/**
* Static function to handle the GUI and User input related to the cascade slider.
*
* @param normalizedCascadePartition The array of partition sizes in the range 0.0f - 1.0f; expects ONE entry if cascades = 2, and THREE if cascades=4
* The last entry will be automatically determined by summing up the array, and doing 1.0f - sum
*/
public static void HandleCascadeSliderGUI(ref float[] normalizedCascadePartitions)
{
GUILayout.Label("Cascade splits");
// get the inspector width since we need it while drawing the partition rects.
// Only way currently is to reserve the block in the layout using GetRect(), and then immediately drawing the empty box
// to match the call to GetRect.
// From this point on, we move to non-layout based code.
var sliderRect = GUILayoutUtility.GetRect(GUIContent.none
, s_CascadeSliderBG
, GUILayout.Height(kSliderbarTopMargin + kSliderbarHeight + kSliderbarBottomMargin)
, GUILayout.ExpandWidth(true));
GUI.Box(sliderRect, GUIContent.none);
float currentX = sliderRect.x;
float cascadeBoxStartY = sliderRect.y + kSliderbarTopMargin;
float cascadeSliderWidth = sliderRect.width - (normalizedCascadePartitions.Length * kPartitionHandleWidth);
Color origTextColor = GUI.color;
Color origBackgroundColor = GUI.backgroundColor;
int colorIndex = -1;
// setup the array locally with the last partition
float[] adjustedCascadePartitions = new float[normalizedCascadePartitions.Length + 1];
Array.Copy(normalizedCascadePartitions, adjustedCascadePartitions, normalizedCascadePartitions.Length);
adjustedCascadePartitions[adjustedCascadePartitions.Length - 1] = 1.0f - normalizedCascadePartitions.Sum();
// check for user input on any of the partition handles
// this mechanism gets the current event in the queue... make sure that the mouse is over our control before consuming the event
int sliderControlId = GUIUtility.GetControlID(s_CascadeSliderId, FocusType.Passive);
Event currentEvent = Event.current;
int hotPartitionHandleIndex = -1; // the index of any partition handle that we are hovering over or dragging
// draw each cascade partition
for (int i = 0; i < adjustedCascadePartitions.Length; ++i)
{
float currentPartition = adjustedCascadePartitions[i];
colorIndex = (colorIndex + 1) % kCascadeColors.Length;
GUI.backgroundColor = kCascadeColors[colorIndex];
float boxLength = (cascadeSliderWidth * currentPartition);
// main cascade box
Rect partitionRect = new Rect(currentX, cascadeBoxStartY, boxLength, kSliderbarHeight);
GUI.Box(partitionRect, GUIContent.none, s_CascadeSliderBG);
currentX += boxLength;
// cascade box percentage text
GUI.color = Color.white;
Rect textRect = partitionRect;
var cascadeText = UnityString.Format("{0}\n{1:F1}%", i, currentPartition * 100.0f);
GUI.Label(textRect, GUIContent.Temp(cascadeText, cascadeText), s_TextCenteredStyle);
// no need to draw the partition handle for last box
if (i == adjustedCascadePartitions.Length - 1)
{
break;
}
// partition handle
GUI.backgroundColor = Color.black;
Rect handleRect = partitionRect;
handleRect.x = currentX;
handleRect.width = kPartitionHandleWidth;
GUI.Box(handleRect, GUIContent.none, s_CascadeSliderBG);
// we want a thin handle visually (since wide black bar looks bad), but a slightly larger
// hit area for easier manipulation
Rect handleHitRect = handleRect;
handleHitRect.xMin -= kPartitionHandleExtraHitAreaWidth;
handleHitRect.xMax += kPartitionHandleExtraHitAreaWidth;
if (handleHitRect.Contains(currentEvent.mousePosition))
{
hotPartitionHandleIndex = i;
}
// add regions to slider where the cursor changes to Resize-Horizontal
if (s_DragCache == null)
{
EditorGUIUtility.AddCursorRect(handleHitRect, MouseCursor.ResizeHorizontal, sliderControlId);
}
currentX += kPartitionHandleWidth;
}
GUI.color = origTextColor;
GUI.backgroundColor = origBackgroundColor;
EventType eventType = currentEvent.GetTypeForControl(sliderControlId);
switch (eventType)
{
case EventType.MouseDown:
if (hotPartitionHandleIndex >= 0)
{
s_DragCache = new DragCache(hotPartitionHandleIndex, normalizedCascadePartitions[hotPartitionHandleIndex], currentEvent.mousePosition);
if (GUIUtility.hotControl == 0)
{
GUIUtility.hotControl = sliderControlId;
}
currentEvent.Use();
// Switch active scene view into shadow cascades visualization mode, once we start
// tweaking cascade splits.
