TRSTransform.h

Go to the documentation of this file.

#pragma once
 
#include <glm/glm.hpp>
#define GLM_ENABLE_EXPERIMENTAL
#include <glm/gtx/io.hpp>
 
#include <iostream>
 
template<typename T, glm::precision P>
class TRSTransform {
 
public:
    TRSTransform();
    ~TRSTransform();
 
public:
    // Reset the transformation to the identity matrix
    void ResetTransform();
 
    // Relative transformations: combine new transform with existing ones.
 
    void Translate(glm::tvec3<T, P> v);
    void Scale(glm::tvec3<T, P> v);
    void Scale(T uniform);
 
    // Rotate around vector (x, y, z)
    // - Perform `new = current * newRotation`
    void Rotate(T angle, glm::tvec3<T, P> v);
    void RotateX(T angle);
    void RotateY(T angle);
    void RotateZ(T angle);
    // - Perform `new = newRotation * current`
    void PreRotate(T angle, glm::tvec3<T, P> v);
    void PreRotateX(T angle);
    void PreRotateY(T angle);
    void PreRotateZ(T angle);
 
 
    // Absolute transformations: overwrite existing transformations with new ones.
 
    void SetTranslate(glm::tvec3<T, P> v);
    void SetScale(glm::tvec3<T, P> v);
    void SetScale(T uniform);
 
    // Rotate around vector (x, y, z)
    void SetRotate(T angle, glm::tvec3<T, P> v);
    void SetRotateX(T angle);
    void SetRotateY(T angle);
    void SetRotateZ(T angle);
 
 
    void LookTowards(glm::tvec3<T, P> front_vec, glm::tvec3<T, P> up_vec);
    void LookTowards(glm::tvec3<T, P> front_vec);
    void LookAt(glm::tvec3<T, P> point, glm::tvec3<T, P> up_vec);
    void LookAt(glm::tvec3<T, P> point);
 
 
    // Useful getters
 
    glm::tmat4x4<T, P> GetMatrix() const;
    glm::tmat4x4<T, P> GetMatrixInverse() const;
 
    glm::tmat3x3<T, P> GetRotation() const;
    glm::tvec3<T, P> GetTranslation() const;
    glm::tvec3<T, P> GetScale() const;
 
    glm::tmat4x4<T, P> GetTranslationMatrix() const;
    glm::tmat4x4<T, P> GetRotationMatrix() const;
    glm::tmat4x4<T, P> GetScaleMatrix() const;
 
    glm::tmat4x4<T, P> GetTranslationMatrixInverse() const;
    glm::tmat4x4<T, P> GetRotationMatrixInverse() const;
    glm::tmat4x4<T, P> GetScaleMatrixInverse() const;
 
    glm::tmat4x4<T, P> GetTranslationRotationMatrix() const;
 
    glm::tvec3<T, P> GetUp() const;
    glm::tvec3<T, P> GetDown() const;
    glm::tvec3<T, P> GetLeft() const;
    glm::tvec3<T, P> GetRight() const;
    glm::tvec3<T, P> GetFront() const;
    glm::tvec3<T, P> GetBack() const;
 
protected:
    glm::tmat3x3<T, P>  mR;
    glm::tvec3<T, P>    mT;
    glm::tvec3<T, P>    mS;
 
public:
    friend std::ostream &operator<<(std::ostream &os, TRSTransform<T, P> &v)
    {
        os << v.mT << std::endl;
        os << v.mR << std::endl;
        os << v.mS << std::endl;
        return os;
    }
    friend std::istream &operator>>(std::istream &is, TRSTransform<T, P> &v)
    {
        is >> v.mT;
        is >> v.mR;
        is >> v.mS;
        return is;
    }
};
 
#include "TRSTransform.inl"
 
using TRSTransformf = TRSTransform<float, glm::defaultp>;
using TRSTransformd = TRSTransform<double, glm::defaultp>;