270 lines
8.2 KiB
C++
270 lines
8.2 KiB
C++
#include "glew.h"
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#include <GLFW/glfw3.h>
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#include "glm.hpp"
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#include "ext.hpp"
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#include <iostream>
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#include <cmath>
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#include "Shader_Loader.h"
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#include "Render_Utils.h"
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//#include "Texture.h"
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#include "Box.cpp"
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#include <assimp/Importer.hpp>
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#include <assimp/scene.h>
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#include <assimp/postprocess.h>
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#include <string>
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namespace texture {
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GLuint earth;
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GLuint clouds;
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GLuint moon;
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GLuint ship;
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GLuint grid;
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GLuint earthNormal;
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GLuint asteroidNormal;
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GLuint shipNormal;
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}
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GLuint program;
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GLuint programSun;
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GLuint programTex;
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Core::Shader_Loader shaderLoader;
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Core::RenderContext shipContext;
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Core::RenderContext sphereContext;
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glm::vec3 cameraPos = glm::vec3(-4.f, 0, 0);
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glm::vec3 cameraDir = glm::vec3(1.f, 0.f, 0.f);
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glm::vec3 spaceshipPos = glm::vec3(-4.f, 0, 0);
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glm::vec3 spaceshipDir = glm::vec3(1.f, 0.f, 0.f);
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GLuint VAO,VBO;
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float aspectRatio = 1.f;
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float exposition = 1.f;
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glm::vec3 lightPos = glm::vec3(0, 0, 0);
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glm::vec3 lightColor = glm::vec3(0.9, 0.7, 0.8)*100;
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glm::vec3 spotlightPos = glm::vec3(0, 0, 0);
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glm::vec3 spotlightConeDir = glm::vec3(0, 0, 0);
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glm::vec3 spotlightColor = glm::vec3(0.5, 0.9, 0.8)*10;
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float spotlightPhi = 3.14 / 3;
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float lastTime = -1.f;
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float deltaTime = 0.f;
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void updateDeltaTime(float time) {
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if (lastTime < 0) {
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lastTime = time;
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return;
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}
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deltaTime = time - lastTime;
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if (deltaTime > 0.1) deltaTime = 0.1;
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lastTime = time;
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}
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glm::mat4 createCameraMatrix()
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{
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glm::vec3 cameraSide = glm::normalize(glm::cross(cameraDir,glm::vec3(0.f,1.f,0.f)));
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glm::vec3 cameraUp = glm::normalize(glm::cross(cameraSide,cameraDir));
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glm::mat4 cameraRotrationMatrix = glm::mat4({
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cameraSide.x,cameraSide.y,cameraSide.z,0,
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cameraUp.x,cameraUp.y,cameraUp.z ,0,
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-cameraDir.x,-cameraDir.y,-cameraDir.z,0,
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0.,0.,0.,1.,
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});
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cameraRotrationMatrix = glm::transpose(cameraRotrationMatrix);
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glm::mat4 cameraMatrix = cameraRotrationMatrix * glm::translate(-cameraPos);
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return cameraMatrix;
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}
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glm::mat4 createPerspectiveMatrix()
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{
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glm::mat4 perspectiveMatrix;
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float n = 0.05;
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float f = 20.;
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float a1 = glm::min(aspectRatio, 1.f);
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float a2 = glm::min(1 / aspectRatio, 1.f);
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perspectiveMatrix = glm::mat4({
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1,0.,0.,0.,
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0.,aspectRatio,0.,0.,
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0.,0.,(f+n) / (n - f),2*f * n / (n - f),
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0.,0.,-1.,0.,