if (s_RestoreSceneView == null)
{
s_RestoreSceneView = SceneView.lastActiveSceneView;
if (s_RestoreSceneView != null)
{
s_OldSceneDrawMode = s_RestoreSceneView.cameraMode;
s_OldSceneLightingMode = s_RestoreSceneView.sceneLighting;
s_RestoreSceneView.cameraMode = SceneView.GetBuiltinCameraMode(DrawCameraMode.ShadowCascades);
}
}
}
break;
case EventType.MouseUp:
// mouseUp event anywhere should release the hotcontrol (if it belongs to us), drags (if any)
if (GUIUtility.hotControl == sliderControlId)
{
GUIUtility.hotControl = 0;
currentEvent.Use();
}
s_DragCache = null;
// Restore previous scene view drawing mode once we stop tweaking cascade splits.
if (s_RestoreSceneView != null)
{
s_RestoreSceneView.cameraMode = s_OldSceneDrawMode;
s_RestoreSceneView.sceneLighting = s_OldSceneLightingMode;
s_RestoreSceneView = null;
}
break;
case EventType.MouseDrag:
if (GUIUtility.hotControl != sliderControlId)
{
break;
}
// convert the mouse movement to normalized cascade width. Make sure that we are safe to apply the delta before using it.
float delta = (currentEvent.mousePosition - s_DragCache.m_LastCachedMousePosition).x / cascadeSliderWidth;
bool isLeftPartitionHappy = ((adjustedCascadePartitions[s_DragCache.m_ActivePartition] + delta) > 0.0f);
bool isRightPartitionHappy = ((adjustedCascadePartitions[s_DragCache.m_ActivePartition + 1] - delta) > 0.0f);
if (isLeftPartitionHappy && isRightPartitionHappy)
{
s_DragCache.m_NormalizedPartitionSize += delta;
normalizedCascadePartitions[s_DragCache.m_ActivePartition] = s_DragCache.m_NormalizedPartitionSize;
if (s_DragCache.m_ActivePartition < normalizedCascadePartitions.Length - 1)
{
normalizedCascadePartitions[s_DragCache.m_ActivePartition + 1] -= delta;
}
GUI.changed = true;
}
s_DragCache.m_LastCachedMousePosition = currentEvent.mousePosition;
currentEvent.Use();
break;
}
}
public static void HandleCascadeSliderGUI(ref float[] normalizedCascadePartitions)
{
GUILayout.Label("Cascade splits", new GUILayoutOption[0]);
Rect rect = GUILayoutUtility.GetRect(GUIContent.none, ShadowCascadeSplitGUI.s_CascadeSliderBG, new GUILayoutOption[]
{
GUILayout.Height(28f),
GUILayout.ExpandWidth(true)
});
GUI.Box(rect, GUIContent.none);
float num = rect.x;
float y = rect.y + 2f;
float num2 = rect.width - (float)(normalizedCascadePartitions.Length * 2);
Color color = GUI.color;
Color backgroundColor = GUI.backgroundColor;
int num3 = -1;
float[] array = new float[normalizedCascadePartitions.Length + 1];
Array.Copy(normalizedCascadePartitions, array, normalizedCascadePartitions.Length);
array[array.Length - 1] = 1f - normalizedCascadePartitions.Sum();
int controlID = GUIUtility.GetControlID(ShadowCascadeSplitGUI.s_CascadeSliderId, FocusType.Passive);
Event current = Event.current;
int num4 = -1;
for (int i = 0; i < array.Length; i++)
{
float num5 = array[i];
num3 = (num3 + 1) % ShadowCascadeSplitGUI.kCascadeColors.Length;
GUI.backgroundColor = ShadowCascadeSplitGUI.kCascadeColors[num3];
float num6 = num2 * num5;
Rect rect2 = new Rect(num, y, num6, 24f);
GUI.Box(rect2, GUIContent.none, ShadowCascadeSplitGUI.s_CascadeSliderBG);
