Open Inventor Reference
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00001 /* 00002 * 00003 * Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved. 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Lesser General Public 00007 * License as published by the Free Software Foundation; either 00008 * version 2.1 of the License, or (at your option) any later version. 00009 * 00010 * This library is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 * Lesser General Public License for more details. 00014 * 00015 * Further, this software is distributed without any warranty that it is 00016 * free of the rightful claim of any third person regarding infringement 00017 * or the like. Any license provided herein, whether implied or 00018 * otherwise, applies only to this software file. Patent licenses, if 00019 * any, provided herein do not apply to combinations of this program with 00020 * other software, or any other product whatsoever. 00021 * 00022 * You should have received a copy of the GNU Lesser General Public 00023 * License along with this library; if not, write to the Free Software 00024 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00025 * 00026 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 00027 * Mountain View, CA 94043, or: 00028 * 00029 * http://www.sgi.com 00030 * 00031 * For further information regarding this notice, see: 00032 * 00033 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ 00034 * 00035 */ 00036 00037 00038 /* 00039 * Copyright (C) 1990,91,92 Silicon Graphics, Inc. 00040 * 00041 _______________________________________________________________________ 00042 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00043 | 00044 | $Revision: 1.1.1.1 $ 00045 | 00046 | Description: 00047 | This file defines the RotateSpherical dragger class. 00048 | This is a simple dragger that returns a rotation 00049 | based on vectors from the center of the sphere to its surface. 00050 | 00051 | The mouse position is projected onto a sphere determined 00052 | by a center and the radius. The radius is determined from 00053 | the distance from the center to the initial hit point. 00054 | 00055 | NOTE TO DEVELOPERS: 00056 | For info about the structure of SoRotateSphericalDragger: 00057 | [1] compile: /usr/share/src/Inventor/samples/ivNodeKitStructure 00058 | [2] type: ivNodeKitStructure SoRotateSphericalDragger. 00059 | [3] The program prints a diagram of the scene graph and a table with 00060 | information about each part. 00061 | 00062 | The following parts in this dragger are created at construction time. 00063 | 'ResourceName' corresponds to the name of the default geometry for the 00064 | part. The dragger's constructor gets the scene graph for 'ResourceName' 00065 | by querying the global dictionary ( SoDB::getByName("ResourceName"); ). 00066 | 00067 | Resource Name: Part Name: 00068 | 00069 | rotateSphericalRotator - rotator 00070 | rotateSphericalRotatorActive - rotatorActive 00071 | rotateSphericalFeedback - feedback 00072 | rotateSphericalFeedbackActive - feedbackActive 00073 | 00074 | Author(s): Paul Isaacs, Howard Look 00075 | 00076 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00077 _______________________________________________________________________ 00078 */ 00079 00080 #ifndef _SO_ROTATE_SPHERICAL_DRAGGER_ 00081 #define _SO_ROTATE_SPHERICAL_DRAGGER_ 00082 00083 #include <Inventor/SbLinear.h> 00084 #include <Inventor/draggers/SoDragger.h> 00085 #include <Inventor/fields/SoSFRotation.h> 00086 #include <Inventor/sensors/SoSensor.h> 00087 00088 00089 class SbDict; 00090 class SbSphereProjector; 00091 class SoFieldSensor; 00092 00095 00146 00147 00148 class INVENTOR_API SoRotateSphericalDragger : public SoDragger 00149 { 00150 SO_KIT_HEADER(SoRotateSphericalDragger); 00151 00152 SO_KIT_CATALOG_ENTRY_HEADER(rotatorSwitch); 00153 SO_KIT_CATALOG_ENTRY_HEADER(rotator); 00154 SO_KIT_CATALOG_ENTRY_HEADER(rotatorActive); 00155 SO_KIT_CATALOG_ENTRY_HEADER(feedbackSwitch); 00156 SO_KIT_CATALOG_ENTRY_HEADER(feedback); 00157 SO_KIT_CATALOG_ENTRY_HEADER(feedbackActive); 00158 00159 public: 00160 00162 SoRotateSphericalDragger(); 00163 00164 SoSFRotation rotation; 00165 00179 void setProjector(SbSphereProjector *p); 00181 const SbSphereProjector * getProjector() const { return sphereProj; } 00182 00183 SoINTERNAL public: 00184 static void initClass(); 00185 00186 protected: 00187 00188 SbMatrix prevMotionMatrix; 00189 SbVec3f prevWorldHitPt; 00190 SbSphereProjector *sphereProj; 00191 SbBool userProj; 00192 00195 virtual void copyContents(const SoFieldContainer *fromFC, 00196 SbBool copyConnections); 00197 00198 static void startCB( void *, SoDragger * ); 00199 static void motionCB( void *, SoDragger * ); 00200 static void doneCB( void *, SoDragger * ); 00201 00202 SoFieldSensor *fieldSensor; 00203 static void fieldSensorCB( void *, SoSensor * ); 00204 static void valueChangedCB( void *, SoDragger * ); 00205 00206 void dragStart(); 00207 void drag(); 00208 void dragFinish(); 00209 00216 virtual SbBool setUpConnections( SbBool onOff, SbBool doItAlways = FALSE ); 00217 00218 virtual ~SoRotateSphericalDragger(); 00219 00220 private: 00222 static const char geomBuffer[]; 00223 }; 00224 00225 00226 #endif /* _SO_ROTATE_SPHERICAL_DRAGGER_ */ 00227 00228