private Vector3 newPoint(int x, float y)
{
_lastVal = Mathf.Clamp(y, 0, graphHeight);
return new Vector3(
x * _ratioW + _panelInfos.panelPos.x + 0.001f*_panelInfos.padding,
_lastVal * _ratioH + _panelInfos.panelPos.y + 0.001f*_panelInfos.padding,
_panelInfos.panelPos.z + (y > graphHeight || y < 0 ? 0.01f : -0.01f)
);
}