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using UIWidgets.ui.txt; |
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using UIWidgets.ui.txt; |
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public class MeshKey : IEquatable<MeshKey> |
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{ |
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public readonly string text; |
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public readonly int fontId; |
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public readonly int textureVersion; |
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public readonly int fontSize; |
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public readonly UnityEngine.FontStyle fontStyle; |
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public readonly float pixelPerPoint; |
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public readonly UnityEngine.Color color; |
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public MeshKey(string text, int fontId, int textureVersion, int fontSize, |
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UnityEngine.FontStyle fontStyle, float pixelPerPoint, UnityEngine.Color color) |
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{ |
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this.text = text; |
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this.fontId = fontId; |
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this.textureVersion = textureVersion; |
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this.fontSize = fontSize; |
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this.fontStyle = fontStyle; |
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this.pixelPerPoint = pixelPerPoint; |
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this.color = color; |
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} |
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public bool Equals(MeshKey other) |
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{ |
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if (ReferenceEquals(null, other)) return false; |
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if (ReferenceEquals(this, other)) return true; |
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return string.Equals(text, other.text) && fontId == other.fontId && |
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textureVersion == other.textureVersion && fontSize == other.fontSize && |
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fontStyle == other.fontStyle && pixelPerPoint.Equals(other.pixelPerPoint) && |
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color.Equals(other.color); |
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} |
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public override bool Equals(object obj) |
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{ |
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if (ReferenceEquals(null, obj)) return false; |
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if (ReferenceEquals(this, obj)) return true; |
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if (obj.GetType() != this.GetType()) return false; |
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return Equals((MeshKey) obj); |
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} |
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public override int GetHashCode() |
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{ |
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unchecked |
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{ |
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var hashCode = (text != null ? text.GetHashCode() : 0); |
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hashCode = (hashCode * 397) ^ fontId; |
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hashCode = (hashCode * 397) ^ textureVersion; |
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hashCode = (hashCode * 397) ^ fontSize; |
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hashCode = (hashCode * 397) ^ (int) fontStyle; |
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hashCode = (hashCode * 397) ^ pixelPerPoint.GetHashCode(); |
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hashCode = (hashCode * 397) ^ color.GetHashCode(); |
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return hashCode; |
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} |
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} |
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public static bool operator ==(MeshKey left, MeshKey right) |
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{ |
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return Equals(left, right); |
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} |
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public static bool operator !=(MeshKey left, MeshKey right) |
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{ |
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return !Equals(left, right); |
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} |
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public override string ToString() |
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{ |
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return string.Format( |
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"Text: {0}, FontId: {1}, TextureVersion: {2}, FontSize: {3}, FontStyle: {4}, PixelPerPoint: {5}, Color: {6}", |
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text, fontId, textureVersion, fontSize, fontStyle, pixelPerPoint, color); |
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} |
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} |
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public class MeshInfo |
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{ |
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public readonly Mesh mesh; |
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public readonly MeshKey key; |
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public long _timeToLive; |
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public MeshInfo(MeshKey key, Mesh mesh, int timeToLive = 5) |
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{ |
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this.mesh = mesh; |
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this.key = key; |
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this.touch(timeToLive); |
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} |
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public long timeToLive |
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{ |
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get { return _timeToLive; } |
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} |
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public void touch(long timeTolive = 5) |
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{ |
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this._timeToLive = timeTolive + MeshGenrator.frameCount; |
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} |
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} |
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public static Mesh generateMesh(TextBlob textBlob, double x, double y) |
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private static Dictionary<MeshKey, MeshInfo> _meshes = new Dictionary<MeshKey, MeshInfo>(); |
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private static long _frameCount = 0; |
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public static long frameCount |
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{ |
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get { return _frameCount; } |
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} |
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public static long MeshCount |
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{ |
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get { return _meshes.Count; } |
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} |
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public static void tickNextFrame() |
