projection.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__PROJECTION__H__
#define __SGCT__PROJECTION__H__
 
#include <sgct/sgctexports.h>
 
#include <sgct/math.h>
 
namespace sgct {
 
class ProjectionPlane;

class SGCT_EXPORT Projection {
public:
    void calculateProjection(vec3 base, const ProjectionPlane& proj, float nearClip,
        float farClip, vec3 offset = vec3{ 0.f, 0.f, 0.f });
 
    const mat4& viewProjectionMatrix() const;
    const mat4& viewMatrix() const;
    const mat4& projectionMatrix() const;
 
private:
    struct Frustum {
        float left = -1.f;
        float right = 1.f;
        float bottom = -1.f;
        float top = 1.f;
        float nearPlane = 0.1f;
        float farPlane = 100.f;
    };
 
    mat4 _viewMatrix = mat4(1.f);
    mat4 _viewProjectionMatrix = mat4(1.f);
    mat4 _projectionMatrix = mat4(1.f);
 
    Frustum _frustum;
};
 
} // namespace sgct
 
#endif // __SGCT__PROJECTION__H__