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This commit is contained in:
Bruno Rybársky
2021-06-13 10:28:03 +02:00
parent eb70603c85
commit df2d24cbd3
7487 changed files with 943244 additions and 0 deletions
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229
Library/PackageCache/com.unity.render-pipelines.universal@11.0.0/Editor/Shadow/ShadowCascadeSplitGUI.cs Normal file
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using System;
using System.Linq;
using UnityEngine;
namespace UnityEditor.Rendering.Universal
{
static partial class ShadowCascadeSplitGUI
{
private const int kSliderbarTopMargin = 2;
private const int kSliderbarHeight = 29;
private const int kSliderbarBottomMargin = 2;
private const int kPartitionHandleWidth = 2;
private const int kPartitionHandleExtraHitAreaWidth = 2;
private static readonly Color[] kCascadeColors =
{
new Color(0.5f, 0.5f, 0.6f, 1.0f),
new Color(0.5f, 0.6f, 0.5f, 1.0f),
new Color(0.6f, 0.6f, 0.5f, 1.0f),
new Color(0.6f, 0.5f, 0.5f, 1.0f),
};
// using a LODGroup skin
private static readonly GUIStyle s_CascadeSliderBG = "LODSliderRange";
private static readonly GUIStyle s_TextCenteredStyle = new GUIStyle(EditorStyles.whiteMiniLabel)
{
alignment = TextAnchor.MiddleCenter
};
// Internal struct to bundle drag information
private class DragCache
{
public int m_ActivePartition; // the cascade partition that we are currently dragging/resizing
public float m_NormalizedPartitionSize; // the normalized size of the partition (0.0f < size < 1.0f)
public Vector2 m_LastCachedMousePosition; // mouse position the last time we registered a drag or mouse down.
public DragCache(int activePartition, float normalizedPartitionSize, Vector2 currentMousePos)
{
m_ActivePartition = activePartition;
m_NormalizedPartitionSize = normalizedPartitionSize;
m_LastCachedMousePosition = currentMousePos;
}
};
private static DragCache s_DragCache;
private static readonly int s_CascadeSliderId = "s_CascadeSliderId".GetHashCode();
private static SceneView s_RestoreSceneView;
private static SceneView.CameraMode s_OldSceneDrawMode;
private static bool s_OldSceneLightingMode;
/**
* 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, float distance, EditorUtils.Unit unit)
{
EditorGUI.indentLevel--;
EditorGUILayout.BeginHorizontal();
GUILayout.Space(EditorGUI.indentLevel * 15f);
// 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);
EditorGUILayout.EndHorizontal();
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];
System.Array.Copy(normalizedCascadePartitions, adjustedCascadePartitions, normalizedCascadePartitions.Length);
adjustedCascadePartitions[adjustedCascadePartitions.Length - 1] = 1.0f - normalizedCascadePartitions.Sum();
string cascadeText = "";
// 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;
if (unit == EditorUtils.Unit.Percent)
{
cascadeText = $"{i+1}\n{currentPartition * 100.0f:F1}%";
}
else
{
var m = currentPartition * distance;
cascadeText = $"{i+1}\n{m:F1}m";
}
GUI.Label(textRect, 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;
#if UNITY_2019_1_OR_NEWER
s_OldSceneLightingMode = s_RestoreSceneView.sceneLighting;
#else
s_OldSceneLightingMode = s_RestoreSceneView.m_SceneLighting;
#endif
}
}
}
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;
#if UNITY_2019_1_OR_NEWER
s_RestoreSceneView.sceneLighting = s_OldSceneLightingMode;
#else
s_RestoreSceneView.m_SceneLighting = s_OldSceneLightingMode;
#endif
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;
}
}
}
}