h4570
71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
/*
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# ______ ____ ___
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# | \/ ____| |___|
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# | | | \ | |
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#-----------------------------------------------------------------------
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# Copyright 2020, tyra - https://github.com/h4570/tyra
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# Licenced under Apache License 2.0
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# Sandro Sobczyński <sandro.sobczynski@gmail.com>
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*/
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#include "camera.hpp"
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#include <utils/debug.hpp>
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#include <fastmath.h>
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const float CAMERA_Y = 30.0F;
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// ----
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// Constructors/Destructors
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// ----
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Camera::Camera(ScreenSettings *t_screen) : CameraBase(t_screen, &position, &up)
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{
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PRINT_LOG("Initializing camera");
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verticalLevel = 80.0F;
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up.x = 0.0F;
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up.y = 1.0F;
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up.z = 0.0F;
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PRINT_LOG("Camera initialized!");
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}
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Camera::~Camera() {}
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// ----
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// Methods
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// ----
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void Camera::update(Pad &t_pad, Mesh &t_mesh)
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{
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rotate(t_pad);
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followBy(t_mesh);
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lookAt(t_mesh.position);
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}
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/** Set camera rotation by pad right joy and update unit circle
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* https://en.wikipedia.org/wiki/Unit_circle
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* https://www.desmos.com/calculator/3e7iypw4ow
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*/
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void Camera::rotate(Pad &t_pad)
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{
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if (t_pad.rJoyH <= 100)
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horizontalLevel -= 0.08;
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else if (t_pad.rJoyH >= 200)
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horizontalLevel += 0.08;
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if (t_pad.rJoyV <= 50 && verticalLevel > 25.0F)
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verticalLevel -= 0.9F;
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else if (t_pad.rJoyV >= 200 && verticalLevel < 80.0F)
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verticalLevel += 0.9F;
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unitCirclePosition.x = (sin(horizontalLevel) * verticalLevel);
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unitCirclePosition.y = CAMERA_Y;
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unitCirclePosition.z = (cos(horizontalLevel) * verticalLevel);
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}
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/** Rotate camera around 3D object */
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void Camera::followBy(Mesh &t_mesh)
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{
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position.x = unitCirclePosition.x + t_mesh.position.x;
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position.y = unitCirclePosition.y + t_mesh.position.y;
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position.z = unitCirclePosition.z + t_mesh.position.z;
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}
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