aa

include/mesh.hpp

@@ -0,0 +1,51 @@
+#pragma once
+
+#include <array>
+#include <cstdint>
+#include <memory>
+#include <mutex>
+#include <string>
+#include <vector>
+
+namespace openceg {
+
+// 渲染组件：描述 Actor 的几何形状、颜色和纹理占位。
+class Mesh {
+   public:
+    struct Vertex {
+        std::array<float, 2> position;
+        std::array<float, 4> color;
+    };
+
+    std::vector<Vertex> vertices;
+    std::vector<uint32_t> indices;
+    std::string texture;  // 纹理路径占位，暂未采样。
+
+    std::array<float, 4> color() const {
+        std::lock_guard<std::mutex> lock(*color_mutex_);
+        return color_;
+    }
+
+    void set_color(std::array<float, 4> color) {
+        std::lock_guard<std::mutex> lock(*color_mutex_);
+        color_ = color;
+    }
+
+    static Mesh quad() {
+        Mesh mesh;
+        mesh.vertices = {
+            {{-1.0F, -1.0F}, {1.0F, 1.0F, 1.0F, 1.0F}},
+            {{1.0F, -1.0F}, {1.0F, 1.0F, 1.0F, 1.0F}},
+            {{1.0F, 1.0F}, {1.0F, 1.0F, 1.0F, 1.0F}},
+            {{-1.0F, 1.0F}, {1.0F, 1.0F, 1.0F, 1.0F}},
+        };
+        mesh.indices = {0, 1, 2, 2, 3, 0};
+        return mesh;
+    }
+
+   private:
+    std::unique_ptr<std::mutex> color_mutex_ = std::make_unique<std::mutex>();
+    std::array<float, 4> color_{1.0F, 1.0F, 1.0F, 1.0F};
+};
+
+}  // namespace openceg