num += num6;
GUI.color = Color.white;
Rect position = rect2;
string text = string.Format("{0}\n{1:F1}%", i, num5 * 100f);
GUI.Label(position, GUIContent.Temp(text, text), ShadowCascadeSplitGUI.s_TextCenteredStyle);
if (i == array.Length - 1)
{
break;
}
GUI.backgroundColor = Color.black;
Rect rect3 = rect2;
rect3.x = num;
rect3.width = 2f;
GUI.Box(rect3, GUIContent.none, ShadowCascadeSplitGUI.s_CascadeSliderBG);
Rect position2 = rect3;
position2.xMin -= 2f;
position2.xMax += 2f;
if (position2.Contains(current.mousePosition))
{
num4 = i;
}
if (ShadowCascadeSplitGUI.s_DragCache == null)
{
EditorGUIUtility.AddCursorRect(position2, MouseCursor.ResizeHorizontal, controlID);
}
num += 2f;
}
GUI.color = color;
GUI.backgroundColor = backgroundColor;
EventType typeForControl = current.GetTypeForControl(controlID);
if (typeForControl != EventType.MouseDown)
{
if (typeForControl != EventType.MouseUp)
{
if (typeForControl == EventType.MouseDrag)
{
if (GUIUtility.hotControl == controlID)
{
float num7 = (current.mousePosition - ShadowCascadeSplitGUI.s_DragCache.m_LastCachedMousePosition).x / num2;
bool flag = array[ShadowCascadeSplitGUI.s_DragCache.m_ActivePartition] + num7 > 0f;
bool flag2 = array[ShadowCascadeSplitGUI.s_DragCache.m_ActivePartition + 1] - num7 > 0f;
if (flag && flag2)
{
ShadowCascadeSplitGUI.s_DragCache.m_NormalizedPartitionSize += num7;
normalizedCascadePartitions[ShadowCascadeSplitGUI.s_DragCache.m_ActivePartition] = ShadowCascadeSplitGUI.s_DragCache.m_NormalizedPartitionSize;
if (ShadowCascadeSplitGUI.s_DragCache.m_ActivePartition < normalizedCascadePartitions.Length - 1)
{
normalizedCascadePartitions[ShadowCascadeSplitGUI.s_DragCache.m_ActivePartition + 1] -= num7;
}
GUI.changed = true;
}
ShadowCascadeSplitGUI.s_DragCache.m_LastCachedMousePosition = current.mousePosition;
current.Use();
}
}
}
else
{
if (GUIUtility.hotControl == controlID)
{
GUIUtility.hotControl = 0;
current.Use();
}
ShadowCascadeSplitGUI.s_DragCache = null;
if (ShadowCascadeSplitGUI.s_RestoreSceneView != null)
{
ShadowCascadeSplitGUI.s_RestoreSceneView.cameraMode = ShadowCascadeSplitGUI.s_OldSceneDrawMode;
ShadowCascadeSplitGUI.s_RestoreSceneView.m_SceneLighting = ShadowCascadeSplitGUI.s_OldSceneLightingMode;
ShadowCascadeSplitGUI.s_RestoreSceneView = null;
}
}
}
else if (num4 >= 0)
{
ShadowCascadeSplitGUI.s_DragCache = new ShadowCascadeSplitGUI.DragCache(num4, normalizedCascadePartitions[num4], current.mousePosition);
if (GUIUtility.hotControl == 0)
{
GUIUtility.hotControl = controlID;
}
current.Use();
if (ShadowCascadeSplitGUI.s_RestoreSceneView == null)
{
ShadowCascadeSplitGUI.s_RestoreSceneView = SceneView.lastActiveSceneView;
if (ShadowCascadeSplitGUI.s_RestoreSceneView != null)
{
ShadowCascadeSplitGUI.s_OldSceneDrawMode = ShadowCascadeSplitGUI.s_RestoreSceneView.cameraMode;
ShadowCascadeSplitGUI.s_OldSceneLightingMode = ShadowCascadeSplitGUI.s_RestoreSceneView.m_SceneLighting;
ShadowCascadeSplitGUI.s_RestoreSceneView.cameraMode = SceneView.GetBuiltinCameraMode(DrawCameraMode.ShadowCascades);
}
}
}
}