Transform.hpp

 
//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2023 Bruno Van de Velde (vdv_b@tgui.eu)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
 
 
#ifndef TGUI_TRANSFORM_HPP
#define TGUI_TRANSFORM_HPP
 
 
#include <TGUI/Config.hpp>
#include <TGUI/Rect.hpp>
 
#if !TGUI_EXPERIMENTAL_USE_STD_MODULE
 #include <array>
#endif
 
 
TGUI_MODULE_EXPORT namespace tgui
{
 // Based on sf::Transform from SFML
 class TGUI_API Transform
 {
 public:
 
 Transform();
 
 
 Transform(float a00, float a01, float a02,
 float a10, float a11, float a12,
 float a20, float a21, float a22);
 
 
 Transform(const std::array<float, 16>& matrix);
 
 
 TGUI_NODISCARD const std::array<float, 16>& getMatrix() const;
 
 
 TGUI_NODISCARD Transform getInverse() const;
 
 
 TGUI_NODISCARD Vector2f transformPoint(const Vector2f& point) const;
 
 
 TGUI_NODISCARD FloatRect transformRect(const FloatRect& rectangle) const;
 
 
 Transform& combine(const Transform& other);
 
 
 Transform& translate(const Vector2f& offset);
 
 
 Transform& rotate(float angle, const Vector2f& center = {0, 0});
 
 
 Transform& scale(const Vector2f& factors, const Vector2f& center = {0, 0});
 
 
 TGUI_NODISCARD Transform operator *(const Transform& right) const;
 Transform& operator *=(const Transform& right);
 TGUI_NODISCARD Vector2f operator *(const Vector2f& right) const;
 
 
 void roundPosition(float pixelScaleX, float pixelScaleY);
 
 
 private:
 
 std::array<float, 16> m_matrix; 
 };
}
 
 
#endif // TGUI_TRANSFORM_HPP