Qt3d. Draw transparent QSphereMesh over triangles

Question

I have a function that draws triangles through OpenGL

I draw two triangles by pressing a button (function on_drawMapPushButton_clicked()).

Then i draw a sph

Answer 1

My mistake was that i did wrong order of creating and deletion of Triangles and Sphere entities.

In pseudo code right order is as follows:

clearTriangles();
clearSphere();       
drawTriangles();
drawSphere();