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{ |
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_frameCount++; |
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var keysToRemove = _meshes.Values.Where(info => info.timeToLive < _frameCount).Select(info => info.key).ToList(); |
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foreach (var key in keysToRemove) |
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{ |
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_meshes.Remove(key); |
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} |
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} |
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public static Mesh generateMesh(TextBlob textBlob) |
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var font = FontManager.instance.getOrCreate(style.fontFamily, style.UnityFontSize); |
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var fontInfo = FontManager.instance.getOrCreate(style.fontFamily); |
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var font = fontInfo.font; |
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var vertices = new Vector3[length * 4]; |
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var triangles = new int[length * 6]; |
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var uv = new Vector2[length * 4]; |
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var fontSizeToLoad = (int)scale * style.UnityFontSize; |
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var offset = new Vector3((float)Utils.PixelCorrectRound(x), (float)Utils.PixelCorrectRound(y), 0); |
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font.RequestCharactersInTexture(textBlob.text.Substring(textBlob.start, textBlob.end - textBlob.start), |
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var fontSizeToLoad = (int) scale * style.UnityFontSize; |
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var subText = textBlob.text.Substring(textBlob.start, textBlob.end - textBlob.start); |
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font.RequestCharactersInTexture(subText, |
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MeshInfo meshInfo; |
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var key = new MeshKey(subText, font.GetInstanceID(), |
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fontInfo.textureVersion, |
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style.UnityFontSize, style.UnityFontStyle, scale, style.UnityColor); |
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Mesh mesh = null; |
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_meshes.TryGetValue(key, out meshInfo); |
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if (meshInfo != null) |
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{ |
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mesh = meshInfo.mesh; |
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meshInfo.touch(); |
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} |
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if (mesh != null) |
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{ |
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return mesh; |
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} |
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var vertices = new Vector3[length * 4]; |
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var triangles = new int[length * 6]; |
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var uv = new Vector2[length * 4]; |
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mesh = new Mesh(); |
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_meshes[key] = new MeshInfo(key, mesh); |
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var position = textBlob.positions[charIndex + textBlob.start]; |
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CharacterInfo charInfo = new CharacterInfo(); |
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if (Paragraph.isWordSpace(ch) || Paragraph.isLineEndSpace(ch) || ch== '\t') |
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// first char as origin for mesh position
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var position = textBlob.positions[charIndex + textBlob.start] - textBlob.positions[textBlob.start]; |
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if (Paragraph.isWordSpace(ch) || Paragraph.isLineEndSpace(ch) || ch == '\t') |
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vertices[4 * charIndex + 2] = vertices[4 * charIndex + 3] = offset; |
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vertices[4 * charIndex + 2] = vertices[4 * charIndex + 3] = Vector3.zero; |
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uv[4 * charIndex + 0] = Vector2.zero; |
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uv[4 * charIndex + 1] = Vector2.zero; |
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uv[4 * charIndex + 2] = Vector2.zero; |
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{ |
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CharacterInfo charInfo; |
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vertices[4 * charIndex + 0] = offset + new Vector3((float)(position.x + minX), |
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(float)(position.y - maxY), 0); |
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vertices[4 * charIndex + 1] = offset + new Vector3((float)(position.x + maxX), |
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(float)(position.y - maxY), 0); |
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vertices[4 * charIndex + 2] = offset + new Vector3( |
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(float)(position.x + maxX), (float)(position.y - minY), 0); |
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vertices[4 * charIndex + 3] = offset + new Vector3( |
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(float)(position.x + minX), (float)(position.y - minY), 0); |
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vertices[4 * charIndex + 0] = new Vector3((float) (position.x + minX), |
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(float) (position.y - maxY), 0); |
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vertices[4 * charIndex + 1] = new Vector3((float) (position.x + maxX), |
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(float) (position.y - maxY), 0); |
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vertices[4 * charIndex + 2] = new Vector3( |
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(float) (position.x + maxX), (float) (position.y - minY), 0); |
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vertices[4 * charIndex + 3] = new Vector3( |
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(float) (position.x + minX), (float) (position.y - minY), 0); |
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} |
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} |
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triangles[6 * charIndex + 0] = 4 * charIndex + 0; |
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triangles[6 * charIndex + 1] = 4 * charIndex + 1; |
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triangles[6 * charIndex + 2] = 4 * charIndex + 2; |
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triangles[6 * charIndex + 5] = 4 * charIndex + 3; |
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} |
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var mesh = new Mesh() |
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{ |
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vertices = vertices, |
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triangles = triangles, |
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uv = uv |
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}; |
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mesh.vertices = vertices; |
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mesh.triangles = triangles; |
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mesh.uv = uv; |
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return mesh; |
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} |
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} |
fzhangtj
6 年前