private void ApplyScrollEffects(RectTransform page)
{
int index = visiblePageToIndex[page];
float offset = OffsetFromIndex(index);
bool isActivePage = page == activePage;
bool isInteractable = shouldTilesAlwaysBeInteractable || isActivePage;
BaseScrollEffect.UpdateData updateData = new BaseScrollEffect.UpdateData();
updateData.page = page;
updateData.pageIndex = index;
updateData.pageCount = PageCount;
updateData.pageOffset = offset;
updateData.scrollOffset = ScrollOffset;
updateData.spacing = pageProvider.GetSpacing();
updateData.looping = loop;
updateData.isInteractable = isInteractable;
updateData.moveDistance = CurrentMoveDistance;
for (int i = 0; i < scrollEffects.Length; i++)
{
BaseScrollEffect scrollEffect = scrollEffects[i];
if (scrollEffect.enabled)
{
scrollEffect.ApplyEffect(updateData);
}
}
}
public override void ApplyEffect(BaseScrollEffect.UpdateData updateData) {
CanvasGroup pageCanvasGroup = updateData.page.GetComponent<CanvasGroup>();
/// All pages require a CanvasGroup for manipulating Alpha.
if (pageCanvasGroup == null) {
Debug.LogError("Cannot adjust alpha for page " + updateData.page.name + ", missing CanvasGroup");
return;
}
// Calculate the difference
float difference = updateData.scrollOffset - updateData.pageOffset;
/// Calculate the alpha for this page.
float alpha = 1.0f - (Mathf.Abs(difference) / updateData.spacing);
alpha = (alpha * (1.0f - minAlpha)) + minAlpha;
alpha = Mathf.Clamp(alpha, 0.0f, 1.0f);
/// If this is the last page or the first page,
/// Then we clamp the alpha to 1 when dragging past the edge
/// Of the scrolling region.
if (!updateData.looping) {
if (updateData.pageIndex == 0 && difference < 0) {
alpha = 1.0f;
} else if (updateData.pageIndex == updateData.pageCount - 1 && difference > 0) {
alpha = 1.0f;
}
}
pageCanvasGroup.alpha = alpha;
}
public override void ApplyEffect(BaseScrollEffect.UpdateData updateData) {
float distance = updateData.pageOffset - updateData.scrollOffset;
float absDistance = Mathf.Abs(distance);
updateData.page.anchoredPosition3D = new Vector3(
(mirrorX ? absDistance : distance) * Weights.x,
(mirrorY ? absDistance : distance) * Weights.y,
(mirrorZ ? absDistance : distance) * Weights.z);
}
public override void ApplyEffect(BaseScrollEffect.UpdateData updateData) {
// Calculate the difference.
float difference = updateData.scrollOffset - updateData.pageOffset;
// Calculate the scale for this page.
float ratioScrolled = Mathf.Abs(difference) / updateData.spacing;
float scale = ((1.0f - ratioScrolled) * (1.0f - minScale)) + minScale;
scale = Mathf.Clamp(scale, 0.0f, 1.0f);
// Update the scale.
updateData.page.localScale = new Vector3(scale, scale, scale);
}
public override void ApplyEffect(BaseScrollEffect.UpdateData updateData) {
TiledPage tiledPage = updateData.page.GetComponent<TiledPage>();
if (tiledPage == null) {
Debug.LogError("Page (" + updateData.page.name + ") does not have TiledPage. " +
"Cannot apply TileScrollEffect.");
return;
}
/// Calculate the distance between the scroll position and this page.
float difference = updateData.scrollOffset - updateData.pageOffset;
float clampedDifference = Mathf.Clamp(difference, -updateData.spacing, updateData.spacing);
tiledPage.ApplyScrollEffect(clampedDifference, updateData.spacing, updateData.isInteractable);
}
