internal void CalculateOffset()
{
if (offsetByCameraY)
{
limit.OffsetY = ViewEnv.OffsetFromRelativeY(0).y;
}
}
public static void Init(ActionList <float> updater, Camera main_, Camera ui_, Canvas canvas_)
{
Performance.RecordProfiler(nameof(ViewEnv));
Instance = new ViewEnv();
OnScreenSizeChange = new ActionList <int, int, float>(4, nameof(OnScreenSizeChange));
OnDrag = new ActionList <Vector3, Vector3>(8, nameof(OnDrag));
OnZoom = new ActionList <float>(8, nameof(OnZoom));
MainCamera = main_;
//NOTE don't support overlay canvas, not quite controllable performance wise
UICamera = ui_;
MainCanvas = canvas_;
_perspectiveProjectionFactor = (float)Math.Tan(MainCamera.fieldOfView * Mathf.Deg2Rad * 0.5f);
CheckScreenSize();
CheckCanvas();
InitViewport();
ResetCoordinateSystem();
CanvasContent = MainCanvas.transform.AddChildRect("content");
CanvasOverlay = MainCanvas.transform.AddChildRect("overlay");
updater.Add(Instance.Update, Instance);
Performance.End(nameof(ViewEnv));
}
public void Sync(Vector3 position)
{
_content.localPosition = ViewEnv.WorldToCanvasSpace(position);
}
public void OnZoom(float _)
{
CalculateViewExtent();
ViewEnv.TryLimitPosition();
}
//TODO need to compensate view extent
public void InitWithCorner(Vector3 posTopLeft, Vector3 posBottomRight)
{
var system = ViewEnv.CameraSystem;
var vTL = system.WorldToSystemXY(posTopLeft);
var vBR = system.WorldToSystemXY(posBottomRight);
var center = new Vector2(0.5f * (vTL.x + vBR.x), 0.5f * (vTL.y + vBR.y)) + ViewEnv.OffsetFromRelativeY(0);
var extent = new Vector2(0.5f * Mathf.Abs(vTL.x - vBR.x), 0.5f * Mathf.Abs(vTL.y - vBR.y));
Init(extent, center);
}