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a06c86942855001c6138bf7f2f75d3f71a011413
stupidsimcpp/tests/g2temp.cpp

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C++
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#include <iostream>
#include <vector>
#include <random>
#include <algorithm>
#include <cmath>
#include <tuple>
#include <unordered_set>
#include "../util/grid/grid2.hpp"
#include "../util/output/aviwriter.hpp"
#include "../util/output/bmpwriter.hpp"
#include "../util/timing_decorator.cpp"
#include "../imgui/imgui.h"
#include "../imgui/backends/imgui_impl_glfw.h"
#include "../imgui/backends/imgui_impl_opengl3.h"
#include <GLFW/glfw3.h>
#include "../stb/stb_image.h"
#include <thread>
#include <atomic>
#include <future>
#include <mutex>
#include <chrono>
#ifndef M_PI
#define M_PI = 3.1415
#endif
std::mutex m;
std::atomic<int> isGenerating{0};
std::future<void> generationFuture;
std::mutex previewMutex;
std::atomic<bool> updatePreview{false};
frame currentPreviewFrame;
GLuint textu = 0;
std::string previewText;
struct Shared {
std::mutex mutex;
Grid2 grid;
bool hasNewFrame = false;
int currentFrame = 0;
};
struct AnimationConfig {
int width = 1024;
int height = 1024;
int totalFrames = 480;
float fps = 30.0f;
int numSeeds = 8;
int noisemod = 42;
};
Grid2 setup(AnimationConfig config) {
TIME_FUNCTION;
Grid2 grid;
std::vector<Vec2> pos;
std::vector<Vec4> colors;
std::vector<float> sizes;
for (int y = 0; y < config.height - 1; ++y) {
for (int x = 0; x < config.width - 1; ++x) {
float gradient = (x + y) / float(config.width + config.height - 2);
pos.push_back(Vec2(x,y));
colors.push_back(Vec4(gradient, gradient, gradient, 1.0f));
sizes.push_back(1.0f);
}
}
grid.bulkAddObjects(pos,colors,sizes);
return grid;
}
void Preview(Grid2& grid) {
TIME_FUNCTION;
int width;
int height;
//std::vector<uint8_t> rgbData;
frame rgbData = grid.getGridAsFrame(frame::colormap::RGB);
std::cout << "Frame looks like: " << rgbData << std::endl;
bool success = BMPWriter::saveBMP("output/grayscalesource.bmp", rgbData);
if (!success) {
std::cout << "yo! this failed in Preview" << std::endl;
}
}
void livePreview(Grid2& grid, AnimationConfig config) {
std::lock_guard<std::mutex> lock(previewMutex);
currentPreviewFrame = grid.getTempAsFrame(Vec2(0,0), Vec2(config.height,config.width), Vec2(256,256));
// Vec2 min;
// Vec2 max;
// grid.getBoundingBox(min, max);
//currentPreviewFrame = grid.getTempAsFrame(min,max, Vec2(1024,1024));
glGenTextures(1, &textu);
glBindTexture(GL_TEXTURE_2D, textu);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glBindTexture(GL_TEXTURE_2D, textu);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, currentPreviewFrame.getWidth(), currentPreviewFrame.getHeight(),
0, GL_RGBA, GL_UNSIGNED_BYTE, currentPreviewFrame.getData().data());
updatePreview = true;
}
std::vector<std::tuple<size_t, Vec2, Vec4>> pickSeeds(Grid2 grid, AnimationConfig config) {
TIME_FUNCTION;
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<> xDist(0, config.width - 1);
std::uniform_int_distribution<> yDist(0, config.height - 1);
std::uniform_real_distribution<> colorDist(0.2f, 0.8f);
std::vector<std::tuple<size_t, Vec2, Vec4>> seeds;
for (int i = 0; i < config.numSeeds; ++i) {
Vec2 point(xDist(gen), yDist(gen));
Vec4 color(colorDist(gen), colorDist(gen), colorDist(gen), 255);
size_t id = grid.getOrCreatePositionVec(point, 0.0, true);
grid.setColor(id, color);
seeds.push_back(std::make_tuple(id,point, color));
}
return seeds;
}
void pickTempSeeds(Grid2& grid, AnimationConfig config) {
