void UpdateIndicatorElement(HUDNavigationElement element, Vector3 screenPos, float distance)
{
if (useIndicators && element.showIndicator)
{
// check indicator distance
if ((distance > indicatorRadius && !element.ignoreIndicatorRadius))
{
element.SetIndicatorActive(false);
// invoke events
if (element.IsInIndicatorRadius)
{
element.IsInIndicatorRadius = false;
element.OnLeaveRadius.Invoke(element, NavigationElementType.Indicator);
}
}
else
{
// check if element is visible on screen
bool _isElementOnScreen = element.IsVisibleOnScreen(screenPos);
if (!_isElementOnScreen)
{
if (useOffscreenIndicators && element.showOffscreenIndicator)
{
// flip if indicator is behind us
if (screenPos.z < 0f)
{
screenPos.x = Screen.width - screenPos.x;
screenPos.y = Screen.height - screenPos.y;
}
// calculate off-screen position/rotation
Vector3 screenCenter = new Vector3(Screen.width, Screen.height, 0f) / 2f;
screenPos -= screenCenter;
float angle = Mathf.Atan2(screenPos.y, screenPos.x);
angle -= 90f * Mathf.Deg2Rad;
float cos = Mathf.Cos(angle);
float sin = -Mathf.Sin(angle);
float cotangent = cos / sin;
screenPos = screenCenter + new Vector3(sin * 50f, cos * 50f, 0f);
// is indicator inside the defined bounds?
float offset = Mathf.Min(screenCenter.x, screenCenter.y);
offset = Mathf.Lerp(0f, offset, indicatorOffscreenBorder);
Vector3 screenBounds = screenCenter - new Vector3(offset, offset, 0f);
float boundsY = (cos > 0f) ? screenBounds.y : -screenBounds.y;
screenPos = new Vector3(boundsY / cotangent, boundsY, 0f);
// when out of bounds, get point on appropriate side
if (screenPos.x > screenBounds.x) // out => right
{
screenPos = new Vector3(screenBounds.x, screenBounds.x * cotangent, 0f);
}
else if (screenPos.x < -screenBounds.x) // out => left
{
screenPos = new Vector3(-screenBounds.x, -screenBounds.x * cotangent, 0f);
}
screenPos += screenCenter;
// update indicator rotation
element.SetIndicatorOffscreenRotation(Quaternion.Euler(0f, 0f, angle * Mathf.Rad2Deg));
}
else
{
// hide indicator offscreen
element.SetIndicatorActive(false);
return;
}
}
// show indicator distance?
element.ShowIndicatorDistance(_isElementOnScreen, (int)distance);
// set indicator on/offscreen
element.SetIndicatorOnOffscreen(_isElementOnScreen);
// update indicator values
element.SetIndicatorPosition(screenPos, _HUDNavigationCanvas.Indicator.ElementContainer);
element.SetIndicatorScale(distance, indicatorScaleRadius, indicatorMinScale);
element.SetIndicatorActive((indicatorHideDistance > 0f && !element.ignoreIndicatorHideDistance) ? distance > indicatorHideDistance : true);
// invoke events
if (!element.IsInIndicatorRadius)
{
element.IsInIndicatorRadius = true;
element.OnEnterRadius.Invoke(element, NavigationElementType.Indicator);
}
}
}
else
{
element.SetIndicatorActive(false);
}
}