Ano-sys
72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
// Camera.hpp
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#pragma once
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#include <glm/glm.hpp>
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#include <glm/gtc/matrix_transform.hpp>
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namespace vapp{
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enum Camera_Movement{
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FORWARD,
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BACKWARD,
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LEFT,
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RIGHT,
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UP,
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DOWN,
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};
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class Camera{
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public:
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float Yaw = -90.0f, Pitch = 0.0f;
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float MovementSpeed = 2.5f;
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float MouseSensitivity = 0.1f;
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float Zoom = 45.0f;
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glm::vec3 Position, Front, Up, Right, WorldUp;
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Camera(glm::vec3 pos = {0, 0, 3}, glm::vec3 up = {0, 1, 0})
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: Position(pos), WorldUp(up), Front({0, 0, -1}){ updateCameraVectors(); }
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glm::mat4 GetViewMatrix(){
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return glm::lookAt(Position, Position + Front, Up);
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}
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void ProcessKeyboard(Camera_Movement dir, float dt){
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float v = MovementSpeed * dt;
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if(dir == FORWARD) Position += Front * v;
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if(dir == BACKWARD) Position -= Front * v;
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if(dir == LEFT) Position -= Right * v;
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if(dir == RIGHT) Position += Right * v;
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if(dir == UP) Position += Up * v;
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if(dir == DOWN) Position -= Up * v;
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}
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void ProcessMouseMovement(float xoff, float yoff, bool constrainPitch = true){
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xoff *= MouseSensitivity;
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yoff *= MouseSensitivity;
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Yaw += xoff;
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Pitch += yoff;
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if(constrainPitch){
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if(Pitch > 89.0f) Pitch = 89.0f;
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if(Pitch < -89.0f) Pitch = -89.0f;
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}
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updateCameraVectors();
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}
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void ProcessMouseScroll(float yoff){
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Zoom -= yoff;
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if(Zoom < 1.0f) Zoom = 1.0f;
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if(Zoom > 45.0f) Zoom = 45.0f;
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}
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private:
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void updateCameraVectors(){
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glm::vec3 f;
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f.x = cos(glm::radians(Yaw)) * cos(glm::radians(Pitch));
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f.y = sin(glm::radians(Pitch));
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f.z = sin(glm::radians(Yaw)) * cos(glm::radians(Pitch));
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Front = glm::normalize(f);
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Right = glm::normalize(glm::cross(Front, WorldUp));
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Up = glm::normalize(glm::cross(Right, Front));
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}
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};
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}
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