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UILineRenderer.cs (fixed first and last point bug, and fixed useless allocations) 

--HG--
branch : Sfyne/uilinerenderercs-edited-online-with-bitb-1463305807389
pull/413/head
Sfyne 2016-05-15 09:50:49 +00:00
parent 3b37f7805b
commit f97dd0ae79
1 changed files with 25 additions and 36 deletions
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61
Scripts/Primitives/UILineRenderer.cs
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@ -1,4 +1,4 @@
/// Credit jack.sydorenko
/// Credit jack.sydorenko
/// Sourced from - http://forum.unity3d.com/threads/new-ui-and-line-drawing.253772/
using System.Collections.Generic;
@ -70,7 +70,6 @@ namespace UnityEngine.UI.Extensions
// requires sets of quads
if (Points == null || Points.Length < 2)
Points = new[] { new Vector2(0, 0), new Vector2(1, 1) };
var capSize = 24;
var sizeX = rectTransform.rect.width;
var sizeY = rectTransform.rect.height;
var offsetX = -rectTransform.pivot.x * rectTransform.rect.width;
@ -82,23 +81,6 @@ namespace UnityEngine.UI.Extensions
sizeX = 1;
sizeY = 1;
}
// build a new set of points taking into account the cap sizes.
// would be cool to support corners too, but that might be a bit tough :)
var pointList = new List<Vector2>();
pointList.Add(Points[0]);
var capPoint = Points[0] + (Points[1] - Points[0]).normalized * capSize;
pointList.Add(capPoint);
// should bail before the last point to add another cap point
for (int i = 1; i < Points.Length - 1; i++)
{
pointList.Add(Points[i]);
}
capPoint = Points[Points.Length - 1] - (Points[Points.Length - 1] - Points[Points.Length - 2]).normalized * capSize;
pointList.Add(capPoint);
pointList.Add(Points[Points.Length - 1]);
var TempPoints = pointList.ToArray();
if (UseMargins)
{
sizeX -= Margin.x;
@ -112,10 +94,10 @@ namespace UnityEngine.UI.Extensions
Vector2 prevV1 = Vector2.zero;
Vector2 prevV2 = Vector2.zero;
for (int i = 1; i < TempPoints.Length; i++)
for (int i = 1; i < Points.Length; i++)
{
var prev = TempPoints[i - 1];
var cur = TempPoints[i];
var prev = Points[i - 1];
var cur = Points[i];
prev = new Vector2(prev.x * sizeX + offsetX, prev.y * sizeY + offsetY);
cur = new Vector2(cur.x * sizeX + offsetX, cur.y * sizeY + offsetY);
@ -131,32 +113,39 @@ namespace UnityEngine.UI.Extensions
v3 = RotatePointAroundPivot(v3, cur, new Vector3(0, 0, angle));
v4 = RotatePointAroundPivot(v4, cur, new Vector3(0, 0, angle));
Vector2 uvTopLeft = Vector2.zero;
Vector2 uvBottomLeft = new Vector2(0, 1);
Vector2 uvTopCenter = new Vector2(0.5f, 0);
Vector2 uvBottomCenter = new Vector2(0.5f, 1);
Vector2 uvTopRight = new Vector2(1, 0);
Vector2 uvBottomRight = new Vector2(1, 1);
Vector2[] uvs = new[] { uvTopCenter, uvBottomCenter, uvBottomCenter, uvTopCenter };
Vector2[] myUvs = uvs3;
if (i > 1)
vh.AddUIVertexQuad(SetVbo(new[] { prevV1, prevV2, v1, v2 }, uvs));
vh.AddUIVertexQuad(SetVbo(new[] { prevV1, prevV2, v1, v2 }, myUvs));
if (i == 1)
uvs = new[] { uvTopLeft, uvBottomLeft, uvBottomCenter, uvTopCenter };
else if (i == TempPoints.Length - 1)
uvs = new[] { uvTopCenter, uvBottomCenter, uvBottomRight, uvTopRight };
myUvs = uvs;
else if (i == Points.Length - 1)
myUvs = uvs2;
vh.AddUIVertexQuad(SetVbo(new[] { v1, v2, v3, v4 }, uvs));
vh.AddUIVertexQuad(SetVbo(new[] { v1, v2, v3, v4 }, myUvs));
prevV1 = v3;
prevV2 = v4;
}
}
static Vector2 uvTopLeft = Vector2.zero;
static Vector2 uvBottomLeft = new Vector2(0, 1);
static Vector2 uvTopCenter = new Vector2(0.5f, 0);
static Vector2 uvBottomCenter = new Vector2(0.5f, 1);
static Vector2 uvTopRight = new Vector2(1, 0);
static Vector2 uvBottomRight = new Vector2(1, 1);
static Vector2[] uvs = new[] { uvTopLeft, uvBottomLeft, uvBottomCenter, uvTopCenter };
static Vector2[] uvs2 = new[] { uvTopCenter, uvBottomCenter, uvBottomRight, uvTopRight };
static Vector2[] uvs3 = new[] { uvTopCenter, uvBottomCenter, uvBottomCenter, uvTopCenter };
protected UIVertex[] SetVbo(Vector2[] vertices, Vector2[] uvs)
{