std::cout << "pickTempSeeds()" << std::endl;
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<> xDist(0, config.width - 1);
std::uniform_int_distribution<> yDist(0, config.height - 1);
std::uniform_real_distribution<> temp(0.0f, 100.0f);
for (int i = 0; i < config.numSeeds * 100; ++i){
grid.setTemp(Vec2(xDist(gen),yDist(gen)).floor(), temp(gen));
}
}
void expandPixel(Grid2& grid, AnimationConfig config, std::vector<std::tuple<size_t, Vec2, Vec4>>& seeds) {
TIME_FUNCTION;
std::vector<std::tuple<size_t, Vec2, Vec4>> newseeds;
std::unordered_set<size_t> visitedThisFrame;
for (const auto& seed : seeds) {
visitedThisFrame.insert(std::get<0>(seed));
}
//#pragma omp parallel for
for (const std::tuple<size_t, Vec2, Vec4>& seed : seeds) {
size_t id = std::get<0>(seed);
Vec2 seedPOS = std::get<1>(seed);
Vec4 seedColor = std::get<2>(seed);
std::vector<size_t> neighbors = grid.getNeighbors(id);
//grid.setSize(id, grid.getSize(id)+4);
for (size_t neighbor : neighbors) {
if (visitedThisFrame.count(neighbor)) {
continue;
}
visitedThisFrame.insert(neighbor);
Vec2 neipos = grid.getPositionID(neighbor);
Vec4 neighborColor = grid.getColor(neighbor);
float distance = seedPOS.distance(neipos);
float angle = seedPOS.directionTo(neipos);
float normalizedAngle = (angle + M_PI) / (2.0f * M_PI);
float blendFactor = 0.3f + 0.4f * std::sin(normalizedAngle * 2.0f * M_PI);
blendFactor = std::clamp(blendFactor, 0.1f, 0.9f);
Vec4 newcolor = Vec4(
seedColor.r * blendFactor + neighborColor.r * (1.0f - blendFactor),
seedColor.g * (1.0f - blendFactor) + neighborColor.g * blendFactor,
seedColor.b * (0.5f + 0.5f * std::sin(normalizedAngle * 4.0f * M_PI)),
1.0f
);
newcolor = newcolor.clamp(0.0f, 1.0f);
grid.setColor(neighbor, newcolor);
newseeds.emplace_back(neighbor, neipos, newcolor);
}
}
seeds.clear();
seeds.shrink_to_fit();
seeds = std::move(newseeds);
}
//bool exportavi(std::vector<std::vector<uint8_t>> frames, AnimationConfig config) {
bool exportavi(std::vector<frame> frames, AnimationConfig config) {
TIME_FUNCTION;
std::string filename = "output/chromatic_transformation.avi";
std::cout << "Frame count: " << frames.size() << std::endl;
// Log compression statistics for all frames
std::cout << "\n=== Frame Compression Statistics ===" << std::endl;
size_t totalOriginalSize = 0;
size_t totalCompressedSize = 0;
for (int i = 0; i < frames.size(); ++i) {
totalOriginalSize += frames[i].getSourceSize();
totalCompressedSize += frames[i].getTotalCompressedSize();
}
double overallRatio = static_cast<double>(totalOriginalSize) / totalCompressedSize;
double overallSavings = (1.0 - 1.0/overallRatio) * 100.0;
std::cout << "\n=== Overall Compression Summary ===" << std::endl;
std::cout << "Total frames: " << frames.size() << std::endl;
std::cout << "Compressed frames: " << frames.size() << std::endl;
std::cout << "Total original size: " << totalOriginalSize << " bytes ("
<< std::fixed << std::setprecision(2) << (totalOriginalSize / (1024.0 * 1024.0)) << " MB)" << std::endl;
std::cout << "Total compressed size: " << totalCompressedSize << " bytes ("
<< std::fixed << std::setprecision(2) << (totalCompressedSize / (1024.0 * 1024.0)) << " MB)" << std::endl;
std::cout << "Overall compression ratio: " << std::fixed << std::setprecision(2) << overallRatio << ":1" << std::endl;
std::cout << "Overall space savings: " << std::fixed << std::setprecision(1) << overallSavings << "%" << std::endl;
std::filesystem::path dir = "output";
if (!std::filesystem::exists(dir)) {
if (!std::filesystem::create_directories(dir)) {
