dbg.vertex(corners[0].x, corners[0].y, corners[0].z + offset);
dbg.color(r, g, b, alpha);
dbg.vertex(corners[1].x, corners[1].y, corners[1].z + offset);
dbg.color(r, g, b, alpha);
dbg.vertex(corners[4].x, corners[4].y, corners[4].z);
dbg.vertex(corners[1].x, corners[1].y, corners[1].z + offset);
dbg.color(r, g, b, alpha);
dbg.vertex(corners[4].x, corners[4].y, corners[4].z);
dbg.color(r, g, b, alpha);
dbg.vertex(corners[5].x, corners[5].y, corners[5].z);
dbg.vertex(corners[1].x, corners[1].y, corners[1].z + offset);
dbg.color(r, g, b, alpha);
dbg.vertex(corners[2].x, corners[2].y, corners[2].z + offset);
dbg.color(r, g, b, alpha);
dbg.vertex(corners[5].x, corners[5].y, corners[5].z);
dbg.vertex(corners[2].x, corners[2].y, corners[2].z + offset);
dbg.color(r, g, b, alpha);
dbg.vertex(corners[5].x, corners[5].y, corners[5].z);
dbg.color(r, g, b, alpha);
dbg.vertex(corners[6].x, corners[6].y, corners[6].z);
dbg.vertex(corners[2].x, corners[2].y, corners[2].z + offset);
dbg.color(r, g, b, alpha);
dbg.vertex(corners[6].x, corners[6].y, corners[6].z);
dbg.color(r, g, b, alpha);
dbg.vertex(corners[3].x, corners[3].y, corners[3].z + offset);