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lighting and imgui

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onTheZero
2024-10-12 19:46:28 -04:00
parent da7432d9f9
commit 237272c17b
14 changed files with 587 additions and 93 deletions
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199
main.cpp
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@@ -1,40 +1,49 @@
#include <iostream>
#include <fstream>
#include <glad/glad.h>
#include <GLFW/glfw3.h>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
#include <shader.h>
#include <iostream>
#include <fstream>
#include <imgui.h>
#include <imgui_impl_glfw.h>
#include <imgui_impl_opengl3.h>
#include <camera.h>
#include <cubeFactory.h>
void framebuffer_size_callback(GLFWwindow* window, int width, int height);
void processInput(GLFWwindow* window);
void mouse_callback(GLFWwindow* window, double xpos, double ypos);
void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
int SCR_WIDTH = 800;
int SCR_HEIGHT = 800;
float triangleVertices[] = {
-0.5f,-0.5f,0.0f, 1.0f,0.0f,0.0f,
0.5f,-0.5f,0.0f, 0.0f,1.0f,0.0f,
0.0f, 0.5f,0.0f, 0.0f,0.0f,1.0f
};
Camera camera(glm::vec3(0.0f, 0.0f, 20.0f));
float lastX = SCR_WIDTH / 2.0f;
float lastY = SCR_HEIGHT / 2.0f;
bool firstMouse = true;
float squareVertices[] = {
-0.8f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f,
-0.8f, 0.8f, 0.0f, 1.0f, 0.0f, 0.0f,
-1.0f, 0.8f, 0.0f, 0.0f, 1.0f, 0.0f,
-1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f
};
float deltaTime = 0.0f;
float lastFrame = 0.0f;
float elapsedTime = 0.0f;
unsigned int indices[] = {
0,1,3,
1,2,3
};
//glm::vec3 lightPos(1.2f, 1.0f, 2.0f);
int main() {
int main()
{
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO();
io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;
io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;
std::cout << "Starting GLFW context, OpenGL 3.3" << std::endl;
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
@@ -46,106 +55,128 @@ int main() {
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
glfwSetCursorPosCallback(window, mouse_callback);
glfwSetScrollCallback(window, scroll_callback);
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
std::cout << "Failed to initialize GLAD" << std::endl;
return -1;
}
Shader ourShader("vertex.vert", "fragment.frag");
glEnable(GL_DEPTH_TEST);
glViewport(0, 0, SCR_WIDTH, SCR_HEIGHT);
std::cout << "Loaded GLFW context, OpenGL 3.3" << std::endl;
unsigned int VAO_1, VAO_2, VBO_1, VBO_2, EBO;
glGenVertexArrays(1, &VAO_1);
glGenVertexArrays(1, &VAO_2);
glGenBuffers(1, &VBO_1);
glGenBuffers(1, &VBO_2);
glGenBuffers(1, &EBO);
CubeFactory cubeFactory;
glBindVertexArray(VAO_1);
float offset = 2.0f;
int xAmount = 10;
int yAmount = 10;
int zAmount = 10;
glBindBuffer(GL_ARRAY_BUFFER, VBO_1);
glBufferData(GL_ARRAY_BUFFER, sizeof(triangleVertices), triangleVertices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0);
glEnableVertexAttribArray(0);
for (int x = 0; x < xAmount; x++)
{
for (int y = 0; y < yAmount; y++)
{
for (int z = 0; z < zAmount; z++)
{
glm::vec3 position = glm::vec3( (x * offset) - (xAmount * offset / 2.0f),
(y * offset) - (yAmount * offset / 2.0f),
(z * offset) - (zAmount * offset / 2.0f));
glm::vec3 scale = glm::vec3(1.0f, 1.0f, 1.0f);
glm::vec3 rotation = glm::vec3(0.0f, 0.0f, 0.0f);
glm::vec3 color = glm::vec3(x/10.0f, y/10.0f, z/10.0f);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3 * sizeof(float)));
glEnableVertexAttribArray(1);
cubeFactory.addCube(position, scale, rotation, color);
}
}
}
glBindVertexArray(VAO_2);
glBindBuffer(GL_ARRAY_BUFFER, VBO_2);
glBufferData(GL_ARRAY_BUFFER, sizeof(squareVertices), squareVertices, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0);
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3 * sizeof(float)));
glEnableVertexAttribArray(1);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
//std::cout << "Amount of cubes: " << cubeFactory.getCubes().size() << std::endl;
float r = 0.0f, g = 0.0f, b = 0.0f;
float r = 0.05f, g = 0.05f, b = 0.05f;
while (!glfwWindowShouldClose(window)) {
//timing
float currentFrame = glfwGetTime();
deltaTime = currentFrame - lastFrame;
lastFrame = currentFrame;
elapsedTime += deltaTime;
//input
processInput(window);
//rendering
if (r < 1) {
r = r + 0.01f;
}
else if (g < 1) {
g = g + 0.01f;
}
else if (b < 1) {
b = b + 0.01f;
}
else {
r = 0;
g = 0;
b = 0;
}
glClearColor(r, g, b, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//transforms
glm::mat4 defaultTransform = glm::mat4(1.0f);
glm::mat4 rotatedTransform = glm::rotate(defaultTransform, (float)glfwGetTime(), glm::vec3(0.0f, 0.0f, 1.0f));
// view/projection transformations
glm::mat4 projection = glm::perspective(glm::radians(camera.Zoom), (float)SCR_WIDTH / (float)SCR_HEIGHT, 0.1f, 100.0f);
glm::mat4 view = camera.GetViewMatrix();
//draw
ourShader.use();
unsigned int transformLoc = glGetUniformLocation(ourShader.ID, "transform");
glUniformMatrix4fv(transformLoc, 1, GL_FALSE, glm::value_ptr(rotatedTransform));
glBindVertexArray(VAO_1);
glDrawArrays(GL_TRIANGLES, 0, 3);
glm::vec3 lightPos = glm::vec3(100.2f, 100.0f, 200.0f);
glUniformMatrix4fv(transformLoc, 1, GL_FALSE, glm::value_ptr(defaultTransform));
glBindVertexArray(VAO_2);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
cubeFactory.render(view, projection, lightPos, deltaTime);
//check and call
glfwSwapBuffers(window);
glfwPollEvents();
}
//cubeFactory.clear();
glfwTerminate();
return 0;
}
void framebuffer_size_callback(GLFWwindow* window, int width, int height) {
void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
glViewport(0, 0, width, height);
}
void processInput(GLFWwindow* window) {
void processInput(GLFWwindow* window)
{
if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) {
glfwSetWindowShouldClose(window, true);
}
}
const float cameraSpeed = 5.0f * deltaTime;
if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
camera.ProcessKeyboard(FORWARD, deltaTime);
if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
camera.ProcessKeyboard(BACKWARD, deltaTime);
if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
camera.ProcessKeyboard(LEFT, deltaTime);
if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS)
camera.ProcessKeyboard(RIGHT, deltaTime);
}
void mouse_callback(GLFWwindow* window, double xposIn, double yposIn)
{
//std::cout << "Mouse callback" << std::endl;
float xpos = static_cast<float>(xposIn);
float ypos = static_cast<float>(yposIn);
if (firstMouse)
{
lastX = xpos;
lastY = ypos;
firstMouse = false;
}
float xoffset = xpos - lastX;
float yoffset = lastY - ypos;
lastX = xpos;
lastY = ypos;
camera.ProcessMouseMovement(xoffset, yoffset);
}
void scroll_callback(GLFWwindow* window, double xoffset, double yoffset)
{
camera.ProcessMouseScroll(static_cast<float>(yoffset));
}