private void _SetSpriteVertex_FillMethod_Horizontal(VertexHelper toFill, SpriteTag spriteTag, Sprite sprite)
{
UIVertex v = UIVertex.simpleVert;
var vertexIndex = spriteTag.GetVertexStartIndex() * 4;
var fetchIndex = vertexIndex + 3;
if (fetchIndex >= toFill.currentIndexCount)
{
return;
}
if (m_SupportVertexCache)
{
UIVertexCache vertexCache = CacheManager.Instance.GetVertexCache(_parseOutputText.GetHashCode());
if (vertexCache != null)
{
List <UIVertex> vertexs = vertexCache.GetParams();
v = vertexs[fetchIndex];
}
}
else
{
toFill.PopulateUIVertex(ref v, fetchIndex);
}
Vector3 textPos = v.position;
var tagSize = spriteTag.GetSize();
float xOffset = spriteTag.GetOffset() * tagSize.x;
var texture = sprite.texture;
var textureWidthInv = 1.0f / texture.width;
var textureHeightInv = 1.0f / texture.height;
var uvRect = sprite.textureRect;
uvRect = new Rect(uvRect.x * textureWidthInv, uvRect.y * textureHeightInv, uvRect.width * textureWidthInv, uvRect.height * textureHeightInv);
//pos = (0,0)
var position = new Vector3(xOffset, 0, 0) + textPos;
var uv0 = new Vector2(uvRect.x, uvRect.y);
_SetSpriteVertex(toFill, vertexIndex, position, uv0);
var fillAmount = spriteTag.GetFillAmount();
//pos = (1,0)
position = new Vector3(xOffset + tagSize.x * fillAmount, 0, 0) + textPos;
uv0 = new Vector2(uvRect.x + uvRect.width * fillAmount, uvRect.y);
_SetSpriteVertex(toFill, ++vertexIndex, position, uv0);
//pos = (1,1)
position = new Vector3(xOffset + tagSize.x * fillAmount, tagSize.y, 0) + textPos;
uv0 = new Vector2(uvRect.x + uvRect.width * fillAmount, uvRect.y + uvRect.height);
_SetSpriteVertex(toFill, ++vertexIndex, position, uv0);
//pos = (0,1)
position = new Vector3(xOffset, tagSize.y, 0) + textPos;
uv0 = new Vector2(uvRect.x, uvRect.y + uvRect.height);
_SetSpriteVertex(toFill, ++vertexIndex, position, uv0);
}
protected override void OnPopulateMesh(VertexHelper toFill)
{
if (null == font)
{
return;
}
//来自官方Text源码
//we don't care if we the font Texture changes while we are doing our Update
//The end result of cachedTextGenerator will be valid for this instance.
//Otherwise we can get issuse like Case 619238.
m_DisableFontTextureRebuiltCallback = true;
Vector2 extents = rectTransform.rect.size;
var setting = GetGenerationSettings(extents);
cachedTextGenerator.Populate(_parseOutputText, setting);
if (m_SupportVertexCache)
{
UIVertexCache vertexCache = CacheManager.Instance.GetVertexCache(_parseOutputText.GetHashCode());
if (vertexCache != null)
{
toFill.Clear();
List <UIVertex> vertexs = vertexCache.GetParams();
for (int i = 0; i < vertexs.Count; ++i)
{
int tempVerrsIndex = i & 3;
_tempVerts[tempVerrsIndex] = vertexs[i];
_tempVerts[tempVerrsIndex].position *= vertexCache.GetUnitsPerPiexl();
_tempVerts[tempVerrsIndex].uv1 = new Vector2(1.0f, 0);
if (tempVerrsIndex == 3)
{
toFill.AddUIVertexQuad(_tempVerts);
}
//mVertextHelperRef = toFill;
//if(mDirty)
{
_HandleSpriteTag(toFill);
_HandleLinkTag(toFill, vertexs, setting);
//mDirty = false;
}
m_DisableFontTextureRebuiltCallback = false;
return;
}
}
//Apply the offset to the vertices
IList <UIVertex> verts = cachedTextGenerator.verts;
float unitsPerPixl = 1 / pixelsPerUnit;
int vertCount = verts.Count;
if (vertCount <= 0)
{
toFill.Clear();
return;
}
Vector2 roundingOffset = new Vector2(verts[0].position.x, verts[0].position.y) * unitsPerPixl;
roundingOffset = PixelAdjustPoint(roundingOffset) - roundingOffset;
toFill.Clear();
if (roundingOffset != Vector2.zero)
{
for (int i = 0; i < vertCount; ++i)
{
int tempVertsIndex = i & 3;
_tempVerts[tempVertsIndex] = verts[i];
_tempVerts[tempVertsIndex].position *= unitsPerPixl;
_tempVerts[tempVertsIndex].position.x += roundingOffset.x;
_tempVerts[tempVertsIndex].position.y += roundingOffset.y;
_tempVerts[tempVertsIndex].uv1 = new Vector2(1.0f, 0);
if (tempVertsIndex == 3)
{
toFill.AddUIVertexQuad(_tempVerts);
}
}
}
else
{
for (int i = 0; i < vertCount; i++)
{
int tempVertsIndex = i & 3;
_tempVerts[tempVertsIndex] = verts[i];
_tempVerts[tempVertsIndex].position *= unitsPerPixl;
_tempVerts[tempVertsIndex].uv1 = new Vector2(1.0f, 0);
if (m_SupportVertexCache)
{
UIVertexCache vertexsCache = CacheManager.Instance.AddVertexCache(_parseOutputText.GetHashCode());
vertexsCache.AddParams(_tempVerts[tempVertsIndex]);
vertexsCache.SetUnitsPerPixel(unitsPerPixl);
}
}
}
//mVertexHelperRef= toFill;
//if(mDirty)
{
_HandleSpriteTag(toFill);
_HandleLinkTag(toFill, verts, setting);
//mDirty = false;
}
m_DisableFontTextureRebuiltCallback = false;
}
}