std::cout << "Failed to create output directory!" << std::endl;
return false;
}
}
bool success = AVIWriter::saveAVIFromCompressedFrames(filename, frames, frames[0].getWidth(), frames[0].getHeight(), config.fps);
if (success) {
// Check if file actually exists
if (std::filesystem::exists(filename)) {
auto file_size = std::filesystem::file_size(filename);
std::cout << "\nAVI file created successfully: " << filename
<< " (" << file_size << " bytes, "
<< std::fixed << std::setprecision(2) << (file_size / (1024.0 * 1024.0)) << " MB)" << std::endl;
}
} else {
std::cout << "Failed to save AVI file!" << std::endl;
}
return success;
}
void mainLogic(const AnimationConfig& config, Shared& state, int gradnoise) {
TIME_FUNCTION;
if (isGenerating != 0) return; //apparently sometimes this function is called twice. dont know how, but this might resolve that.
try {
Grid2 grid;
isGenerating = 1;
if (gradnoise == 0) {
grid = setup(config);
} else if (gradnoise == 1) {
grid = grid.noiseGenGridTemps(0,0,config.height-1, config.width-1, 0.01, 1.0, false, config.noisemod);
}
grid.setDefault(Vec4(0,0,0,0));
{
std:: lock_guard<std::mutex> lock(state.mutex);
state.grid = grid;
state.hasNewFrame = true;
state.currentFrame = 0;
}
//pickTempSeeds(grid,config);
//std::vector<std::tuple<size_t, Vec2, Vec4>> seeds = pickSeeds(grid, config);
std::cout << "generated grid" << std::endl;
Preview(grid);
std::cout << "generated preview" << std::endl;
grid = grid.backfillGrid();
frame tempData = grid.getTempAsFrame(Vec2(0,0), Vec2(config.height,config.width), Vec2(256,256));
std::cout << "Temp frame looks like: " << tempData << std::endl;
bool success = BMPWriter::saveBMP("output/temperature.bmp", tempData);
if (!success) {
std::cout << "yo! this failed in Preview" << std::endl;
}
isGenerating = 2;
std::vector<frame> frames;
for (int i = 0; i < config.totalFrames; ++i){
// Check if we should stop the generation
if (isGenerating == 0) {
std::cout << "Generation cancelled at frame " << i << std::endl;
return;
}
//expandPixel(grid,config,seeds);
//grid.diffuseTemperatures(1.0, 1.0, 1.0);
std::lock_guard<std::mutex> lock(state.mutex);
state.grid = grid;
state.hasNewFrame = true;
state.currentFrame = i;
// Print compression info for this frame
//if (i % 10 == 0 ) {
frame bgrframe;
std::cout << "Processing frame " << i + 1 << "/" << config.totalFrames << std::endl;
bgrframe = grid.getTempAsFrame(Vec2(0,0), Vec2(config.height,config.width), Vec2(256,256), frame::colormap::BGR);
frames.push_back(bgrframe);
//bgrframe.decompress();
//BMPWriter::saveBMP(std::format("output/grayscalesource.{}.bmp", i), bgrframe);
bgrframe.compressFrameLZ78();
//bgrframe.printCompressionStats();
//}
}
exportavi(frames,config);
}
catch (const std::exception& e) {
std::cerr << "errored at: " << e.what() << std::endl;
}
isGenerating = 0;
}
// Function to cancel ongoing generation
void cancelGeneration() {
if (isGenerating) {
isGenerating = 0;
// Wait for the thread to finish (with timeout to avoid hanging)
if (generationFuture.valid()) {
auto status = generationFuture.wait_for(std::chrono::milliseconds(100));
if (status != std::future_status::ready) {
std::cout << "Waiting for generation thread to finish..." << std::endl;
}
}
}
}
static void glfw_error_callback(int error, const char* description)
{
fprintf(stderr, "GLFW Error %d: %s\n", error, description);
}
int main() {
//static bool window = true;
glfwSetErrorCallback(glfw_error_callback);
if (!glfwInit()) {
std::cerr << "gui stuff is dumb in c++." << std::endl;
glfwTerminate();
return 1;
}
// COPIED VERBATIM FROM IMGUI.
