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077a220c51
A cubemap texture initialization has been implemented. Setting environment cubemap as interactive background is posssible now.
108 lines
4.4 KiB
C++
108 lines
4.4 KiB
C++
// Created on: 2015-01-16
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// Created by: Anastasia BORISOVA
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// Copyright (c) 2015 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef OpenGl_BackgroundArray_Header
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#define OpenGl_BackgroundArray_Header
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#include <Aspect_GradientFillMethod.hxx>
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#include <Aspect_FillMethod.hxx>
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#include <Graphic3d_TypeOfBackground.hxx>
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#include <OpenGl_Aspects.hxx>
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#include <OpenGl_PrimitiveArray.hxx>
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#include <OpenGl_Vec.hxx>
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#include <OpenGl_Workspace.hxx>
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//! Tool class for generating reusable data for
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//! gradient or texture background rendering.
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class OpenGl_BackgroundArray : public OpenGl_PrimitiveArray
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{
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public:
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//! Main constructor.
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Standard_EXPORT OpenGl_BackgroundArray (const Graphic3d_TypeOfBackground theType);
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//! Render primitives to the window
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Standard_EXPORT virtual void Render (const Handle(OpenGl_Workspace)& theWorkspace) const Standard_OVERRIDE;
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//! Check if background parameters are set properly
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Standard_EXPORT bool IsDefined() const;
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//! Sets background texture parameters
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Standard_EXPORT void SetTextureParameters (const Aspect_FillMethod theFillMethod);
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//! Sets texture fill method
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Standard_EXPORT void SetTextureFillMethod (const Aspect_FillMethod theFillMethod);
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//! Gets background texture fill method
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Aspect_FillMethod TextureFillMethod() const { return myFillMethod; }
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//! Gets background gradient fill method
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Aspect_GradientFillMethod GradientFillMethod() const { return myGradientParams.type; }
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//! Returns color of gradient background for the given index.
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const OpenGl_Vec4& GradientColor (const Standard_Integer theIndex) const { return (&myGradientParams.color1)[theIndex]; }
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//! Sets type of gradient fill method
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Standard_EXPORT void SetGradientFillMethod (const Aspect_GradientFillMethod theType);
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//! Sets background gradient parameters
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Standard_EXPORT void SetGradientParameters (const Quantity_Color& theColor1,
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const Quantity_Color& theColor2,
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const Aspect_GradientFillMethod theType);
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protected: //! @name Internal structure for storing gradient parameters
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struct OpenGl_GradientParameters
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{
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OpenGl_Vec4 color1;
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OpenGl_Vec4 color2;
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Aspect_GradientFillMethod type;
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};
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protected:
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//! Fill attributes arrays for background array according to its type:
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//! - for gradient background its attributes consist of colors and gradient coordinates
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//! - for texture one its attributes consist of position and texture coordinates.
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Standard_EXPORT Standard_Boolean init (const Handle(OpenGl_Workspace)& theWorkspace) const;
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//! Initializes gradient arrays.
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Standard_EXPORT Standard_Boolean createGradientArray() const;
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//! Initializes texture arrays.
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//! @param theWorkspace OpenGl workspace that stores texture in the current enabled face aspect.
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Standard_EXPORT Standard_Boolean createTextureArray (const Handle(OpenGl_Workspace)& theWorkspace) const;
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//! Initializes cubemap arrays.
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Standard_EXPORT Standard_Boolean createCubeMapArray() const;
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//! Marks array parameters as changed,
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//! on next rendering stage array data is to be updated.
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Standard_EXPORT void invalidateData();
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protected:
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Graphic3d_TransformPers myTrsfPers; //!< transformation persistence
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Graphic3d_TypeOfBackground myType; //!< Type of background: texture or gradient.
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Aspect_FillMethod myFillMethod; //!< Texture parameters
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mutable OpenGl_GradientParameters myGradientParams; //!< Gradient parameters
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mutable Standard_Integer myViewWidth; //!< view width used for array initialization
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mutable Standard_Integer myViewHeight; //!< view height used for array initialization
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mutable Standard_Boolean myToUpdate; //!< Shows if array parameters were changed and data (myAttribs storage) is to be updated
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};
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#endif // OpenGl_BackgroundArray_Header
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