567 lines
21 KiB
C++
567 lines
21 KiB
C++
#include <map>
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#include <iostream>
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#include <vector>
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#include <chrono>
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#include <thread>
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#include <atomic>
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#include <mutex>
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#include <cmath>
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#include <random>
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#include "../util/grid/grid3eigen.hpp"
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#include "../util/output/bmpwriter.hpp"
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#include "../util/output/frame.hpp"
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#include "../util/timing_decorator.cpp"
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#include "../util/noise/pnoise2.hpp"
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#include "../util/output/aviwriter.hpp"
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#include "../imgui/imgui.h"
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#include "../imgui/backends/imgui_impl_glfw.h"
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#include "../imgui/backends/imgui_impl_opengl3.h"
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#include <GLFW/glfw3.h>
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#include "../stb/stb_image.h"
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struct defaults {
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int outWidth = 512;
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int outHeight = 512;
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int gridSizecube = 512;
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PNoise2 noise = PNoise2(42);
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};
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struct spheredefaults {
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float centerX = 0.0f;
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float centerY = 0.0f;
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float centerZ = 0.0f;
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float radius = 128.0f;
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float color[3] = {0.0f, 1.0f, 0.0f};
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bool light = false;
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float emittance = 0.0f;
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float reflection = 0.0f;
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float refraction = 0.0f;
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bool fillInside = true;
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float voxelSize = 10.0f;
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};
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struct ceilingdefaults {
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float minX = 0.0f;
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float maxX = 512.0f;
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float minZ = 0.0f;
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float maxZ = 512.0f;
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float yLevel = 450.0f; // Near the top
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float spacing = 10.0f; // Distance between light points
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float color[3] = {1.0f, 1.0f, 1.0f}; // White light
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float emittance = 5.0f; // Brightness
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float voxelSize = 2.0f;
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bool enabled = true;
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};
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std::mutex PreviewMutex;
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GLuint textu = 0;
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bool textureInitialized = false;
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bool updatePreview = false;
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bool previewRequested = false;
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using PointType = Eigen::Matrix<float, 3, 1>;
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void createSphere(const defaults& config, const spheredefaults& sconfig, Octree<int>& grid) {
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if (!grid.empty()) grid.clear();
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int minX = std::max(0, (int)(sconfig.centerX - sconfig.radius - 1));
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int maxX = std::min(config.gridSizecube, (int)(sconfig.centerX + sconfig.radius + 1));
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int minY = std::max(0, (int)(sconfig.centerY - sconfig.radius - 1));
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int maxY = std::min(config.gridSizecube, (int)(sconfig.centerY + sconfig.radius + 1));
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int minZ = std::max(0, (int)(sconfig.centerZ - sconfig.radius - 1));
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int maxZ = std::min(config.gridSizecube, (int)(sconfig.centerZ + sconfig.radius + 1));
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float radSq = sconfig.radius * sconfig.radius;
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float innerRadSq = 0.0f;
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if (!sconfig.fillInside) {
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float innerR = std::max(0.0f, sconfig.radius - 2.0f);
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innerRadSq = innerR * innerR;
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}
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Eigen::Vector3f colorVec(sconfig.color[0], sconfig.color[1], sconfig.color[2]);
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for (int x = minX; x < maxX; ++x) {
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for (int y = minY; y < maxY; ++y) {
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for (int z = minZ; z < maxZ; ++z) {
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float dx = x - sconfig.centerX;
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float dy = y - sconfig.centerY;
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float dz = z - sconfig.centerZ;
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float distSq = dx*dx + dy*dy + dz*dz;
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bool solid = distSq <= radSq;
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if (solid) {
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if (!(sconfig.fillInside) && distSq < innerRadSq) {
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continue;
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}
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PointType pos((float)x, (float)y, (float)z);
