1 // Copyright (c) 2019 OPEN CASCADE SAS 2 // 3 // This file is part of Open CASCADE Technology software library. 4 // 5 // This library is free software; you can redistribute it and/or modify it under 6 // the terms of the GNU Lesser General Public License version 2.1 as published 7 // by the Free Software Foundation, with special exception defined in the file 8 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 9 // distribution for complete text of the license and disclaimer of any warranty. 10 // 11 // Alternatively, this file may be used under the terms of Open CASCADE 12 // commercial license or contractual agreement. 13 14 #ifndef _OpenGl_AspectsSprite_Header 15 #define _OpenGl_AspectsSprite_Header 16 17 #include <Graphic3d_Aspects.hxx> 18 #include <Graphic3d_TextureMap.hxx> 19 20 class OpenGl_Context; 21 class OpenGl_PointSprite; 22 23 //! OpenGl resources for custom point sprites. 24 class OpenGl_AspectsSprite 25 { 26 public: 27 DEFINE_STANDARD_ALLOC 28 public: 29 //! Empty constructor. OpenGl_AspectsSprite()30 OpenGl_AspectsSprite() : myMarkerSize (1.0f), myIsSpriteReady (Standard_False) {} 31 MarkerSize() const32 Standard_ShortReal MarkerSize() const { return myMarkerSize; } 33 34 //! Return TRUE if resource is up-to-date. IsReady() const35 bool IsReady() const { return myIsSpriteReady; } 36 37 //! Invalidate resource state. Invalidate()38 void Invalidate() { myIsSpriteReady = false; } 39 40 //! Return TRUE if OpenGl point sprite resource defines texture. 41 Standard_EXPORT bool HasPointSprite (const Handle(OpenGl_Context)& theCtx, 42 const Handle(Graphic3d_Aspects)& theAspects); 43 44 //! Return TRUE if OpenGl point sprite resource defined by obsolete Display List (bitmap). 45 Standard_EXPORT bool IsDisplayListSprite (const Handle(OpenGl_Context)& theCtx, 46 const Handle(Graphic3d_Aspects)& theAspects); 47 48 //! Return sprite. 49 Standard_EXPORT const Handle(OpenGl_PointSprite)& Sprite (const Handle(OpenGl_Context)& theCtx, 50 const Handle(Graphic3d_Aspects)& theAspects, 51 bool theIsAlphaSprite); 52 53 //! Update texture resource up-to-date state. 54 Standard_EXPORT void UpdateRediness (const Handle(Graphic3d_Aspects)& theAspect); 55 56 //! Release texture resource. 57 Standard_EXPORT void Release (OpenGl_Context* theCtx); 58 59 private: 60 61 //! Build texture resources. 62 Standard_EXPORT void build (const Handle(OpenGl_Context)& theCtx, 63 const Handle(Graphic3d_MarkerImage)& theMarkerImage, 64 Aspect_TypeOfMarker theType, 65 Standard_ShortReal theScale, 66 const Graphic3d_Vec4& theColor, 67 Standard_ShortReal& theMarkerSize); 68 69 //! Generate resource keys for a sprite. 70 static void spriteKeys (const Handle(Graphic3d_MarkerImage)& theMarkerImage, 71 Aspect_TypeOfMarker theType, 72 Standard_ShortReal theScale, 73 const Graphic3d_Vec4& theColor, 74 TCollection_AsciiString& theKey, 75 TCollection_AsciiString& theKeyA); 76 77 private: 78 79 Handle(OpenGl_PointSprite) mySprite; 80 Handle(OpenGl_PointSprite) mySpriteA; 81 Standard_ShortReal myMarkerSize; 82 Standard_Boolean myIsSpriteReady; 83 84 }; 85 86 #endif // _OpenGl_Aspects_Header 87