#if defined(IMGUI_IMPL_OPENGL_ES2)
// GL ES 2.0 + GLSL 100 (WebGL 1.0)
const char* glsl_version = "#version 100";
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
#elif defined(IMGUI_IMPL_OPENGL_ES3)
// GL ES 3.0 + GLSL 300 es (WebGL 2.0)
const char* glsl_version = "#version 300 es";
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
#elif defined(__APPLE__)
// GL 3.2 + GLSL 150
const char* glsl_version = "#version 150";
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); // 3.2+ only
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // Required on Mac
#else
// GL 3.0 + GLSL 130
const char* glsl_version = "#version 130";
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
//glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); // 3.2+ only
//glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // 3.0+ only
#endif
//ImGui::SetNextWindowSize(ImVec2(1110,667));
//auto beg = ImGui::Begin("Gradient thing", &window);
//if (beg) {
// std::cout << "stuff breaks at 223" << std::endl;
bool application_not_closed = true;
//float main_scale = ImGui_ImplGlfw_GetContentScaleForMonitor(glfwGetPrimaryMonitor());
GLFWwindow* window = glfwCreateWindow((int)(1280), (int)(800), "Chromatic gradient generator thing", nullptr, nullptr);
if (window == nullptr)
return 1;
glfwMakeContextCurrent(window);
glfwSwapInterval(1);
//IMGUI_CHECKVERSION(); //this might be more important than I realize. but cant run with it so currently ignoring.
ImGui::CreateContext();
// std::cout << "context created" << std::endl;
ImGuiIO& io = ImGui::GetIO(); (void)io;
io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
ImGui::StyleColorsDark();
ImGuiStyle& style = ImGui::GetStyle();
//style.ScaleAllSizes(1); // Bake a fixed style scale. (until we have a solution for dynamic style scaling, changing this requires resetting Style + calling this again)
//style.FontScaleDpi = 1; //will need to implement my own scaling at some point. currently just ignoring it.
ImGui_ImplGlfw_InitForOpenGL(window, true);
#ifdef __EMSCRIPTEN__
ImGui_ImplGlfw_InstallEmscriptenCallbacks(window, "#canvas");
#endif
ImGui_ImplOpenGL3_Init(glsl_version);
// std::cout << "created glfw window" << std::endl;
bool show_demo_window = true;
bool show_another_window = false;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
static float f = 30.0f;
static int i1 = 1024;
static int i2 = 1024;
static int i3 = 480;
static int i4 = 8;
static int noisemod = 42;
static float fs = 1.0;
int gradnoise = 1;
std::future<void> mainlogicthread;
Shared state;
Grid2 grid;
AnimationConfig config;
previewText = "Please generate";
mainlogicthread = std::async(std::launch::async, mainLogic, config, std::ref(state), gradnoise);
while (!glfwWindowShouldClose(window)) {
glfwPollEvents();
// Start the Dear ImGui frame
ImGui_ImplOpenGL3_NewFrame();
ImGui_ImplGlfw_NewFrame();
ImGui::NewFrame();
{
ImGui::Begin("settings");
ImGui::SliderFloat("fps", &f, 20.0f, 60.0f);
ImGui::SliderInt("width", &i1, 256, 4096);
ImGui::SliderInt("height", &i2, 256, 4096);
ImGui::SliderInt("frame count", &i3, 10, 5000);
ImGui::SliderInt("number of Seeds", &i4, 0, 10);
ImGui::SliderInt("Noise Mod", &noisemod, 0, 1000);
ImGui::SliderFloat("Scale Preview", &fs, 0.0, 2.0);
