void UpdateRoll()
{
// prepare data
float[] origins = new float[3];
GetPositions(ref origins);
float offset = origins[1] - origins[0];
float speed = offset * 0.25f;
// compute new position
float newY = m_MiddleLabel.Widget.GetRectInScreenCoords().center.y - speed;
float[] pos = new float[3];
if (CanSwapLabels(newY, origins[0] + offset * 0.5f) == true)
{
pos[0] = newY;
pos[1] = pos[0] + offset;
pos[2] = pos[1] + offset;
SetCurrentSelection(m_PendingSelection);
m_IsDirty = true;
}
else if (CanRollLabels(newY, origins[1]) == true)
{
pos[0] = newY - offset;
pos[1] = newY;
pos[2] = newY + offset;
m_IsDirty = true;
}
else
{
pos[0] = origins[0];
pos[1] = origins[1];
pos[2] = origins[2];
}
// set new position
SetPositions(ref pos);
// update direction state
if (m_IsDirty == false)
{
m_RollDirection = E_RollDirection.None;
}
}
public void SelectNext()
{
if (m_Items.Length <= 1)
{
return;
}
int idx = Selection + 1;
if (idx >= m_Items.Length)
{
idx = 0;
}
Selection = idx;
m_RollDirection = E_RollDirection.Down;
}
public void SelectPrevious()
{
if (m_Items.Length <= 1)
{
return;
}
int idx = Selection - 1;
if (idx < 0)
{
idx = Mathf.Max(0, m_Items.Length - 1);
}
Selection = idx;
m_RollDirection = E_RollDirection.Up;
}
// PUBLIC METHODS
public void SetSelection(int value, bool immediate = false)
{
m_PendingSelection = Mathf.Clamp(value, 0, m_Items.Length - 1);
if (m_CurrentSelection == m_PendingSelection)
{
return;
}
if (immediate == true)
{
m_CurrentSelection = m_PendingSelection;
UpdateTexts();
}
else
{
m_RollDirection = m_CurrentSelection > m_PendingSelection ? E_RollDirection.Down : E_RollDirection.Up;
m_IsDirty = true;
}
}
