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 * Copyright (C) 1991-94, Silicon Graphics, Inc. * 00039 * These coded instructions, statements, and computer programs contain * 00040 * unpublished proprietary information of Silicon Graphics, Inc., and * 00041 * are protected by Federal copyright law. They may not be disclosed * 00042 * to third parties or copied or duplicated in any form, in whole or * 00043 * in part, without the prior written consent of Silicon Graphics, Inc. * 00044 **************************************************************************/ 00045 00046 00047 /* 00048 * 00049 _______________________________________________________________________ 00050 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00051 | 00052 | $Revision: 1.1.1.1 $ 00053 | 00054 | Description: 00055 | This file defines the SoAsciiText node class. 00056 | 00057 | Author(s) : Chris Marrin, Gavin Bell 00058 | 00059 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00060 _______________________________________________________________________ 00061 */ 00062 00063 #ifndef _SO_ASCIITEXT_ 00064 #define _SO_ASCIITEXT_ 00065 00066 #include <Inventor/SbBox.h> 00067 #include <Inventor/fields/SoMFString.h> 00068 #include <Inventor/fields/SoSFEnum.h> 00069 #include <Inventor/fields/SoSFBitMask.h> 00070 #include <Inventor/fields/SoSFFloat.h> 00071 #include <Inventor/fields/SoMFFloat.h> 00072 #include <Inventor/nodes/SoShape.h> 00073 00074 #include <Inventor/system/SbOpenGL.h> // For GLenum declaration 00075 00077 #ifndef gluTESSELATOR 00078 #if defined(__glu_h__) && (GLU_VERSION_1_2) 00079 #define gluTESSELATOR GLUtesselator 00080 #else 00081 #define gluTESSELATOR GLUtriangulatorObj 00082 extern "C" struct GLUtriangulatorObj; 00083 #endif 00084 #endif 00085 00086 00087 00088 class MyOutlineFontCache; 00089 class SoPrimitiveVertex; 00090 class SoTextureCoordinateElement; 00091 00094 00146 00147 00148 class INVENTOR_API SoAsciiText : public SoShape { 00149 00150 SO_NODE_HEADER(SoAsciiText); 00151 00152 public: 00154 enum Justification { 00155 LEFT = 0x01, 00156 RIGHT = 0x02, 00157 CENTER = 0x03 00158 }; 00159 00161 00162 00164 SoMFString string; 00165 00170 SoSFFloat spacing; 00171 00178 SoSFEnum justification; 00179 00182 SoMFFloat width; 00183 00185 00187 SoAsciiText(); 00188 00189 SoEXTENDER public: 00190 00191 virtual void GLRender(SoGLRenderAction *action); 00192 virtual void rayPick(SoRayPickAction *action); 00193 00194 SoINTERNAL public: 00195 static void initClass(); 00196 00197 protected: 00199 virtual void computeBBox(SoAction *action, SbBox3f &box, 00200 SbVec3f ¢er); 00201 00203 virtual void generatePrimitives(SoAction *); 00204 00205 virtual ~SoAsciiText(); 00206 00207 private: 00209 SbBool setupFontCache(SoState *state, SbBool forRender = FALSE); 00210 00212 void getFrontBBox(SbBox2f &result); 00213 00215 00218 SbVec2f getStringOffset(int line, float width); 00219 00221 void renderFront(SoGLRenderAction *action, const SbString &string, 00222 float width, GLUtriangulatorObj *tobj); 00223 00225 SoDetail * createTriangleDetail(SoRayPickAction *, 00226 const SoPrimitiveVertex *, 00227 const SoPrimitiveVertex *, 00228 const SoPrimitiveVertex *, 00229 SoPickedPoint *); 00230 00233 void generateFront(const SbString &string, float width); 00234 00236 static void CALLBACK beginCB(GLenum primType); 00237 static void CALLBACK endCB(); 00238 static void CALLBACK vtxCB(void *vertex); 00239 00244 MyOutlineFontCache *myFont; 00245 00247 static SoAsciiText *currentGeneratingNode; 00248 static SoPrimitiveVertex *genPrimVerts[3]; 00249 static SbVec3f genTranslate; 00250 static int genWhichVertex; 00251 static uint32_t genPrimType; 00252 static SoAction *genAction; 00253 static SbBool genBack; 00254 static SbBool genTexCoord; 00255 static const SoTextureCoordinateElement *tce; 00256 }; 00257 00258 #endif /* _SO_ASCIITEXT_ */