35 lines
810 B
C++
35 lines
810 B
C++
#pragma once
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#include "math.hpp"
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class Camera {
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public:
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void Pan(const WorldPos &delta);
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void Zoom(float delta);
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WorldPos GetPan() const { return m_Pan; }
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float GetZoom() const { return m_Zoom; }
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WindowPos WorldToWindow(WorldPos) const;
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WorldPos WindowToWorld(WindowPos) const;
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WindowSize WorldToWindowSize(WorldSize) const;
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WorldSize WindowToWorldSize(WindowSize) const;
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template <typename T>
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requires std::floating_point<T>
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T WindowToWorldSize(T window_size) const {
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return window_size / static_cast<T>(m_Zoom);
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}
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template <typename T>
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requires std::floating_point<T>
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T WorldToWindowSize(T world_size) const {
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return world_size * static_cast<T>(m_Zoom);
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}
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private:
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// TODO this should be replaced with a matrix
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float m_Zoom = 1.0f;
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WorldPos m_Pan;
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};
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