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80 行
3.8 KiB
80 行
3.8 KiB
using UIWidgets.ui.txt;
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using UnityEngine;
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namespace UIWidgets.ui.painting.txt
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{
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public static class MeshGenrator
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{
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public static Mesh generateMesh(TextBlob textBlob, double x, double y)
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{
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var style = textBlob.style;
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var font = FontManager.instance.getOrCreate(style.safeFontFamily, style.UnityFontSize);
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var length = textBlob.end - textBlob.start;
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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 text = textBlob.text;
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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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style.UnityFontSize, style.UnityFontStyle);
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for (int charIndex = 0; charIndex < length; ++charIndex)
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{
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var ch = text[charIndex + textBlob.start];
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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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{
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vertices[4 * charIndex + 0] = vertices[4 * charIndex + 1] =
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vertices[4 * charIndex + 2] = vertices[4 * charIndex + 3] = offset;
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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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uv[4 * charIndex + 3] = Vector2.zero;
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}
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else
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{
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font.GetCharacterInfo(ch, out charInfo, style.UnityFontSize, style.UnityFontStyle);
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vertices[4 * charIndex + 0] = offset + new Vector3((float)(position.x + charInfo.minX),
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(float)(position.y - charInfo.maxY), 0);
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vertices[4 * charIndex + 1] = offset + new Vector3((float)(position.x + charInfo.maxX),
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(float)(position.y - charInfo.maxY), 0);
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vertices[4 * charIndex + 2] = offset + new Vector3(
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(float)(position.x + charInfo.maxX), (float)(position.y - charInfo.minY), 0);
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vertices[4 * charIndex + 3] = offset + new Vector3(
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(float)(position.x + charInfo.minX), (float)(position.y - charInfo.minY), 0);
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uv[4 * charIndex + 0] = charInfo.uvTopLeft;
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uv[4 * charIndex + 1] = charInfo.uvTopRight;
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uv[4 * charIndex + 2] = charInfo.uvBottomRight;
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uv[4 * charIndex + 3] = charInfo.uvBottomLeft;
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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 + 3] = 4 * charIndex + 0;
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triangles[6 * charIndex + 4] = 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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var colors = new UnityEngine.Color[vertices.Length];
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for (var i = 0; i < colors.Length; i++)
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{
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colors[i] = style.UnityColor;
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}
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mesh.colors = colors;
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return mesh;
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}
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}
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}
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