static bool apply2Dsprings(GameObject target, Constraint constraint, Event ui)
{
int springIndex = ui.springIndex;
// apply springs to gui object. returns true if it did anything.
bool result = false;
Vector3 anchor = target.GetComponent <RectTransform>().anchoredPosition;
if (constraint.edgeSprings)
{
result = true;
if (anchor.x < constraint.edgeSpringMin.x)
{
anchor.x = Mathf.SmoothDamp(anchor.x, constraint.edgeSpringMin.x, ref ui.eVel0, 0.15f);
}
else if (anchor.x > constraint.edgeSpringMax.x)
{
anchor.x = Mathf.SmoothDamp(anchor.x, constraint.edgeSpringMax.x, ref ui.eVel1, 0.15f);
}
if (anchor.y < constraint.edgeSpringMin.y)
{
anchor.y = Mathf.SmoothDamp(anchor.y, constraint.edgeSpringMin.y, ref ui.eVel2, 0.15f);
}
else if (anchor.y > constraint.edgeSpringMax.y)
{
anchor.y = Mathf.SmoothDamp(anchor.y, constraint.edgeSpringMax.y, ref ui.eVel3, 0.15f);
}
float maxVel = Mathf.Max(Mathf.Abs(ui.eVel0), Mathf.Abs(ui.eVel1), Mathf.Abs(ui.eVel2), Mathf.Abs(ui.eVel3));
if (maxVel < 1f)
{
// maxvel 0 implies springs not actually doing anything, so return should be false
result = false;
}
}
if (constraint.springs)
{
result = true;
int closestSpring = -1;
float closest = 9999999999f;
if (springIndex >= 0)
{
closestSpring = springIndex;
}
else
{
for (int i = 0; i < constraint.springPositions.Length; i++)
{
// find nearest spring
Vector3 theSpringPosition = constraint.springPositions[i];
float distance = Vector2.Distance(anchor, theSpringPosition);
if (distance < closest)
{
closest = distance;
closestSpring = i;
}
}
}
//float eVel0 = 0;
//float eVel1 = 0;
anchor.x = Mathf.SmoothDamp(anchor.x, constraint.springPositions[closestSpring].x, ref ui.eVel0, 0.15f);
anchor.y = Mathf.SmoothDamp(anchor.y, constraint.springPositions[closestSpring].y, ref ui.eVel1, 0.15f);
float maxVel = Mathf.Max(Mathf.Abs(ui.eVel0), Mathf.Abs(ui.eVel1));
// float maxVel = Mathf.Max (eVel0, eVel1);
// if (maxVel > 0f && maxVel < 1f) {
if (maxVel < 1f)
{
// Note that speed is per second. So 1 pixel per second. Maybe look at dx dy since last time.
// Also, last is not per se deltatime ago.
// maxvel 0 implies springs not actually doing anything, so return should be false
result = false;
}
}
target.GetComponent <RectTransform>().anchoredPosition = anchor;
return(result);
}
