Tasharen Entertainment Forum

Support => NGUI 3 Support => Topic started by: Seroster on September 28, 2014, 10:56:54 AM

Title: Vertex coloured sprites
Post by: Seroster on September 28, 2014, 10:56:54 AM

I'm using this for something in a hobby game I'm working on.   This allows you to create colour gradient effects on sprites.  In case this of use to anyone:

Of course this would be better if you could set the colours from within the inspector.  I don't need that myself so I haven't done it.  And it really would be better to ensure the list is filled before trying to render. :D

In UIBasicSprite.cs:
- add a new Type, "VertexColoured".
- in the Fill() method, add the following case to the code:

1.                         case Type.VertexColoured:
2.                         VertexColouredFill(verts, uvs, cols);
3.                         break;
4.  

And then you need this code somewhere:

1.  
2.         BetterList<Color> vertexColours;
3.                
4.         public void SetVertexColours(Color c1, Color c2, Color c3, Color c4)
5.         {
6.                 BetterList<Color> colourList = new BetterList<Color>();
7.                 colourList.Add(c1);
8.                 colourList.Add(c2);
9.                 colourList.Add(c3);
10.                 colourList.Add(c4);
11.                 this.vertexColours = colourList;
12.         }
13.  
14.         protected void VertexColouredFill(BetterList<Vector3> verts, BetterList<Vector2> uvs, BetterList<Color32> cols)
15.         {
16.                 Vector2 uv0 = new Vector2(mOuterUV.xMin, mOuterUV.yMin);
17.                 Vector2 uv1 = new Vector2(mOuterUV.xMax, mOuterUV.yMax);
18.                                
19.                 Vector4 v = drawingDimensions;
20.                                
21.                 verts.Add(new Vector3(v.x, v.y));
22.                 verts.Add(new Vector3(v.x, v.w));
23.                 verts.Add(new Vector3(v.z, v.w));
24.                 verts.Add(new Vector3(v.z, v.y));
25.                                
26.                 uvs.Add(uv0);
27.                 uvs.Add(new Vector2(uv0.x, uv1.y));
28.                 uvs.Add(uv1);
29.                 uvs.Add(new Vector2(uv1.x, uv0.y));
30.                        
31.                 foreach (Color vc in this.vertexColours)
32.                 {
33.                         cols.Add(vc);                          
34.                 }              
35.         }
36.