// Created on: 2011-07-13
// Created by: Sergey ZERCHANINOV
// Copyright (c) 2011-2012 OPEN CASCADE SAS
//
// The content of this file is subject to the Open CASCADE Technology Public
// License Version 6.5 (the "License"). You may not use the content of this file
// except in compliance with the License. Please obtain a copy of the License
// at http://www.opencascade.org and read it completely before using this file.
//
// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
//
// The Original Code and all software distributed under the License is
// distributed on an "AS IS" basis, without warranty of any kind, and the
// Initial Developer hereby disclaims all such warranties, including without
// limitation, any warranties of merchantability, fitness for a particular
// purpose or non-infringement. Please see the License for the specific terms
// and conditions governing the rights and limitations under the License.


#ifndef OpenGl_QuadrangleStrip_Header
#define OpenGl_QuadrangleStrip_Header

#include <InterfaceGraphic_telem.hxx>
#include <Graphic3d_Array2OfVertex.hxx>
#include <Graphic3d_Array2OfVertexN.hxx>
#include <Graphic3d_Array2OfVertexNT.hxx>
#include <Aspect_InteriorStyle.hxx>

#include <OpenGl_Element.hxx>

struct OPENGL_QSTRIP_DATA
{
  Tint       shape_flag;  /* TEL_SHAPE_UNKNOWN or TEL_SHAPE_COMPLEX or
                          TEL_SHAPE_CONVEX  or TEL_SHAPE_CONCAVE */
  Tint       facet_flag;  /* TEL_FA_NONE or TEL_FA_NORMAL */
  Tint       vertex_flag; /* TEL_VT_NONE or TEL_VT_NORMAL */
  Tint       num_rows, num_columns; /* Number of rows and columns */
  tel_point  fnormals;    /* Facet normals */
  tel_colour fcolours;    /* Facet colours */
  tel_point  vertices;    /* Vertices */
  tel_colour vcolours;    /* Vertex colour values */
  tel_point  vnormals;    /* Vertex normals */
  tel_texture_coord vtexturecoord; /* Texture coordinates */
  DEFINE_STANDARD_ALLOC
};

class OpenGl_QuadrangleStrip : public OpenGl_Element
{
 public:

  OpenGl_QuadrangleStrip (const Graphic3d_Array2OfVertex& AListVertex);
  OpenGl_QuadrangleStrip (const Graphic3d_Array2OfVertexN& AListVertex);
  OpenGl_QuadrangleStrip (const Graphic3d_Array2OfVertexNT& AListVertex);
  virtual ~OpenGl_QuadrangleStrip ();

  virtual void Render (const Handle(OpenGl_Workspace) &AWorkspace) const;

 protected:

  void Init (const Tint ANbRows, const Tint ANbCols, tel_point AVertices,
             tel_point AVNormals, tel_colour AVColors, tel_texture_coord ATCoords,
             tel_point AFNormals, tel_colour AFColors, const Tint AShapeFlag);

  void draw_qstrip (const Tint,          /* front_lighting_model,  */
                    const Aspect_InteriorStyle, /* interior_style, */
                    const TEL_COLOUR *, /* edge_colour, */
                    const Handle(OpenGl_Workspace) &) const;

  void draw_edges (const TEL_COLOUR *, const Aspect_InteriorStyle, Tint, const Handle(OpenGl_Workspace) &) const;

  void draw_line_strip (const TEL_COLOUR *, Tint, Tint) const;

  OPENGL_QSTRIP_DATA myData;
  DS_INTERNAL *myDS;

 public:
  DEFINE_STANDARD_ALLOC
};

#endif //OpenGl_QuadrangleStrip_Header