/// <summary>
/// Method to animate vertex colors of a TMP Text object.
/// </summary>
/// <returns></returns>
IEnumerator AnimateVertexColors()
{
// We force an update of the text object since it would only be updated at the end of the frame. Ie. before this code is executed on the first frame.
// Alternatively, we could yield and wait until the end of the frame when the text object will be generated.
m_TextComponent.ForceMeshUpdate();
TMP_TextInfo textInfo = m_TextComponent.textInfo;
Matrix4x4 matrix;
int loopCount = 0;
hasTextChanged = true;
// Create an Array which contains pre-computed Angle Ranges and Speeds for a bunch of characters.
VertexAnim[] vertexAnim = new VertexAnim[1024];
for (int i = 0; i < 1024; i++)
{
vertexAnim[i].angleRange = Random.Range(10f, 25f);
vertexAnim[i].speed = Random.Range(1f, 3f);
}
// Cache the vertex data of the text object as the Jitter FX is applied to the original position of the characters.
TMP_MeshInfo[] cachedMeshInfo = textInfo.CopyMeshInfoVertexData();
while (true)
{
//コルーチンを破棄する
if (breakFlag)
{
m_TextComponent.ForceMeshUpdate();
yield break;
}
// Get new copy of vertex data if the text has changed.
if (hasTextChanged)
{
// Update the copy of the vertex data for the text object.
cachedMeshInfo = textInfo.CopyMeshInfoVertexData();
hasTextChanged = false;
}
int characterCount = textInfo.characterCount;
// If No Characters then just yield and wait for some text to be added
if (characterCount == 0)
{
yield return(new WaitForSeconds(0.25f));
continue;
}
for (int i = 0; i < characterCount; i++)
{
TMP_CharacterInfo charInfo = textInfo.characterInfo[i];
// Skip characters that are not visible and thus have no geometry to manipulate.
if (!charInfo.isVisible)
{
continue;
}
//アニメーションをスキップする
if (i < animStartIndex || animStartIndex + animLength <= i)
{
continue;
}
// Retrieve the pre-computed animation data for the given character.
VertexAnim vertAnim = vertexAnim[i];
// Get the index of the material used by the current character.
int materialIndex = textInfo.characterInfo[i].materialReferenceIndex;
// Get the index of the first vertex used by this text element.
int vertexIndex = textInfo.characterInfo[i].vertexIndex;
// Get the cached vertices of the mesh used by this text element (character or sprite).
Vector3[] sourceVertices = cachedMeshInfo[materialIndex].vertices;
// Determine the center point of each character at the baseline.
//Vector2 charMidBasline = new Vector2((sourceVertices[vertexIndex + 0].x + sourceVertices[vertexIndex + 2].x) / 2, charInfo.baseLine);
// Determine the center point of each character.
Vector2 charMidBasline = (sourceVertices[vertexIndex + 0] + sourceVertices[vertexIndex + 2]) / 2;
// Need to translate all 4 vertices of each quad to aligned with middle of character / baseline.
// This is needed so the matrix TRS is applied at the origin for each character.
Vector3 offset = charMidBasline;
Vector3[] destinationVertices = textInfo.meshInfo[materialIndex].vertices;
destinationVertices[vertexIndex + 0] = sourceVertices[vertexIndex + 0] - offset;
destinationVertices[vertexIndex + 1] = sourceVertices[vertexIndex + 1] - offset;
destinationVertices[vertexIndex + 2] = sourceVertices[vertexIndex + 2] - offset;
destinationVertices[vertexIndex + 3] = sourceVertices[vertexIndex + 3] - offset;
vertAnim.angle = Mathf.SmoothStep(-vertAnim.angleRange, vertAnim.angleRange, Mathf.PingPong(loopCount / 25f * vertAnim.speed, 1f));
Vector3 jitterOffset = new Vector3(Random.Range(-.25f, .25f), Random.Range(-.25f, .25f), 0);
//Vector3 jitterOffset = new Vector3(0, Mathf.Sin(Time.time), 0);
matrix = Matrix4x4.TRS(jitterOffset * CurveScale, Quaternion.Euler(0, 0, Random.Range(-5f, 5f) * AngleMultiplier), Vector3.one);
destinationVertices[vertexIndex + 0] = matrix.MultiplyPoint3x4(destinationVertices[vertexIndex + 0]);
destinationVertices[vertexIndex + 1] = matrix.MultiplyPoint3x4(destinationVertices[vertexIndex + 1]);
destinationVertices[vertexIndex + 2] = matrix.MultiplyPoint3x4(destinationVertices[vertexIndex + 2]);
destinationVertices[vertexIndex + 3] = matrix.MultiplyPoint3x4(destinationVertices[vertexIndex + 3]);
destinationVertices[vertexIndex + 0] += offset;
destinationVertices[vertexIndex + 1] += offset;
destinationVertices[vertexIndex + 2] += offset;
destinationVertices[vertexIndex + 3] += offset;
vertexAnim[i] = vertAnim;
}
// Push changes into meshes
for (int i = 0; i < textInfo.meshInfo.Length; i++)
{
textInfo.meshInfo[i].mesh.vertices = textInfo.meshInfo[i].vertices;
m_TextComponent.UpdateGeometry(textInfo.meshInfo[i].mesh, i);
}
loopCount += 1;
//yield return new WaitForSeconds(0.1f);
yield return(null);
}
}