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grid.set(1,pos, true, colorVec, sconfig.voxelSize, true, sconfig.light, sconfig.emittance, sconfig.refraction, sconfig.reflection);
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}
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}
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}
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}
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}
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void addCeilingLight(const defaults& config, const ceilingdefaults& ceilingconf, Octree<int>& grid) {
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if (!ceilingconf.enabled) return;
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Eigen::Vector3f colorVec(ceilingconf.color[0], ceilingconf.color[1], ceilingconf.color[2]);
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// Iterate over X and Z within bounds, stepping by 'spacing'
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for (float x = ceilingconf.minX; x <= ceilingconf.maxX; x += ceilingconf.spacing) {
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for (float z = ceilingconf.minZ; z <= ceilingconf.maxZ; z += ceilingconf.spacing) {
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PointType pos(x, ceilingconf.yLevel, z);
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grid.set(2, pos, true, colorVec, ceilingconf.voxelSize, true, true, ceilingconf.emittance, 0.0f, 0.0f);
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}
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}
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grid.printStats();
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}
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void livePreview(Octree<int>& grid, defaults& config, const Camera& cam) {
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std::lock_guard<std::mutex> lock(PreviewMutex);
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updatePreview = true;
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frame currentPreviewFrame = grid.renderFrame(cam, config.outWidth, config.outHeight, frame::colormap::RGB);
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glGenTextures(1, &textu);
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glBindTexture(GL_TEXTURE_2D, textu);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
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glBindTexture(GL_TEXTURE_2D, textu);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, currentPreviewFrame.getWidth(), currentPreviewFrame.getHeight(),
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0, GL_RGB, GL_UNSIGNED_BYTE, currentPreviewFrame.getData().data());
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//BMPWriter::saveBMP("output/frameoutput.bmp", currentPreviewFrame);
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updatePreview = false;
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textureInitialized = true;
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}
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void resetView(Camera& cam, float gridSize) {
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cam.origin = Vector3f(gridSize * 1.5f, gridSize * 1.5f, gridSize * 1.5f);
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Vector3f center(gridSize / 2.0f, gridSize / 2.0f, gridSize / 2.0f);
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cam.lookAt(center);
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}
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static void glfw_error_callback(int error, const char* description)
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{
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fprintf(stderr, "GLFW Error %d: %s\n", error, description);
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}
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int main() {
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glfwSetErrorCallback(glfw_error_callback);
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if (!glfwInit()) {
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std::cerr << "gui stuff is dumb in c++." << std::endl;
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glfwTerminate();
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return 1;
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}
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// COPIED VERBATIM FROM IMGUI.
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#if defined(IMGUI_IMPL_OPENGL_ES2)
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// GL ES 2.0 + GLSL 100 (WebGL 1.0)
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const char* glsl_version = "#version 100";
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
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glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
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#elif defined(IMGUI_IMPL_OPENGL_ES3)
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// GL ES 3.0 + GLSL 300 es (WebGL 2.0)
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const char* glsl_version = "#version 300 es";
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
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glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
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#elif defined(__APPLE__)
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// GL 3.2 + GLSL 150
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const char* glsl_version = "#version 150";
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); // 3.2+ only
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glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // Required on Mac
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#else
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// GL 3.0 + GLSL 130
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const char* glsl_version = "#version 130";
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
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//glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); // 3.2+ only
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//glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // 3.0+ only
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#endif
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bool application_not_closed = true;
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GLFWwindow* window = glfwCreateWindow((int)(1280), (int)(800), "voxelgrid live renderer", nullptr, nullptr);
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if (window == nullptr) {
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glfwTerminate();
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return 1;
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}
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glfwMakeContextCurrent(window);
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glfwSwapInterval(1);
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IMGUI_CHECKVERSION();
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ImGui::CreateContext();
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ImGuiIO& io = ImGui::GetIO();
