72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
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#pragma once
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#include <glm/vec2.hpp>
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#include <glm/vec3.hpp>
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#include <glm/mat4x4.hpp>
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/**
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* Default camera values
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*/
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#define DEFAULT_CAMERA_YAW (-90.0f)
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#define DEFAULT_CAMERA_PITCH (0.0f)
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#define DEFAULT_CAMERA_ROLL (0.0f)
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#define DEFAULT_CAMERA_SPEED (1.0f)
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#define DEFAULT_CAMERA_SENSITIVITY (1.0f)
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#define DEFAULT_CAMERA_JOYSENSITIVITY (1.0f)
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#define DEFAULT_CAMERA_ZOOM (45.0f)
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/*
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* Decelerate at gravity speed (9.8 m/s) / ???
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*/
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#define DEFAULT_CAMERA_DECELERATIONSPEED (0.98f)
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#define DEFAULT_CAMERA_MOUSEDECELERATIONSPEED (0.098f)
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class Camera
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{
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/**
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* An abstract camera class that processes input and calculates the corresponding
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*/
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glm::vec3 Position;
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glm::vec3 Front;
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glm::vec3 Right;
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glm::vec3 Up;
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glm::vec3 WorldUp;
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/** Euler Angles, Vectors and Matrices for use in OpenGL. */
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glm::vec3 Angles;
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/* XXX Maybe we shouldn't let the camera move? */
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glm::vec3 Direction; /* Position movement */
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glm::vec2 ViewDirection; /* Yaw, Pitch movement */
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void updateCameraVectors (void);
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public:
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/**
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* Defines several possible options for camera movement.
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* Used as abstraction to stay away from window-system specific input methods
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*/
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enum Movement
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{
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FORWARD, BACKWARD, LEFT, RIGHT, UP, DOWN, CW, CCW, NONE
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};
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/** Camera options */
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float MovementSpeed, MouseSensitivity, Zoom;
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float DecelerationSpeed, ViewDecelerationSpeed, JoystickSensitivity;
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float zNear, zFar;
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Camera (
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const glm::vec3 position = glm::vec3(0.0f, 0.0f, 1.0f)
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, const glm::vec3 up = glm::vec3(0.0f, 1.0f, 0.0f)
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, const float yaw = DEFAULT_CAMERA_YAW
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, const float pitch = DEFAULT_CAMERA_PITCH
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, const float roll = DEFAULT_CAMERA_ROLL);
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glm::mat4 GetViewMatrix (const bool constrainPitch = true);
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void ProcessJoystickMovement (const float xoffset, const float yoffset, const float deltaTime);
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void ProcessKeyboard (const Camera::Movement direction, const float deltaTime);
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void ProcessMouseMovement (const float xoffset, const float yoffset, const float deltaTime);
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void ProcessMouseScroll (const float xoffset, const float yoffset, const float deltaTime);
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};
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