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});
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perspectiveMatrix=glm::transpose(perspectiveMatrix);
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return perspectiveMatrix;
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}
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void drawObjectColor(Core::RenderContext& context, glm::mat4 modelMatrix, glm::vec3 color) {
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glm::mat4 viewProjectionMatrix = createPerspectiveMatrix() * createCameraMatrix();
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glm::mat4 transformation = viewProjectionMatrix * modelMatrix;
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glUniformMatrix4fv(glGetUniformLocation(program, "transformation"), 1, GL_FALSE, (float*)&transformation);
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glUniformMatrix4fv(glGetUniformLocation(program, "modelMatrix"), 1, GL_FALSE, (float*)&modelMatrix);
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glUniform1f(glGetUniformLocation(program, "exposition"), exposition);
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glUniform3f(glGetUniformLocation(program, "color"), color.x, color.y, color.z);
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glUniform3f(glGetUniformLocation(program, "cameraPos"), cameraPos.x, cameraPos.y, cameraPos.z);
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glUniform3f(glGetUniformLocation(program, "lightPos"), lightPos.x, lightPos.y, lightPos.z);
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glUniform3f(glGetUniformLocation(program, "lightColor"), lightColor.x, lightColor.y, lightColor.z);
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glUniform3f(glGetUniformLocation(program, "spotlightConeDir"), spotlightConeDir.x, spotlightConeDir.y, spotlightConeDir.z);
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glUniform3f(glGetUniformLocation(program, "spotlightPos"), spotlightPos.x, spotlightPos.y, spotlightPos.z);
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glUniform3f(glGetUniformLocation(program, "spotlightColor"), spotlightColor.x, spotlightColor.y, spotlightColor.z);
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glUniform1f(glGetUniformLocation(program, "spotlightPhi"), spotlightPhi);
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Core::DrawContext(context);
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}
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void renderScene(GLFWwindow* window)
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{
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glClearColor(0.0f, 0.3f, 0.3f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glm::mat4 transformation;
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float time = glfwGetTime();
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updateDeltaTime(time);
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glUseProgram(programSun);
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transformation = createPerspectiveMatrix() * createCameraMatrix();
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glUniformMatrix4fv(glGetUniformLocation(programSun, "transformation"), 1, GL_FALSE, (float*)&transformation);
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glUniform3f(glGetUniformLocation(programSun, "color"), 0.9,0.8,0.4);
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Core::DrawContext(sphereContext);
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glUseProgram(program);
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drawObjectColor(sphereContext, glm::eulerAngleY(time / 3) * glm::translate(glm::vec3(4.f, 0, 0)) * glm::scale(glm::vec3(0.3f)), glm::vec3(0.2, 0.7, 0.3));
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drawObjectColor(sphereContext,
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glm::eulerAngleY(time / 3) * glm::translate(glm::vec3(4.f, 0, 0)) * glm::eulerAngleY(time) * glm::translate(glm::vec3(1.f, 0, 0)) * glm::scale(glm::vec3(0.1f)),
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glm::vec3(0.5, 0.5, 0.5));
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glm::vec3 spaceshipSide = glm::normalize(glm::cross(spaceshipDir, glm::vec3(0.f, 1.f, 0.f)));
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glm::vec3 spaceshipUp = glm::normalize(glm::cross(spaceshipSide, spaceshipDir));
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glm::mat4 specshipCameraRotrationMatrix = glm::mat4({
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spaceshipSide.x,spaceshipSide.y,spaceshipSide.z,0,
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spaceshipUp.x,spaceshipUp.y,spaceshipUp.z ,0,
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-spaceshipDir.x,-spaceshipDir.y,-spaceshipDir.z,0,
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0.,0.,0.,1.,
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});
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//drawObjectColor(shipContext,
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// glm::translate(cameraPos + 1.5 * cameraDir + cameraUp * -0.5f) * inveseCameraRotrationMatrix * glm::eulerAngleY(glm::pi<float>()),
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// glm::vec3(0.3, 0.3, 0.5)
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// );
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drawObjectColor(shipContext,
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glm::translate(spaceshipPos) * specshipCameraRotrationMatrix * glm::eulerAngleY(glm::pi<float>())*glm::scale(glm::vec3(0.1)),
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glm::vec3(0.3, 0.3, 0.5)
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);
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spotlightPos = spaceshipPos + 0.5 * spaceshipDir;
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spotlightConeDir = spaceshipDir;
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glUseProgram(0);
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glfwSwapBuffers(window);
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}
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void framebuffer_size_callback(GLFWwindow* window, int width, int height)
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{
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aspectRatio = width / float(height);
