viewmatrix.h

//##################################################################################################
//
// Copyright (c) 2024 Beijing Qiongqi Tech Co.,Ltd. All rights reserved. 
 
// This source code is confidential and proprietary to Beijing Qiongqi Tech Co.,Ltd(The Holder). 
// Any unauthorized use, copying, modification, or distribution of the code is strictly prohibited. 
// Any user shall obtain authorizaition from the Holder before modifying the source code. And the user shall not
// sublicense, sell, distribute, or transfer the source code, whether in original or modified form, to any third party
// without the prior written consent of the Holder.
 
// This copyright notice and permission grant shall be included in all copies or substantial portions of the source code.
 
// Author  Cumulia Illustrator
// Date    2024-05-01
// Version V1.0.0
//##################################################################################################
 
#pragma once
 
#include <memory>
 
namespace cil
{
    class Vector3f;
    class Matrix4f;
 
    struct ViewSpec {
        std::shared_ptr<Vector3f> right;
        std::shared_ptr<Vector3f> up;
        std::shared_ptr<Vector3f> dir;
        std::shared_ptr<Vector3f> eye;
    };
 
    ViewSpec getViewSpec(const Matrix4f& matrix);
 
    void setViewSpec(Matrix4f& matrix, const ViewSpec& viewSpec);
 
    void lookAt(Matrix4f& viewMatrix, const Vector3f& eye, const Vector3f& vrp, const Vector3f& up);
}