46 lines
920 B
C++
46 lines
920 B
C++
#include "camera.hpp"
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#include "math.hpp"
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#include "log.hpp"
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// for now only pass-through placeholder functions,
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// since we draw the whole map
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void Camera::Pan(const WorldPos& delta)
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{
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m_Pan += (delta / m_Zoom);
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}
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void Camera::Zoom(float delta)
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{
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constexpr float ZOOM_SCALE = 0.1f;
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m_Zoom += delta * ZOOM_SCALE;
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LOG_DEBUG("Zoom: ", m_Zoom);
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}
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WindowPos Camera::WorldToWindow(WorldPos world) const
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{
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const auto& v = world + m_Pan;
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return WindowPos{v[0], v[1]} * m_Zoom;
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}
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WorldPos Camera::WindowToWorld(WindowPos window) const
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{
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window /= m_Zoom;
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return WorldPos{window[0], window[1]} - m_Pan;
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}
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WindowSize Camera::WorldToWindowSize(WorldSize world) const
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{
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const auto& v = world;
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// no zoom yet, just pass-through
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return WindowSize{v[0], v[1]} * m_Zoom;
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}
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WorldSize Camera::WindowToWorldSize(WindowSize window) const
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{
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window /= m_Zoom;
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return WorldSize{window[0], window[1]};
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}
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