103 lines
2.8 KiB
C++
103 lines
2.8 KiB
C++
#ifndef CAMERA_H
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#define CAMERA_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 <iostream>
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class Camera
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{
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public:
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Camera(){
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view = glm::mat4(1.0f);
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// note that we're translating the scene in the reverse direction of where we want to move
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projection = glm::perspective(glm::radians(45.0f), 800.0f / 600.0f, 0.1f, 100.0f);
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}
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void update(GLFWwindow *window, float deltaTime)
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{
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const float cameraSpeed = 2.5f * deltaTime; // adjust accordingly
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if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
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this->cameraPos += cameraSpeed * cameraFront;
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if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
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this->cameraPos -= cameraSpeed * cameraFront;
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if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
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this->cameraPos -= glm::normalize(glm::cross(cameraFront, cameraUp)) * cameraSpeed;
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if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS)
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this->cameraPos += glm::normalize(glm::cross(cameraFront, cameraUp)) * cameraSpeed;
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if (glfwGetKey(window, GLFW_KEY_Q) == GLFW_PRESS)
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this->cameraPos += cameraSpeed * cameraUp;
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if (glfwGetKey(window, GLFW_KEY_Z) == GLFW_PRESS)
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this->cameraPos -= cameraSpeed * cameraUp;
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direction.x = cos(glm::radians(yaw)) * cos(glm::radians(pitch));
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direction.y = sin(glm::radians(pitch));
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direction.z = sin(glm::radians(yaw)) * cos(glm::radians(pitch));
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cameraFront = glm::normalize(direction);
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view = glm::lookAt(cameraPos, cameraPos - cameraFront, cameraUp);
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}
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void mouseCallback(GLFWwindow *window, double xpos, double ypos)
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{
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float xoffset = xpos - lastX;
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float yoffset = lastY - ypos; // reversed since y-coordinates range from bottom to top
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lastX = xpos;
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lastY = ypos;
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const float sensitivity = 0.1f;
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xoffset *= sensitivity;
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yoffset *= sensitivity;
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yaw += xoffset;
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pitch += yoffset;
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if (pitch > 89.0f)
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pitch = 89.0f;
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if (pitch < -89.0f)
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pitch = -89.0f;
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}
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glm::vec3 getPos()
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{
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return cameraPos;
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}
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glm::vec3 getFront()
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{
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return cameraFront;
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}
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glm::vec3 getUp()
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{
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return cameraUp;
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}
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glm::mat4 getView(){
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return view;
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}
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glm::mat4 getProjection(){
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return projection;
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}
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private:
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glm::vec3 cameraPos = glm::vec3(10.0f, 0.0f, 0.0f);
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glm::vec3 cameraFront = glm::vec3(0.0f, 0.0f, 1.0f);
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glm::vec3 cameraUp = glm::vec3(0.0f, 1.0f, 0.0f);
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glm::vec3 direction = glm::vec3(0.0f, 0.0f, 1.0f);
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glm::mat4 view, projection;
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float lastX = 400, lastY = 300;
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float yaw = 0, pitch = 45;
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};
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#endif |