| Geant4 Cross Reference |
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25 //
26 //
27 //
28 /*-----------------------------Hepvis----------------------------------------*/
29 /* */
30 /* Node: SoCons */
31 /* Description: Represents the G4Cons Geant Geometry entity */
32 /* Author: Joe Boudreau Nov 11 1996 */
33 /* */
34 /*---------------------------------------------------------------------------*/
35 #ifndef HEPVis_SoCons_h
36 #define HEPVis_SoCons_h
37
38 #include <Inventor/fields/SoSFFloat.h>
39 #include <Inventor/fields/SoSFNode.h>
40 #include <Inventor/fields/SoSFBool.h>
41 #include <Inventor/nodes/SoShape.h>
42
43 class SoSFNode;
44 //! SoCons - Inventor version of the G4Cons Geant Geometry entity
45 /*!
46 * Node: SoCons
47 *
48 * Description: The Inventor version of the G4Cons Geant Geometry entity
49 *
50 * Author: Joe Boudreau Nov 11 1996
51 *
52 * A G4Cons is, in the general case, a Phi segment of a cone, with half-length
53 * fDz, inner and outer radii specified at -fDz and +fDz. The Phi segment is
54 * described by a starting fSPhi angle, and the +fDPhi delta angle for the shape.
55 * If the delta angle is >=2*M_PI, the shape is treated as continuous in Phi
56 *
57 * Member Data:
58 *
59 * fRmin1 inside radius at -fDz
60 * fRmin2 inside radius at +fDz
61 * fRmax1 outside radius at -fDz
62 * fRmax2 outside radius at +fDz
63 * fDz half length in z
64 *
65 * fSPhi starting angle of the segment in radians
66 * fDPhi delta angle of the segment in radians
67 */
68
69 #define SoCons Geant4_SoCons
70
71 class SoCons:public SoShape {
72
73 // The following is required:
74 SO_NODE_HEADER(SoCons);
75
76 public:
77
78 //
79 //! Inside radius at -fDz
80 //
81 SoSFFloat fRmin1;
82 //
83 //! Inside radius at +fDz
84 //
85 SoSFFloat fRmin2;
86 //
87 //! Outside radius at -fDz
88 //
89 SoSFFloat fRmax1;
90 //
91 //! Outside radius at +fDz
92 //
93 SoSFFloat fRmax2;
94 //
95 //! Half-length along Z
96 //
97 SoSFFloat fDz;
98 //
99 //! Starting angle, in radians
100 //
101 SoSFFloat fSPhi;
102 //
103 //! Delta-angle, in radians
104 //
105 SoSFFloat fDPhi;
106 //
107 //! An Inventor option - slightly better render, worse performance
108 //
109 SoSFBool smoothDraw;
110 //
111 //! Alternate rep required - for use by users without HEPVis shared objects
112 //
113 SoSFNode alternateRep;
114
115 //
116 //! Constructor, required
117 //
118 SoCons();
119
120 //
121 //! Class Initializer, required
122 //
123 static void initClass();
124
125 //
126 //! Generate AlternateRep, required. Generating an alternate representation
127 //! must be done upon users request. It allows an Inventor program to read
128 //! back the file without requiring *this* code to be dynamically linked.
129 //! If the users expects that *this* code will be dynamically linked, he
130 //! need not invoke this method.
131 //
132 virtual void generateAlternateRep();
133
134 //
135 //! We better be able to clear it, too!
136 //
137 virtual void clearAlternateRep();
138
139 protected:
140
141 //
142 //! compute bounding Box, required
143 //
144 virtual void computeBBox(SoAction *action, SbBox3f &box, SbVec3f ¢er );
145
146 //
147 //! Generate Primitives, required
148 //
149 virtual void generatePrimitives(SoAction *action);
150
151 //
152 //! GetChildList, required whenever the class has hidden children
153 //
154 virtual SoChildList *getChildren() const;
155
156
157 protected:
158 //
159 //! Destructor, required
160 //
161 virtual ~SoCons();
162
163 private:
164
165 //
166 //! Generate Children. Used to create the hidden children. Required whenever
167 //! the node has hidden children.
168 //
169 void generateChildren();
170
171 //
172 //! Used to modify hidden children when a data field is changed. Required
173 //! whenever the class has hidden children.
174 //
175 void updateChildren();
176
177 //
178 //! ChildList. Required whenever the class has hidden children.
179 //
180 SoChildList *children;
181
182 //
183 //! help with trigonometry. increments sines an cosines by an angle.
184 //
185 void inc(double & sinPhi, double & cosPhi, double sinDeltaPhi, double cosDeltaPhi) const {
186 double oldSin=sinPhi,oldCos=cosPhi;
187 sinPhi = oldSin*cosDeltaPhi+oldCos*sinDeltaPhi;
188 cosPhi = oldCos*cosDeltaPhi-oldSin*sinDeltaPhi;
189 }
190 };
191
192 #endif
193