118 lines
4.1 KiB
C++
118 lines
4.1 KiB
C++
#include <iostream>
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#include <string>
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#include "util/simple_httpserver.hpp"
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#include "util/grid2.hpp"
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#include "util/bmpwriter.hpp"
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#include "util/jxlwriter.hpp"
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#include "util/timing_decorator.hpp"
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// Function to convert hex color string to Vec4
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Vec4 hexToVec4(const std::string& hex) {
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if (hex.length() != 6) {
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return Vec4(0, 0, 0, 1); // Default to black if invalid
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}
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int r, g, b;
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sscanf(hex.c_str(), "%02x%02x%02x", &r, &g, &b);
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return Vec4(r / 255.0f, g / 255.0f, b / 255.0f, 1.0f);
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}
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// Generate gradient image
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bool generateGradientImage(const std::string& filename, int width = 512, int height = 512) {
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#TIME_FUNCTION;
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const int POINTS_PER_DIM = 256;
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Grid2 grid;
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// Define our target colors at specific positions
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Vec4 white = hexToVec4("ffffff"); // Top-left corner (1,1)
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Vec4 red = hexToVec4("ff0000"); // Top-right corner (1,-1)
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Vec4 green = hexToVec4("00ff00"); // Center (0,0)
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Vec4 blue = hexToVec4("0000ff"); // Bottom-left corner (-1,-1)
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Vec4 black = hexToVec4("000000"); // Bottom-right corner (-1,1)
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// Create gradient points
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for (int y = 0; y < POINTS_PER_DIM; ++y) {
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for (int x = 0; x < POINTS_PER_DIM; ++x) {
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// Normalize coordinates to [-1, 1]
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float nx = (static_cast<float>(x) / (POINTS_PER_DIM - 1)) * 2.0f - 1.0f;
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float ny = (static_cast<float>(y) / (POINTS_PER_DIM - 1)) * 2.0f - 1.0f;
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// Create position
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Vec2 pos(nx, ny);
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// Convert to [0,1] range for interpolation
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float u = (nx + 1.0f) / 2.0f;
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float v = (ny + 1.0f) / 2.0f;
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// Bilinear interpolation between corners
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Vec4 top = white * (1.0f - u) + red * u;
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Vec4 bottom = blue * (1.0f - u) + black * u;
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Vec4 cornerColor = top * (1.0f - v) + bottom * v;
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// Calculate distance from center (0,0)
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float distFromCenter = std::sqrt(nx * nx + ny * ny) / std::sqrt(2.0f);
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Vec4 color = green * (1.0f - distFromCenter) + cornerColor * distFromCenter;
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grid.addPoint(pos, color);
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}
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}
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// Render to RGB image
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std::vector<uint8_t> imageData = grid.renderToRGB(width, height);
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// Save as JXL
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return JXLWriter::saveJXL(filename, imageData, width, height);
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}
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int main(int argc, char* argv[]) {
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// Check command line arguments
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int port = 8080;
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std::string webRoot = "web";
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for (int i = 1; i < argc; ++i) {
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std::string arg = argv[i];
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if (arg == "--port" || arg == "-p") {
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if (i + 1 < argc) {
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port = std::stoi(argv[++i]);
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}
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} else if (arg == "--webroot" || arg == "-w") {
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if (i + 1 < argc) {
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webRoot = argv[++i];
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}
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} else if (arg == "--help" || arg == "-h") {
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std::cout << "Usage: " << argv[0] << " [options]" << std::endl;
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std::cout << "Options:" << std::endl;
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std::cout << " -p, --port PORT Set server port (default: 8080)" << std::endl;
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std::cout << " -w, --webroot DIR Set web root directory (default: web)" << std::endl;
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std::cout << " -h, --help Show this help message" << std::endl;
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return 0;
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}
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}
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// Generate gradient image before starting server
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std::cout << "Generating gradient image..." << std::endl;
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if (generateGradientImage(webRoot + "/gradient.jxl")) {
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std::cout << "Gradient image generated successfully" << std::endl;
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} else {
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std::cerr << "Failed to generate gradient image" << std::endl;
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return 1;
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}
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SimpleHTTPServer server(port, webRoot);
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if (!server.start()) {
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std::cerr << "Failed to start server on port " << port << std::endl;
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return 1;
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}
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std::cout << "Server running on http://localhost:" << port << std::endl;
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std::cout << "Web root: " << webRoot << std::endl;
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std::cout << "Press Ctrl+C to stop the server" << std::endl;
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server.handleRequests();
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return 0;
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} |