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AbstractConcept
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using UnityEditor;
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using UnityEngine;
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using UnityEditor.Sprites;
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using System.Collections;
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using System.Collections.Generic;
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namespace UnityEditor.U2D
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{
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public enum AngleRangeAction
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{
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SelectRange,
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ModifyRange,
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CreateRange,
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ModifySelector,
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RemoveRange,
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}
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public interface IAngleRangeView
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{
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int hoveredRangeIndex { get; }
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void RequestFocusIndex(int index);
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float GetAngleFromPosition(Rect rect, float angleOffset);
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void Repaint();
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void SetupLayout(Rect rect, float angleOffset, float radius);
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bool DoAngleRange(int index, Rect rect, float radius, float angleOffset, ref float start, ref float end, bool snap, bool disabled, Color gradientMin, Color gradientMid, Color gradientMax);
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bool DoSelectAngleRange(int currentSelected, out int newSelected);
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bool DoCreateRange(Rect rect, float radius, float angleOffset, float start, float end);
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void DoCreateRangeTooltip();
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bool DoSelector(Rect rect, float angleOffset, float radius, float angle, out float newAngle);
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bool DoRemoveRange();
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bool IsActionActive(AngleRangeAction action);
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bool IsActionTriggering(AngleRangeAction action);
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bool IsActionFinishing(AngleRangeAction action);
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void DrawAngleRangeOutline(Rect rect, float start, float end, float angleOffset, float radius);
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}
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public class AngleRangeView : IAngleRangeView
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{
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const string kDeleteCommandName = "Delete";
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const string kSoftDeleteCommandName = "SoftDelete";
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static readonly int kAngleRangeHashCode = "AngleRange".GetHashCode();
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static readonly int kCreateRangeHashCode = "CreateRange".GetHashCode();
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static readonly int kSelectorHashCode = "Selector".GetHashCode();
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private static Color kHightlightColor = new Color(0.25f, 0.5f, 1.0f);
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private static Color kNoKeboardFocusColor = new Color(0.3f, 0.5f, 0.65f);
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private static class Contents
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{
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public static readonly GUIContent addRangeTooltip = new GUIContent("", "Click to add a new range");
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}
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private int m_FocusedRangeControlID = -1;
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private int m_HoveredRangeIndex = -1;
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private int m_HoveredRangeID = -1;
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private int m_HoveredHandleID = -1;
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private int m_HotHandleID = -1;
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private int m_CreateRangeControlID = -1;
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private int m_SelectorControlID = -1;
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private int m_RequestFocusIndex = -1;
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public int hoveredRangeIndex { get { return m_HoveredRangeIndex; } }
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public void RequestFocusIndex(int index)
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{
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GUIUtility.keyboardControl = 0;
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m_RequestFocusIndex = index;
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}
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public float GetAngleFromPosition(Rect rect, float angleOffset)
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{
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return Mathf.RoundToInt(SpriteShapeHandleUtility.PosToAngle(Event.current.mousePosition, rect.center, -angleOffset));
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}
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public void Repaint()
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{
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HandleUtility.Repaint();
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}
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public void SetupLayout(Rect rect, float angleOffset, float radius)
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{
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m_CreateRangeControlID = GUIUtility.GetControlID(kCreateRangeHashCode, FocusType.Passive);
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m_SelectorControlID = GUIUtility.GetControlID(kSelectorHashCode, FocusType.Passive);
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LayoutCreateRange(rect, angleOffset, radius);
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if (Event.current.type == EventType.Layout)
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{
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m_HoveredRangeIndex = -1;
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m_HoveredRangeID = -1;
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m_HoveredHandleID = -1;
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if (GUIUtility.hotControl == 0)
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{
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m_HotHandleID = -1;
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}
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}
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}
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private void LayoutCreateRange(Rect rect, float angleOffset, float radius)
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{
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if (Event.current.type == EventType.Layout)
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{
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var mousePosition = Event.current.mousePosition;
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var distance = SpriteShapeHandleUtility.DistanceToArcWidth(mousePosition, rect.center, 0f, 360f, radius, AngleRangeGUI.kRangeWidth, angleOffset);
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HandleUtility.AddControl(m_CreateRangeControlID, distance);
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}
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}
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public bool DoAngleRange(int index, Rect rect, float radius, float angleOffset, ref float start, ref float end, bool snap, bool disabled, Color gradientMin, Color gradientMid, Color gradientMax)
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{
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var changed = false;
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var controlID = GUIUtility.GetControlID(kAngleRangeHashCode, FocusType.Passive);
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var leftHandleId = GUIUtility.GetControlID(AngleRangeGUI.kLeftHandleHashCode, FocusType.Passive);
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var rightHandleId = GUIUtility.GetControlID(AngleRangeGUI.kRightHandleHashCode, FocusType.Passive);
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if (Event.current.type == EventType.Layout)
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{
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var distance = SpriteShapeHandleUtility.DistanceToArcWidth(Event.current.mousePosition, rect.center, start, end, radius, AngleRangeGUI.kRangeWidth, angleOffset);
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HandleUtility.AddControl(controlID, distance);
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if (HandleUtility.nearestControl == controlID)
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{
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m_HoveredRangeIndex = index;
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m_HoveredRangeID = controlID;
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}
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}
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if (IsActionTriggering(AngleRangeAction.ModifyRange))
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{
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m_HotHandleID = m_HoveredHandleID;
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GrabKeyboardFocus(controlID);
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}
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if (m_RequestFocusIndex == index)
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{
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GrabKeyboardFocus(controlID);
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if (Event.current.type == EventType.Repaint)
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m_RequestFocusIndex = -1;
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}
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using (new EditorGUI.DisabledScope(disabled))
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{
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var midAngle = (end - start) * 0.5f + start;
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var t = 2f * (midAngle + 180f) / 360f;
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var color = gradientMin;
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if (t < 1f)
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color = Color.Lerp(gradientMin, gradientMid, t);
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else
