21 lines
920 B
C++
21 lines
920 B
C++
#pragma once
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#include "FluidSim/AudioProcessing.hpp"
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#include <SFML/System/Vector2.hpp>
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#include <algorithm>
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#include <cmath>
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namespace fluidsim::port::desktop {
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struct OrbitCamera {
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Vec3 target{.12f,.25f,0};
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float yaw{-28},pitch{24},distance{2.2f};
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void reset(float aspect) {target={.12f,.25f,0};yaw=-28;pitch=24;distance=std::max(.65f,1.6f/aspect)/.414214f;}
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void orbit(sf::Vector2i delta) {yaw+=delta.x*.35f;pitch=std::clamp(pitch+delta.y*.3f,-75.f,80.f);}
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void pan(sf::Vector2i delta,float height) {
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const float y=yaw*.017453293f,p=pitch*.017453293f,k=distance*.828427f/std::max(height,1.f);
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target.x+=k*(-delta.x*std::cos(y)+delta.y*std::sin(p)*std::sin(y));
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target.y+=k*delta.y*std::cos(p);
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target.z+=k*(-delta.x*std::sin(y)-delta.y*std::sin(p)*std::cos(y));
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}
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void zoom(float delta) {distance=std::clamp(distance*std::exp(-delta*.12f),.35f,12.f);}
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};
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}
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