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(void)io;
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io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
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ImGui::StyleColorsDark();
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ImGuiStyle& style = ImGui::GetStyle();
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ImGui_ImplGlfw_InitForOpenGL(window, true);
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#ifdef __EMSCRIPTEN__
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ImGui_ImplGlfw_InstallEmscriptenCallbacks(window, "#canvas");
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#endif
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ImGui_ImplOpenGL3_Init(glsl_version);
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bool show_demo_window = true;
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bool show_another_window = false;
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ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
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defaults config;
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PointType minBound(-config.gridSizecube, -config.gridSizecube, -config.gridSizecube);
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PointType maxBound(config.gridSizecube, config.gridSizecube, config.gridSizecube);
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Octree<int> grid(minBound, maxBound, 16, 16);
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bool gridInitialized = false;
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float ghalf = config.gridSizecube / 2.f;
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Camera cam(PointType(ghalf, ghalf, ghalf), PointType(0,0,1), PointType(0,1,0), 80);
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spheredefaults sphereConf;
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ceilingdefaults ceilingConf;
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bool autoRotate = false;
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bool autoRotateView = false;
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float rotationSpeedX = 0.1f;
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float rotationSpeedY = 0.07f;
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float rotationSpeedZ = 0.05f;
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float autoRotationTime = 0.0f;
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PointType initialViewDir(0, 0, 1);
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float rotationRadius = 255.0f;
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float yawSpeed = 0.5f;
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float pitchSpeed = 0.3f;
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float rollSpeed = 0.2f;
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float autoRotationAngle = 0.0f;
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PointType initialUpDir(0, 1, 0);
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float camX = 0.0f;
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float camY = 0.0f;
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float camZ = 0.0f;
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float camvX = 0.f;
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float camvY = 0.f;
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float camvZ = 0.f;
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float camspeed = 50;
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// Keyboard state tracking
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std::map<int, bool> keyStates;
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bool mouseCaptured = false;
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double lastMouseX = 0, lastMouseY = 0;
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float deltaTime = 0.016f;
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while (!glfwWindowShouldClose(window)) {
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double currentTime = glfwGetTime();
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static double lastFrameTime = currentTime;
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deltaTime = currentTime - lastFrameTime;
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lastFrameTime = currentTime;
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glfwPollEvents();
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for (int i = GLFW_KEY_SPACE; i <= GLFW_KEY_LAST; i++) {
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keyStates[i] = (glfwGetKey(window, i) == GLFW_PRESS);
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}
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// Camera movement - WASD + QE + ZX
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float actualMoveSpeed = deltaTime;
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float actualRotateSpeed = deltaTime;
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if (keyStates[GLFW_KEY_W]) {
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cam.moveForward(actualMoveSpeed);
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previewRequested = true;
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}
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if (keyStates[GLFW_KEY_S]) {
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cam.moveBackward(actualMoveSpeed);
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previewRequested = true;
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}
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if (keyStates[GLFW_KEY_A]) {
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cam.moveLeft(actualMoveSpeed);
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previewRequested = true;
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}
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if (keyStates[GLFW_KEY_D]) {
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cam.moveRight(actualMoveSpeed);
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previewRequested = true;
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}
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if (keyStates[GLFW_KEY_Z]) {
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cam.moveUp(actualMoveSpeed);
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previewRequested = true;
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}
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if (keyStates[GLFW_KEY_X]) {
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cam.moveDown(actualMoveSpeed);
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previewRequested = true;
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}
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if (keyStates[GLFW_KEY_Q]) {
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cam.rotateYaw(actualRotateSpeed);
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previewRequested = true;
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}
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if (keyStates[GLFW_KEY_R]) {
