 //------------------------------------------------------------------------- 00017 00018 /// Constraint.h 00019 00020 #ifndef __WIDGET_CONSTRAINT_DOT_H 00021 #define __WIDGET_CONSTRAINT_DOT_H 00022 00023 #include <mathGutz.h> 00024 #include <eventGutz.h> 00025 #include "WidgetDefs.h" 00026 00027 /////////////////////////////////////////////////////////////////////////// 00028 /// a base class for widget constraints, also implements the 00029 /// "Free Move" constraint, which is really no constraint at all :) 00030 /////////////////////////////////////////////////////////////////////////// 00031 class Constraint : public gutz::Counted { 00032 public: 00033 Constraint(){} 00034 virtual ~Constraint() {} 00035 00036 /// getMoveBy, returs space delta, takes the current space 00037 /// position (not the pick pos, but the point that needs to be constrained), 00038 /// and the move event. 00039 virtual gutz::vec3f getMoveBy(gutz::vec3f pos, const gutz::MouseMoveEvent &mme) const 00040 { return mme.getWorldDel(); } 00041 00042 protected: 00043 }; 00044 typedef gutz::SmartPtr<Constraint> ConstraintSP; 00045 00046 /// maps a gutz button to a constraint. 00047 typedef std::map<unsigned int,ConstraintSP,gutz::eventKeyMapCmp> ConstraintMap; 00048 00049 00050 /////////////////////////////////////////////////////////////////////////// 00051 /// constrain to plane, makes sure moves stay on the plane and below the mouse 00052 /////////////////////////////////////////////////////////////////////////// 00053 class PlaneConstraint : public Constraint { 00054 public: 00055 PlaneConstraint(const gutz::planef &pl) 00056 : Constraint(), _plane(pl) 00057 {} 00058 virtual ~PlaneConstraint() {} 00059 00060 virtual gutz::vec3f getMoveBy(gutz::vec3f pos, const gutz::MouseMoveEvent &mme) 00061 { return mme.getWorldDel(); } 00062 00063 void setPlane(const gutz::planef &pl) { _plane = pl; } 00064 gutz::planef getPlane() const { return _plane; } 00065 00066 protected: 00067 gutz::planef _plane; 00068 }; 00069 typedef gutz::SmartPtr<PlaneConstraint> PlaneConstraintSP; 00070 00071 00072 #endif 00073 00074
