/// <summary>
/// Normalize vertex position by local matrix.
/// </summary>
public static void GetNormalizedFactor(this EffectArea area, int index, Matrix2x3 matrix, Vector2 position, bool isText, out Vector2 nomalizedPos)
{
if (isText && area == EffectArea.Character)
{
nomalizedPos = matrix * splitedCharacterPosition [index % 4];
}
else
{
nomalizedPos = matrix * position;
}
}
#pragma warning restore 0612
#endif
/// <summary>
/// Modifies the mesh.
/// </summary>
public override void ModifyMesh(VertexHelper vh)
{
if (!isActiveAndEnabled)
{
return;
}
bool isText = isTMPro || graphic is Text;
float normalizedIndex = ptex.GetNormalizedIndex(this);
// rect.
Rect rect = m_EffectArea.GetEffectArea(vh, rectTransform.rect);
// rotation.
float rad = m_Rotation * Mathf.Deg2Rad;
Vector2 dir = new Vector2(Mathf.Cos(rad), Mathf.Sin(rad));
dir.x *= rect.height / rect.width;
dir = dir.normalized;
// Calculate vertex position.
UIVertex vertex = default(UIVertex);
Vector2 nomalizedPos;
Matrix2x3 localMatrix = new Matrix2x3(rect, dir.x, dir.y); // Get local matrix.
for (int i = 0; i < vh.currentVertCount; i++)
{
vh.PopulateUIVertex(ref vertex, i);
m_EffectArea.GetNormalizedFactor(i, localMatrix, vertex.position, isText, out nomalizedPos);
vertex.uv0 = new Vector2(
Packer.ToFloat(vertex.uv0.x, vertex.uv0.y),
Packer.ToFloat(nomalizedPos.y, normalizedIndex)
);
vh.SetUIVertex(vertex, i);
}
}
/// <summary>
/// Call used to modify mesh.
/// </summary>
public override void ModifyMesh(VertexHelper vh)
{
if (!IsActive())
{
return;
}
// Gradient space.
Rect rect = default(Rect);
UIVertex vertex = default(UIVertex);
if (m_GradientStyle == GradientStyle.Rect)
{
// RectTransform.
rect = graphic.rectTransform.rect;
}
else if (m_GradientStyle == GradientStyle.Split)
{
// Each characters.
rect.Set(0, 0, 1, 1);
}
else if (m_GradientStyle == GradientStyle.Fit)
{
// Fit to contents.
rect.xMin = rect.yMin = float.MaxValue;
rect.xMax = rect.yMax = float.MinValue;
for (int i = 0; i < vh.currentVertCount; i++)
{
vh.PopulateUIVertex(ref vertex, i);
rect.xMin = Mathf.Min(rect.xMin, vertex.position.x);
rect.yMin = Mathf.Min(rect.yMin, vertex.position.y);
rect.xMax = Mathf.Max(rect.xMax, vertex.position.x);
rect.yMax = Mathf.Max(rect.yMax, vertex.position.y);
}
}
// Gradient rotation.
float rad = rotation * Mathf.Deg2Rad;
Vector2 dir = new Vector2(Mathf.Cos(rad), Mathf.Sin(rad));
if (!m_IgnoreAspectRatio && Direction.Angle <= m_Direction)
{
dir.x *= rect.height / rect.width;
dir = dir.normalized;
}
// Calculate vertex color.
Color color;
Vector2 nomalizedPos;
Matrix2x3 localMatrix = new Matrix2x3(rect, dir.x, dir.y); // Get local matrix.
for (int i = 0; i < vh.currentVertCount; i++)
{
vh.PopulateUIVertex(ref vertex, i);
// Normalize vertex position by local matrix.
if (m_GradientStyle == GradientStyle.Split)
{
// Each characters.
nomalizedPos = localMatrix * s_SplitedCharacterPosition[i % 4] + offset2;
}
else
{
nomalizedPos = localMatrix * vertex.position + offset2;
}
// Interpolate vertex color.
if (direction == Direction.Diagonal)
{
color = Color.LerpUnclamped(
Color.LerpUnclamped(m_Color1, m_Color2, nomalizedPos.x),
Color.LerpUnclamped(m_Color3, m_Color4, nomalizedPos.x),
nomalizedPos.y);
}
else
{
color = Color.LerpUnclamped(m_Color2, m_Color1, nomalizedPos.y);
}
// Correct color.
vertex.color *= (m_ColorSpace == ColorSpace.Gamma) ? color.gamma
: (m_ColorSpace == ColorSpace.Linear) ? color.linear
: color;
vh.SetUIVertex(vertex, i);
}
}