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cam.rotateYaw(-actualRotateSpeed);
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previewRequested = true;
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}
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// Update camera position and view direction variables for UI
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camX = cam.origin[0];
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camY = cam.origin[1];
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camZ = cam.origin[2];
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camvX = cam.direction[0];
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camvY = cam.direction[1];
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camvZ = cam.direction[2];
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camspeed = cam.movementSpeed;
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// Start the Dear ImGui frame
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ImGui_ImplOpenGL3_NewFrame();
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ImGui_ImplGlfw_NewFrame();
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ImGui::NewFrame();
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{
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ImGui::Begin("Controls");
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ImGui::Text("Sphere Parameters");
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float pos[3] = { sphereConf.centerX, sphereConf.centerY, sphereConf.centerZ };
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if (ImGui::DragFloat3("Center (X,Y,Z)", pos, 1.0f, 0.0f, (float)config.gridSizecube)) {
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sphereConf.centerX = pos[0];
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sphereConf.centerY = pos[1];
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sphereConf.centerZ = pos[2];
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}
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ImGui::DragFloat("Radius", &sphereConf.radius, 0.5f, 1.0f, 250.0f);
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ImGui::ColorEdit3("Color", sphereConf.color);
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ImGui::DragFloat("Voxel Size", &sphereConf.voxelSize, 0.1f, 0.1f, 5.0f);
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ImGui::Separator();
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ImGui::Checkbox("Is Light", &sphereConf.light);
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if(sphereConf.light) {
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ImGui::DragFloat("Emittance", &sphereConf.emittance, 0.1f, 0.0f, 100.0f);
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}
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ImGui::SliderFloat("Reflection", &sphereConf.reflection, 0.0f, 1.0f);
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ImGui::SliderFloat("Refraction", &sphereConf.refraction, 0.0f, 1.0f);
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ImGui::Checkbox("Fill Inside", &sphereConf.fillInside);
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if (ImGui::CollapsingHeader("Ceiling Light Parameters", ImGuiTreeNodeFlags_DefaultOpen)) {
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ImGui::Checkbox("Enable Ceiling Light", &ceilingConf.enabled);
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ImGui::DragFloat("Height (Y)", &ceilingConf.yLevel, 1.0f, 0.0f, (float)config.gridSizecube);
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ImGui::DragFloat("Spacing", &ceilingConf.spacing, 0.5f, 1.0f, 100.0f);
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ImGui::DragFloat("Light Emittance", &ceilingConf.emittance, 0.1f, 0.0f, 100.0f);
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ImGui::ColorEdit3("Light Color", ceilingConf.color);
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ImGui::DragFloat("Light Voxel Size", &ceilingConf.voxelSize, 0.1f, 0.1f, 10.0f);
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}
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ImGui::Separator();
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if (ImGui::Button("Create Sphere & Render")) {
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createSphere(config, sphereConf, grid);
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grid.printStats();
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addCeilingLight(config, ceilingConf, grid);
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gridInitialized = true;
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resetView(cam, config.gridSizecube);
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livePreview(grid, config, cam);
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ImGui::Image((void*)(intptr_t)textu, ImVec2(config.outWidth, config.outHeight));
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}
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ImGui::End();
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}
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{
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ImGui::Begin("Preview");
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if (gridInitialized && textureInitialized) {
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ImGui::Image((void*)(intptr_t)textu, ImVec2(config.outWidth, config.outHeight));
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} else if (gridInitialized) {
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ImGui::Text("Preview not generated yet");
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} else {
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ImGui::Text("No grid generated");
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}
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ImGui::End();
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}
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{
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ImGui::Begin("controls");
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ImGui::Separator();
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ImGui::Text("Camera Controls:");
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float maxSliderValueX = config.gridSizecube;
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float maxSliderValueY = config.gridSizecube;
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float maxSliderValueZ = config.gridSizecube;
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float maxSliderValueRotation = 360.0f;
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ImGui::Text("Position (0 to grid size²):");
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if (ImGui::SliderFloat("Camera X", &camX, 0.0f, maxSliderValueX)) {
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cam.origin[0] = camX;
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}
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if (ImGui::SliderFloat("Camera Y", &camY, 0.0f, maxSliderValueY)) {
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cam.origin[1] = camY;
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}
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if (ImGui::SliderFloat("Camera Z", &camZ, 0.0f, maxSliderValueZ)) {