ImGui::RadioButton("Gradient", &gradnoise, 0);
ImGui::RadioButton("Perlin Noise", &gradnoise, 1);
if (isGenerating != 0) {
ImGui::BeginDisabled();
}
if (ImGui::Button("Generate Animation")) {
config = AnimationConfig(i1, i2, i3, f, i4, noisemod);
mainlogicthread = std::async(std::launch::async, mainLogic, config, std::ref(state), gradnoise);
}
if (isGenerating == 2 && textu != 0) {
ImGui::EndDisabled();
ImGui::SameLine();
if (ImGui::Button("Cancel")) {
cancelGeneration();
}
// Check for new frames from the generation thread
bool hasNewFrame = false;
{
std::lock_guard<std::mutex> lock(state.mutex);
if (state.hasNewFrame) {
livePreview(state.grid, config);
state.hasNewFrame = false;
previewText = "Generating... Frame: " + std::to_string(state.currentFrame);
}
}
ImGui::Text(previewText.c_str());
if (textu != 0) {
ImVec2 imageSize = ImVec2(config.width * fs, config.height * fs);
ImVec2 uv_min = ImVec2(0.0f, 0.0f);
ImVec2 uv_max = ImVec2(1.0f, 1.0f);
ImGui::Image((void*)(intptr_t)textu, imageSize, uv_min, uv_max);
} else {
ImGui::Text("Generating preview...");
}
} else if (isGenerating == 2) {
ImGui::EndDisabled();
ImGui::SameLine();
if (ImGui::Button("Cancel")) {
cancelGeneration();
}
// Check for new frames from the generation thread
bool hasNewFrame = false;
{
std::lock_guard<std::mutex> lock(state.mutex);
if (state.hasNewFrame) {
livePreview(state.grid, config);
state.hasNewFrame = false;
previewText = "Generating... Frame: " + std::to_string(state.currentFrame);
}
}
ImGui::Text(previewText.c_str());
} else if (textu != 0){
//ImGui::EndDisabled();
ImGui::Text(previewText.c_str());
if (textu != 0) {
ImVec2 imageSize = ImVec2(config.width * 0.5f, config.height * 0.5f);
ImVec2 uv_min = ImVec2(0.0f, 0.0f);
ImVec2 uv_max = ImVec2(1.0f, 1.0f);
ImGui::Image((void*)(intptr_t)textu, imageSize, uv_min, uv_max);
} else {
ImGui::Text("Generating preview...");
}
} else if (isGenerating != 0) {
ImGui::EndDisabled();
ImGui::Text(previewText.c_str());
if (textu != 0) {
ImVec2 imageSize = ImVec2(config.width * 0.5f, config.height * 0.5f);
ImVec2 uv_min = ImVec2(0.0f, 0.0f);
ImVec2 uv_max = ImVec2(1.0f, 1.0f);
ImGui::Image((void*)(intptr_t)textu, imageSize, uv_min, uv_max);
} else {
ImGui::Text("Generating preview...");
}
} else {
ImGui::Text("No preview available");
ImGui::Text("Start generation to see live preview");
}
//std::cout << "sleeping" << std::endl;
std::this_thread::sleep_for(std::chrono::milliseconds(100));
//std::cout << "ending" << std::endl;
ImGui::End();
}
// std::cout << "ending frame" << std::endl;
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);
// std::cout << "rendering" << std::endl;
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
glfwSwapBuffers(window);
//mainlogicthread.join();
// std::cout << "swapping buffers" << std::endl;
}
cancelGeneration();
// std::cout << "shutting down" << std::endl;
ImGui_ImplOpenGL3_Shutdown();
ImGui_ImplGlfw_Shutdown();
ImGui::DestroyContext();
// std::cout << "destroying" << std::endl;
glfwDestroyWindow(window);
if (textu != 0) {
glDeleteTextures(1, &textu);
textu = 0;
}
glfwTerminate();
FunctionTimer::printStats(FunctionTimer::Mode::ENHANCED);
// std::cout << "printing" << std::endl;
return 0;
}
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