feat(p_cube.hpp): add vertice & indice length

src/core/vbo.cpp

@@ -0,0 +1,16 @@
+#include "vbo.hpp"
+
+VBO::VBO() : id(0) {}
+
+void VBO::setData(const GLfloat* vertices, size_t size)
+{
+  if (this->id == 0) glGenBuffers(1, &this->id);
+  glBindBuffer(GL_ARRAY_BUFFER, this->id);
+  glBufferData(GL_ARRAY_BUFFER, size, vertices, GL_STATIC_DRAW);
+}
+
+VBO::~VBO() { glDeleteBuffers(1, &this->id); }
+
+void VBO::bind() { glBindBuffer(GL_ARRAY_BUFFER, this->id); }
+
+void VBO::unbind() { glBindBuffer(GL_ARRAY_BUFFER, 0); }