protected override void OnPopulateMesh(VertexHelper vh)
{
Vector2 pivot = rectTransform.pivot;
Rect inputRect = rectTransform.rect;
float unitsPerPixel = 1f / pixelsPerUnit;
//Vector3 start = new Vector3((0f - pivot.x) * inputRect.width, (0f - pivot.y) * inputRect.height, 0f);
//Vector3 start = new Vector3(0f, 0f, 0f);
//Vector3 end = new Vector3(10f * unitsPerPixel, 10f * unitsPerPixel, 0f);
vh.Clear();
int pos = 0;
Color textColor = color;
for (int i = 0; i < m_Text.Length; ++i)
{
char c = m_Text[i];
SDFFont.Character ch = m_Font.GetCharacter(c);
Vector3 lowerLeft = new Vector3(pos + ch.xoffset, m_Font.baseLine - ch.yoffset - ch.height, 0f);
Vector3 topRight = new Vector3(pos + ch.xoffset + ch.width, m_Font.baseLine - ch.yoffset, 0f);
Debug.LogFormat("char({0}) x:{1} y:{2} xo:{3} yo:{4} width:{5} height:{6} advance:{7}", c, lowerLeft.x, lowerLeft.y, ch.xoffset, ch.yoffset, ch.width, ch.height, ch.advance);
int x = ch.x;
int y = m_Font.texture.height - ch.y;
float u0 = (float)x / (float)m_Font.texture.width;
float u1 = (float)(x + ch.width) / (float)m_Font.texture.width;
float v0 = (float)(y - ch.height) / (float)m_Font.texture.height;
float v1 = (float)y / (float)m_Font.texture.height;
m_TempVerts[0].position = new Vector3(lowerLeft.x, lowerLeft.y) * unitsPerPixel;
m_TempVerts[0].color = Color.red;
m_TempVerts[0].uv0 = new Vector2(u0, v0);
m_TempVerts[1].position = new Vector3(topRight.x, lowerLeft.y) * unitsPerPixel;
m_TempVerts[1].color = textColor;
m_TempVerts[1].uv0 = new Vector2(u1, v0);
m_TempVerts[2].position = new Vector3(topRight.x, topRight.y) * unitsPerPixel;
m_TempVerts[2].color = textColor;
m_TempVerts[2].uv0 = new Vector2(u1, v1);
m_TempVerts[3].position = new Vector3(lowerLeft.x, topRight.y) * unitsPerPixel;
m_TempVerts[3].color = textColor;
m_TempVerts[3].uv0 = new Vector2(u0, v1);
vh.AddUIVertexQuad(m_TempVerts);
pos += ch.advance;
}
}
