sphericalmirror.h

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/*****************************************************************************************
 * SGCT                                                                                  *
 * Simple Graphics Cluster Toolkit                                                       *
 *                                                                                       *
 * Copyright (c) 2012-2026                                                               *
 * For conditions of distribution and use, see copyright notice in LICENSE.md            *
 ****************************************************************************************/
 
#ifndef __SGCT__SPHERICALMIRROR__H__
#define __SGCT__SPHERICALMIRROR__H__
 
#include <sgct/sgctexports.h>
#include <sgct/projection/nonlinearprojection.h>
 
#include <sgct/correctionmesh.h>
#include <sgct/shaderprogram.h>
 
namespace sgct {
 
namespace config { struct SphericalMirrorProjection; }
class BaseViewport;
class User;
class Window;

class SGCT_EXPORT SphericalMirrorProjection final : public NonLinearProjection {
public:
    SphericalMirrorProjection(const config::SphericalMirrorProjection& config,
        const Window& parent, User& user);
    ~SphericalMirrorProjection() final;
 
    void update(const vec2& size) const override;

    void render(const BaseViewport& viewport, FrustumMode frustumMode) const override;

    void renderCubemap(FrustumMode frustumMode) const override;

    void setTilt(float angle);
 
private:
    void initTextures(unsigned int internalFormat) override;
    void initVBO() override;
    void initViewports() override;
    void initShaders() override;
 
    float _tilt;
    float _diameter = 2.4f;
 
    // mesh data
    CorrectionMesh _meshBottom;
    CorrectionMesh _meshLeft;
    CorrectionMesh _meshRight;
    CorrectionMesh _meshTop;
    std::string _meshPathBottom;
    std::string _meshPathLeft;
    std::string _meshPathRight;
    std::string _meshPathTop;
 
    // shader locations
    int _texLoc = -1;
    int _matrixLoc = -1;
    ShaderProgram _shader;
    ShaderProgram _depthCorrectionShader;
};
 
} // namespace sgct
 
#endif // __SGCT__SPHERICALMIRROR__H__