OpenCAX/entry/src/main/cpp/include/opencascade/AIS_CameraFrustum.hxx
2026-03-25 22:31:31 +08:00

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// Created on: 2018-12-12
// Created by: Olga SURYANINOVA
// Copyright (c) 2018 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _AIS_CameraFrustum_HeaderFile
#define _AIS_CameraFrustum_HeaderFile
#include <AIS_InteractiveObject.hxx>
class Graphic3d_ArrayOfSegments;
class Graphic3d_ArrayOfTriangles;
//! Presentation for drawing camera frustum.
//! Default configuration is built with filling and some transparency.
class AIS_CameraFrustum : public AIS_InteractiveObject
{
DEFINE_STANDARD_RTTIEXT(AIS_CameraFrustum, AIS_InteractiveObject)
public:
//! Selection modes supported by this object
enum SelectionMode
{
SelectionMode_Edges = 0, //!< detect by edges (default)
SelectionMode_Volume = 1, //!< detect by volume
};
public:
//! Constructs camera frustum with default configuration.
Standard_EXPORT AIS_CameraFrustum();
//! Sets camera frustum.
Standard_EXPORT void SetCameraFrustum(const occ::handle<Graphic3d_Camera>& theCamera);
//! Setup custom color.
Standard_EXPORT void SetColor(const Quantity_Color& theColor) override;
//! Restore default color.
Standard_EXPORT void UnsetColor() override;
//! Restore transparency setting.
Standard_EXPORT void UnsetTransparency() override;
//! Return true if specified display mode is supported.
Standard_EXPORT bool AcceptDisplayMode(const int theMode) const override;
protected:
//! Computes presentation of camera frustum.
Standard_EXPORT void Compute(const occ::handle<PrsMgr_PresentationManager>& thePrsMgr,
const occ::handle<Prs3d_Presentation>& thePrs,
const int theMode) override;
//! Compute selection.
Standard_EXPORT void ComputeSelection(const occ::handle<SelectMgr_Selection>& theSelection,
const int theMode) override;
private:
//! Fills triangles primitive array for camera frustum filling.
void fillTriangles();
//! Fills polylines primitive array for camera frustum borders.
void fillBorders();
protected:
NCollection_Array1<NCollection_Vec3<double>> myPoints; //!< Array of points
occ::handle<Graphic3d_ArrayOfTriangles> myTriangles; //!< Triangles for camera frustum filling
occ::handle<Graphic3d_ArrayOfSegments> myBorders; //!< Segments for camera frustum borders
};
#endif // _AIS_CameraFrustum_HeaderFile