public void DrawSphere(Vector3 centre, float radius, ColourValue colour, bool isFilled)
{
int baseIndex = linesIndex;
linesIndex += icoSphere.AddToVertices(lineVertices, centre, colour, radius);
icoSphere.AddToLineIndices(baseIndex, lineIndices);
if (isFilled)
{
baseIndex = trianglesIndex;
trianglesIndex += icoSphere.AddToVertices(triangleVertices, centre, new ColourValue(colour.r, colour.g, colour.b, fillAlpha), radius);
icoSphere.AddToTriangleIndices(baseIndex, triangleIndices);
}
}