A game about forced loneliness, made by TACStudios
tacstudios.tngl.sh
1using System;
2using UnityEngine;
3
4namespace UnityEditor.U2D.Animation
5{
6 internal class Brush
7 {
8 private static readonly float kWheelSizeSpeed = 1f;
9 private static readonly int kBrushHashCode = "Brush".GetHashCode();
10 private IGUIWrapper m_GUIWrapper;
11 private float m_DeltaAcc = 0f;
12 private int m_ControlID = -1;
13 private SliderData m_SliderData = SliderData.zero;
14
15 public event Action<Brush> onMove = (b) => {};
16 public event Action<Brush> onSize = (b) => {};
17 public event Action<Brush> onRepaint = (b) => {};
18 public event Action<Brush> onStrokeBegin = (b) => {};
19 public event Action<Brush> onStrokeDelta = (b) => {};
20 public event Action<Brush> onStrokeStep = (b) => {};
21 public event Action<Brush> onStrokeEnd = (b) => {};
22
23 public bool isHot
24 {
25 get { return m_GUIWrapper.IsControlHot(m_ControlID); }
26 }
27 public bool isActivable
28 {
29 get { return m_GUIWrapper.IsControlHot(0) && m_GUIWrapper.IsControlNearest(m_ControlID); }
30 }
31
32 public int controlID
33 {
34 get { return m_ControlID; }
35 }
36
37 public float hardness { get; set; }
38 public float step { get; set; }
39 public float size { get; set; }
40 public Vector3 position
41 {
42 get { return m_SliderData.position; }
43 }
44
45 public Brush(IGUIWrapper guiWrapper)
46 {
47 m_GUIWrapper = guiWrapper;
48 size = 25f;
49 step = 20f;
50 }
51
52 public void OnGUI()
53 {
54 m_ControlID = m_GUIWrapper.GetControlID(kBrushHashCode, FocusType.Passive);
55
56 var eventType = m_GUIWrapper.eventType;
57
58 if (!m_GUIWrapper.isAltDown)
59 m_GUIWrapper.LayoutControl(controlID, 0f);
60
61 if (isActivable)
62 {
63 m_SliderData.position = m_GUIWrapper.GUIToWorld(m_GUIWrapper.mousePosition);
64
65 if (m_GUIWrapper.IsMouseDown(0))
66 {
67 m_DeltaAcc = 0f;
68 onStrokeBegin(this);
69 onStrokeStep(this);
70 m_GUIWrapper.SetGuiChanged(true);
71 }
72
73 if (eventType == EventType.MouseMove)
74 {
75 onMove(this);
76 m_GUIWrapper.UseCurrentEvent();
77 }
78
79 if (m_GUIWrapper.isShiftDown && eventType == EventType.ScrollWheel)
80 {
81 var sizeDelta = HandleUtility.niceMouseDeltaZoom * kWheelSizeSpeed;
82 size = Mathf.Max(1f, size + sizeDelta);
83 onSize(this);
84 m_GUIWrapper.UseCurrentEvent();
85 }
86 }
87
88 if (isHot && m_GUIWrapper.IsMouseUp(0))
89 onStrokeEnd(this);
90
91 if (m_GUIWrapper.IsRepainting() && (isHot || isActivable))
92 onRepaint(this);
93
94 Vector3 position;
95 if (m_GUIWrapper.DoSlider(m_ControlID, m_SliderData, out position))
96 {
97 step = Mathf.Max(step, 1f);
98
99 var delta = position - m_SliderData.position;
100 var direction = delta.normalized;
101 var magnitude = delta.magnitude;
102
103 m_SliderData.position -= direction * m_DeltaAcc;
104
105 m_DeltaAcc += magnitude;
106
107 if (m_DeltaAcc >= step)
108 {
109 var stepVector = direction * step;
110
111 while (m_DeltaAcc >= step)
112 {
113 m_SliderData.position += stepVector;
114
115 onMove(this);
116 onStrokeStep(this);
117
118 m_DeltaAcc -= step;
119 }
120 }
121
122 m_SliderData.position = position;
123 onStrokeDelta(this);
124 }
125 }
126 }
127}