Trying to make text Warp

Assets/Scripts/DamianExperiments/WarpTextExample.cs

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+using UnityEngine;
+using System.Collections;
+using TMPro;
+using Pixelplacement;
+
+namespace TMPro.Examples
+{
+    [RequireComponent(typeof(TMP_Text))]
+    public class WarpTextExample : MonoBehaviour
+    {
+        private TMP_Text m_TextComponent;
+
+        [Header("Spline Reference")]
+        public Spline spline; // Assign this in the inspector
+
+        [Header("Warp Settings")]
+        public float AngleMultiplier = 1.0f;
+        public float NormalOffset = 20.0f; // Distance above the spline
+
+        void Awake()
+        {
+            m_TextComponent = GetComponent<TMP_Text>();
+        }
+
+        void Start()
+        {
+            if (spline == null)
+            {
+                Debug.LogError("Spline reference not set on WarpTextExample!");
+                enabled = false;
+                return;
+            }
+            StartCoroutine(WarpText());
+        }
+
+        IEnumerator WarpText()
+        {
+            Vector3[] vertices;
+            Matrix4x4 matrix;
+
+            m_TextComponent.havePropertiesChanged = true; // Force update
+
+            while (true)
+            {
+                m_TextComponent.ForceMeshUpdate();
+
+                TMP_TextInfo textInfo = m_TextComponent.textInfo;
+                int characterCount = textInfo.characterCount;
+
+                if (characterCount == 0)
+                {
+                    yield return null;
+                    continue;
+                }
+
+                float boundsMinX = m_TextComponent.bounds.min.x;
+                float boundsMaxX = m_TextComponent.bounds.max.x;
+
+                for (int i = 0; i < characterCount; i++)
+                {
+                    if (!textInfo.characterInfo[i].isVisible)
+                        continue;
+
+                    int vertexIndex = textInfo.characterInfo[i].vertexIndex;
+                    int materialIndex = textInfo.characterInfo[i].materialReferenceIndex;
+
+                    vertices = textInfo.meshInfo[materialIndex].vertices;
+
+                    // Compute the baseline mid point for each character
+                    Vector3 offsetToMidBaseline = new Vector2(
+                        (vertices[vertexIndex + 0].x + vertices[vertexIndex + 2].x) / 2,
+                        textInfo.characterInfo[i].baseLine);
+
+                    // Remove the offset so we can warp around the origin
+                    vertices[vertexIndex + 0] += -offsetToMidBaseline;
+                    vertices[vertexIndex + 1] += -offsetToMidBaseline;
+                    vertices[vertexIndex + 2] += -offsetToMidBaseline;
+                    vertices[vertexIndex + 3] += -offsetToMidBaseline;
+
+                    // Normalized position along the text bounds
+                    float t = (offsetToMidBaseline.x - boundsMinX) / (boundsMaxX - boundsMinX);
+                    t = Mathf.Clamp01(t);
+
+                    Vector3 localSplinePos = spline.GetPosition(t);
+                    Vector3 localSplineTangent = spline.GetDirection(t, true).normalized;
+
+                    // Calculate 2D normal (perpendicular to tangent)
+                    Vector3 normal2D = new Vector3(-localSplineTangent.y, localSplineTangent.x, 0).normalized;
+                    Vector3 offsetPos = localSplinePos + normal2D * NormalOffset;
+
+                    float angle = Mathf.Atan2(localSplineTangent.y, localSplineTangent.x) * Mathf.Rad2Deg * AngleMultiplier;
+
+                    matrix = Matrix4x4.TRS(offsetPos, Quaternion.Euler(0, 0, angle), Vector3.one);
+
+                    vertices[vertexIndex + 0] = matrix.MultiplyPoint3x4(vertices[vertexIndex + 0]);
+                    vertices[vertexIndex + 1] = matrix.MultiplyPoint3x4(vertices[vertexIndex + 1]);
+                    vertices[vertexIndex + 2] = matrix.MultiplyPoint3x4(vertices[vertexIndex + 2]);
+                    vertices[vertexIndex + 3] = matrix.MultiplyPoint3x4(vertices[vertexIndex + 3]);
+
+                    vertices[vertexIndex + 0] += offsetToMidBaseline;
+                    vertices[vertexIndex + 1] += offsetToMidBaseline;
+                    vertices[vertexIndex + 2] += offsetToMidBaseline;
+                    vertices[vertexIndex + 3] += offsetToMidBaseline;
+                }
+
+                m_TextComponent.UpdateVertexData();
+
+                yield return new WaitForSeconds(0.025f);
+            }
+        }
+    }
+}

Assets/Scripts/DamianExperiments/WarpTextExample.cs.meta

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+fileFormatVersion: 2
+guid: 18d8b53f75e30224ea663034b2650d37