// -----------------------
protected Vector2 GetControlOffset()
{
if (this.canvas == null)
{
return(Vector2.zero);
}
List <TouchControl> controlList = this.panel.rig.GetTouchControls();
//Rect canvasRect = ((RectTransform)this.canvas.transform).rect;
Rect panelRect = ((RectTransform)this.panel.transform).rect;
float controlRad = this.GetControlSize() / 2.0f;
float separation = Mathf.Min(panelRect.width, panelRect.height) * 0.01f;
Vector2 anchorPos = Vector2.one * (controlRad + separation);
Bounds worldBounds = CFUtils.GetWorldAABB(this.canvas.transform.localToWorldMatrix, BottomLeftToAnchorRelativeLocal(anchorPos), new Vector3(controlRad * 2, controlRad * 2, 0));
float worldControlRad = Mathf.Max(worldBounds.size.x, worldBounds.size.y) * 0.5f;
Vector2 bestPos = anchorPos;
float bestDist = 100; // closest distance to other controls
bool bestPosFound = false;
int ringCount = Mathf.Max(1,
Mathf.CeilToInt((panelRect.width - separation) / ((controlRad * 2.0f) + separation)), //Factor)),
Mathf.CeilToInt((panelRect.height - separation) / ((controlRad * 2.0f) + separation))); //Factor)));
for (int ri = 0; ri < ringCount; ++ri)
{
float ringRad = separation + ((float)ri * ((controlRad * 2.0f) + separation)); //Factor);
float controlArcAngle = GetArcAngle(ringRad, controlRad) * Mathf.Rad2Deg;
int stepCount = (ringRad < 0.0001f) ? 1 : Mathf.Max(1, Mathf.CeilToInt(90 / controlArcAngle));
//float angleInc = controlArcAngle;
//float angleOfs = ((90 - ((float)stepCount * angleInc)) * 0.5f) + (angleInc * 0.5f);
if (stepCount <= 1)
{
// angleInc =0;
// angleOfs = 0;
}
for (int si = 0; si < stepCount; ++si)
{
//float orbitAngle = (angleOfs + ((float)si * angleInc)) ;
float orbitAngle = (stepCount < 2) ? 45 : (((float)(si) + 0) * (90.0f / (float)(stepCount - 1)));
Vector2 pos = anchorPos + ((new Vector2(Mathf.Cos(orbitAngle * Mathf.Deg2Rad), Mathf.Sin(orbitAngle * Mathf.Deg2Rad))) * ringRad); //* separationFactor;
if ((pos.x > panelRect.width) || (pos.y > panelRect.height))
{
continue;
}
Vector2 worldPos = this.BottomLeftToAnchorRelativeWorldPos(pos); // this.canvas.transform.localToWorldMatrix.MultiplyPoint3x4((Vector3)pos);
if (controlList.Count == 0)
{
break;
}
bool controlTested = false;
float closestControlDist = -100000;
Vector2 closestControlPos = Vector2.zero;
for (int ci = 0; ci < controlList.Count; ++ci)
{
TouchControl c = controlList[ci];
if ((c is DynamicRegion) ||
CFUtils.IsStretchyRectTransform(c.transform))
{
continue;
}
Bounds controlBounds = c.GetWorldSpaceAABB();
Vector2 testControlCen = controlBounds.center;
Vector2 testControlSize = controlBounds.size;
float testControlRad = Mathf.Max(testControlSize.x, testControlSize.y) / 2.0f;
float curDist = (testControlCen - worldPos).magnitude - (testControlRad);
if (!controlTested || ((curDist < closestControlDist)))
{
controlTested = true;
closestControlDist = curDist;
closestControlPos = pos;
}
}
if (!controlTested)
{
}
else
{
if (closestControlDist >= worldControlRad)
{
return(this.BottomLeftToAnchorRelativePos(closestControlPos));
}
if (closestControlDist > 0) //-(worldControlRad * 0.5f))
{
return(this.BottomLeftToAnchorRelativePos(closestControlPos));
}
if (!bestPosFound || (closestControlDist > bestDist))
{
bestPosFound = true;
bestDist = closestControlDist;
bestPos = closestControlPos;
}
}
}
}
// If the control is almost fully covered by other controls, place it at default position...
if (bestDist < -(worldControlRad * 0.9f))
{
bestPos = anchorPos;
}
else
{
//Debug.Log("GetOffs : returning best IMPERFECTn pos : dist : " + bestDist + " pos: " + bestPos +" rad: " + controlRad + " worldRad: " + worldControlRad + " ctrlNear: " + ((bestControlNear==null)? "NULL" : bestControlNear.name) + "ctrlRad:" + bestControlRad);
}
return(this.BottomLeftToAnchorRelativePos(bestPos));
}