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color = Color.Lerp(gradientMid, gradientMax, t - 1f);
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if (!disabled)
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{
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color = kNoKeboardFocusColor;
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if (HasKeyboardFocus())
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color = kHightlightColor;
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}
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EditorGUI.BeginChangeCheck();
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AngleRangeGUI.AngleRangeField(rect, leftHandleId, rightHandleId, ref start, ref end, angleOffset, radius, snap, false, false, color);
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changed = EditorGUI.EndChangeCheck();
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}
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//Extra Layout from handles
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if (Event.current.type == EventType.Layout &&
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(HandleUtility.nearestControl == leftHandleId || HandleUtility.nearestControl == rightHandleId))
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{
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m_HoveredRangeIndex = index;
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m_HoveredRangeID = controlID;
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m_HoveredHandleID = HandleUtility.nearestControl;
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}
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return changed;
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}
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public bool DoSelectAngleRange(int currentSelected, out int newSelected)
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{
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newSelected = currentSelected;
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if (IsActionTriggering(AngleRangeAction.SelectRange))
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{
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newSelected = m_HoveredRangeIndex;
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GUI.changed = true;
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Repaint();
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HandleUtility.nearestControl = m_SelectorControlID;
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return true;
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}
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return false;
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}
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public bool DoCreateRange(Rect rect, float radius, float angleOffset, float start, float end)
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{
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if (IsActionTriggering(AngleRangeAction.CreateRange))
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{
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GUI.changed = true;
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HandleUtility.nearestControl = m_SelectorControlID;
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return true;
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}
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if (IsActionActive(AngleRangeAction.CreateRange))
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{
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DrawAngleRangeOutline(rect, start, end, angleOffset, radius);
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if (Event.current.type == EventType.MouseMove)
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Repaint();
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}
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return false;
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}
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public void DoCreateRangeTooltip()
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{
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if (IsActionActive(AngleRangeAction.CreateRange))
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{
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var mousePosition = Event.current.mousePosition;
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EditorGUI.LabelField(new Rect(mousePosition, new Vector2(1f, 20f)), Contents.addRangeTooltip);
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}
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}
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public bool DoSelector(Rect rect, float angleOffset, float radius, float angle, out float newAngle)
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{
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EditorGUI.BeginChangeCheck();
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newAngle = AngleRangeGUI.AngleField(rect, m_SelectorControlID, angle, angleOffset, Vector2.down * 7.5f, angle, 15f, radius - AngleRangeGUI.kRangeWidth, true, true, false, SpriteShapeHandleUtility.PlayHeadCap);
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return EditorGUI.EndChangeCheck();
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}
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public bool DoRemoveRange()
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{
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EventType eventType = Event.current.type;
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if (IsActionTriggering(AngleRangeAction.RemoveRange))
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{
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Event.current.Use();
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GUI.changed = true;
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return true;
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}
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return false;
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}
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public bool IsActionActive(AngleRangeAction action)
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{
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if (GUIUtility.hotControl != 0)
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return false;
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if (action == AngleRangeAction.SelectRange)
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return HandleUtility.nearestControl == m_HoveredRangeID;
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if (action == AngleRangeAction.ModifyRange)
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return HandleUtility.nearestControl == m_HoveredHandleID;
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if (action == AngleRangeAction.CreateRange)
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return HandleUtility.nearestControl == m_CreateRangeControlID;
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if (action == AngleRangeAction.ModifySelector)
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return HandleUtility.nearestControl == m_SelectorControlID;
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if (action == AngleRangeAction.RemoveRange)
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return HasKeyboardFocus();
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return false;
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}
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public bool IsActionHot(AngleRangeAction action)
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{
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if (GUIUtility.hotControl == 0)
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return false;
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if (action == AngleRangeAction.ModifyRange)
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return GUIUtility.hotControl == m_HotHandleID;
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return false;
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}
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public bool IsActionTriggering(AngleRangeAction action)
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{
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if (!IsActionActive(action))
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return false;
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EventType eventType = Event.current.type;
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if (action == AngleRangeAction.RemoveRange)
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{
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if ((eventType == EventType.ValidateCommand || eventType == EventType.ExecuteCommand)
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&& (Event.current.commandName == kSoftDeleteCommandName || Event.current.commandName == kDeleteCommandName))
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{
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if (eventType == EventType.ExecuteCommand)
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return true;
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Event.current.Use();
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}
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return false;
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}
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return eventType == EventType.MouseDown && Event.current.button == 0;
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}
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public bool IsActionFinishing(AngleRangeAction action)
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{
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if (!IsActionHot(action))
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return false;
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return (Event.current.type == EventType.MouseUp && Event.current.button == 0) || Event.current.type == EventType.Ignore;
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}
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public void DrawAngleRangeOutline(Rect rect, float start, float end, float angleOffset, float radius)
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{
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if (Event.current.type == EventType.Repaint)
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SpriteShapeHandleUtility.DrawRangeOutline(start, end, angleOffset, rect.center, radius, AngleRangeGUI.kRangeWidth - 1f);
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}
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private void GrabKeyboardFocus(int controlID)
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{
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m_FocusedRangeControlID = controlID;
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GUIUtility.keyboardControl = controlID;
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}
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private bool HasKeyboardFocus()
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{
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return GUIUtility.keyboardControl == m_FocusedRangeControlID;
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}
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}
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}
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