LearnWithTouch/Assets/TextMesh Pro/Examples & Extras/Scripts/VertexShakeB.cs
2019-07-01 14:33:21 +02:00

185 lines
8.5 KiB
C#

using UnityEngine;
using System.Collections;
namespace TMPro.Examples
{
public class VertexShakeB : MonoBehaviour
{
public float AngleMultiplier = 1.0f;
public float SpeedMultiplier = 1.0f;
public float CurveScale = 1.0f;
private TMP_Text m_TextComponent;
private bool hasTextChanged;
void Awake()
{
m_TextComponent = GetComponent<TMP_Text>();
}
void OnEnable()
{
// Subscribe to event fired when text object has been regenerated.
TMPro_EventManager.TEXT_CHANGED_EVENT.Add(ON_TEXT_CHANGED);
}
void OnDisable()
{
TMPro_EventManager.TEXT_CHANGED_EVENT.Remove(ON_TEXT_CHANGED);
}
void Start()
{
StartCoroutine(AnimateVertexColors());
}
void ON_TEXT_CHANGED(Object obj)
{
if (obj = m_TextComponent)
hasTextChanged = true;
}
/// <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;
Vector3[][] copyOfVertices = new Vector3[0][];
hasTextChanged = true;
while (true)
{
// Allocate new vertices
if (hasTextChanged)
{
if (copyOfVertices.Length < textInfo.meshInfo.Length)
copyOfVertices = new Vector3[textInfo.meshInfo.Length][];
for (int i = 0; i < textInfo.meshInfo.Length; i++)
{
int length = textInfo.meshInfo[i].vertices.Length;
copyOfVertices[i] = new Vector3[length];
}
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;
}
int lineCount = textInfo.lineCount;
// Iterate through each line of the text.
for (int i = 0; i < lineCount; i++)
{
int first = textInfo.lineInfo[i].firstCharacterIndex;
int last = textInfo.lineInfo[i].lastCharacterIndex;
// Determine the center of each line
Vector3 centerOfLine = (textInfo.characterInfo[first].bottomLeft + textInfo.characterInfo[last].topRight) / 2;
Quaternion rotation = Quaternion.Euler(0, 0, Random.Range(-0.25f, 0.25f));
// Iterate through each character of the line.
for (int j = first; j <= last; j++)
{
// Skip characters that are not visible and thus have no geometry to manipulate.
if (!textInfo.characterInfo[j].isVisible)
continue;
// Get the index of the material used by the current character.
int materialIndex = textInfo.characterInfo[j].materialReferenceIndex;
// Get the index of the first vertex used by this text element.
int vertexIndex = textInfo.characterInfo[j].vertexIndex;
// Get the vertices of the mesh used by this text element (character or sprite).
Vector3[] sourceVertices = textInfo.meshInfo[materialIndex].vertices;
// Determine the center point of each character at the baseline.
Vector3 charCenter = (sourceVertices[vertexIndex + 0] + sourceVertices[vertexIndex + 2]) / 2;
// Need to translate all 4 vertices of each quad to aligned with center of character.
// This is needed so the matrix TRS is applied at the origin for each character.
copyOfVertices[materialIndex][vertexIndex + 0] = sourceVertices[vertexIndex + 0] - charCenter;
copyOfVertices[materialIndex][vertexIndex + 1] = sourceVertices[vertexIndex + 1] - charCenter;
copyOfVertices[materialIndex][vertexIndex + 2] = sourceVertices[vertexIndex + 2] - charCenter;
copyOfVertices[materialIndex][vertexIndex + 3] = sourceVertices[vertexIndex + 3] - charCenter;
// Determine the random scale change for each character.
float randomScale = Random.Range(0.95f, 1.05f);
// Setup the matrix for the scale change.
matrix = Matrix4x4.TRS(Vector3.one, Quaternion.identity, Vector3.one * randomScale);
// Apply the scale change relative to the center of each character.
copyOfVertices[materialIndex][vertexIndex + 0] = matrix.MultiplyPoint3x4(copyOfVertices[materialIndex][vertexIndex + 0]);
copyOfVertices[materialIndex][vertexIndex + 1] = matrix.MultiplyPoint3x4(copyOfVertices[materialIndex][vertexIndex + 1]);
copyOfVertices[materialIndex][vertexIndex + 2] = matrix.MultiplyPoint3x4(copyOfVertices[materialIndex][vertexIndex + 2]);
copyOfVertices[materialIndex][vertexIndex + 3] = matrix.MultiplyPoint3x4(copyOfVertices[materialIndex][vertexIndex + 3]);
// Revert the translation change.
copyOfVertices[materialIndex][vertexIndex + 0] += charCenter;
copyOfVertices[materialIndex][vertexIndex + 1] += charCenter;
copyOfVertices[materialIndex][vertexIndex + 2] += charCenter;
copyOfVertices[materialIndex][vertexIndex + 3] += charCenter;
// Need to translate all 4 vertices of each quad to aligned with the center of the line.
// This is needed so the matrix TRS is applied from the center of the line.
copyOfVertices[materialIndex][vertexIndex + 0] -= centerOfLine;
copyOfVertices[materialIndex][vertexIndex + 1] -= centerOfLine;
copyOfVertices[materialIndex][vertexIndex + 2] -= centerOfLine;
copyOfVertices[materialIndex][vertexIndex + 3] -= centerOfLine;
// Setup the matrix rotation.
matrix = Matrix4x4.TRS(Vector3.one, rotation, Vector3.one);
// Apply the matrix TRS to the individual characters relative to the center of the current line.
copyOfVertices[materialIndex][vertexIndex + 0] = matrix.MultiplyPoint3x4(copyOfVertices[materialIndex][vertexIndex + 0]);
copyOfVertices[materialIndex][vertexIndex + 1] = matrix.MultiplyPoint3x4(copyOfVertices[materialIndex][vertexIndex + 1]);
copyOfVertices[materialIndex][vertexIndex + 2] = matrix.MultiplyPoint3x4(copyOfVertices[materialIndex][vertexIndex + 2]);
copyOfVertices[materialIndex][vertexIndex + 3] = matrix.MultiplyPoint3x4(copyOfVertices[materialIndex][vertexIndex + 3]);
// Revert the translation change.
copyOfVertices[materialIndex][vertexIndex + 0] += centerOfLine;
copyOfVertices[materialIndex][vertexIndex + 1] += centerOfLine;
copyOfVertices[materialIndex][vertexIndex + 2] += centerOfLine;
copyOfVertices[materialIndex][vertexIndex + 3] += centerOfLine;
}
}
// Push changes into meshes
for (int i = 0; i < textInfo.meshInfo.Length; i++)
{
textInfo.meshInfo[i].mesh.vertices = copyOfVertices[i];
m_TextComponent.UpdateGeometry(textInfo.meshInfo[i].mesh, i);
}
yield return new WaitForSeconds(0.1f);
}
}
}
}