106 lines
2.2 KiB
C++
106 lines
2.2 KiB
C++
#include <glad/glad.h>
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#include <GLFW/glfw3.h>
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#include <glm/glm.hpp>
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#include <glm/gtc/matrix_transform.hpp>
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#include <glm/gtc/type_ptr.hpp>
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#include <stb_image.h>
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#include <shader.hpp>
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#include <object.hpp>
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#include <iostream>
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#include <vector>
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using glm::vec2;
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using glm::vec3;
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using glm::mat4;
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const float PI = 3.14159f;
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enum Direction
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{
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FORWARD,
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RIGHT,
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BACKWARD,
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LEFT
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};
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class Camera
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{
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public:
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vec3 position;
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vec3 cameraFront;
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vec3 cameraUp;
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vec3 direction;
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vec3 angles;
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Camera()
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{
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position = vec3(0, 0, 10);
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cameraFront = vec3(0, 0, -1);
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cameraUp = vec3(0, 1, 0);
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angles = vec3(0, -PI / 2, 0);
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updateDirection();
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}
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mat4 viewMatrix()
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{
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return glm::lookAt(position, position + direction, vec3(0, 1, 0));
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}
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void setAngles(vec3 angles)
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{
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angles = angles;
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updateDirection();
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}
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void updateAngles(float deltaX, float deltaY)
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{
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angles.x += deltaX;
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angles.y += deltaY;
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if (angles.x > (PI / 2) - 0.1f) angles.x = (PI / 2) - 0.1f;
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if (angles.x < -(PI / 2) - 0.1f) angles.x = -((PI / 2) - 0.1f);
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updateDirection();
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}
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void updateDirection()
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{
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direction.x = cos(angles.y) * cos(angles.x);
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direction.y = sin(angles.x);
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direction.z = sin(angles.y) * cos(angles.x);
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direction = glm::normalize(direction);
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}
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void setPosition(vec3 p)
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{
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position = p;
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}
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void movePosition(vec3 delta)
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{
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position += delta;
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}
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void movePosition(Direction d, float speed)
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{
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switch (d)
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{
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case static_cast<int>(FORWARD):
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movePosition(speed * direction);
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break;
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case static_cast<int>(BACKWARD):
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movePosition(-speed * direction);
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break;
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case static_cast<int>(RIGHT):
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movePosition(speed * glm::normalize(glm::cross(direction, cameraUp)));
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break;
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case static_cast<int>(LEFT):
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movePosition(-speed * glm::normalize(glm::cross(direction, cameraUp)));
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break;
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}
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}
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};
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