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cam.origin[2] = camZ;
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}
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ImGui::Separator();
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ImGui::Text("View Direction:");
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if (ImGui::SliderFloat("Camera View X", &camvX, -1.0f, 1.0f)) {
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cam.direction[0] = camvX;
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}
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if (ImGui::SliderFloat("Camera View Y", &camvY, -1.0f, 1.0f)) {
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cam.direction[1] = camvY;
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}
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if (ImGui::SliderFloat("Camera View Z", &camvZ, -1.0f, 1.0f)) {
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cam.direction[2] = camvZ;
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}
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if (ImGui::SliderFloat("Camera Speed", &camspeed, 1, 100)) {
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cam.movementSpeed = camspeed;
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}
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ImGui::Separator();
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ImGui::Text("Current Camera Position:");
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ImGui::Text("X: %.2f, Y: %.2f, Z: %.2f",
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cam.origin[0],
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cam.origin[1],
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cam.origin[2]);
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ImGui::Text("Auto-Rotation:");
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// Toggle button for auto-rotation
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if (ImGui::Button(autoRotate ? "Stop Auto-Rotation" : "Start Auto-Rotation")) {
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autoRotate = !autoRotate;
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if (autoRotate) {
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autoRotationTime = 0.0f;
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initialViewDir = PointType(camvX, camvY, camvZ);
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}
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}
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if (ImGui::Button(autoRotateView ? "Stop Looking Around" : "Start Looking Around")) {
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autoRotateView = !autoRotateView;
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if (autoRotateView) {
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autoRotationAngle = 0.0f;
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initialViewDir = PointType(camvX, camvY, camvZ);
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}
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}
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if (autoRotate) {
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ImGui::SameLine();
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ImGui::Text("(Running)");
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// Calculate new view direction using frame-based timing
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float angleX = autoRotationTime * rotationSpeedX;
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float angleY = autoRotationTime * rotationSpeedY;
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float angleZ = autoRotationTime * rotationSpeedZ;
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camvX = sinf(angleX) * cosf(angleY);
|
|
camvY = sinf(angleY) * sinf(angleZ);
|
|
camvZ = cosf(angleX) * cosf(angleZ);
|
|
|
|
// Normalize
|
|
float length = sqrtf(camvX * camvX + camvY * camvY + camvZ * camvZ);
|
|
if (length > 0.001f) {
|
|
camvX /= length;
|
|
camvY /= length;
|
|
camvZ /= length;
|
|
}
|
|
|
|
// Update camera position
|
|
camX = config.gridSizecube / 2.0f + rotationRadius * camvX;
|
|
camY = config.gridSizecube / 2.0f + rotationRadius * camvY;
|
|
camZ = config.gridSizecube / 2.0f + rotationRadius * camvZ;
|
|
|
|
// Update camera
|
|
cam.origin = PointType(camX, camY, camZ);
|
|
cam.direction = PointType(camvX, camvY, camvZ);
|
|
|
|
// Sliders to control rotation speeds
|
|
ImGui::SliderFloat("X Speed", &rotationSpeedX, 0.01f, 1.0f);
|
|
ImGui::SliderFloat("Y Speed", &rotationSpeedY, 0.01f, 1.0f);
|
|
ImGui::SliderFloat("Z Speed", &rotationSpeedZ, 0.01f, 1.0f);
|
|
|
|
// Slider for orbit radius
|
|
ImGui::SliderFloat("Orbit Radius", &rotationRadius, 10.0f, 200.0f);
|
|
}
|
|
|
|
if (autoRotateView) {
|
|
ImGui::SameLine();
|
|
ImGui::TextColored(ImVec4(0, 1, 0, 1), " ACTIVE");
|
|
|
|
// Calculate rotation angles using frame-based timing
|
|
float yaw = autoRotationAngle * yawSpeed * (3.14159f / 180.0f);
|
|
float pitch = sinf(autoRotationAngle * 0.7f) * pitchSpeed * (3.14159f / 180.0f);
|
|
|
|
// Apply rotations
|
|
PointType forward = initialViewDir;
|
|
|
|
// Yaw rotation (around Y axis)
|
|
float cosYaw = cosf(yaw);
|
|
float sinYaw = sinf(yaw);
|
|
PointType tempForward;
|
|
tempForward[0] = forward[0] * cosYaw + forward[2] * sinYaw;
|
|
tempForward[1] = forward[1];
|
|
tempForward[2] = -forward[0] * sinYaw + forward[2] * cosYaw;
|
|
forward = tempForward;
|
|
|
|
// Pitch rotation (around X axis)
|
|
float cosPitch = cosf(pitch);
|
|
float sinPitch = sinf(pitch);
|
|
tempForward[0] = forward[0];
|
|
tempForward[1] = forward[1] * cosPitch - forward[2] * sinPitch;
|
|
tempForward[2] = forward[1] * sinPitch + forward[2] * cosPitch;
|
|
forward = tempForward;
|
|
|
|
// Normalize
|
|
float length = sqrtf(forward[0] * forward[0] + forward[1] * forward[1] + forward[2] * forward[2]);
|
|
if (length > 0.001f) {
|
|
forward[0] /= length;
|
|
forward[1] /= length;
|
|
forward[2] /= length;
|
|
}
|
|
|
|
// Update view direction
|
|
camvX = forward[0];
|
|
camvY = forward[1];
|
|
camvZ = forward[2];
|
|
|
|
// Update camera
|
|
cam.direction = PointType(camvX, camvY, camvZ);
|
|
|
|
// Show current view direction
|
|
ImGui::Text("Current View: (%.3f, %.3f, %.3f)", camvX, camvY, camvZ);
|
|
|
|
// Sliders to control rotation speeds
|
|
ImGui::SliderFloat("Yaw Speed", &yawSpeed, 0.1f, 5.0f, "%.2f deg/sec");
|
|
ImGui::SliderFloat("Pitch Speed", &pitchSpeed, 0.0f, 2.0f, "%.2f deg/sec");
|
|
}
|
|
|
|
ImGui::End();
|
|
}
|
|
|
|
if (gridInitialized) livePreview(grid, config, cam);
|
|
|
|
ImGui::Render();
|
|
int display_w, display_h;
|
|
glfwGetFramebufferSize(window, &display_w, &display_h);
|
|
glViewport(0, 0, display_w, display_h);
|
|
glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
|
|
|
|
glfwSwapBuffers(window);
|
|
}
|
|
|
|
// Cleanup
|
|
ImGui_ImplOpenGL3_Shutdown();
|
|
ImGui_ImplGlfw_Shutdown();
|
|
ImGui::DestroyContext();
|
|
|
|
glfwDestroyWindow(window);
|
|
if (textu != 0) {
|
|
glDeleteTextures(1, &textu);
|
|
textu = 0;
|
|
}
|
|
glfwTerminate();
|
|
|
|
FunctionTimer::printStats(FunctionTimer::Mode::ENHANCED);
|
|
|
|
return 0;
|
|
} |