namespace UnityEditor
{
using System;
using System.Linq;
using UnityEngine;
internal static class ShadowCascadeSplitGUI
{
private static readonly Color[] kCascadeColors = new Color[] { new Color(0.5f, 0.5f, 0.6f, 1f), new Color(0.5f, 0.6f, 0.5f, 1f), new Color(0.6f, 0.6f, 0.5f, 1f), new Color(0.6f, 0.5f, 0.5f, 1f) };
private const int kPartitionHandleExtraHitAreaWidth = 2;
private const int kPartitionHandleWidth = 2;
private const int kSliderbarBottomMargin = 2;
private const int kSliderbarHeight = 0x18;
private const int kSliderbarTopMargin = 2;
private static readonly GUIStyle s_CascadeSliderBG = "LODSliderRange";
private static readonly int s_CascadeSliderId;
private static DragCache s_DragCache;
private static DrawCameraMode s_OldSceneDrawMode;
private static bool s_OldSceneLightingMode;
private static SceneView s_RestoreSceneView;
private static readonly GUIStyle s_TextCenteredStyle;
static ShadowCascadeSplitGUI()
{
GUIStyle style = new GUIStyle(EditorStyles.whiteMiniLabel) {
alignment = TextAnchor.MiddleCenter
};
s_TextCenteredStyle = style;
s_CascadeSliderId = "s_CascadeSliderId".GetHashCode();
s_OldSceneDrawMode = DrawCameraMode.Textured;
}
public static void HandleCascadeSliderGUI(ref float[] normalizedCascadePartitions)
{
GUILayout.Label("Cascade splits", new GUILayoutOption[0]);
GUILayoutOption[] options = new GUILayoutOption[] { GUILayout.Height(28f), GUILayout.ExpandWidth(true) };
Rect position = GUILayoutUtility.GetRect(GUIContent.none, s_CascadeSliderBG, options);
GUI.Box(position, GUIContent.none);
float x = position.x;
float y = position.y + 2f;
float num3 = position.width - (normalizedCascadePartitions.Length * 2);
Color color = GUI.color;
Color backgroundColor = GUI.backgroundColor;
int index = -1;
float[] destinationArray = new float[normalizedCascadePartitions.Length + 1];
Array.Copy(normalizedCascadePartitions, destinationArray, normalizedCascadePartitions.Length);
destinationArray[destinationArray.Length - 1] = 1f - normalizedCascadePartitions.Sum();
int controlID = GUIUtility.GetControlID(s_CascadeSliderId, FocusType.Passive);
Event current = Event.current;
int activePartition = -1;
for (int i = 0; i < destinationArray.Length; i++)
{
float num8 = destinationArray[i];
index = (index + 1) % kCascadeColors.Length;
GUI.backgroundColor = kCascadeColors[index];
float width = num3 * num8;
Rect rect2 = new Rect(x, y, width, 24f);
GUI.Box(rect2, GUIContent.none, s_CascadeSliderBG);
x += width;
GUI.color = Color.white;
Rect rect3 = rect2;
string t = string.Format("{0}\n{1:F1}%", i, num8 * 100f);
GUI.Label(rect3, GUIContent.Temp(t, t), s_TextCenteredStyle);
if (i == (destinationArray.Length - 1))
{
break;
}
GUI.backgroundColor = Color.black;
Rect rect4 = rect2;
rect4.x = x;
rect4.width = 2f;
GUI.Box(rect4, GUIContent.none, s_CascadeSliderBG);
Rect rect5 = rect4;
rect5.xMin -= 2f;
rect5.xMax += 2f;
if (rect5.Contains(current.mousePosition))
{
activePartition = i;
}
if (s_DragCache == null)
{
EditorGUIUtility.AddCursorRect(rect5, MouseCursor.ResizeHorizontal, controlID);
}
x += 2f;
}
GUI.color = color;
GUI.backgroundColor = backgroundColor;
EventType typeForControl = current.GetTypeForControl(controlID);
if (typeForControl == EventType.MouseDown)
{
if (activePartition >= 0)
{
s_DragCache = new DragCache(activePartition, normalizedCascadePartitions[activePartition], current.mousePosition);
if (GUIUtility.hotControl == 0)
{
GUIUtility.hotControl = controlID;
}
current.Use();
if (s_RestoreSceneView == null)
{
s_RestoreSceneView = SceneView.lastActiveSceneView;
if (s_RestoreSceneView != null)
{
s_OldSceneDrawMode = s_RestoreSceneView.renderMode;
s_OldSceneLightingMode = s_RestoreSceneView.m_SceneLighting;
s_RestoreSceneView.renderMode = DrawCameraMode.ShadowCascades;
}
}
}
}
else if (typeForControl == EventType.MouseUp)
{
if (GUIUtility.hotControl == controlID)
{
GUIUtility.hotControl = 0;
current.Use();
}
s_DragCache = null;
if (s_RestoreSceneView != null)
{
s_RestoreSceneView.renderMode = s_OldSceneDrawMode;
s_RestoreSceneView.m_SceneLighting = s_OldSceneLightingMode;
s_RestoreSceneView = null;
}
}
else if ((typeForControl == EventType.MouseDrag) && (GUIUtility.hotControl == controlID))
{
Vector2 vector = current.mousePosition - s_DragCache.m_LastCachedMousePosition;
float num10 = vector.x / num3;
bool flag = (destinationArray[s_DragCache.m_ActivePartition] + num10) > 0f;
bool flag2 = (destinationArray[s_DragCache.m_ActivePartition + 1] - num10) > 0f;
if (flag && flag2)
{
s_DragCache.m_NormalizedPartitionSize += num10;
normalizedCascadePartitions[s_DragCache.m_ActivePartition] = s_DragCache.m_NormalizedPartitionSize;
if (s_DragCache.m_ActivePartition < (normalizedCascadePartitions.Length - 1))
{
normalizedCascadePartitions[s_DragCache.m_ActivePartition + 1] -= num10;
}
GUI.changed = true;
}
s_DragCache.m_LastCachedMousePosition = current.mousePosition;
current.Use();
}
}
private class DragCache
{
public int m_ActivePartition;
public Vector2 m_LastCachedMousePosition;
public float m_NormalizedPartitionSize;
public DragCache(int activePartition, float normalizedPartitionSize, Vector2 currentMousePos)
{
this.m_ActivePartition = activePartition;
this.m_NormalizedPartitionSize = normalizedPartitionSize;
this.m_LastCachedMousePosition = currentMousePos;
}
}
}
}
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