1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
| using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class UIMirror : BaseMeshEffect
{
[SerializeField]
private float height = 50f;
[SerializeField]
private float spacing = 50f;
[SerializeField]
private Color startColor = new Color(1f, 1f, 1f, 0.75f);
[SerializeField]
private Color endColor = new Color(1f, 1f, 1f, 0f);
private Rect targetRect;
public Graphic targetGraphic { get { return base.graphic; } }
public float Height
{
get { return height; }
set
{
if (Mathf.Approximately(height, value))
{
height = value;
SetDirty();
}
}
}
public float Spacing
{
get { return spacing; }
set
{
if (Mathf.Approximately(spacing, value))
{
spacing = value;
SetDirty();
}
}
}
public Color StartColor
{
get { return startColor; }
set
{
if(value != startColor)
{
startColor = value;
SetDirty();
}
}
}
public Color EndColor
{
get { return endColor; }
set
{
if(value != endColor)
{
endColor = value;
SetDirty();
}
}
}
private void SetDirty()
{
if (graphic)
{
graphic.SetVerticesDirty();
}
}
public override void ModifyMesh(VertexHelper vh)
{
if (!isActiveAndEnabled || vh.currentVertCount == 0 || (vh.currentVertCount % 4 != 0 && vh.currentVertCount % 6 != 0)) return;
targetRect = graphic.rectTransform.rect;
UIVertex[] quad = UIVertexUtil.QuadVerts;
List<UIVertex> inputVerts = UIVertexUtil.InputVerts;
List<UIVertex> outputVerts = UIVertexUtil.OutputVerts;
inputVerts.Clear();
outputVerts.Clear();
vh.GetUIVertexStream(inputVerts);
for(int i = 0; i < inputVerts.Count; i += 6)
{
quad[0] = inputVerts[i + 0];
quad[1] = inputVerts[i + 1];
quad[2] = inputVerts[i + 2];
quad[3] = inputVerts[i + 4];
UIVertexUtil.AddQuadToStream(quad, outputVerts);
AddMirrorReflectionQuad(quad, outputVerts);
}
vh.Clear();
vh.AddUIVertexTriangleStream(outputVerts);
}
private void AddMirrorReflectionQuad(UIVertex[] quad, List<UIVertex> outputVerts)
{
UIVertex v0 = quad[0];
UIVertex v1 = quad[1];
UIVertex v2 = quad[2];
UIVertex v3 = quad[3];
if (height < (v0.position.y - targetRect.yMin) && height < (v3.position.y - targetRect.yMin)) return;
if (height < (v1.position.y - targetRect.yMin) || height < (v2.position.y - targetRect.yMin))
{
v1 = UIVertexUtil.Lerp(v0, v1, GetLerpFactor(v0.position.y, v1.position.y));
v2 = UIVertexUtil.Lerp(v3, v2, GetLerpFactor(v3.position.y, v2.position.y));
}
MirrorReflectionVertex(ref v0);
MirrorReflectionVertex(ref v1);
MirrorReflectionVertex(ref v2);
MirrorReflectionVertex(ref v3);
quad[0] = v1;
quad[1] = v0;
quad[2] = v3;
quad[3] = v2;
UIVertexUtil.AddQuadToStream(quad, outputVerts);
}
private float GetLerpFactor(float bottom, float top)
{
return (height + targetRect.yMin - bottom) / (top - bottom);
}
private void MirrorReflectionVertex(ref UIVertex vt)
{
Color color = vt.color;
Vector3 position = vt.position;
float factor = Mathf.Clamp01((position.y - targetRect.yMin) / height);
color *= Color.Lerp(startColor, endColor, factor);
position.y = targetRect.yMin - (position.y - targetRect.yMin) - spacing;
vt.color = color;
vt.position = position;
}
}
internal class UIVertexUtil
{
public static readonly UIVertex[] QuadVerts = new UIVertex[4];
public static readonly List<UIVertex> InputVerts = new List<UIVertex>();
public static readonly List<UIVertex> OutputVerts = new List<UIVertex>();
public static void AddQuadToStream(UIVertex[] quad, List<UIVertex> stream)
{
stream.Add(quad[0]);
stream.Add(quad[1]);
stream.Add(quad[2]);
stream.Add(quad[2]);
stream.Add(quad[3]);
stream.Add(quad[0]);
}
public static UIVertex Lerp(UIVertex a, UIVertex b, float t)
{
UIVertex output = default(UIVertex);
output.position = Vector3.Lerp(a.position, b.position, t);
output.normal = Vector3.Lerp(a.normal, b.normal, t);
output.tangent = Vector4.Lerp(a.tangent, b.tangent, t);
output.uv0 = Vector2.Lerp(a.uv0, b.uv0, t);
output.uv1 = Vector2.Lerp(a.uv1, b.uv1, t);
output.color = Color.Lerp(a.color, b.color, t);
return output;
}
}
|
