From 787f5490a9fb571a142303a407df2a6f29c860bd Mon Sep 17 00:00:00 2001
From: gramosomi <miguelafonsogramoso@gmail.com>
Date: Thu, 29 Feb 2024 21:04:28 +0000
Subject: [PATCH] sphere

---
 generator/include/shapes/sphere.hpp | 11 ++++++
 generator/src/main.cpp              |  6 +++
 generator/src/shapes/sphere.cpp     | 61 +++++++++++++++++++++++++++++
 3 files changed, 78 insertions(+)
 create mode 100644 generator/include/shapes/sphere.hpp
 create mode 100644 generator/src/shapes/sphere.cpp

diff --git a/generator/include/shapes/sphere.hpp b/generator/include/shapes/sphere.hpp
new file mode 100644
index 0000000..5b0fb5b
--- /dev/null
+++ b/generator/include/shapes/sphere.hpp
@@ -0,0 +1,11 @@
+#ifndef SOLAR_SYSTEM_SPHERE_HPP
+#define SOLAR_SYSTEM_SPHERE_HPP
+
+
+#include <vector>
+#include <string>
+#include "../utils.hpp"
+
+bool generateSphere(float radius, int slices, int stacks, const char* filepath);
+
+#endif //SOLAR_SYSTEM_SPHERE_HPP
\ No newline at end of file
diff --git a/generator/src/main.cpp b/generator/src/main.cpp
index d5084a6..e3eea97 100644
--- a/generator/src/main.cpp
+++ b/generator/src/main.cpp
@@ -4,6 +4,7 @@
 #include "../include/shapes/cone.hpp"
 #include "../include/shapes/cube.hpp"
 #include "../include/shapes/plane.hpp"
+#include "../include/shapes/sphere.hpp"
 
 void generateFigure(int argc, char* argv[]) {
   if (argc < 5) {
@@ -17,6 +18,11 @@ void generateFigure(int argc, char* argv[]) {
   if (figureName == "sphere" && argc == 6) {
     // Generate Sphere
     std::cout << "Generating Sphere\n";
+    float radius = std::stof(argv[2]);
+    int slices = std::stoi(argv[3]);
+    int stacks = std::stoi(argv[4]);
+
+    generateSphere(radius, slices, stacks, figureType);
   } else if (figureName == "box" && argc == 5) {
     // Generate Box
     std::cout << "Generating Box\n";
diff --git a/generator/src/shapes/sphere.cpp b/generator/src/shapes/sphere.cpp
new file mode 100644
index 0000000..2ab9258
--- /dev/null
+++ b/generator/src/shapes/sphere.cpp
@@ -0,0 +1,61 @@
+#include <fstream>
+#include <iostream>
+#include <vector>
+#include <cmath>
+
+#include "utils.hpp"
+
+std::vector<Point> sphereTriangles(float radius, int slices, int stacks) {
+    std::vector<Point> points;
+
+    for (int i = 0; i < slices; ++i) {
+        float theta1 = static_cast<float>(i) * static_cast<float>(M_PI) / static_cast<float>(slices);
+        float theta2 = static_cast<float>(i + 1) * static_cast<float>(M_PI) / static_cast<float>(slices);
+
+        for (int j = 0; j < stacks; ++j) {
+            float phi1 = static_cast<float>(j) * 2.0f * static_cast<float>(M_PI) / static_cast<float>(stacks);
+            float phi2 = static_cast<float>(j + 1) * 2.0f * static_cast<float>(M_PI) / static_cast<float>(stacks);
+
+            // Vertices
+            float x1 = radius * std::sin(theta1) * std::cos(phi1);
+            float y1 = radius * std::sin(theta1) * std::sin(phi1);
+            float z1 = radius * std::cos(theta1);
+
+            float x2 = radius * std::sin(theta1) * std::cos(phi2);
+            float y2 = radius * std::sin(theta1) * std::sin(phi2);
+            float z2 = radius * std::cos(theta1);
+
+            float x3 = radius * std::sin(theta2) * std::cos(phi1);
+            float y3 = radius * std::sin(theta2) * std::sin(phi1);
+            float z3 = radius * std::cos(theta2);
+
+            float x4 = radius * std::sin(theta2) * std::cos(phi2);
+            float y4 = radius * std::sin(theta2) * std::sin(phi2);
+            float z4 = radius * std::cos(theta2);
+
+            // Push vertices in counter-clockwise order
+            points.push_back(Point(x1, y1, z1));
+            points.push_back(Point(x2, y2, z2));
+            points.push_back(Point(x4, y4, z4));
+
+            points.push_back(Point(x1, y1, z1));
+            points.push_back(Point(x4, y4, z4));
+            points.push_back(Point(x3, y3, z3));
+        }
+    }
+
+    return points;
+}
+
+bool generateSphere(float radius, int slices, int stacks, const char* filepath) {
+    std::vector<Point> triangles = sphereTriangles(radius, slices, stacks);
+
+    if (triangles.empty()) {
+        std::cerr << "Error: Empty vector of triangles.\n";
+        return false;
+    }
+
+    saveToFile(triangles, filepath);
+
+    return true;
+}
\ No newline at end of file