void Start()
{
var path = Path.Combine(Application.dataPath, fontDataPath);
if (File.Exists(path))
{
var source = File.ReadAllText(path);
fontData = JsonConvert.DeserializeObject <MSDFFontData>(source);
MeshInfo info = MSDFTextMesh.GetMeshInfo("hello", fontData, true);
Debug.Log(info.uvs.Length);
}
//numTextGroups = GetTextGroupCount();
textSettings = new TextSettings[1];
var text = "";
for (var i = 0; i < textSettings.Length; ++i)
{
text = quotes[Random.Range(0, quotes.Count)];
textSettings[i] = new TextSettings(text, MSDFTextMesh.GetMeshInfo(text, fontData, true));
}
instanceMesh = CreateMesh();
instanceMaterial = new Material(Shader.Find("Unlit/InstanceShader"));
instanceMaterial.SetColor("_Color", Random.ColorHSV());
instanceMaterial.SetTexture("_MainTex", msdfTexture);
argsBuffer = new ComputeBuffer(1, args.Length * sizeof(uint), ComputeBufferType.IndirectArguments);
UpdateBuffers();
}
void UpdateBuffers()
{
// Ensure submesh index is in range
if (instanceMesh != null)
{
subMeshIndex = Mathf.Clamp(subMeshIndex, 0, instanceMesh.subMeshCount - 1);
}
// Transform Matrix
if (transformDataBuffer != null)
{
transformDataBuffer.Release();
}
// Colors
if (colorBuffer != null)
{
colorBuffer.Release();
}
numTextGroups = GetTextGroupCount();
var oldLength = textSettings.Length;
Array.Resize(ref textSettings, numTextGroups);
var text = "";
if (oldLength < textSettings.Length)
{
for (var i = oldLength; i < textSettings.Length; ++i)
{
text = quotes[Random.Range(0, quotes.Count)];
textSettings[i] = new TextSettings(text, MSDFTextMesh.GetMeshInfo(text, fontData, true));
}
}
transformDataBuffer = new ComputeBuffer(instanceCount, 56);
colorBuffer = new ComputeBuffer(instanceCount, 16);
TransformData[] transformData = new TransformData[instanceCount];
Color[] colors = new Color[instanceCount];
Vector3 center = Random.insideUnitSphere * sphereScale;
Vector3 offset = Vector3.zero;
for (var i = 0; i < numTextGroups; ++i)
{
var uvIndex = 0;
var vertexIndex = 0;
center = Random.insideUnitSphere * sphereScale;
offset.Set(textSettings[i].meshInfo.width * 0.5f, 0f, 0f);
for (int j = 0; j < MAX_TEXT_LENGTH; ++j)
{
var index = (i * MAX_TEXT_LENGTH) + j;
var tl = textSettings[i].meshInfo.positions[vertexIndex + 0];
var br = textSettings[i].meshInfo.positions[vertexIndex + 2];
var x = tl.x + (br.x - tl.x) * 0.5f;
var y = tl.y + (br.y - tl.y) * 0.5f;
var w = Mathf.Abs(br.x - tl.x);
var h = Mathf.Abs(br.y - tl.y);
//Debug.Log($"{textSettings[i].text[vertexIndex / 4]} : tl = {tl.x}, {tl.y}, bl = {bl.x}, {bl.y}, br = {br.x}, {br.y}, tr = {tr.x}, {tr.y}, x = {x}, y = {y}");
var max = textSettings[i].meshInfo.uvs[uvIndex + 3];
var min = textSettings[i].meshInfo.uvs[uvIndex + 1];
var uvScale = max - min;
var uvOffset = min;
transformData[index] = new TransformData(
center - offset + new Vector3(x, y, j * 0.0001f),
new Vector3(w * 0.5f, h * 0.5f, 1f),
new Vector3(Random.Range(-Mathf.PI, Mathf.PI), 0f, 0f),
uvOffset,
uvScale,
j < textSettings[i].text.Length ? 1 : 0);
colors[index] = Random.ColorHSV();
uvIndex = Mathf.Min(uvIndex + 4, textSettings[i].meshInfo.uvs.Length - 4);
vertexIndex = Mathf.Min(vertexIndex + 4, textSettings[i].meshInfo.positions.Length - 4);
}
}
transformDataBuffer.SetData(transformData);
colorBuffer.SetData(colors);
instanceMaterial.SetBuffer("transformDataBuffer", transformDataBuffer);
instanceMaterial.SetBuffer("colorBuffer", colorBuffer);
// Indirect args
if (instanceMesh != null)
{
args[0] = (uint)instanceMesh.GetIndexCount(subMeshIndex);
args[1] = (uint)instanceCount;
args[2] = (uint)instanceMesh.GetIndexStart(subMeshIndex);
args[3] = (uint)instanceMesh.GetBaseVertex(subMeshIndex);
}
else
{
args[0] = args[1] = args[2] = args[3] = 0;
}
argsBuffer.SetData(args);
cachedInstanceCount = instanceCount;
cachedSubMeshIndex = subMeshIndex;
}