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glViewport(0, 0, width, height);
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}
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void loadModelToContext(std::string path, Core::RenderContext& context)
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{
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Assimp::Importer import;
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const aiScene* scene = import.ReadFile(path, aiProcess_Triangulate | aiProcess_CalcTangentSpace);
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if (!scene || scene->mFlags & AI_SCENE_FLAGS_INCOMPLETE || !scene->mRootNode)
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{
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std::cout << "ERROR::ASSIMP::" << import.GetErrorString() << std::endl;
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return;
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}
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context.initFromAssimpMesh(scene->mMeshes[0]);
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}
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void init(GLFWwindow* window)
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{
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glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
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glEnable(GL_DEPTH_TEST);
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program = shaderLoader.CreateProgram("shaders/shader_8_1.vert", "shaders/shader_8_1.frag");
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programSun = shaderLoader.CreateProgram("shaders/shader_8_sun.vert", "shaders/shader_8_sun.frag");
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loadModelToContext("./models/sphere.obj", sphereContext);
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loadModelToContext("./models/spaceship.obj", shipContext);
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}
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void shutdown(GLFWwindow* window)
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{
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shaderLoader.DeleteProgram(program);
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}
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//obsluga wejscia
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void processInput(GLFWwindow* window)
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{
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glm::vec3 spaceshipSide = glm::normalize(glm::cross(spaceshipDir, glm::vec3(0.f, 1.f, 0.f)));
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glm::vec3 spaceshipUp = glm::vec3(0.f, 1.f, 0.f);
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float angleSpeed = 0.05f * deltaTime * 60;
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float moveSpeed = 0.05f * deltaTime * 60;
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if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) {
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glfwSetWindowShouldClose(window, true);
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}
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if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
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spaceshipPos += spaceshipDir * moveSpeed;
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if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
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spaceshipPos -= spaceshipDir * moveSpeed;
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if (glfwGetKey(window, GLFW_KEY_X) == GLFW_PRESS)
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spaceshipPos += spaceshipSide * moveSpeed;
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if (glfwGetKey(window, GLFW_KEY_Z) == GLFW_PRESS)
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spaceshipPos -= spaceshipSide * moveSpeed;
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if (glfwGetKey(window, GLFW_KEY_Q) == GLFW_PRESS)
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spaceshipPos += spaceshipUp * moveSpeed;
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if (glfwGetKey(window, GLFW_KEY_E) == GLFW_PRESS)
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spaceshipPos -= spaceshipUp * moveSpeed;
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if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
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spaceshipDir = glm::vec3(glm::eulerAngleY(angleSpeed) * glm::vec4(spaceshipDir, 0));
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if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS)
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spaceshipDir = glm::vec3(glm::eulerAngleY(-angleSpeed) * glm::vec4(spaceshipDir, 0));
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cameraPos = spaceshipPos - 1.5 * spaceshipDir + glm::vec3(0, 1, 0) * 0.5f;
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cameraDir = spaceshipDir;
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if (glfwGetKey(window, GLFW_KEY_1) == GLFW_PRESS)
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exposition -= 0.05;
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if (glfwGetKey(window, GLFW_KEY_2) == GLFW_PRESS)
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exposition += 0.05;
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//cameraDir = glm::normalize(-cameraPos);
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}
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// funkcja jest glowna petla
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void renderLoop(GLFWwindow* window) {
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while (!glfwWindowShouldClose(window))
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{
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processInput(window);
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renderScene(window);
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glfwPollEvents();
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}
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}
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//}
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